Scientific Papers Series A. Agronomy

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RESULTS AND DISCUSSIONS x, k, r, R 2 and sig. values concerning the drippers tested in the proposed operating pressure (1 ATM) for the determination of the features of the drippers were found as shown in Table 3. Table 3. Dripper x, k, r, R2 and significance values. Type of Dripper x k r R 2 Sig. A 0.3897 0.6297 0.994 0.982 0.006** B 0.3561 1.0807 0.997 0.991 0.003** C 0.1567 0.7109 0.980 0.941 0.020* According to the results of table 3, r values in the experiment came out between 0.980 and 0.997, which shows that the linear correlations between the pressure of all the drippers and the flow rate is very strong. After inspecting the levels of importance, it is seen that the results of A and B types of drippers are very important (P
Pressure (ATM) 0.5 1 1.5 2 Table 5. CVm, Us and EU values of the drippers used in the experiment and their classification CVm Class 6.59 G 3.96 E 3.06 E 3.34 E Company A B C Us EU CVm Us EU Class Class Class Class Class CVm Class Us Class 93.40 91.20 5.62 94.70 92.92 6.58 E G-E G G-E G-E G 93.41 G-E 96.03 95.72 4.62 95.37 94.17 6.54 E E E E E G 93.45 G-E 96.93 95.84 3.88 96.11 95.25 6.24 E E E E E G 93.75 G-E 96.65 96.11 3.39 96.90 95.65 5.66 E E E E E G 94.33 G-E EU Class 91.49 G-E 91.19 G-E 91.90 G-E 92.61 G-E Bozkurt (1996) in his research ascertained that CVm values were changing jointly with the pressure, however the change rates of the pressure regulated drippers are more than the pressure unregulated ones. Similar results were attained in the experiments based upon this research (Table 5). While the ranges of CVm values in the pressure unregulated dripper type A and B were around 1%, the measurements of the pressure regulated type C dripper did not exceed 1% except those in 2 atm. As it can be observed in the Table 5, CV values of the dripper type A and B classified as “excellent” is the indication of the fact that the drippers water application quantities are similar. As CVm values of the dripper type C remained under 5%, which is the ASAE standard, it was seen that the homogeneity of the dripper type C in terms of the manufacturing were not as high as dripper A and B and their homogeneity of water application were poor (Figure 2). Figure 2. CVm-Pressure Relations of the drippers used in the experiment The dripper type that had the highest Us value in accordance with the measurements conducted was the type A dripper, which also had the lowest CVm coefficient (1.5 ATM). Çamolu (2004) in his research tested 17 drippers under 1.0 ATM pressure and found out that the Us values of 65% of the in-line drippers remained over 95% while 67% of the in-line drippers in our experiments were over 95% (Figure 3). While the EU values in the dripper A stabilized after 1 atm, an increase was observed in the dripper B together with the pressure. The EU value of the dripper C started to increase after 1 atm pressure. The highest EU value was observed in the type A dripper (Figure 4). In accordance with the 95% Cu principle under 1.0 atm pressure as Wu and Gitlin (1974) states, the dripper type C was below this level while the dripper type A and B were over it. The results obtained from the experiment shows us that – as we take the loss of pressure and friction in the experiment were negligible – the difference of structural coefficients caused these values. In order to ensure Cu95% condition of the dripper B, it was deemed suitable to operate equal and over 1 atm pressures (Figure 5). 548
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SCIENTIFIC PAPERS SERIES A. AGRONOM
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University of Agronomic Sciences an
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SUMMARY SOIL SCIENCES Variation of
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A survey study on determination of
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Effects of different nitrogen forms
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Determine the effect of some cultiv
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SOIL SCIENCES
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K + /Na + ratio that ultimately pre
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ZINC POLLUTION OF SOILS LOCATED INT
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as the result of the plant protecti
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OBTAINING OF HUMATE-BASED LIQUID FE
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an 11.6% mass loss and a 145.5 J/g
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mijloc important de fertilizare ech
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collected on 13/09/2012 at the dept
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Table 3. The Influence of mineral f
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CONCLUSIONS The Hybrid rapeseedseed
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Scientific Papers. Series A. Agrono
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CONCLUSIONS The results have shown
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organic carbon was determined thoug
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THE INFLUENCE OF SOIL TILLING SYSTE
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emerging plant, we recommend using
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at the cellular level of Ni (Bou et
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concentrations in agricultural soil
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Surfaces at the bottom shows higher
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substantial balance that means maxi
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Table 4. Aggregate composition and
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1. The initial parameters of ordina
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Table 8. Modification of the featur
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Abstract Scientific Papers. Series
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the linear correlation coefficient
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CONCLUSIONS For soil polluted with
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50 and 100 mg/kg and appreciated th
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Figure 4. Copper content in soil Fi
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samples collected in northern of fa
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MATERIALS AND METHODS Study areas T
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influenced by heavy metals contamin
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Pankhurst C.E., 1997. Biodeversity
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horizons, color, texture, structure
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From a chemical reaction these soil
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- Organic matter by Tiurin; - pH (H
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RESULTS AND DISCUSSIONS Invertebrat
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of moisture in arable layers, incre
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experimentation. The increase of mo
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THE TRANSITION PERIOD TO THE MARKET
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Activity data Activity data comes f
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Figure 2. The decrease of cultivate
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of nitrous oxide. In: Revised 1996
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Laboratory results have been interp
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The air-mass interferes with the ov
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Under these conditions, Moldavian r
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decreased to near wilting coefficie
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CONCLUSIONS Severe drought that aff
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(temperature and soil moisture, air
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primary cultures analyzed, hybrids
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weeding crops during the growing se
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improper drainage and irrigation (G
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Figure 4. Scores plot of the soil s
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Table 1. Cluster analysis of the st
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DIFFERENTIATION OF FERTILIZATION RA
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Figure 2. Situation and location of
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Statistical data processing For the
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Phosphorus and potassium fertilizer
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30 m. Regarding the formation and d
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considerably less. These facts are
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Table 2. Hydraulic dimensioning Par
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SPATIAL VARIATION OF PHYSICAL CLAY
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Figure 2. Situation and location of
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esistant to high clay content in th
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CONCLUSIONS Described regularities
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ecome widespread and in order to ea
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Table 3. Results of the analysis of
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COMPARISON OF SYSTEMS FOR TAXONOMY
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RESULTS AND DISCUSSIONS Soil types
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underdeveloped cinnamon forest soil
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Figure 8. Content of skeletal fract
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MODEL FOR INVESTIGATION, AMELIORATI
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RESULTS AND DISCUSSIONS Characteris
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terrain is in the composition of a
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Such characteristics require the ne
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Australia) with high resolution nit
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some important medicinal plants of
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RFV = [120 / NDF] × [88.9 - (0.779
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average at Viani - Brila County). A
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Figure 1. Dry above-ground biomass
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County) and 30.29% (CERA 270 hybrid
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phenological stages were found to h
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STUDIES REGARDING THE INFLUENCE OF
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ainfall were able to have a negativ
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Figure 7. Thermo-hydric stress fact
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In Romania is grown a large assortm
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Mainly vitamin C, E and polyphenols
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soluble compounds with antioxidant
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primarily the water-soluble antioxi
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has a split-split-plot design with
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Kovács B., Gyori Z., Prokisch J.,
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pays off (Mares et al., 2004; Gonz
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Table 3. Tested variants V1 Control
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about the inner value of flora. The
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MATERIALS AND METHODS Biological ma
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Figure 2. Correlation between prote
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CONCLUSIONS Production and quality
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The following presents several tech
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3. Evolution of total weed number i
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RESEARCH ON APPLICATION OF NPK FERT
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Also increase production significan
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In April 2012, the pre-sowing proce
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difference with the hoed control sa
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RESULTS AND DISCUSSIONS Data about
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Table 7. Proved difference between
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Table 1. Variance analysis experien
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Amongst the three precocity groups,
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ACKNOWLEDGEMENTS This study was car
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to present genetic sources of resis
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REFERENCES Antonova T.S., Araslanov
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Halstedii is necessary to identify
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EFFICIENCY OF UTILIZATION OF ASELEC
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to separate the effects of genotype
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INFLUENCE OF THE CLIMATIC CONDITION
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In 2012, at NARDI Fundulea, data fr
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parameter from the treated variants
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Table 6. The effectiveness of some
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Table 1. Probability of the meteoro
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At 50% DI in EOF, only a small part
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This was probably due to the specif
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under deficit irrigation. This prov
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RESULTS AND DISCUSSIONS Intervals w
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productions from one year to anothe
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epresented by soil ecologization an
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new created ones as a basic conditi
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The highest number of kernels per e
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Table 8. Average weight of thousand
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CONCLUSIONS The drought from the ye
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IWM as appropriate, necessary studi
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100% in the first 6 weeks of growth
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locules boll -1 (0.02), seeds locul
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Bhutto H., Baloch M.J., Yousaf M.,
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Table 4. GCA effects for morpho-yie
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MATERIALS AND METHODS This study wa
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vegetation of each of the swaths, i
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Sudangrass hybrids depending on the
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The parameters of biomass and dry m
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transplanting and ½ applied at fir
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Fertilization Forms Table 2. The me
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growing agricultural farms; evoluti
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In this area, priority must be to p
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soybean seeds are found farms that
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are a better material for haploid i
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Figure 6. Embryo and endosperm mark
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RESEARCHES CONCERNING THE INFLUENCE
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Table 1. The influence of seeding d
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Exagone hybrid. Thus, when sown at
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Table 9. The influence of sowing di
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MATERIALS AND METHODS In order to k
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Table 3. Genotype influence on whea
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Romanian varieties from the experim
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Table 2. Efficacy of some fungicide
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ROMANIAN WHEAT - STRATEGIC PRODUCT
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exceeded 2,000 thou ha, and maximum
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Values over 26% wet gluten were det
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effective and can build a significa
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grassland. This method is commonly
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RESULTS REGARDING DROUGHT RESISTANC
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average for this period is 170.6 mm
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Hybrid FAO grupe Table 2. The main
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length has lowest values at the unt
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CHARACTERISTICS OF SECOND GENERATIO
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developed in Dobrudzha Agricultural
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Table 5. Cytological characteristic
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We can see in the table that all li
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RESULTS AND DISCUSSIONS Mean compar
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Table 4. Statistical interpretation
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COMPARATIVE STUDY OF CONVENTIONAL A
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Improved sunflower hybrids for use
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differences in production to contro
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International Center for Agricultur
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Table 3. Evaluation of Genotypes fo
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Table 1. Characteristics of city sl
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Table 4. Amount of the rainfall dur
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ECOLOGICAL AGRICULTURE
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maize had a density of 5 plants/m 2
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CONCLUSIONS In terms of productivit
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amino acids, such as 4-hydroxyisole
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Table 5. Determining chlorophyll pi
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PROPOSALS ON TECHNOLOGY OF MOVING A
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These are the main technical charac
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FUNGAL BIODIVERSITY AND CLIMATE CHA
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Climate change effects and Dobrogea
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Figure 10. Pure culture of benefici
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MANAGEMENT OF BENEFICIAL MICROORGAN
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microorganisms DSMZ Braunschweig -
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Protocol of research and reporting
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“HERBAL MEDNET” AN INNOVATIVE A
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Figure 2. Value of global herbal ma
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Figure 3. The Allelopathy effect on
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AGRICULTURAL ENGINEERING AND RENEWA
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Research was also aimed at observin
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Leaf production of dry matter per h
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cooking oil and jatropha oil (Vonsh
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machines, many different fat extrac
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Table 4. The nutrient content Conte
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Figure 21. Dunaliella salina sp. ch
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for the decline is the growing numb
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Tractor power seemed the obvious wa
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Figure 4 shows that in 17 post war
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their employability, help raise the
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. Scientific Papers. Series A. Agro
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through the sprinkler irrigation. A
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Figure 5. Overlapping sprinklers wi
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CLIMATE CHANGE AND AGROMETEOROLOGIC
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Bulgaria to the use of agroclimatic
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Figure 9. Duration of the period so
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Figure 18. Evapotranspiration of wi
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RESULTS AND DISCUSSIONS After scari
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The influence of the texture on the
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Figure 6. Area of land planted with
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APPLIED BIOLOGY IN AGRICULTURAL SCI
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MATERIALS AND METHODS Researches we
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RESEARCHES REGARDING EVOLUTION OF S
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gradually reduce towards the end of
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According to that, the aspect of th
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etween classes of variation with ma
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Table 2. Average heights of Lycium
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V 1 V 2 Table 6. Average shoot leng
Page 497 and 498: Table 13. Average dry substance of
Page 499 and 500: Abstract Scientific Papers. Series
Page 503 and 504: centrifuge (7000 rev/min. during 20
Page 505 and 506: 7, Streptomyces sp. 9, and Streptom
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Page 509 and 510: SOME NEW SPECIMENS FOR ZOOLOGICAL T
Page 511 and 512: New reptiles for our teaching colle
Page 514 and 515: Scientific Papers. Series A. Agrono
Page 516 and 517: Figure 1. Scatter plot of odontosty
Page 518 and 519: Table 4. Measurements of Xiphinema
Page 520 and 521: Malus pumila and P. avium are new h
Page 522 and 523: - the mean, minimum and maximum mon
Page 524 and 525: The monthly mean of the flow highli
Page 526 and 527: longer in balance with the existing
Page 528 and 529: ecording the encountered plant spec
Page 530 and 531: Mediterranean (3), Balkan (1), Cent
Page 532 and 533: Table 3. Segetal species of the Top
Page 534 and 535: Scientific Papers. Series A. Agrono
Page 536 and 537: of sugar/flower and the honey poten
Page 538 and 539: Territorial concentration of mellif
Page 540 and 541: CONCLUSIONS In Giurgiu County there
Page 542 and 543: farm (Awake, 1998). Rahman et al. 2
Page 544 and 545: Table 3 shows that there was a high
Page 550 and 551: Figure 3. Us-Pressure Relations of
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