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The quality of irrigation water is very important to maintain soil fertility and tilth, and for using more soil depth by the plants. [26] When soil is irrigated with high alkaline water, unwanted sodium salts build up in the soil which would make soil draining capacity very poor.
Soil temperature regulates seed germination, [70] breaking of seed dormancy, [71] [72] plant and root growth [73] and the availability of nutrients. [74] Soil temperature has important seasonal, monthly and daily variations, fluctuations in soil temperature being much lower with increasing soil depth. [75]
Redoximorphic features (RMFs) consist of color patterns in a soil that are caused by loss (depletion) or gain (concentration) of pigment compared to the matrix color, formed by oxidation/reduction of iron and/or manganese coupled with their removal, translocation, or accrual; or a soil matrix color controlled by the presence of iron (2+) [1] The composition and responsible formation processes ...
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[citation needed] The impacts of drainage and agricultural production cause the loss of organic matter in muck soils through erosion, oxidation, and other processes collectively called "subsidence." Agricultural practices such as cover cropping and reduced tillage can significantly reduce subsidence but can not reverse it.
All vegetables apart from nitrogen fixing legumes are prone to this disorder. Nitrogen deficiency can be prevented by using grass mowings as a mulch or foliar feeding with manure . Sowing green manure crops such as grazing rye to cover soil over the winter will help to prevent nitrogen leaching, while leguminous green manures such as winter ...
Blanching is a technique used in vegetable growing. Young shoots of a plant are covered to exclude light to prevent photosynthesis and the production of chlorophyll , and thus remain pale in color. Different methods used include covering with soil ( hilling or earthing up) or with solid materials such as board or terracotta pots, or growing the ...
The ideal soil is deep, loose and well-drained, sandy or loamy, with a pH of 6.3 to 6.8. [37] Fertilizer should be applied according to soil type because the crop requires low levels of nitrogen, moderate phosphate and high potash. Rich or rocky soils should be avoided, as these will cause the roots to become hairy and/or misshapen. [38]
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