Download or read book Urea Nitrogen in the Fertilization of Rice Oryza Sativa L written by Mohamed Seedi Foh and published by . This book was released on 1976 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development and Composition of Rice oryza Sativa L as Affected by Nitrogen and Phosphorus Fertilization written by Tee Boon Goh and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertilizer Strategies written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1999 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid response of the agricultural sector to increased crop prices indicates that it is able to meet the world's overall food requirements. The problem lies more in the distribution of the agricultural output and the economic inability of a segment of the population to satisfy basic requirements. This document presents guidelines for governments on the development of fertiliser strategies. It illustrates the difference before and after the involvement of the private sector and offers solutions for improvement. The role of fertilisers in the development of agriculture is discussed with practical suggestions for decision-makers regarding production and import. The many issues involved in the efficient distribution and marketing of fertilisers are presented, together with an institutional framework for the integration of all the aspects into a comprehensive policy. There is a useful glossary.
Download or read book Nitrate Agriculture and the Environment written by Tom M. Addiscott and published by CABI. This book was released on 2005 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will be of significant value to students of soil, crop, environmental and pollution sciences."--BOOK JACKET.
Download or read book The Use of Nutrients in Crop Plants written by Nand Kumar Fageria and published by CRC Press. This book was released on 2016-04-19 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Put Theory into Practice Scarcity of natural resources, higher costs, higher demand, and concerns about environmental pollution- under these circumstances, improving food supply worldwide with adequate quantity and quality is fundamental. Based on the author's more than forty years of experience, The Use of Nutrients in Crop Plants
Download or read book Efficiency of Different Forms of Urea as Nitrogen Source in Rice Oryza Sativa L Under Mid Hill Conditions of North Western Humid Himalayas written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.
Download or read book Efficacy of Urea and Urea Super Gramules at Different Levels of Nitrogen and at Different Times of Applications in Wetland Rice oryza Sativa L written by Satyanarayana P. and published by . This book was released on 1986 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Different Rates of Nitrogen Fertilization on Growth and Yield of Two Varieties of Rice Oryza Sativa L written by Bazilah Jalil and published by . This book was released on 2010 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Fertilizer Trends and Outlook to 2018 written by and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the world nitrogen, phosphate and potassium fertilizer medium-term supply and demand projections for the period 2014-2018. The FAO/Fertilizer Organizations Working Group met in Nairobi, Kenya, in June 2014 to review the prospects for fertilizer demand and supply, and prepared the forecasts. The African Fertilizer and Agribusiness Partnership (AFAP) and the Fertilizer Association of Southern Africa (FERTASA) provided special regional contributions and presentations.
Download or read book Nitrogen Management in Crop Production written by Nand Kumar Fageria and published by CRC Press. This book was released on 2014-06-25 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main approaches for safeguarding food security, sustainable development has increased demand for knowledge on fertilizer management in crop production. Among essential plant nutrients, nitrogen is one of the most important yield-limiting nutrients, mainly responsible for determining yield and yield components in cereals and legumes. It i
Download or read book The Effect of Preflood Nitrogen and Flood Establishment Timing on Rice Development Nitrogen Uptake and Grain Yield written by Tyler Lawrence Richmond and published by . This book was released on 2017 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urea-N fertilizer is typically applied at the 5-leaf stage to rice (Oryza sativa L.) grown in a dry-seeded, delayed-flood production system. How long the preflood-N can be delayed without adverse effects on yield potential is poorly understood. The research objective was to determine the effects of preflood-N application and flood establishment timing on aboveground-N content, 50% heading, yield components, and grain yield. Trials were established on silt loam soils at the Pine Tree Research Station (PTRS) and Rice Research and Extension Center (RREC) during 2015 and 2016. Urea-N was applied at 0, 45, 90, 135, and 180 kg N ha-1 on five to seven different dates with applications beginning near the 3-leaf stage and ranging from 127-1035 growing degree units (GDU). The current optimal time to apply preflood-N is defined as 195-310 GDU. Aboveground-N content at each site-year, 50% heading for each cultivar and relative grain yield and yield components at each location were regressed across cumulative GDU at the time of N application allowing for linear and quadratic terms with coefficients depending on N rate. Aboveground-N content increased as fertilization and flooding were delayed. Spikelets panicle-1, % filled spikelets, and effective tillers were affected by the fertilization delay at all locations. At the PTRS relative grain yield declined when fertilization and flooding occurred beyond 531 GDU suggesting that this is the point when the yield components could no longer compensate for one another. The delay in fertilization and flooding delayed 50% heading for all cultivars. Results from this study indicated that rice grain yield is affected when fertilization and flooding is delayed beyond 531 GDU, which is approximately 13 to 20 d beyond the current recommended time to apply preflood-N and 6 d beyond the current final recommended time to apply preflood-N average for the cultivars assessed in this study.
Download or read book Mineral Nutrition of Rice written by N.K. Fageria and published by CRC Press. This book was released on 2013-08-22 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third most important cereal crop after wheat and corn, rice is a staple food for more than half of the world’s population. This includes regions of high population density and rapid growth, indicating that rice will continue to be a major food crop in the next century. Mineral Nutrition of Rice brings together a wealth of information on the ecophysiology and nutrient requirements of rice. Compiling the latest scientific research, the book explains how to manage essential nutrients to maximize rice yield. The book examines 15 essential or beneficial nutrients used in irrigated, upland, and floating rice across a range of geographic regions. For each mineral, the text details the cycle in the soil–plant system as well as the mineral’s functions, deficiency symptoms, uptake in plants, harvest index, and use efficiency. It then outlines management practices, covering application methods and timing, adequate rates, the use of efficient genotypes, and more. The author, an internationally recognized expert in mineral nutrition for crop plants, also proposes recommendations for the judicious use of fertilizers to reduce the cost of crop production and the risk of environmental pollution. Color photographs help readers identify nutrient deficiency symptoms and take the necessary corrective measures. Packed with useful tables and illustrations, this comprehensive reference guides readers who want to know how to increase rice yield, reduce production costs, and avoid environmental pollution from fertilizers. It offers practical information for those working in agricultural research fields, in laboratories, and in classrooms around the world.
Download or read book Nitrogen in Agriculture written by Khan Amanullah and published by BoD – Books on Demand. This book was released on 2018-02-01 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is the most yield-restraining nutrient in crop production globally. Efficient nitrogen management is one of the most important factor for improving nitrogen use efficiency, field crops productivity and profitability. Efficient use of nitrogen for crop production is therefore very important for increasing grain yield, maximizing economic return and minimizing nitrous oxide (N2O) emission from the fields and nitrate (NO3) leaching to ground water. Integrated nitrogen management is a good strategy to improve plant growth, increase yield and yield components, grain quality and reduce environmental problems. Integrated nitrogen management (combined use of chemical + organic + bio-fertilizers) in field crop production is more resilient to climate change.
Download or read book Breaking the Yield Barrier written by Kenneth G. Cassman and published by Int. Rice Res. Inst.. This book was released on 1994 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I: Raising the rice yield ceiling; Part II: Extended abstracts of invited papers.
Download or read book Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity written by S. Kiss and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of our present work is to review the fundamental studies on inhibition of soil urease activity and the applied studies on improving efficiency of urea fertilizers by inhibition of soil urease activity. The general literature on these topics covers 65 years, and the patent literature comprises a period of nearly 40 years. Studies related to inhibition of soil urease activity were performed in a great number of countries' well representing all the continents. Full texts of the papers describing these studies were published in one of 18 languages·'. The literature data reviewed are structured into 10 chapters, 81 subchapters, and 224 sections. The bibliographical list consists of 830 papers cited. ·In alphabetical order: Argentina, Armenia, Australia, Austria, Belgium, Belorussia, Brazil. Bulgaria, Canada, China, Costa Rica, Cuba. Czech RepUblic, Egypt, Estonia, France, Georgia (Gruzia), Germany, Hungary, India, Iraq, Ireland, Israel, Italy. Japan, Kazakhstan, Lithuania, Malaysia, Moldova, Netherlands, New Zealand, Pakistan, Philippines, Poland, Romania, Russia, Saudi Arabia, Slovakia, South Africa, South Korea, Spain, Sri Lanka. Sudan, Sweden, Thailand, Turkey, Ukraine, United Kingdom, United States of America. Uzbekistan .
Download or read book Alternative Post Emergence Nitrogen Management Strategies for Delayed flood Rice Production written by Richard Edward Turner and published by . This book was released on 2017 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice (Oryza sativa L.) that is grown in the U.S. is predominantly grown in the mid-south. Current Mississippi State University recommendations for nitrogen (N) fertilization of rice suggest a single application of 168 kg N ha−1 on soils with CEC ≤ 20 and 202 kg N ha−1 on soils with CEC > 20. The primary objective was to identify alternative N management strategies that may potentially be used to reduce costs associated with aerial application of N fertilizer to rice. Research was established at the Delta Research and Extension Center, at Stoneville, MS, on two soil textures during 2015 and 2016. The combination of application timings and N sources resulted in a total of eight N management strategies. Data from all siteyears were pooled together for analysis to evaluate differences among N management strategy. Urea + [N-(nbutyl)thiophosphoric triamide] (NBPT) applied in a single application 7 days before flood (DBF), two-way split application, and PCU-2 LF produced statistically similar and greatest mean rice grain yield. These data suggests that N fertilizer can be applied early (2 to 3 leaf growth stage) from a ground based fertilizer spreader prior to the levee construction. Single optimum and two-way split N management strategies produced more total dry matter (TDM) at heading (HDG) and more N uptake at HDG. Urea + NBPT applied in a single application 7 DBF should be the N management strategy of choice in mid-southern U.S. rice production.
