@article { author = {Elhag, Dalia}, title = {Effect of Irrigations Number on Yield and Yield Components of Some Bread Wheat Cultivars in North Nile Delta of Egypt}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {137-148}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.680.1059}, abstract = {A FIELD experiments were conducted in the two successive seasons 2013/2014 and 2014/2015 at the experimental farm of Faculty of Agriculture, Kafrelsheikh University-Egypt, to investigate the effect of number irrigation on growth, yield and yield components of some wheat cultivars (Triticum aestivum, L.). A strip-plot design with three replications was used. Four irrigation treatments were; Ir1= given one irrigation after sowing at tillering stage, Ir2= Ir1+ one irrigation at elongation stage, Ir3= Ir2 + one irrigation at booting stage, and Ir4= Ir3 + one irrigation after flowering stage. Ir1, Ir2, Ir3 and Ir4 were assigned in the horizontal plots, while, the three wheat cultivars; Sids 12, Misr 1 and Sakha 93 were randomly distributed in vertical plots. Results indicated that the effect of irrigations significantly affected number of days to heading and maturity, plant height, number of spikes/m2, 1000-grain weight, number of grains/spike, grain yield, straw yield and harvest index(%). There were highly significant differences among irrigation treatments for all studies traits. Four irrigation produced the highest values of number of days to heading and maturity, plant height, number of spikes/m2, 1000-grain weight, number of grains/spike, grain yield, straw yield and harvest index (%). There were highly significant differences among wheat cultivars for all character under study. Misr 1 recorded the highest values for number of days to heading and maturity, plant height, number of grains/spike, grain and straw yield. Sids 12 recorded the highest values for 1000-grain weight and harvest index. Sids 12 recorded the highest values for number of fertile tillers/m2, and 1000-grain weight with normal or control irrigation treatment (Ir 4). Misr 1 produced the highest grain yield, straw yield, number of grains/spike comparing with the other cultivars Sakha 93 and Sids 12. Decreasing number of irrigations from four to three decreased grain yield of the cultivars Sids 12, Misr 1 and Sakha 93 by 6%, 10% and 11%, respectively. Sid 12 cultivar may be used successfully for improving production of wheat in North Delta area under shortage of irrigation water.}, keywords = {wheat genotype,growth stages,Water treatment,Grain yield and yield component}, url = {https://agro.journals.ekb.eg/article_3622.html}, eprint = {https://agro.journals.ekb.eg/article_3622_40b281ed6428a52424b32e2f58a8f8bf.pdf} } @article { author = {Ahmed, Ahmed}, title = {Response of Three Sugar Cane Varieties to Phosphorus Bio Fertilization}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {149-158}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.484.1049}, abstract = {NOWADAYS, there is a call for the reduction of the environmental pollution resulted from over application of chemical fertilizers. Therefore, research has been done to investigate the possibility and efficiency of using bio fertilizers. This work was carried out at El-Mattana Agricultural Research Station (latitude of 25.17o N and longitude 32.33o E), Luxor Governorate, Upper Egypt during 2011-2012 season (plant cane crop) and 2012-2013 season (first ratoon crop) to study the effect of different levels of P- bio fertilizer (200, 400 and 600 g P- bio fertilizers /fad) on yield, yield components and quality of three sugarcane varieties (G.T.54-9, G.98-28 and G.99-103). P- bio fertilizer comprises an effective dissolvers strain of phosphate Bacillus megatherium var. Egyptiacum. Randomized complete block design with four replications arranged in split- plots system was used.The results indicated that the examined sugarcane varieties differed significantly. Promising varieties G.99-103 recorded the highest values of number of millable cane /m2, millable cane height, diameter and cane yield, while G.T. 54-9 surpassed in respect to Brix, sucrose , sugar recovery percentages and sugar yield in plant cane and its ratoon crops. Increasing P-bio fertilizer levels up to 600 g/fad significantly increased in number of millable cane /m2, millable cane height, diameter, Brix % sucrose%, sugar recovery%, cane and sugar yields in plant cane and its ratoon crops.It could be concluded that under the conditions of the present work, it is recommended to inoculate G.99-103 or G.T 54-9 sugarcane varieties cuttings by 600 g P-bio fertilizer/fad to produce the highest cane , sugar yield, as well as decrease the environmental pollution.}, keywords = {P-bio fertilizer,Sugar cane,bio fertilizers}, url = {https://agro.journals.ekb.eg/article_3709.html}, eprint = {https://agro.journals.ekb.eg/article_3709_beb3dfd734dcf7b190235461e03d6b14.pdf} } @article { author = {Abou seeda, Mohamed and Hellal, Farid and El Sayed, Saied and Abou El-Nour, El-Zanaty}, title = {Boron’s Importance in Plant Development and Growth: A review}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {159-166}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.499.1051}, abstract = {IT’S AN IMPORTANT micronutrient for plant nutrition, the availability of boron is important for growth parameters. The physiological role in plants controlled by boron and its affinity to environment, generally accommodated to excelling appreciating the assignment of boron in plants. Interdict of hydrogen ion deliver due to boron draw up and amends in plant substrate demonstrated boron association in cell wall actions it’s a unique micronutrient depends for common plant growth and optimum yield of crops. Its concentration in soil and plant not only varies with soil, plant, but also its overdose or defect, may affect the plant growth and production. Boron in soils gradually influence by several factors among of its, soil pH, organic matter, nutrient interactions, and plant species. Deficiencies of boron cause a reduction of yield production and quality. However, the toxicity was gradually observed in the presence of Ca application. Function of boron in plant observed in cell division, seed development and sugar transport in plant. Plant needs trace amount of boron for plant growth as compared with primary nutrients. The aim of this review is to understand the physiological duty of boron element in plants.}, keywords = {Boron toxicity,Deficiency and translocation in plant tissues,Plant physiology}, url = {https://agro.journals.ekb.eg/article_3710.html}, eprint = {https://agro.journals.ekb.eg/article_3710_a9ffde9e3ceda2b5cb57146424ac5372.pdf} } @article { author = {Youssif Elmantawy, Rania}, title = {Physiological Role of Antioxidants in Improving Growth and Productivity of Sunflower under Different Sources of Nitrogen Fertilizers}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {167-177}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.761.1060}, abstract = {A TWO FIELD trials were conducted at Sakha Agricultural Research Station 31° 07\\ N and 30° 57\\, Kafr El-Sheikh, Egypt to determine the effect of foliar application of some antioxidants and different sources of nitrogen fertilizers on growth, yield and its components of sunflower (Helianthus annuus L.) cultivar Sakha 53 during the two successive summer seasons 2014 and 2015. A split plot design with four replications was used in the present work. The main plots were randomly assigned to three different sources of nitrogen (urea, ammonium nitrate and ammonium sulfate).Sub plots were randomly devoted to antioxidants treatments i.e. spray with water as control , spray with 150 and 300 mg L-1 of ascorbic acid and spray with 250 and 500 mg L-1 of citric acid. The results revealed that, different nitrogen sources significantly affected growth, yield, yield components and yield quality of sunflower plants during the two seasons. Remarkable results noticed at nitrogen sources ammonium sulfate followed by ammonium nitrate and urea. Also, applications of the antioxidants (ascorbic acid and citric acid) were very effective in improving growth characters namely plant height, stem diameter, head diameter ,leaf area plant-1,seed yield kg fad-1, seed oil %,seed protein % and plant pigments in relative to the control treatment.}, keywords = {nitrogen sources,antioxidants,Growth,productivity,Sunflower}, url = {https://agro.journals.ekb.eg/article_3620.html}, eprint = {https://agro.journals.ekb.eg/article_3620_7737698ded39d10b7a4d09fc215fa150.pdf} } @article { author = {Abou-Zied, Khaled}, title = {Impact of Tillage Intensity, NPK Fertilization and Weed Control on Seed Yield and Yield Components of Flaxin Newly ReclaimedLands}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {179-194}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.1022.1063}, abstract = {S AKHA 4 flax (Linum usitatissmum L.) cultivar was grown in 2013/14 and 2014/15 winter seasons to study the effect of two tillage systems (conventional tillage (CT) vs no-tillage (NT)), macronutrients fertilization (NPK, NP and P) and weed control treatments, i.e. Brominal + Select super, Sinal + Select super, hand weeding twice and unweeded check on weeds and flax productivity at Nubaria Research Station, Agricultural Research Center. The experimental design was split split-plot with 4 replications.Total weeds fresh weight was lower significantly in NT than CT by 17.0 and 18.4%, in the two seasons, respectively. Application of NPK gave higher total weeds fresh weight than NP or P by 6.3 and 20.6% and 8.4 and 20.0%, in the two seasons, respectively, while NP superior P by 15.2 and 12.7%, in the two seasons, respectively. Brominal + Select super was more effective in reducing total weeds fresh weight (98.1 and 97.1%) than Sinal + Select super (92.6 and 92.4%) and hand weeding (93 and 90.7%) compared to unweeded check during the two seasons regardless of the tillage system.No-tillage gave comparable seed yield (1363.7 and 1464.2 kg/ha) to conventional tillage (1562.0 and 1530.1 kg/ha) in the two seasons, respectively. NPK fertilization gave higher values for plant height, number of capsules per plant, 1000-seed weight and straw yield. NPK and NP fertilization increased the seed yield by 57.1 and 51.4% and 69.1 and 50.7%, in the two seasons, respectively, compared to P fertilization treatments.All weed control treatments gave significantly higher values for seed yield and yield components compared to unweeded check, with Brominal + Select super giving a slight increase in the values of those characters compared to Sinal + Select super. Percent increase in seed yield, over control was 71, 69 and 68.5% and 68, 67.5 and 68.4%, for the two seasons, respectively.Correlation analysis revealed negative effect of weeds on flax growth and productivity.The present study indicated that no-tillage was equivalent to conventional tillage concerning productivity of seed and straw from dual purpose flax (for oil and fiber), and the necessity of a balanced fertilization program with macronutrients, in association with post-emergence herbicides application to realize high yields.}, keywords = {tillage,NPK fertilization,Weed control and flax}, url = {https://agro.journals.ekb.eg/article_3621.html}, eprint = {https://agro.journals.ekb.eg/article_3621_133423e25c0cd0c6d7a5683f6812ae31.pdf} } @article { author = {Abd El-hady, Mohamed and Fergany, Mohamed Abdelhamid and El-temsah, Mohamed}, title = {Influnce of Integration between Mineral Nitrogen and Humic Acid Fertilizers on Producivity and Nitrogen Partitioning Dynamic in Maize Plants}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {195-202}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.1168.1064}, abstract = {Two field experiments were carried out in Agric. Expt. Farm, Fac. of Agric., Ain Shams Univ. at Shalakan, Kalubia Governorate, Egypt during 2014 and 2015 growing seasons. These experiments aimed to study the effect of integrated between mineral nitrogen fertilizer (60, 90 and 120 kg / fad) and Humic acid (0, 15 and 20 kg / fad) on productivity and nitrogen partitioning dynamic of maize (zea maize) plants: Plants treated with120 kg MN/fad + 20 kg HA and 120 kg MN/fad + 15 kg HA gave the highest values of ear weight (264.9 and 257.4 g), shelling percentage(85.37 and 84.67 % ),plant height (284.2 and 279.7 cm), 100 kernel weight (40.20 and 39.09 g),stover yield (9.33 and 9.13 ton/fad) and biological yield (13.10 and 12.66 ton/fad) respectively. Maximum grain yield (3.76 ton/fad) was obtained when plants were fertilized with 120 kg MN. + 20 kg HA. Meanwhile, the lowest value (1.98 ton/fad) was recorded when plants were fertilized with 60 kg MN. Results also showed that grain nitrogen (%), stover nitrogen %, biological nitrogen %, grain nitrogen yield (kg/fad), stover nitrogen yield (kg/fad), total nitrogen yield (kg/fad), GCP % and GCPY (kg/fad) were significantly the highest due to fertilization with 120 kg MN/fad + 20 kg HA/fad. Such potent treatment increased the previous traits by 1.723%, 0.413%, 2.14%, 64.94 (kg/fad), 38.58 (kg/fad), 103 (kg/fad), 9.82 % and 370.2 (kg/fad), respectively. Data also cleared that the effect of integration between mineral nitrogen fertilizer and humic acid were significantly differed in NUE, NRE%, NPF and NHI%.}, keywords = {Maize,humic,Grain yield,Ear characteristics,Nitrogen physiological parameters}, url = {https://agro.journals.ekb.eg/article_3711.html}, eprint = {https://agro.journals.ekb.eg/article_3711_eb42df7856f71198ae20365cbafd0684.pdf} } @article { author = {Aboukhadrah, S. H. and El - Alsayed, Abdul Wahed Abdul Hameed and Sobhy, Labib and Abdelmasieh, William}, title = {Response of Onion Yield and Quality To Different Planting Date, Methods and Density}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {203-219}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.1203.1065}, abstract = {TWO FIELD experiments were carried out at the Experimental Farm of Sakha Agricultural Research Station, Egypt, during the two winter seasons of 201415/ and 201516/. The experiments were conducted to find out the suitable transplanting date(15th December, 1st January and 15th January), the best planting method (ridges and wide furrows) and to assess three plant densities i.e.,30, 45 and 60 plants/m2 for vegetative growth, yield and quality of onion under North Delta conditions. The main results showed that, the vegetative growth behavior was improved, also yield and its components and quality of onion were increased by transplanting onions on 15th Dec. date in both seasons. Wide furrows planting method resulted in a significant increase in the most of vegetative growth characteristics, as well as total bulb yield and its components and bulb quality. Increasing plant density up to 45 plants/m2 significantly increased most vegetative growth characteristics, total and marketable bulbs yield/fad and bulb qualityin 2014 /15 and 2015 /16 seasons.Transplanting onions on 15ᵗʰ Dec. in wide furrows planting system significantly recorded the tallest plants, leaf area/plant, total bulbs yield, marketable bulbs yield and average bulb weight.Onion cultivar transplanted at 15ᵗʰ Dec. with 30 plants/ m2 resulted in a markedly increase in plant height, plant fresh and dry weight and leaf area/plant at the three sampling dates in both seasons. While, total and marketable bulbs yield/fad, was increased by transplanted at 15ᵗʰ Dec.with 45 plants/ m2.The highest vegetative growth, total bulbs yield and bulb quality resulted from onions when were planted with 45 plants/m2 in wide furrows planting method.The economic evaluation showed that the highestgross and net return per fad and net benefit-cost ratio obtained from transplanting onions at 15th Dec.(early date), wide furrows planting method with planting 45plants/ m2. So, this study recommended onion farmers at North Delta of Egypt to transplanting onions at 15th Dec. (early date) in wide furrows planting method with the plant density of 45 plants/m2 to achieve the highest economic yield.}, keywords = {Onion, Allium cepa L,Transplanting date,planting method,density}, url = {https://agro.journals.ekb.eg/article_3712.html}, eprint = {https://agro.journals.ekb.eg/article_3712_8030f703737562c817e3899b4fc36edf.pdf} } @article { author = {Morsy, Ahmed Salah and Elwan, Aly and Eissa, Nadia}, title = {Studies on Intercropping Soybean with Sugar cane under Different Nitrogen Levels}, journal = {Egyptian Journal of Agronomy}, volume = {39}, number = {2}, pages = {221-237}, year = {2017}, publisher = {National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology}, issn = {0379-3575}, eissn = {2357-0288}, doi = {10.21608/agro.2017.848.1061}, abstract = {T WO experiments were conducted at Mallawy Agric. Res. Station, Minia Governorate, Egypt during 2014/2015 and 2015/2016 seasons to study the effect of intercropping soybean with sugar cane under different levels of N fertilizer. A split plot design with four replicates was used for both experiments. Main plots were devoted for N levels i.e.195, 210 and 225kg fad-1 of nitrogen. The intercropping patterns of soybean as 100 % sugarcane+30% soybean in one row, 100% sugarcane + 30% soybean in two rows, 100% sugarcane + 40 % soybean in one row, 100 % sugarcane + 40 % soybean in two rows, pure stand of sugar cane and soybean were distributed in sub-plots.Nitrogen levels had significant effect on most studied characters of soybean. Increasing N levels up to 225kg fad-1 increased all studied traits of yield and yield components of soybean. The highest values of yield and yield components were produced from pure stand compared to intercropping patterns. On the other hand, intercropping pattern of 100% sugar cane+40% soybean in one row gave the highest seed yield. Increasing N level up to 225 kg fad-1 caused significant differences on yield and its components of sugar cane as well as quality parameters and sugar yield fad-1.The highest sugar yield fad-1 was gained from 225kgf ad-1of nitrogen.Intercropping patterns of soybean on sugar cane had a significant effect on studied characters of sugar cane. 100% sugar cane+40% soybean in one row (2 plants hill-1) gave the highest values. In general, pure stand of sugar cane gave the highest values of juice quality and sugar yield fad-1.The value of Land Equivalent Ratio (LER) is greater than one, which indicates the increasing land productivity per unit area. The highest value of LER (1.56) was obtained by intercropping 40 % soybean in one row (2 plants hill-1) on 100% sugar cane with 225kg fad-1. Aggressivity (Agg) values of sugar cane were positive dominant, while those of soybean were negative dominated intercropping 40 % soybean on 100% sugar cane with 225 kg N fad-1. The actual yield loss (AYL) values for sugar cane and soybean were positive at all patterns intercropping. The highest values of total income and profit obtained from 100 % sugar cane + 40 % soybean in one row (2 plants hill-1) with 225kg fad-1 of nitrogen.}, keywords = {Intercropping,N levels,Sugar cane,Soybean}, url = {https://agro.journals.ekb.eg/article_3713.html}, eprint = {https://agro.journals.ekb.eg/article_3713_431451adaf02d878f1160806c3b0d27f.pdf} }