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Soil Texture and Methods of Analysis
Soil texture is the basic property of a soil related to the size of individual mineral particles, which cannot be easily altered. It specifically refers to the relative size of soil particles. The rate and extent of many important physical and chemical reactions in soils are governed by texture because it determines the amount of surface on which the reaction can occur. Different size groups of soil particles, termed as soil separates were arbitrarily chosen by International Society of Soil Science (ISSS) as clay, fine sand, coarse sand, and gravel. The United States Department of Agriculture (USDA) has further subdivided the sand fraction. The two systems of textural classification
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which is the probable principal source of nitrates and phosphate a. the water cycle b. nitrogen fixation c. bacterial decay d. change in environmental temperature e. changes in lig
Nematodes These are next to protozoa and are the abundant soil microfauna in soil. They are also called eelworms, thread worms or roundworms. Nematodes that feed on decayin
Blood - Abnormal Constituent of Urine In acute inflammation and trauma, blood may be present in the urine. This condition is known as haematuria. Blood may be present in cancer
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A weather house Changes in the amount of water vapour are in the atmosphere can be indicated by variation in tension in a few strands of human hair or by using the hygroscopic
Which class of microflora would you expect to be most active under following conditions. i ) In rice paddies requiring nitrogen - blue-green algae ii) In acid soils - so
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Let us recall briefly what all we have learnt about fire hazards in this unit. Fire accident can happen due .to a number of reasons, like, flammable liquids, faulty electrical and
Explain the Chronic Glomerulonephritis The repeated occurrence of acute glomerulonephritis, persisting proteinuria, hypertension and chronic renal failure may damage more and m
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