Impact on soil properties and yield of rainfed groundnut mono cropping system (Arachis hypogae L.) under long term application of manure and fertilizers

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Groundnut is the mostly grown commercial oilseed for millions of small scale farmers in the semi-arid topics and under rainfed conditions in Andhra Pradesh. The productivity of groundnut grown under rainfed situation is declining from the actual production of 1.23 m t to the lowest yield of 0.8t ha-1 in India, under the crop area coverage of 1.38 m ha. The reasons behind the low productivity in India is mainly due to poor soil fertility, deterioration of soil physical properties, monocropping, low rainfall and frequent occurrence of dry spells, imbalanced use of plant nutrients and sub-optimal addition of organic and inorganic fertilizers to soil.

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