@article { author = {}, title = {Growth Analysis and Yield Response of Barley as Affected by Irrigation Regimes}, journal = {Egyptian Journal of Agronomy}, volume = {35}, number = {1}, pages = {1-19}, year = {2013}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2013.90}, abstract = {THIS STUDYwas conducted to evaluate twenty covered barley (Hordeum vulgare L.) genotypes for high yield potential and stable performance under two irrigation treatments (irrigated and water stressed).Totaldry matter accumulation (TDM), leaf area index (LAI), crop growth rate (CGR), net assimilation rate (NAR), relative growth rate (RGR), relative water content (RWC), relative chlorophyll content (RCC), grain yield and biological yield were evaluated during two successive seasons 2009/10 and 2010/11 at Sakha Res. Station. All parameters studied had a negative significant effects as a result of water stressin both growing seasons, except for relative chlorophyll content, which increased under stress conditions compared with the normal irrigation. Results showed that L4 and L8 genotypes had the heaviest biological yieldandgrain yield, where they had the highest values of TDM, LAI and CGR especially under stress condition, as well as possessed good values of NAR, RGR and RCC, revealing that these genotypes were more tolerant to water stress and more desirable genotypes for both stress and non-stress conditions.}, keywords = {Hordeum vulgare L,Water stress,Irrigation regime,growth analysis}, url = {https://agro.journals.ekb.eg/article_90.html}, eprint = {https://agro.journals.ekb.eg/article_90_3ac846af7ea9d101841fab8d96a3da89.pdf} } @article { author = {}, title = {Effect of Irrigation Water Levels and Anti-transpirants on Productivity of Sesame (Sesamum indicum L.) Plant at New Valley, Egypt}, journal = {Egyptian Journal of Agronomy}, volume = {35}, number = {1}, pages = {21-35}, year = {2013}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2013.91}, abstract = {TWO FIELD experiments were carried out at the El-Kharga Experimental …. Farm of Desert Research Center Al- Wadi Al- Gadeed Governorate in a sandy clay loam soil, during 2011and 2012, with the aim effect of irrigation water levels and two anti-transpirants agents, (Glycerol and Magnesium carbonate) at two different concentrations (2% and 4%) compared with the control on yield and yields components of sesame (Sesamum indicum L.) cv., Giza 32. Four irrigation water levels were used 110, 90, 70 and 50% from crop evapotranspiration (ETcr) and anti-transpirants. Obtained results was showed that increasing irrigation water levels from 50 up to 110% (ETcr) caused significant increase in the investigated characters such as plant height (cm); 100- seed weight (g); biological yield (kg/fad); seed yield (kg/fad) and oil yield (kg/fad), except protein percentage (%) a clear decreasing. Oil ratio was decreased, as the severity of water deficient increased. In contrast, the protein percentage of seeds increased by increasing water limitation. Glycerol at 4% was increased significantly all parameters plant height (cm), 100-seed weight (g), biological yield (kg/fad), seed yield (kg/fad), oil and protein yields (kg/fad) and better than the other treatments. The highest values for parameters were observed under 110% ETcr irrigation water levels and Glycerol, at 4%. On the other hands, seed yield (kg/fad) reduction under severe deficient (50% ETcr) conditions and the control anti-transpirants.}, keywords = {irrigation water levels,Anti-transpirants,glycerol,Magnesium carbonate, (Sesamum indicum L)}, url = {https://agro.journals.ekb.eg/article_91.html}, eprint = {https://agro.journals.ekb.eg/article_91_5051e982083138bda4b7f5cca1070a96.pdf} } @article { author = {}, title = {Effect of Salicylic acid, Biofertilization and Sowing Dates on Peanut (Arachis hypogaea L.) Yield under Semi-arid Conditions}, journal = {Egyptian Journal of Agronomy}, volume = {35}, number = {1}, pages = {37-64}, year = {2013}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2013.92}, abstract = {TWO FIELD experiments were carried out in El-Kharga Experimental Farm of Desert Research Center, Al- Wadi Al- Gadeed Governorate in a sandy clay loam soil, during two summer seasons of 2010 and 2011 to study the effect of salicylic acid application, biofetilization and sowing dates on yield and its components, and the chemical composition of peanut (Giza, 6 cultivar). The study included four levels of salicylic acid, i.e., zero salicylic acid, 100, 150 and 200 ppm salicylic acid(SA), four different biofertilization treatments, i.e., without biofertilization (Br), Bacillus megatherium (PDB),Pseudomonas fluorescence (PS) and mixed biofertilization treatment (PDB+PS), Rhizobia was applied as base treatment and three sowing dates: April 20th, May 15th and June 10th . The studied factors were arranged in a split- split design with four replications, where sowing date constituted the main plots, salicylic acid was arranged in the sub plots and biofertilizations were occupied sub-sub plots. Based on yield and yield components data, it was concluded that the early sowing (April 20th) produced the highest significant parameters of peanut plants; plant height, weight of pods per plant, number of pods per plant, 100-seeds weight, pod and seed yields and protein and oil yields. On the reverse,the lowest values were obtained at late sown (June, 10th) throughout the studied two seasons (2010 and 2011). Early sown gave the chance of growing plant to complete all of its physiological processes (vegetative and reproductive processes) at proper time than that of late sown. Delaying of peanut sowing till (June, 10th) caused a decline in all of the studied parameters throughout the studied seasons. Increasing SA levels from 100 to 200 ppm increased significantly all the studied parameters as compared with control in the studied two seasons. Mixed biofertilization treatment had a significant effect on yield and its components as compared with the single biofertilization treatments. Also, biofertilization treatment resulted in higher values of soil microbiological properties, i.e. total microbial counts, counts of phosphate dissolving bacterial (PDB), Pseudomonas count and nodule characteristics.}, keywords = {Sowing times,Salicylic acid,biofertilization,Heat stress conditions,Peanut}, url = {https://agro.journals.ekb.eg/article_92.html}, eprint = {https://agro.journals.ekb.eg/article_92_aab85833e720b3b662ba53fd48849dc7.pdf} } @article { author = {}, title = {Correlation and Path Coefficient Analysis of Some Quantitative Characters in Canola Oil (Brassica napus L.).}, journal = {Egyptian Journal of Agronomy}, volume = {35}, number = {1}, pages = {65-75}, year = {2013}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2013.93}, abstract = {BOTH GENOTYPIC and phenotypic correlation coefficient forsome quantitative characters considered of yield and qualitywere studied in experimental farm, Environment Studies and Research Institute, Minufiya University at Sadat city,Minufiya Governorate, Egypt, during (2009/2010) and (2010/2011). Seven accessions of (Brassica napus L.) were studied. The results showed that a wide range of genetic variation existed among all studied traits over all varieties in both studied years. Genotypic correlation coefficient analysis revealed that seed yield per plant were positively and highly significant. correlated with number of siliquas per plant (0.99,0.95), number of seeds per siliquas (0.95,0.95),number of secondary branches per plant (0.87,0.96) and number of primary branches per plant (0.80, 0.96) in both seasons, respectively. However negative correlation with days to 50%flowering (-0.49, -0.29) in both seasons,respectively. Also non-significantly associated with oil content and 1000 seed weight in the second year were found. The path coefficient analysis showed the major role of indirect effects for almost studied characters on seed yieldtraits. So number of siliquas per plant followed number of seeds per siliqua, number of secondary branches and number of primary branches are the best criteria for yield improvement in rapeseed by selection program.}, keywords = {Brassica napus,canola oil,correlation coefficient,path coefficient}, url = {https://agro.journals.ekb.eg/article_93.html}, eprint = {https://agro.journals.ekb.eg/article_93_1f10968ff32faf30bd41df378c805f32.pdf} } @article { author = {}, title = {Response of Sugar Beet (Beta vulgaris L.) to Potassium and Sulphur Supply in Clayed Soil at North Delta, Egypt}, journal = {Egyptian Journal of Agronomy}, volume = {35}, number = {1}, pages = {77-91}, year = {2013}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2013.94}, abstract = {THE SUGAR beet (Beta vulgaris L.) cultivar “Farida” was grown on a clayed soil at Agricultural Research Station, Agricultural Research Center, Egypt, during 2011/2012 and 2012/2013 years. The aim of this study is to study growth, yield and quality response of sugar beet cultivar "Farida" to three potassium rates (12, 24 and 48 kg K2O/feddan) (feddan (fed)= 0.42 hectare) and three sulphur rates (0, 125 and 250 kg S/fed) in clayed soil at North Delta, Egypt. Application of potassium fertilizer at the rate of 48 kg K2O/fed resulted in a substantially increase in leaf area index (LAI) and dry matter accumulation (g/plant), root length (cm), root diameter (cm), root weight (g), root yield (ton/fed), top yield (ton/fed), total sugar (%), concentration of K, alkalinity coefficient, extraction of white sugar (%), losses sugar (%) and white sugar yield (ton/fed) compared with the rate of 12 kg K2O/fed in the two seasons. The inverse was true in juice purity (%) in the first season. The rate of 24kg K2O/fed was statistically at par with the rate of 48 kg K2O/fed in all the mentioned traits in both seasons. Potassium fertilizer rate had no significant effect on root/top ratio, concentration of Na and a-amino nitrogen (meq/100g) in both seasons and the percentage of juice purity (%) in the second season. Increasing sulphur rate from 0-250 kg S/fed significantly increased dry weight (g), LAI , root dimensions (length and diameter) (cm), root weight (g), top yield (ton/fed), root yield (ton/fed), gross sugar (%), white sugar (%), juice purity (%) and sugar yield (ton/fed) in both seasons. Application of sulphur fertilizer improved juice purity by decreasing impurities (K, Na and a-amino-N) in roots and, loss sugar (%) in the two seasons. Sugar beets received 250 kg S/fed produced the highest root and sugar yield (ton/fed). The interaction between potassium and sulphur rates had a significant effect on root and white sugar yields/fed. The maximum root and white sugar yields were achieved from beets received 24 or 48 kg K2O along with 250 kg S / fed in both seasons. It can be concluded that application of 24 kg K2O plus 250 kg S /fed was the recommended treatment for optimum root and extractable white sugar yield per unit area at Kafrelshiekh Governorate, Egypt.}, keywords = {Sugar beet, (Beta vulgaris L.),potassium,sulphur,rates,yield and quality}, url = {https://agro.journals.ekb.eg/article_94.html}, eprint = {https://agro.journals.ekb.eg/article_94_b9aec5eba6a20099f889ebdd26821488.pdf} } @article { author = {}, title = {Genetic Analysis of Some Cytoplasmic Male Sterile and Suggested Restorer Rice Lines}, journal = {Egyptian Journal of Agronomy}, volume = {35}, number = {1}, pages = {93-114}, year = {2013}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2013.95}, abstract = {F OUR CYTOPLASMIC Male Sterile rice (CMS) lines having diverse cytoplasmic source and ten suggested restorers beside their forty F1 rice hybrids were the materials of this study. The aim of this investigation was to study the genetic variance components, heritability and combining ability analysis in relation identifying desirable parents and hybrid for hybrid rice breeding program. The additive variance (σ2A) and the relative importance of GCA were higher for 1000-grain weight, number of panicles/ plant, number of spikelets/ panicle and heading date while the opposite was true in the rest characters. The CMS lines D297A and G46A and the restorers Wita12, Giza178 and Giza182 were the best combiners for grain yield. Yimi 15A was the best combiner for earliness. According the scale of Wang (1981) of arrangement the parent materials, G46A ranked first (compared with the other CMS lines) while wita 12 was the best combiner among all suggested restorers. Grain yield, fertility percentage and number of spikelet/ panicle recorded the highest estimates of genotypic coefficient of variability. Heritability estimates in narrow sense was relatively high for 1000-grain weight and heading date. Fertility percentage, grain yield and number of filled grain/ panicle recorded relatively higher values for the expected genetic advance from selection (Δg %). D297A x Wita 4, G46A x Giza 181 and G46A x Giza 182 rice hybrids were distinguished combiners for grain yield and most of its components, indicating that these hybrids and their parents beside Wita12 and Giza 178 may be involved in the hybrid rice breeding program for grain yield improvment.}, keywords = {}, url = {https://agro.journals.ekb.eg/article_95.html}, eprint = {https://agro.journals.ekb.eg/article_95_4699a90857b42d4e70d6e1f786da7ef3.pdf} }