Scientific Papers Series A. Agronomy

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Hybrid FAO grupe Table 2. The main morphological characteristics of maize hybrids tested in 2012 0 C Entire vegetation stages Plant height (cm) Ear cob insertion (cm) Number of leaes Ear cob Number of length husk leaves (cm) Rachis width (cm) Rows of kernels Kernel depth(cm) SVWTKW GW 9003 370 3064 230 90 16.5 6.5 19.0 2.4 12-14 1.1 63.4 296 KONSUR 590 3055 210 86 15.0 7.3 17.0 2.3 14-16 1.0 68.3 334 GW 8008 450 2951 240 95 14.5 7.0 19.1 2.1 14 1.0 65.0 208 GW 8194 340 2942 230 95 15.0 8.5 18.5 2.3 14-16 1.0 62.0 259 GW 8653 330 3019 260 110 17.0 8.3 18.3 2.3 14-16 1.1 71.0 234 GW 8002 380 2995 225 95 17.0 9.0 16.0 2.2 12-14 1.1 68.1 306 GS-2/12 290 2972 230 96 17.0 9.0 18.0 2.4 14-16 1.0 71.0 271 GS-3/13 300 2952 220 90 16.5 10.0 16.2 2.1 14 1.0 70.7 257 GW 1691 400 2951 210 80 15.0 11.5 16.0 2.4 14 0.9 73.5 282 UNIMEZEA 350 3078 220 90 15.0 10.0 17.0 2.2 12-14 1.0 77.1 309 STATUS 480 3063 190 70 15.0 12.0 16.0 2.1 12-14 0.9 76.2 252 EFRAT 290 2947 210 75 14.1 12.0 16.2 2.3 14-16 0.9 74,1 283 GW 8037 280 3005 270 125 16.2 8.0 18.5 2.3 14-16 1.1 70.0 247 GS-4/12 280 2929 240 90 16.0 8.5 16.5 2.4 16-18 1.1 72.5 246 Between the vegetation period and moisture at harvesting, a very strong correlation was emphasized (Figure 9). Breeding maize for sustainable agriculture implies releasing hybrids with high yielding ability and low moisture at harvest. Fast grain dry-down rate hybrids may be harvested in grain and the crop may be immediately stored, with low costs. These issues might be solved by growing maize hybrids with a shorter period of vegetation, but important quantity of maize would be lost by incomplete utilization of favorable thermal resources on more than 50% from total maize area from Southern and Western Romania. The tested hybrids belong to different FAO maturity groups, those between 280–590 (Table 2). The drought and heat especially, led to a shortening of vegetation period, causing forced maturation of the late genotypes. Due to very high temperatures during yield formation under both dryland and irrigation, a high number of sterile plants was among tested genotypes was recorded (Figure 8). This highlights once again, the opportunity of performed researches. These data demonstrate that releasing maize hybrids with increased resistance to drought and heat had been necessary for both irrigated and dryland area from Southern plains, with environmental conditions similar to those of Caracal and Braila. Subsequently, a field trials research was developed according to the following principles: - hybrids released under irrigated conditions should be tested in both optimal and water stress conditions, aiming the promotion of those with superior mean performance; 351 - hybrids released under dryland conditions (drought tolerant) should be tested, also, under irrigations in order to select those with economic yielding potential suitable for such environments. Figure 8. Relationship concerning the degree of steril plants in dry and irrigated land Figure 9. Relationship between the group of maturity and moisture
CONCLUSIONS The maize hybrids tested in 2012, represent a new germplasm with a large variability regarding yielding and adaptability. Hybrids Unimeza, GW 9003, Efrat, GW 8691 and GW 8002 revealed the highest heat and drought tolerance. These hybrids have good adaptability level, being able to use the irrigation water. The semi-early GW 8037 hybrid revealed itself only under heat and drought conditions. Hybrids GW 8008, Konsur, Status and GW 8653 are recommended only to crop in optimal water conditions. ACKNOWLEDGEMENTS Golden West Company, E. Constantinescu (PhD, ARDS Caracal), R. Cooveanu (PhD, ARDS Brila). REFERENCES Bänziger M., Araus J.L., 2007. Recent advances in breeding maize for drought and salinity stress tolerance. pp 587-601, link.springer.com. Bîlteanu Gh., 1998. Fitotehnie, vol.1. Ed. Ceres, p. 187- 309. Cbulea I., Sarca T., Cristea M., 2004. Porumbul - studiu monografic. Ed. Academiei Române, p. 207-296. Schitea L.F., 2011. Partial experimental results regarding the influence of corn hybrid on grains yield in the Romanian plain under climatic changes. Scientific Papers UASVM Bucharest, Series A, Vol. LIV Agronomy, p. 326-331. Sin Gh., 2005. Managementul tehnologic al culturilor de câmp. Edit. Ceres, Bucureti. Tollefson J., 2011. Drought-tolerant maize gets US debut. Published online 11 January 2011 | Nature 469, 144| doi:10.1038/469144a. Tollenaar M., Wu J., 1999. Yield improvement in temperate maize is attributable to greater stress tolerance. Crop Sci. 39, p.1597–1604. 352
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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
Page 302 and 303: Sudangrass hybrids depending on the
Page 304 and 305: The parameters of biomass and dry m
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Page 308 and 309: Fertilization Forms Table 2. The me
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Page 318 and 319: Figure 6. Embryo and endosperm mark
Page 320 and 321: RESEARCHES CONCERNING THE INFLUENCE
Page 322 and 323: Table 1. The influence of seeding d
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Page 326 and 327: Table 9. The influence of sowing di
Page 328 and 329: MATERIALS AND METHODS In order to k
Page 330 and 331: Table 3. Genotype influence on whea
Page 332 and 333: Romanian varieties from the experim
Page 334 and 335: Abstract Scientific Papers. Series
Page 336 and 337: Table 2. Efficacy of some fungicide
Page 338 and 339: ROMANIAN WHEAT - STRATEGIC PRODUCT
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Page 342 and 343: Values over 26% wet gluten were det
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Page 348 and 349: RESULTS REGARDING DROUGHT RESISTANC
Page 350 and 351: average for this period is 170.6 mm
Page 354 and 355: Abstract Scientific Papers. Series
Page 356 and 357: length has lowest values at the unt
Page 358 and 359: CHARACTERISTICS OF SECOND GENERATIO
Page 360 and 361: developed in Dobrudzha Agricultural
Page 362 and 363: Table 5. Cytological characteristic
Page 364 and 365: Scientific Papers. Series A. Agrono
Page 366 and 367: We can see in the table that all li
Page 368 and 369: RESULTS AND DISCUSSIONS Mean compar
Page 372 and 373: Table 4. Statistical interpretation
Page 374 and 375: COMPARATIVE STUDY OF CONVENTIONAL A
Page 376 and 377: Improved sunflower hybrids for use
Page 378 and 379: differences in production to contro
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Page 382 and 383: Table 3. Evaluation of Genotypes fo
Page 384 and 385: Table 1. Characteristics of city sl
Page 388 and 389: Table 4. Amount of the rainfall dur
Page 390: ECOLOGICAL AGRICULTURE
Page 393 and 394: maize had a density of 5 plants/m 2
Page 395 and 396: CONCLUSIONS In terms of productivit
Page 397 and 398: amino acids, such as 4-hydroxyisole
Page 401 and 402: 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
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Table 13. Average dry substance of
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centrifuge (7000 rev/min. during 20
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7, Streptomyces sp. 9, and Streptom
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laboratory of Biology, USAMV Buchar
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SOME NEW SPECIMENS FOR ZOOLOGICAL T
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New reptiles for our teaching colle
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Figure 1. Scatter plot of odontosty
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Table 4. Measurements of Xiphinema
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Malus pumila and P. avium are new h
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- the mean, minimum and maximum mon
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The monthly mean of the flow highli
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longer in balance with the existing
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ecording the encountered plant spec
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Mediterranean (3), Balkan (1), Cent
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Table 3. Segetal species of the Top
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of sugar/flower and the honey poten
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Territorial concentration of mellif
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CONCLUSIONS In Giurgiu County there
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farm (Awake, 1998). Rahman et al. 2
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Table 3 shows that there was a high
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RESULTS AND DISCUSSIONS x, k, r, R
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Figure 3. Us-Pressure Relations of
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