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The effect of irrigation and nitrogenous and phosphorous biofertilizers on yield and yield component on chickpea (Cicerarietinum L.) ILC482 line

Abstract To evaluate the effects of nitrogenous and phosphorous biofertilizers on yield and yield components of chickpea under different irrigation levels a research was conducted in a split plot experiment with three replicationsbased on completelyrandomized block design at Research Field of Islamic Azad University Tabriz Branch in the spring of 2009. Irrigation levels (normal and deficit irrigation) were considered as a main factor and also fertilizers levels (control, nitragin, biosuper and nitragin + biosuper) sub factors respectively. Control treatment of biofertilizer showed fewer enhancements. Comparison of biofertilzer treatments showed that nitrogen + biosuper biofertilizer increased more number of pods with one seed per plant by 19/28, number of pods with two seed by 15/28, seed weight per plant by 4/47 g/m2, pod weight per plant by 5/93 g/m2and yield by 89/39g/m2. There is no significant difference among nitragen ,biosuper and control treatments.Comparison of the different irrigation levels effect on number of pods with two seed per plant showed that complete irrigation produced more number of pods with two seed per plant by 24/1.and 100 seed weight by 30/76 g nitragen and biosuper produced significant yield relative to other treatments.

Abstract
To evaluate the effects of nitrogenous and phosphorous biofertilizers on yield and yield components of chickpea under different irrigation levels a research was conducted in a split plot experiment with three replicationsbased on completelyrandomized block design at Research Field of Islamic Azad University Tabriz Branch in the spring of 2009. Irrigation levels (normal and deficit irrigation) were considered as a main factor and also fertilizers levels (control, nitragin, biosuper and nitragin + biosuper) sub factors respectively. Control treatment of biofertilizer showed fewer enhancements. Comparison of biofertilzer treatments showed that nitrogen + biosuper biofertilizer increased more number of pods with one seed per plant by 19/28, number of pods with two seed by 15/28, seed weight per plant by 4/47 g/m2, pod weight per plant by 5/93 g/m2and yield by 89/39g/m2. There is no significant difference among nitragen ,biosuper and control treatments.Comparison of the different irrigation levels effect on number of pods with two seed per plant showed that complete irrigation produced more number of pods with two seed per plant by 24/1.and 100 seed weight by 30/76 g nitragen and biosuper produced significant yield relative to other treatments.

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Internati<strong>on</strong>al Journal <str<strong>on</strong>g>of</str<strong>on</strong>g> Agr<strong>on</strong>omy <str<strong>on</strong>g>and</str<strong>on</strong>g> Agricultural Research (IJAAR)<br />

ISSN: 2223-7054 (Print) 2225-3610 (On<strong>line</strong>)<br />

http://www.innspub.net<br />

Vol. 3, No. 7, p. 21-28, 2013<br />

RESEARCH PAPER<br />

OPEN ACCESS<br />

<str<strong>on</strong>g>The</str<strong>on</strong>g> <str<strong>on</strong>g>effect</str<strong>on</strong>g> <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> <str<strong>on</strong>g>and</str<strong>on</strong>g> <str<strong>on</strong>g>nitrogenous</str<strong>on</strong>g> <str<strong>on</strong>g>and</str<strong>on</strong>g> <str<strong>on</strong>g>phosphorous</str<strong>on</strong>g><br />

bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> <strong>yield</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong> comp<strong>on</strong>ent <strong>on</strong> <strong>chickpea</strong><br />

(<strong>Cicerarietinum</strong> L.) <strong>ILC482</strong> <strong>line</strong><br />

Zahra Rabieyan 1* , Farrokh Rahimzadeh Khoei 2 , Vida Ahmadi 3<br />

1,3<br />

Young Researchers <str<strong>on</strong>g>and</str<strong>on</strong>g> Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran<br />

2<br />

Faculty <str<strong>on</strong>g>of</str<strong>on</strong>g> Agriculture, Tabriz Branch, Islamic Azad University, Tabriz, Iran<br />

Article published <strong>on</strong> July 25, 2013<br />

Key words: Bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers, Biosuper, Chickpea,Deficit Irrigati<strong>on</strong>, Nitragen.<br />

Abstract<br />

To evaluate the <str<strong>on</strong>g>effect</str<strong>on</strong>g>s <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>nitrogenous</str<strong>on</strong>g> <str<strong>on</strong>g>and</str<strong>on</strong>g> <str<strong>on</strong>g>phosphorous</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> <strong>yield</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong> comp<strong>on</strong>ents <str<strong>on</strong>g>of</str<strong>on</strong>g> <strong>chickpea</strong><br />

under different <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> levels a research was c<strong>on</strong>ducted in a split plot experiment with three replicati<strong>on</strong>sbased<br />

<strong>on</strong> completelyr<str<strong>on</strong>g>and</str<strong>on</strong>g>omized block design at Research Field <str<strong>on</strong>g>of</str<strong>on</strong>g> Islamic Azad University Tabriz Branch in the spring <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

2009. Irrigati<strong>on</strong> levels (normal <str<strong>on</strong>g>and</str<strong>on</strong>g> deficit <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>) were c<strong>on</strong>sidered as a main factor <str<strong>on</strong>g>and</str<strong>on</strong>g> also fertilizers levels<br />

(c<strong>on</strong>trol, nitragin, biosuper <str<strong>on</strong>g>and</str<strong>on</strong>g> nitragin + biosuper) sub factors respectively. C<strong>on</strong>trol treatment <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer<br />

showed fewer enhancements. Comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilzer treatments showed that nitrogen + biosuper bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer<br />

increased more number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with <strong>on</strong>e seed per plant by 19/28, number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed by 15/28, seed<br />

weight per plant by 4/47 g/m 2 , pod weight per plant by 5/93 g/m 2 <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong> by 89/39g/m 2 . <str<strong>on</strong>g>The</str<strong>on</strong>g>re is no significant<br />

difference am<strong>on</strong>g nitragen ,biosuper <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>trol treatments.Comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> the different <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> levels <str<strong>on</strong>g>effect</str<strong>on</strong>g> <strong>on</strong><br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed per plant showed that complete <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> produced more number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two<br />

seed per plant by 24/1.<str<strong>on</strong>g>and</str<strong>on</strong>g> 100 seed weight by 30/76 g nitragen <str<strong>on</strong>g>and</str<strong>on</strong>g> biosuper produced significant <strong>yield</strong> relative to<br />

other treatments.<br />

* Corresp<strong>on</strong>ding Author: Zahra Rabieyan z.rabieyan@gmail.com<br />

Rabieyan et al. Page 21


Introducti<strong>on</strong><br />

Grain legumes are a major source <str<strong>on</strong>g>of</str<strong>on</strong>g> proteins in<br />

human <str<strong>on</strong>g>and</str<strong>on</strong>g> animal nutriti<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> they play a key role<br />

in crop rotati<strong>on</strong> in most parts <str<strong>on</strong>g>of</str<strong>on</strong>g> the world (Ben<br />

Romdhan et al., 2009). Chickpea is indeterminate,<br />

diploid (2n=16), self-pollinated. Kabuli <strong>chickpea</strong><br />

(<strong>Cicerarietinum</strong> L.) is a quantitative l<strong>on</strong>g day plant<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> is <strong>on</strong>e <str<strong>on</strong>g>of</str<strong>on</strong>g> the most widely cultivated cool seas<strong>on</strong><br />

food legumes. It is best adapted to spring–early<br />

summer seas<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> the mediterean <str<strong>on</strong>g>and</str<strong>on</strong>g> cool winter<br />

temperatures in the semi-arid tropics. <str<strong>on</strong>g>The</str<strong>on</strong>g> world<br />

average seed <strong>yield</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> 796 kg/ha results in a shortfall<br />

between producti<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> dem<str<strong>on</strong>g>and</str<strong>on</strong>g> in most countries.<br />

Micro organisms are an essential <str<strong>on</strong>g>and</str<strong>on</strong>g> large<br />

comp<strong>on</strong>ent <str<strong>on</strong>g>of</str<strong>on</strong>g> the living biomass <str<strong>on</strong>g>of</str<strong>on</strong>g> the soil (Naiman,<br />

et al., 2009). Many different genera <str<strong>on</strong>g>of</str<strong>on</strong>g> plant growth<br />

promoting Rhizobacteria such as Azospirillum,<br />

Azotobacter, Bacillus have been used as bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer<br />

for ec<strong>on</strong>omically important crops (Rokhzadi <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

Toashih, 2011). Generally, legume dominant st<str<strong>on</strong>g>and</str<strong>on</strong>g>s<br />

show better resp<strong>on</strong>se tobi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer applicati<strong>on</strong><br />

because theyobtain their nitrogen <str<strong>on</strong>g>and</str<strong>on</strong>g>phosphorus<br />

requirements via symbiotic pathways (Erkovan et al.<br />

2010). Bacillus megaterium var. phosphaticum,a<br />

phosphorus solubilizing bacteria, release acid into<br />

therhizosphere to enhance nutrient uptake (Vazquez<br />

et al. 2003). This process might reduce pH levels<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g>soils <str<strong>on</strong>g>and</str<strong>on</strong>g> might alter competiti<strong>on</strong> c<strong>on</strong>diti<strong>on</strong>s within<br />

naturalcommunities (Erkovan et al. 2010). <str<strong>on</strong>g>The</str<strong>on</strong>g><br />

bacteria used as phosphorus <str<strong>on</strong>g>and</str<strong>on</strong>g> nitrogenus<br />

bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers could c<strong>on</strong>tribute to increasing the<br />

availability <str<strong>on</strong>g>of</str<strong>on</strong>g> phosphates <str<strong>on</strong>g>and</str<strong>on</strong>g> nitrogen immobilized<br />

in soil <str<strong>on</strong>g>and</str<strong>on</strong>g> could enhance plant growth by increasing<br />

the efficiency <str<strong>on</strong>g>of</str<strong>on</strong>g> other nutrients (Erkovan et al.,<br />

2010). Indeed, studies <strong>on</strong> the applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> nitrogen<br />

fixing<str<strong>on</strong>g>and</str<strong>on</strong>g> phosphorus solubilizing bacteria were<br />

shown to increase<strong>yield</strong>s cicer (Elkoca et al. 2008).<str<strong>on</strong>g>The</str<strong>on</strong>g><br />

recorded increase in wheat grain <strong>yield</strong> by coinoculati<strong>on</strong><br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> the plant with bio-fertilizers could be<br />

due to the increase in the number <str<strong>on</strong>g>of</str<strong>on</strong>g> grains per plant<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> due to increased weight <str<strong>on</strong>g>of</str<strong>on</strong>g> grains per plant<br />

(Askary, et al., 2009). Water deficiency <str<strong>on</strong>g>and</str<strong>on</strong>g> drought<br />

directly affect persistence <str<strong>on</strong>g>and</str<strong>on</strong>g>survival <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer<br />

in the soil, nodule activity <str<strong>on</strong>g>and</str<strong>on</strong>g> functi<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> also<br />

limits nodulati<strong>on</strong> through its <str<strong>on</strong>g>effect</str<strong>on</strong>g>s<strong>on</strong> root-hair<br />

col<strong>on</strong>izati<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> usage fertilizer by plant<br />

(BemRamadhan et al. 2009). Increasing crop<br />

tolerance to water deficit would be the most<br />

ec<strong>on</strong>omical approach to enhance productivity <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

reduce agricultural utilizati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> fresh water<br />

resources (Gao et al., 2008). Leport et al., (2006)<br />

showed that early water stress affects <strong>on</strong> dry matter<br />

producti<strong>on</strong>, biomass <str<strong>on</strong>g>and</str<strong>on</strong>g> seed <strong>yield</strong> in <strong>chickpea</strong>.Even<br />

under stress c<strong>on</strong>diti<strong>on</strong>, Azospirillun inoculati<strong>on</strong><br />

increased the grain <strong>yield</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> mineral nutriti<strong>on</strong> in<br />

plant under stress (Creus, et al., 2004).<br />

It is thus decided to evaluate <str<strong>on</strong>g>effect</str<strong>on</strong>g>s <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers<br />

<strong>on</strong> <strong>chickpea</strong> <strong>yield</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> its comp<strong>on</strong>ents under different<br />

levels <str<strong>on</strong>g>of</str<strong>on</strong>g> water stress.<br />

Materials <str<strong>on</strong>g>and</str<strong>on</strong>g> methods<br />

To investigate the <str<strong>on</strong>g>effect</str<strong>on</strong>g>s <str<strong>on</strong>g>of</str<strong>on</strong>g> nitragen <str<strong>on</strong>g>and</str<strong>on</strong>g> biosuper, as<br />

bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers<strong>on</strong> <strong>on</strong>e cultivars <str<strong>on</strong>g>of</str<strong>on</strong>g> <strong>chickpea</strong> under the<br />

normal <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> <str<strong>on</strong>g>and</str<strong>on</strong>g> deficit <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>, a research<br />

was carried out at Research Field <str<strong>on</strong>g>of</str<strong>on</strong>g> Islamic Azad<br />

University, Tabriz Branch 15 kilometers east <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

Tabriz, Iran, during growing seas<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> 2008-2009.<br />

Summary <str<strong>on</strong>g>of</str<strong>on</strong>g> experimental <strong>yield</strong> has been depicted in<br />

(Table 1). This study was c<strong>on</strong>ducted in a split plot<br />

experiment with three replicati<strong>on</strong>s, two <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g><br />

levels, four levels <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer arranged in a<br />

r<str<strong>on</strong>g>and</str<strong>on</strong>g>omized complete block design. Normal <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

deficit <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>s were assigned to the main plots,<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers (nitragen, biosuper, nitrogen +<br />

biosuper <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>trol) to sub plots. Plots were 3m ×<br />

2m with four planting rows with 50cm in each part.<br />

<str<strong>on</strong>g>The</str<strong>on</strong>g> distance between plots <str<strong>on</strong>g>and</str<strong>on</strong>g> blocks were<br />

c<strong>on</strong>sidered to be <strong>on</strong>e meter. Based <strong>on</strong> the results <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

the soil test <strong>on</strong>ly 4 kg/ha <str<strong>on</strong>g>of</str<strong>on</strong>g> urea was added into the<br />

soil as starter fertilizer (Table 1). Seeds were<br />

inoculated with <strong>on</strong>e liter <str<strong>on</strong>g>of</str<strong>on</strong>g> nitragin (involving<br />

different c<strong>on</strong>centrati<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> Azotobacter <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

Azospirillum) <str<strong>on</strong>g>and</str<strong>on</strong>g> 2 liters <str<strong>on</strong>g>of</str<strong>on</strong>g> biosuper (c<strong>on</strong>sisting <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

Azotobacter, Azospirillum, soil pathogenic agents’<br />

inhibitor, Basillussubtilis <str<strong>on</strong>g>and</str<strong>on</strong>g> Pseudom<strong>on</strong>as<br />

fluorescens). Plots were irrigated regularly every week<br />

until plants were at flowering stage <str<strong>on</strong>g>and</str<strong>on</strong>g> it stopped in<br />

Rabieyan et al. Page 22


Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pod with <strong>on</strong>e seed<br />

drought stress plots when plants were in 10 percent <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

the bloom.<br />

After pod formati<strong>on</strong>, ten competitive plants were<br />

selected r<str<strong>on</strong>g>and</str<strong>on</strong>g>omly from two middle rows <str<strong>on</strong>g>and</str<strong>on</strong>g> traits<br />

like pod number with <strong>on</strong>e <str<strong>on</strong>g>and</str<strong>on</strong>g> two, seed number per<br />

plant, pods weight per plant, seed weight per plant,<br />

100 seed weight <str<strong>on</strong>g>and</str<strong>on</strong>g> seed <strong>yield</strong> were measured.<br />

Statistical analysis <str<strong>on</strong>g>and</str<strong>on</strong>g> comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> means were<br />

performed by s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware SAS <str<strong>on</strong>g>and</str<strong>on</strong>g> LSD multiple range<br />

test at 5% level <str<strong>on</strong>g>of</str<strong>on</strong>g> probability.<br />

Table 1. Summery <str<strong>on</strong>g>of</str<strong>on</strong>g> experimental field c<strong>on</strong>diti<strong>on</strong>.<br />

Soil<br />

% Clay % Silt % S<str<strong>on</strong>g>and</str<strong>on</strong>g> K ppm P (ppm) T.N (%) O.C (%) % TNV EC (mS/cm) pH Deep (cm)<br />

textural<br />

class<br />

S<str<strong>on</strong>g>and</str<strong>on</strong>g>y loam 7 13 80 380 75/2 0/134 1/56 12 1/21 8/21 30-0<br />

Results <str<strong>on</strong>g>and</str<strong>on</strong>g> discussi<strong>on</strong><br />

Analysis <str<strong>on</strong>g>of</str<strong>on</strong>g> variance <str<strong>on</strong>g>of</str<strong>on</strong>g> data showed that there was a<br />

significant differencein <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> <strong>on</strong> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods<br />

eith two seeds (p


Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pod with two seed<br />

Fig. 1. Effects <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pod with<br />

<strong>on</strong>e seed a1: c<strong>on</strong>trol, a2: nitragen, a3: biosuper, a4:<br />

nitrogen + biosuper.<br />

Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed<br />

Mean comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> the different <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> levels<br />

<str<strong>on</strong>g>effect</str<strong>on</strong>g> <strong>on</strong> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed per plant<br />

showed that complete <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> produced more<br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed per plant by 24/1<br />

relative to water deficit by 14/9 number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with<br />

two seed per plant .So it is indicated 38/17%<br />

reducti<strong>on</strong> in number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed per plant.<br />

An increase in the number <str<strong>on</strong>g>of</str<strong>on</strong>g> lateral roots <str<strong>on</strong>g>and</str<strong>on</strong>g> root<br />

hairs cause additi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> root surface available for<br />

nutrients <str<strong>on</strong>g>and</str<strong>on</strong>g> water uptake. Higher water <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

nutrient uptake by inoculated roots caused an<br />

improved water status <str<strong>on</strong>g>of</str<strong>on</strong>g> plant, which in turn could<br />

be the main factor enhancing plant growth (Askary, et<br />

al., 2009).Mean comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> the different fertilizers<br />

showed that there is a positive interacti<strong>on</strong> between<br />

nitragen <str<strong>on</strong>g>and</str<strong>on</strong>g> biosuper. Thisbi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer increased<br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed per plant <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

treatment nitrogen + biosuper produced more<br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed per plant by 15/28.<br />

<str<strong>on</strong>g>The</str<strong>on</strong>g>re is no significant difference am<strong>on</strong>g other<br />

treatments. Single applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer did not<br />

affect <strong>on</strong> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with <strong>on</strong>e seed per plant,<br />

while there is no significant difference am<strong>on</strong>g these<br />

treatments <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>trol (Figure 2). Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> number <str<strong>on</strong>g>of</str<strong>on</strong>g> seed per plant <str<strong>on</strong>g>and</str<strong>on</strong>g> grain <strong>yield</strong><br />

increased with applied Azotobacter + Azospirillum +<br />

Pseudom<strong>on</strong>as + Mesorhizobium (Rokhzadi, et al.,<br />

2008).<br />

Fig. 2. Effects <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pod with<br />

two seed a1: c<strong>on</strong>trol, a2: nitragen, a3: biosuper, a4:<br />

nitrogen + biosuper.<br />

Table 3.Coefficient correlati<strong>on</strong> in study traits.<br />

<strong>yield</strong> 100 seed<br />

weight<br />

Pod weight<br />

per plan<br />

seed weight<br />

per plan<br />

Number <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

pod with two<br />

seed<br />

1<br />

Number <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

pod with <strong>on</strong>e<br />

seed<br />

1 Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pod with <strong>on</strong>e<br />

seed<br />

.910<br />

Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pod with two<br />

seed<br />

1 .956* .990* seed weight per plan<br />

1 .999** .963* .988* Pod weight per plan<br />

1 .975* .967* .924 .976* 100 seed weight<br />

1 .987* .981* .980* .900 .997** <strong>yield</strong><br />

*,**Significant difference in p=1% <str<strong>on</strong>g>and</str<strong>on</strong>g> p=5%<br />

Seed weight per plant<br />

Mean comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> different fertilizers treatments<br />

showed that applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> nitragin + biosuper<br />

increased seed weight by average <str<strong>on</strong>g>of</str<strong>on</strong>g> 4/47 g/m 2 . Other<br />

treatments produced the same seed weight. <str<strong>on</strong>g>The</str<strong>on</strong>g>re is<br />

no significant difference am<strong>on</strong>g treatments (Figure<br />

3). Applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> biosuper + nitragen fertilizers<br />

enhanced seed weight per plant significantly. Because<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> inoculati<strong>on</strong> with seed, Azospirillum increases root<br />

surface area <str<strong>on</strong>g>and</str<strong>on</strong>g> thus promotes intake <str<strong>on</strong>g>of</str<strong>on</strong>g> nitrogen,<br />

phosphorus, potassium, other nutrients,<br />

water in above ground organs <str<strong>on</strong>g>and</str<strong>on</strong>g> plant dry weight.<br />

Number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods per plant <str<strong>on</strong>g>and</str<strong>on</strong>g> pod weight at harvest<br />

was recorded significantly maximum at combined<br />

inoculati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> (Rhizobium + Azospirillum +<br />

Pseudom<strong>on</strong>as) in field pea (Mishra et al., 2010). <str<strong>on</strong>g>The</str<strong>on</strong>g><br />

Rabieyan et al. Page 24


general physiological status <str<strong>on</strong>g>of</str<strong>on</strong>g> the plants as indicated<br />

by the dry weight always exhibited positive resp<strong>on</strong>se<br />

to use bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer additi<strong>on</strong> (Mekki <str<strong>on</strong>g>and</str<strong>on</strong>g> Amel, 2005).<br />

According to Table 2 there is a significant <str<strong>on</strong>g>and</str<strong>on</strong>g> positive<br />

correlati<strong>on</strong> am<strong>on</strong>g number <str<strong>on</strong>g>of</str<strong>on</strong>g> seed per plant, plant<br />

weight, number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods in main branch,<br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with <strong>on</strong>e seed, number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with<br />

two seed <str<strong>on</strong>g>and</str<strong>on</strong>g> 100 seed weight per plant in reliability<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> <strong>on</strong>e percent <str<strong>on</strong>g>and</str<strong>on</strong>g> there is a significant correlati<strong>on</strong><br />

with seed weight per plant, pod weight per plant <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

<strong>yield</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods per plant, number <str<strong>on</strong>g>of</str<strong>on</strong>g> seed<br />

per plant <str<strong>on</strong>g>and</str<strong>on</strong>g> pod weight per plant in reliability <str<strong>on</strong>g>of</str<strong>on</strong>g> five<br />

percent.<br />

Seed weight per plant (grm 2 )<br />

Fig. 3. Effects <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> seed weight per<br />

plant a1: c<strong>on</strong>trol, a2: nitragen, a3: biosuper, a4:<br />

nitragen+biosuper.<br />

Pod weight per plant<br />

Mean comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> different fertilizers treatments<br />

showed that applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> nitragin + biosuper<br />

increased pod weight by average <str<strong>on</strong>g>of</str<strong>on</strong>g> 5/93 g/m 2 . Other<br />

treatments produced the same pod weight. <str<strong>on</strong>g>The</str<strong>on</strong>g>re is<br />

no significant difference am<strong>on</strong>g treatments (Figure<br />

4). Applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> biosuper + nitragen fertilizers<br />

enhanced pod weight per plant significantly. Because<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> inoculati<strong>on</strong> with seed,Azospirillum increases root<br />

surface area <str<strong>on</strong>g>and</str<strong>on</strong>g> thus promotes intake <str<strong>on</strong>g>of</str<strong>on</strong>g> nitrogen,<br />

phosphorus, potassium, other nutrients, water in<br />

above ground organs <str<strong>on</strong>g>and</str<strong>on</strong>g> plant dry weight. Number<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> pods per plant <str<strong>on</strong>g>and</str<strong>on</strong>g> pod weight at harvest was<br />

recorded significantly maximum at combined<br />

inoculati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> (Rhizobium + Azospirillum +<br />

Pseudom<strong>on</strong>as) in field pea (Mishra et al., 2010). <str<strong>on</strong>g>The</str<strong>on</strong>g><br />

general physiological status <str<strong>on</strong>g>of</str<strong>on</strong>g> the plants as indicated<br />

by the dry weight always exhibited positive resp<strong>on</strong>se<br />

to use bio-fertilizer additi<strong>on</strong>. (Mekki <str<strong>on</strong>g>and</str<strong>on</strong>g> Amel,<br />

2005).<br />

Hundred seed weight<br />

Mean comparis<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> different fertilizers treatments<br />

under different level <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> showed that<br />

applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> nitragen by 29/04g <str<strong>on</strong>g>and</str<strong>on</strong>g> nitrogen +<br />

biosuper by 30/76g increased hundred seed weight.<br />

<str<strong>on</strong>g>The</str<strong>on</strong>g>re was no significant difference between nitragen<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> biosuper. C<strong>on</strong>trol treatment produced less<br />

hundred seed weight by 23/59g under complete<br />

<str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>. Applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> 27/84g nitrogen + biosuper<br />

increased hundred seed weight under water deficit.<br />

24/06g biosuper produced less hundred seed weight<br />

indicating negative reacti<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> the bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizerunder<br />

water stress. Since under water stress, the ideal<br />

c<strong>on</strong>diti<strong>on</strong> is reduced for activity <str<strong>on</strong>g>of</str<strong>on</strong>g> bacteria, so it leads<br />

to negative <str<strong>on</strong>g>effect</str<strong>on</strong>g> <strong>on</strong> plant (Figure 5). Such an <str<strong>on</strong>g>effect</str<strong>on</strong>g><br />

result in higher 100 seed weight <str<strong>on</strong>g>and</str<strong>on</strong>g> higher grain<br />

<strong>yield</strong> grap in the tropics from dry seas<strong>on</strong> or low<br />

<str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> crops compared to wet or complete<br />

<str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> crops because <str<strong>on</strong>g>of</str<strong>on</strong>g> higher irradianc (Yang et<br />

al., 2008). Ibeawuchi <str<strong>on</strong>g>and</str<strong>on</strong>g> Onweremalu (2007) in an<br />

experiment showed that, at frist <str<strong>on</strong>g>of</str<strong>on</strong>g> all the highest<br />

1000 seed weight was in integrated fertilizer<br />

treatments. Improved plant growth by A. brasilense<br />

has been attributed both to producti<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> plant<br />

horm<strong>on</strong>es, especially growth promoters <str<strong>on</strong>g>and</str<strong>on</strong>g> by<br />

supplying combined nitrogen (Pedraza et al., 2007).<br />

Fig. 4. Effects <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> pod weight per plant a1:<br />

c<strong>on</strong>trol, a2: nitragen, a3: biosuper, a4:<br />

nitragen+biosuper.<br />

Yield: Mean comparis<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> different fertilizers<br />

treatments showed that applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> nitragin +<br />

Rabieyan et al. Page 25


100 seed weight<br />

biosuper by 89/39 g/m 2 produced more <strong>yield</strong>.<br />

Applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> single bio-fertilizer did not affect <strong>on</strong><br />

<strong>yield</strong> positively. <str<strong>on</strong>g>The</str<strong>on</strong>g>re was no significant difference<br />

am<strong>on</strong>g nitragin,<br />

biosuper <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>trol treatments(Figure 6).Bacteria<br />

have beneficial <str<strong>on</strong>g>effect</str<strong>on</strong>g> <strong>on</strong> plant growth <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong>, <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

because they fix atmospheric nitrogen <str<strong>on</strong>g>and</str<strong>on</strong>g> release<br />

auxins to the root z<strong>on</strong>e to enhance growth (Rees et al.,<br />

2009). Ali et al. (2008) who reported that seed<br />

inoculated plants. Exhibited significantly greater <strong>yield</strong><br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> comp<strong>on</strong>ent <strong>yield</strong> in garden pea. Co-inoculati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

wheat seeds with Azotobacter <str<strong>on</strong>g>and</str<strong>on</strong>g> Azospiriilum had<br />

positive significant <str<strong>on</strong>g>effect</str<strong>on</strong>g>s <strong>on</strong> the grain <strong>yield</strong>s about<br />

average 53/8% higher compared to n<strong>on</strong> inoculati<strong>on</strong><br />

plant (Askary, et al., 2009). Additi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizer<br />

promotes bacteria resp<strong>on</strong>se to nitrogen fixati<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

soil fertility. High atmospheric nitrogen fixati<strong>on</strong><br />

increases growth <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong> (El-Desuki et al., 2010).<br />

b1 b2 b3 b4<br />

35<br />

30<br />

25<br />

23.59<br />

29.04<br />

28.47<br />

30.76<br />

25.35<br />

24.85<br />

24.06<br />

27.84<br />

20<br />

15<br />

10<br />

5<br />

0<br />

a1<br />

a2<br />

LSD 3.19<br />

Fig. 5. Interacti<strong>on</strong> <str<strong>on</strong>g>effect</str<strong>on</strong>g> <str<strong>on</strong>g>of</str<strong>on</strong>g> fertilizer * <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g> <strong>on</strong> 100 seed weight a1: normal <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>, a2: deficit <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>,<br />

b1: c<strong>on</strong>trol, b2: nitragen, b3: biosuper, b4: nitragen+biosuper.<br />

According to Table 3 there is a significant <str<strong>on</strong>g>and</str<strong>on</strong>g> positive<br />

correlati<strong>on</strong> am<strong>on</strong>g <strong>yield</strong>, plant weight, seed weight per<br />

plant, pod weight per plant, 100 seed weight per plant<br />

in number <str<strong>on</strong>g>of</str<strong>on</strong>g> seed per plant in reliability <str<strong>on</strong>g>of</str<strong>on</strong>g> five<br />

percent <str<strong>on</strong>g>and</str<strong>on</strong>g> there is a significant <str<strong>on</strong>g>and</str<strong>on</strong>g> positive<br />

correlati<strong>on</strong> am<strong>on</strong>g number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods per plant, number<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> pods in main branch <str<strong>on</strong>g>and</str<strong>on</strong>g> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with <strong>on</strong>e<br />

seed in reliability <str<strong>on</strong>g>of</str<strong>on</strong>g> <strong>on</strong>e percent.<br />

Yield (grm 2 )<br />

C<strong>on</strong>clusi<strong>on</strong><br />

<str<strong>on</strong>g>The</str<strong>on</strong>g> results show that applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilzer<br />

adjusts water deficit in general. Under complete<br />

<str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>, number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed was<br />

increased 38/73 % by 24/1relative to water deficit by<br />

14/9 number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods with two seed. Applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

bio-fertilzers enhances number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods in lateral<br />

branch. Using nitrogen + biosuper increases plant<br />

weight, seed weight per plant, pod weight per plant ,<br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> seed per plant ,number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods per plant ,<br />

number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods in main branch <str<strong>on</strong>g>and</str<strong>on</strong>g> number <str<strong>on</strong>g>of</str<strong>on</strong>g> pods<br />

with <strong>on</strong>e seed <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong>. <str<strong>on</strong>g>The</str<strong>on</strong>g>re is no significant<br />

difference am<strong>on</strong>g nitragen, biosuper <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>trol<br />

treatments statistically. Applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> nitrogen +<br />

biosuper increases seed weight per plant, 100 seed<br />

weight <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>yield</strong> under complete <str<strong>on</strong>g>irrigati<strong>on</strong></str<strong>on</strong>g>.<br />

Fig. 6. Effects <str<strong>on</strong>g>of</str<strong>on</strong>g> bi<str<strong>on</strong>g>of</str<strong>on</strong>g>ertilizers <strong>on</strong> <strong>yield</strong> a1: c<strong>on</strong>trol,<br />

a2: nitragen, a3: biosuper, a4: nitragen+biosuper<br />

Rabieyan et al. Page 26


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