Question

give a reason why red soil needs irrigation?

Answer 1

Deficit in lime, nitrogen and phosphoric acid. Thus it needs irrigation..
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Answer 2

Red soil is a type of soil that develops in a warm, temperate, moist climate under deciduous or mixed forest, having thin organic and organic-mineral layers overlying a yellowish-brown leached layer resting on an illuvial red layer. Red soils are generally derived from crystalline rock. They are usually poor growing soils, low in nutrients and humus and difficult to cultivate because of its low water holding capacity.