ทรัพยากร ระบุป้าย: Soil
74 รายการที่พบ (กำลังแสดง 1 - 10) ถัดไป
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01-01-1984 The purpose of soil preparation is to develop a planting medium that will foster the best possible growth of agricultural crops while preventing the deterioration of the land through erosion, destruction of soil structure, or nutrient loss. The soil preparation system used must be economical,...
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01-01-1991 The result of a symposium held at the Annual Meeting of the Soil Science Society of America, in Las Vegas, October 1989. The objective of the symposium was to establish a forum for creative purposes in developing guidelines and procedures for quantitative description of map unit composition. 270...
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Soil Microbiology is a user-friendly introduction to the incredible world of soil microbiology. The microscopic life in soil influences virtually everything in our lives from the water we drink, the food we eat, to the air we breathe. Understanding something about the life in soil, appreciating...
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01-11-1988 91 pages, illustrated. Part 1: Soil dwellers; Part 2: Order Oxyurida, Family Thelastomatidae, Parasites of cockroaches and bess beetles
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This volume contains the papers presented at the Seminar on Soil Management and the Development Process in Tropical America. The papers present the experimental results and the points of view of 63 authors. The individual opinions of these authors were highly respected even accepting the risk of...
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Why is organic matter important? What causes biological degradation? How can I assess my soil biology and how can I improve it? This training is the 4th in a series discussing soil science. This series of lectures and practical demonstrations gives a broad overview and introduction to some basic...
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Introduction to Tropical Soil Science covers the requirements of soil science courses taken by all diploma and degree level students in general agricultureand it provides a solid foundation for those going on to specialize in soil science. The theoretical physical, chemical and biological bases...
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As the crucible of life, the source and final resting place of everything that grows, soil inspires reverence not only in the peasant who derives his daily bread from it, but also in the scientist who contemplates its meaning as the place where life and death meet and exchange vital energies.Out...
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Although it's not too easy, good garden soil has to be achieved and then maintained by a continuous program of good growing practices. The first step in this program is to find out the specific needs of your soil through soil testing. This booklet starts at the beginning and explains how to have...
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This booklet tells why organic matter in the soil may be considered our most important national resource. The author describes how it furnishes fuel for bacterial wrecking crews and how it is turned into plant nutrients. He shows that many of our farm practices have enormously reduced the supply...