Download or read book Efficiency of Nitrogen Uptake by Wheat as a Function of Fertilizers Form Time and Methods of Application and Supplemental Irrigation written by A. T. Shammas and published by . This book was released on 1973 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficiency of Nitrogen Uptake by Wheat as a Function of Fertilizers Form Time and Method of Application and Supplemental Irrigation written by A. T. Shammas and published by . This book was released on 1973 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliographies and Literature of Agriculture written by and published by . This book was released on 1985 with total page 450 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 1976 with total page 1732 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 1985 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Indian Nitrogen Assessment written by Yash P. Abrol and published by Elsevier. This book was released on 2017-08-14 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indian Nitrogen Assessment: Sources of Reactive Nitrogen, Environmental and Climate Effects, and Management Options and Policies provides a reference for anyone interested in Reactive N, from researchers and students, to environmental managers. Although the main processes that affect the N cycle are well known, this book is focused on the causes and effects of disruption in the N cycle, specifically in India. The book helps readers gain a precise understanding of the scale of nitrogen use, misuse, and release through various agricultural, industrial, vehicular, and other activities, also including discussions on its contribution to the pollution of water and air. Drawing upon the collective work of the Indian Nitrogen Group, this reference book helps solve the challenges associated with providing reliable estimates of nitrogen transfers within different ecosystems, also presenting the next steps that should be taken in the development of balanced, cost-effective, and feasible strategies to reduce the amount of reactive nitrogen. - Identifies all significant sources of reactive nitrogen flows and their contribution to the nitrogen-cycle on a national, regional, and global level - Covers nitrogen management across sectors, including the environment, food security, energy, and health - Provides a single reference on reactive nitrogen in India to help in a number of activities, including the evaluation, analysis, synthesis, documentation, and communications on reactive nitrogen
Download or read book Nitrogen Uptake by Wheat as Affected by Soil Type Time and Rate of Fertilizer Application written by Allan Wayne Cattanach and published by . This book was released on 1981 with total page 252 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 1994 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Nitrogen Fertilization at Anthesis on Nitrogen Uptake Nitrogen Uptake Efficiency and Grain Protein Concentration of Irrigated Wheat in California written by Bruce Alan Linquist and published by . This book was released on 1991 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Available to Winter Wheat as Influenced by Previous Crop in a Moist Xeric Environment written by Maqsood Hassan Qureshi and published by . This book was released on 1999 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotating wheat with other crops is a common practice in the Willamette Valley of western Oregon. Depending upon previous crop and soil type, current N fertilizer recommendations for wheat in the Willamette Valley vary widely. Excessive fertilizer poses environmental risk, whereas lower N inputs than required by the crop represent economic losses to growers. Growers and their advisors face the challenge to minimize the environmental risk, and at the same time to maintain or increase economic returns. Questions are often raised concerning the efficient use of N fertilizer and accurately predicting the amount of N needed by wheat following different crops. The first study measured growth, N uptake and N use efficiency (NUE) of winter wheat grown after either a legume or oat for three years. In all three growing seasons, winter wheat showed higher biomass, N uptake and NUE when grown after a legume than after oat. The contribution of legume was evident before the wheat was fertilized in spring, indicating that legume N had mineralized in fall or winter. Contribution of soil N to wheat suggested that fertilizer N can be reduced by 44 kg N ha−1 if a legume is grown previously. Nitrogen use efficiency estimated 50 to 70 days after N application by isotopic method (24 to 94%) was comparable with that estimated simply by difference (21 to 94%) at the same time. The second study predicted gross mineralization rates using analytical models. Comparable N mineralization was predicted by a model assuming remineralization and a model assuming no remineralization, suggesting that remineralization was negligible. In the spring, mineralization-immobilization turnover was at a lower pace than expected in both rotations. In two growing seasons, gross mineralization rates were higher where the previous crop was legume (0.37 to 0.74 kg−1 ha−1 day−1) as compared to where oat was grown previously (0.14 to 0.6 kg−1 ha−1 day). Negative net mineralization indicated that fertilizer N was immobilized in the oat-wheat rotation. The third study evaluated calibration and digestion techniques used to determine elemental concentration in grasses. Use of a dry ashed standard to calibrate the ICP spectrometer generated highly variable calibration curves and was not a viable calibration method. Good agreement was found between chemical and microwave digested standards. Dry ashing resulted in considerable S and Mn losses, whereas, perchloric acid digestion and microwave digestion showed similar results. Our study suggests that if routine analysis are to be performed for macro nutrients or involve trace level work, the best method is microwave digestion with chemical standard calibration of ICP spectrometer.
Download or read book Handbook of Plant and Crop Physiology written by Mohammad Pessarakli and published by CRC Press. This book was released on 2001-09-18 with total page 997 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from over 70 international experts, this reference provides comprehensive coverage of plant physiological stages and processes under both normal and stressful conditions. It emphasizes environmental factors, climatic changes, developmental stages, and growth regulators as well as linking plant and crop physiology to the production of food, feed, and medicinal compounds. Offering over 300 useful tables, equations, drawings, photographs, and micrographs, the book covers cellular and molecular aspects of plant and crop physiology, plant and crop physiological responses to heavy metal concentration and agrichemicals, computer modeling in plant physiology, and more.
Download or read book Nitrogen Uptake and Fertilizer Use Efficiency by Spring Wheat Grown in Tilled and No tilled Soil written by Bobette C. Parsons and published by . This book was released on 1984 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimizing nitrogen fertilizer application to irrigated wheat written by and published by . This book was released on 2000 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Use Efficiency of Wheat written by Abolfazl Nasseri and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supplemental irrigation is necessary for obtaining potential yield of wheat in rainfed areas. Irrigation and rainfall water use efficiencies are important in such areas, which are calculated as grain yield divided by rainfall and/or supplemental irrigation water. Therefore, water use efficiency of wheat under supplemental irrigation and rainfed conditions were investigated for the north of Iran in this book. Soil and water researchers, engineers and students can use findings of this study.
Download or read book Modeling Wheat Production from Nitrogen Fertilization written by Abolfazl Nasseri and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The north of Iran is one of the main regions for agricultural production but the occurred precipitation is insufficient to meet wheat requirement. Consequently, supplemental irrigation is necessary for obtaining potential yield of wheat in rainfed areas. In addition, nitrogen fertilization can improve water use efficiency in such areas. Therefore, supplemental irrigation and nitrogen fertilization effects on production of winter wheat under rainfed climate condition were investigated in this book. Soil and water researchers, engineers and students can use findings of this study.
Download or read book Nitrogen Fertilization Timing Effect on Wheat Production and Nitrogen Uptake Efficiency written by Maria Mercedes Alcoz Sartori and published by . This book was released on 1992 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertilizer Use Efficiency and Nitrogen Dynamics in Rainfed and Irrigated Wheat Under a Mediterranean type Climate written by Sonia Garabet and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
