Download or read book The Effects of Nitrogen Fertilizer and Two Drilling Methods on the Development Yield and Grain Quality of Wheat Triticum Aestivum L Thell written by and published by . This book was released on 1990 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1990 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1990 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agrindex written by and published by . This book was released on 1995 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Nitrogen Fertilizer Sprays on Wheat Yield and Grain Quality written by Melville Graham Mason and published by . This book was released on 1987 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Nitrogen on Yield and Grain Quality of Wheat Triticum Aestivum L Grown on a Red brown Earth Soil written by Joseph Adjei Adjetey and published by . This book was released on 1991 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Nitrogen Fertilization Level on the Quality of Wheat Triticum Aestivum L Seed written by Louhichi Brinis and published by . This book was released on 1982 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.

Download or read book Influence of Environment Nitrogen Fertilizer and Cultivar on Dry Matter Accumulation Grain Yield and Grain Quality of Three Cultivars of Hard Red Winter Wheat Triticum Aestivum L written by Margaret K. Kilibwa and published by . This book was released on 1988 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Effects of Nitrogen Fertilization on Triticum Aestivum L Em Thell written by Atiquallah Aiar and published by . This book was released on 1973 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Nitrogen and Water Stresses During Tillering and Grain Filling in Wheat written by Muhammad Ashraf and published by . This book was released on 1992 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CERES-Wheat Crop Growth and Development model treats temperature, nitrogen and water stresses as limiting factors. For each day the model calculates a stress index for temperature, N and water, compares the magnitude of the indices, and then adjusts the calculated daily potential growth using the index of the most severe stress, while ignoring the other stresses. Under the conditions in Oregon, however, mild N and water stress will often be present together in about equal degree of stress. Some published results suggest that both stresses affect growth and yield under those conditions. Therefore, this work was undertaken to evaluate the combined effects of N and water stress on growth and development of wheat (Triticum aestivum L.). To make such an evaluation one must be able to control both N and water supplies to the plant and the response of the plant to these two variables must be measured at different growth stages. A system of imposing controlled plant water stress developed by Snow and Tingey (1985) was adapted and evaluated for its potential to impose controlled levels of both N and water stress to single wheat plants. Using a 12 mmol N and 4 cm pathlength as optimum N and water supply treatment, 2 mmol N and 12 cm pathlength and a 1 bar standard ceramic disc in the floral foam column as N and water stress treatments during tillering resulted in 15 % reduction in tillers/plant for limits to the N supply alone, a 39 % reduction for limits to the water supply alone, and a 52 % reduction when both stresses were imposed simultaneously. There was no effect of N or water supply treatments on the leaf appearance rate on the main stem, a measure of the rate of progress toward flowering. Both N and water supplies had a strong effect on tillers/plant which, in turn, affected plant biomass and its constituent parts. The effects were independent, suggesting that, to accurately model the wheat canopy development when both mild N and water stresses are present, both stresses must be considered. A 'law of minimum' concept as currently used in the CERES-Wheat model would not be an accurate model for the process of tillering. In an experiment where stress was imposed during flowering and grain-filling, the grain yield/plant varied significantly with both N and water supplies. The interaction between N and water treatments on grain yield was also significant and was due primarily to their significant interaction on mean kernel weight. The major determinant of grain yield was tillers/plant at harvest. Both N and water supplies affected kernels/ear and N stress caused a reduction of 12% in both fertile spikelets/ear and kernels/fertile spikelet. At an optimum water supply, the difference between the effect of optimum and medium N supply on grain yield was not significant but yield in low N supply was reduced by 54%. In the medium water supply, the grain yield at both medium and low N treatments were significantly lower than at optimum N supply. There was no significant difference in yield between N supply treatments in the low water supply treatments. Thus, under severe water stress, a 'law of minimum' concept appeared to be valid, but under less severe stress both N and water supply affected grain yield. The data on leaf water potential and leaf temperature showed that plants in low water supply treatments maintained consistently lower leaf water potential and higher leaf temperature than in optimum water supply treatment.

Download or read book Influence of Foliar Sulfur Chloride and Nitrogen on Winter Wheat Grain Yield and Total Nitrogen Triticum Aestivum L written by Sulochana Dhital and published by . This book was released on 2013 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimum use of nitrogen (N) is a key component in improving wheat grain yield and quality. The combined effect of other nutrients with N can have a positive impact on crop production. Using sulfur (S) and chloride (Cl) in wheat and other cereals has received increased attention in recent years. Foliar S and Cl can assist in optimizing wheat yield and total N, especially in sandy soils with low organic matter where deficiencies are expected. Winter wheat studies were conducted for 3 site-years at Lake Carl Blackwell (LCB) and Lahoma (LAH) in the fall of 2011 and 2012 to evaluate the effect of flag leaf applied foliar N, S and Cl on winter wheat grain yield and grain N. Two N rates, 10 and 20 kg N ha−1, as urea triazone (N-SURE, 28-0-0) and urea ammonium nitrate (UAN, 28-0-0) were foliar applied. Treatments included foliar application of gypsum (6 kg S ha−1) and calcium chloride at a rate of 10 kg Cl ha−1 applied with the help of CO2 backpack sprayer. Results showed total grain N increased with increasing preplant N rate at LCB and LAH. With increasing preplant N, a linear increase in yield was observed at LAH and a quadratic increase in yield at LCB. There was no response to foliar N, Cl and S at both locations. This study indicated that S and Cl fertilization did not increase yield and protein.

Download or read book Influence of Phosphorous and Lime Application on Root Growth and Grain Yield of Two Winter Wheat Cultivars Triticum Aestivum L Em Thell written by Mary Caroline Boulger and published by . This book was released on 1980 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Differential grain yield response of two winter wheat cultivars ('Yamhill' and'McDermid) when grown on acid soils prompted this investigation. Root samples were taken at two soil depths at late tillering and anthesis from plots established on an acid nonpareil soil in Douglas County, Oregon. The soil pH was 5.2-5.3 and this was increased to 6.5 on the limed plots. Lime and/or phosphorous were applied in a split-split plot design. Grain yields were also obtained from each plot. A root sampling method was evaluated using soil cores. After separating the roots from the soil, they were stored in 95% ethanol until stained with Feulgens. Nuclei of live roots were differentiated by the stain. The live roots were counted and the Newman formula was used to determine root length. Yamhill had significantly greater root length than McDermid at the late tillering stage of plant development. Though cultivar differences for root length across all treatments were not statistically significant at anthesis. Yamhill tended to have more root length than McDermid, especially when phosphorous was not applied. Phosphorous was the most significant factor affecting root length both in the 0-20cm depth and in the 20-40cm depth samples. McDermid root length responded to phosphorous to a greater degree than Yamhill. In the deeper soil samples (20-40cm) lime did not contribute to increased root length. In the upper soil layer (0-20cm) it did significantly affect root length. Though neither lime nor phosphorous was incorporated into the 20-40cm depth, the phosphorous affected root length below its area of application by causing an overall increase in plant growth. Grain yield responded to lime and phosphorous application in the same manner as root length. In 1978 the correlation between grain yield and root length was r = .750 at the tillering stage and r = .880 at anthesis. The second year a value of r = .750 was obtained between root length and grain yield at the tillering stage of plant development. The root sampling technique was effective in distinguishing cultivar differences at the 0-20cm depth in the early stages of plant development. Deeper in the soil not enough roots were obtained to get an accurate assessment of cultivar root development. This technique was also an accurate method of determining root length response to lime and phosphorous applications.

Download or read book Effect of Planting Date and Nitrogenous Fertilization on Wheat written by Essam Esmail Esmail Kandil and published by LAP Lambert Academic Publishing. This book was released on 2012-06 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield response of three wheat (Triticum aestivum L.) cultivars (Gemmieza 7, Sakha 93 and Giza 168) to various sowing times was studied during the two 2006/2007 and 2007/2008 seasons. Three sowing dates were 5th November, 20th November, and 5th December. A split-split plot design was used. Wheat plants were sown on 20th November gave the highest values of the most of characteristics such as plant height, leaf area index, crop growth rate, spike length, number of spikes m-2, 1000- kernel weight, grain yield (Mg ha-1), harvest index and protein grains content in both seasons. Increasing N- fertilization rates up to 288 kg N ha-1 led to increased growth parameters, yield and yield components. 288 kg N ha-1 recorded the highest values of the most parameters in both seasons. Gemmieza 7 had highest values for most of growth characters, yield and its components compared with the other cultivars (Sakha 93and Giza 168). Sowing on 20 Nov. with 288 kg N ha-1 had significantly increased on most studied characteristics. There was no fungal diseases infection as affected by different sowing dates and nitrogen fertilization level of the three wheat cultivars during two sowing seasons.

Download or read book Molybdenum Nitrogen and Phosphorus Fertilization of Wheat Triticum Aestivum L Em Thell in Arkansas written by Mohammad Reza Majedi and published by . This book was released on 1985 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Nitrogen Fertilizer and FYM Combinations on the Nitrate Teductase Activity in Relation to the Yield and Quality of Wheat written by R. B. Nazirkar and published by . This book was released on 1998 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Nitrogen Fertilization of Wheat Triticum Spp on Chemical and Biochemical Composition and Performance of Seeds written by Adriel Edgardo Garay and published by . This book was released on 1975 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: High protein wheat seeds frequently perform better than low protein seeds of the same variety. Protein content of seeds can be increased by management practices, the most important of which is rate and timing of N applications. The purpose of this study was to determine the chemical, biochemical and physiological changes that occur in seeds as a result of nitrogen fertilization, and to relate these changes to seed performance. Seeds of Yamhill, Paha and Hyslop soft white winter wheat were produced with N applications of 0 to 450 kg/ha. Applications were made at planting, flower initiation, and anthesis. Supplemental irrigation was supplied. Applications of 150 and 300 kg N /ha increased the grain yield and protein yield per hectare, seed size, and percent and amount of protein per seed of Yamhill wheat. N applications caused several biochemical changes in the food reserve of the seeds. These included increases in the amounts of gluten, each amino acid studied and free amino acids. The amount of soluble sugars decreased slightly and starch remained constant with high rates of N.N also caused several biochemical changes in embryos. These included increases in: free amino acids and soluble sugars; protein concentrations and amount per embryo; ADP, ATP and energy charge. Regardless of protein concentration, the quantities of solubles and adenylate phosphates were higher in larger embryos. Biochemical changes in seedlings associated with N applications and higher protein content included: more sugars and free amino acids; higher amounts of ATP, ADP and total AP; and faster rate and higher net translocation of food reserves. Small seeds contained a higher concentration of ash, some mineral elements, soluble sugars and free amino acids. The total amount of these compounds per seed, however, was related to protein content and seed size. The large seeds with high protein concentration produced seedlings with the highest ADP, ATP and total AP content, energy charge and growth potential. Smaller seeds absorbed water and germinated faster than larger seeds. Seedlings from small seeds produced longer roots and shoots during the early stages of growth, but their growth rate was slower at later stages. High protein seeds of Hyslop, Paha and Yamhill outyielded low protein seeds by 12 to 17%. Yield differences were obtained when N was added to the crop, but not in the absence of added N. These and other studies indicate the potential for improving wheat seed and quality by applying specialized management practices for seed production rather than managing for grain production.