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 Efficiency of Different Forms of Urea as Nitrogen Source in Rice Oryza Sativa Under Mid Hill Conditions of North Western Humid Himalayas written by Kumar Naresh and published by . This book was released on 1982 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen efficiency of irrigated rice under West African conditions written by Tala Gueye and published by Cuvillier Verlag. This book was released on 2002-01-01 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Increasing Nitrogen Use Efficiency in Rice Oryza Sativa L with Chlorophyll Meter and Leaf Color Chart written by M.Z Hussain and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low Nitrogen Use Efficiency (NUE) continues to be a problem in wetland rice situation as nitrogen (N) is subjected to several transformation losses in the rice ecosystem. Chlorophyll meter (SPAD) and Leaf Color Chart (LCC) can be potentially employed for the precise N measurement, which is based on the leaf N status to synchronize the timely N application with the crop demand. Two field experiments were conducted during 1998 and 1999 at Coimbatore, India with the rice (Oryza sativa L.) cultivars of ADT 36 (short duration) and ASD 19 (long duration) respectively for efficient N management based on the leaf N status of rice. The experiments consisted of four SPAD and LCC-N regimes, blanket N recommendation, green manure N regime and Controlled Release N (CRN) fertilizer regimes, which were compared with the zero-N regime. The technology involves the indirect measurement of leaf N status by the chlorophyll meter and LCC and N application only if the measured meter value is below the predetermined threshold value. The study reveals that N requirement with LCC was higher than SPAD for all the time intervals of measurements. In terms of NUE parameters, LCC was inferior to SPAD-N management, but the lesser cost of LCC, when compared to SPAD meter, provides an opportunity as a simple tool for the individual rice farmers to own it. The study also reveals that the application of controlled release N fertilizer as polymer coatings at the rate of 60% of blanket N recommendation would save 40% of fertilizer N.
Download or read book Nitrogen Availability for Rice Oryza Sativa L Under Flooded Conditions written by Kandasamy Amarasingham and published by . This book was released on 1990 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculty of Agriculture, Department of Soil Science. Supervisor : Prof. N. Ahmad.
Download or read book Water wise Rice Production written by B. A. M. Bouman and published by Int. Rice Res. Inst.. This book was released on 2002 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Use Efficiency in Rice written by Shuangjie Huang and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Food security is a major global issue because of the growing population and decreasing land area. Rice (Oryza sativa L.) is the most important staple cereal crop in the world. Application of nitrogen (N) fertilizer has improved crop yield in the world during the past five decades but with considerable negative impacts on the environment. New solutions are therefore urgently needed to simultaneously increase yields while maintaining or preferably decreasing applied N to maximize the nitrogen use efficiency (NUE) of crops. Plant NUE is inherently complex with each step (including N uptake, translocation, assimilation, and remobilization) governed by multiple interacting genetic and environmental factors. Based on the current knowledge, we propose some possible approaches enhancing NUE, by molecular manipulation selecting candidate genes and agricultural integrated management practices for NUE improvement. Developing an integrated research program combining approaches, mainly based on whole-plant physiology, quantitative genetics, forward and reverse genetics, and agronomy approaches to improve NUE, is a major objective in the future.
Download or read book Evaluation of Technology Aimed to Improve Nitrogen Use Efficiency for Delayed flood Rice Oryza Sativa L Production written by Jason Morris Satterfield and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving nitrogen (N) use efficiency is crucial for maximizing growth and yield in rice production. Tools to determine precise midseason N rates as well as knowledge of the effects of starter fertilizer N applications on rice growth and yield are lacking. Field experiments were conducted in 2007 and 2008 at the Delta Research and Extension Center to evaluate canopy reflectance as a means for determining yield and N nutrition at midseason and to assess agronomic effects and N recovery efficiency of starter fertilizer N. Measurable in-season parameters were significantly related to grain yield. Grain yield and measured parameters were related to canopy reflectance. The results of this study support the continued research of canopy reflectance for predicting N nutrition indicators and yield. Minimal growth responses were observed when starter N was applied to seedling rice. Nitrogen recovery increased significantly throughout the growing season; however, less than 20% recovery was obtained.
Download or read book Nutrient Use Efficiency from Basics to Advances written by Amitava Rakshit and published by Springer. This book was released on 2014-12-26 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses in detail multifaceted approaches to boosting nutrient use efficiency (NUE) that are modified by plant interactions with environmental variables and combine physiological, microbial, biotechnological and agronomic aspects. Conveying an in-depth understanding of the topic will spark the development of new cultivars and strains to induce NUE, coupled with best management practices that will immensely benefit agricultural systems, safeguarding their soil, water, and air quality. Written by recognized experts in the field, the book is intended to provide students, scientists and policymakers with essential insights into holistic approaches to NUE, as well as an overview of some successful case studies. In the present understanding of agriculture, NUE represents a question of process optimization in response to the increasing fragility of our natural resources base and threats to food grain security across the globe. Further improving nutrient use efficiency is a prerequisite to reducing production costs, expanding crop acreage into non-competitive marginal lands with low nutrient resources, and preventing environmental contamination. The nutrients most commonly limiting plant growth are N, P, K, S and micronutrients like Fe, Zn, B and Mo. NUE depends on the ability to efficiently take up the nutrient from the soil, but also on transport, storage, mobilization, usage within the plant and the environment. A number of approaches can help us to understand NUE as a whole. One involves adopting best crop management practices that take into account root-induced rhizosphere processes, which play a pivotal role in controlling nutrient dynamics in the soil-plant-atmosphere continuum. New technologies, from basic tools like leaf color charts to sophisticated sensor-based systems and laser land leveling, can reduce the dependency on laboratory assistance and manual labor. Another approach concerns the development of crop plants through genetic manipulations that allow them to take up and assimilate nutrients more efficiently, as well as identifying processes of plant responses to nutrient deficiency stress and exploring natural genetic variation. Though only recently introduced, the ability of microbial inoculants to induce NUE is gaining in importance, as the loss, immobilization, release and availability of nutrients are mediated by soil microbial processes.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1986 with total page 1920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles and Practices of Rice Production written by Surajit K. De Datta and published by Int. Rice Res. Inst.. This book was released on 1981 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rice Production in Uttar Pradesh written by M. D. Pathak and published by Int. Rice Res. Inst.. This book was released on 1991 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suggestions for improving rice production in Uttar Pradesh.
Download or read book Rice in Human Nutrition written by Bienvenido O. Juliano and published by Int. Rice Res. Inst.. This book was released on 1993 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: On title page & cover: International Rice Research Institute
Download or read book Management of Agroforestry Systems for Enhancing Resource Use Efficiency and Crop Productivity written by Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil and water management is the key to sustainable crop production and food security. This book contains contributions from participants of an IAEA coordinated research program on the use of nuclear techniques for developing integrated nutrient and water management practices for agroforestry systems.
Download or read book Integrated Soil Fertility Management in Africa written by Nteranya Sanginga and published by CIAT. This book was released on 2009 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forward. A call for integrated soil fertility management in Africa. Introduction. ISFM and the African farmer. Part I. The principles of ISFM: ISFM as a strategic goal, Fertilizer management within ISFM, Agro-minerals in ISFM, Organic resource management, ISFM, soil biota and soil health. Part II. ISFM practices: ISFM products and fields practices, ISFM practice in drylands, ISFM practice in savannas and woodlands, ISFM practice in the humid forest zone, Conservation Agriculture. Part III. The process of implementing ISFM: soil fertility diagnosis, soil fertility management advice, Dissemination of ISFM technologies, Designing an ISFM adoption project, ISFM at farm and landscape scales. Part IV. The social dimensions of ISFM: The role of ISFM in gender empowerment, ISFM and household nutrition, Capacity building in ISFM, ISFM in the policy arena, Marketing support for ISFM, Advancing ISFM in Africa. Appendices: Mineral nutrient contents of some common organic resources.
Download or read book Growth and Mineral Nutrition of Field Crops written by Nand Kumar Fageria and published by CRC Press. This book was released on 2010-10-19 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: By the year 2050, the world's population is expected to reach nine billion. To feed and sustain this projected population, world food production must increase by at least 50 percent on much of the same land that we farm today. To meet this staggering challenge, scientists must develop the technology required to achieve an "evergreen" revolution-one
