ធនធាន ដាក់ស្លាក: Plant Nutrition
27 items found (Showing 1 - 10) Next
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01 មករា 2012 Strong gradients of decreasing soil fertility are found in many regions of the world. Millions of smallholders are now facing this serious crisis which causes them lower crop yields, and many of these families also suffer from food insecurity. With the aim of promoting recovering soil fertility...
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ធនធានសំខាន់ 15 មិនា 1994 This volume is the revised English translation of the German title, "Bodenfruchtbarkeit und Standortgerechte Landwirtschaft". It presents a range of practices conducive to sustainable agricultures, and is of particular importance for the development of smallholdings in the tropics. These include...
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15 មិថុនា 1993 Amazon.com Description This book discusses the role of essential nutrients in relation to nearly two dozen crops. Use the book's 307 color photographs to diagnose disorders in the field. The accompanying text explains symptoms in detail, with information provided by 31 crop experts. Covers the...
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ធនធានសំខាន់ 01 មករា 2001 Food security in West Africa is challenged by complex issues, including rapid population growth, exploitation of nonrenewable resources, and chronic low soil fertility, but in this text experts from world agricultural institutions share their work to provide solutions. Topics covered include soil...
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ធនធានសំខាន់ 01 មករា 1975 In 1975, Let it Rot! helped start the composting movement and taught gardeners everywhere how to recycle waste to create soil-nourishing compost. Contains advice for starting and maintaining a composting system, building bins, and using compost. Third Edition. Stop bagging leaves, grass, and...
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15 តុលា 2016 Diagnosing Crop Nutrient Deficiencies in the Field A Primer of Coffee Harvesting and Processing Book Review: Perennial Vegetable Gardening
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This article is from ECHO Asia Note #29 ធសចកីតធផតើម ពាកយចាសដពាលថា “អនកមិនអាចដោោះសរាយបញហា បនដទទបសិនដបើអនកមិនដឹងថាអនកមានបញហា ដ ោះ” ភសុតតាងវិទាាសរសតមូលោា នននការដធើវដោគវិនិចឆយដលើកងវោះាធាតុចិញច ឹមដលើរុកខជាតិ។ អសរយៈដពលជាដទចើនឆន ាំមកដ ើយ កសិករ និងអនកវិទាាសរសតបនដធើវការជាមួយគនន ដដើមបីកាំណតពីភសុតតាងននចកុខវ...
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20 កក្កដា 2010 Alkalinity of Urine. Urine in storage can reach a pH of 9.0. HIV/AIDS. A person reading a draft of the urine article asked whether HIV/AIDS would be a concern with the use of urine as a fertilizer. Controlling the Odor of Urine. Dr. Arnat Tancho recommends mixing a small amount of microbial...
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This video is Session 3 part 3 of our ongoing training on "Introduction to Soil Science." This training gives a broad overview and introduction to some basic soil characteristics: phases (solid, liquid, gas), texture, density, structure, reaction (pH), plant-water relationships, organic matter,...
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20 កក្កដា 2010 One high quality and universally available source of all the major macronutrients (nitrogen, phosphorus and potassium) is human urine. Using human urine as fertilizer is not unprecedented, but for various reasons in most countries it is not commonly considered as an option, especially for growing...