Vol. 7, Issue 3 (2019)
Effect of integrated nutrient management on nitrogen, phosphorus & potassium uptake and productivity of groundnut (Arachis hypogaea L.) under rainfed and protective irrigated condition
Author(s): G Narayana Swamy, AV Nagavani, Y Reddi Ramu, KC Nataraj and Malleswari Sadhineni
Abstract: The experiment was carried out during kharif seasons of 2014 and 2015 to study the effect of integrated nutrient management on nitrogen, phosphorus & potassium uptake and productivity of groundnut (Arachis hypogaea L.) under rainfed and protective irrigated condition. Supply of 100 per cent of nitrogen through sheep penning (T9) recorded significantly highest pod and haulm yield of groundnut, which was however comparable with 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM (T3) and recommended dose of fertilizer (T2) under rainfed situation, but under protective irrigation, which was inturn comparable with supply of 50 per cent nitrogen through urea + 50 per cent nitrogen through leaf compost (T5). Control (T1) recorded the lowest pod and haulm yield in groundnut in both the situations during two consecutive years of investigation. At all the stages of the crop growth the highest nitrogen uptake of groundnut was registered with supply of 100 per cent nitrogen through sheep penning (T9), which was in parity with recommended dose of fertilizers (T2) under rainfed condition, which was inturn comparable with 50 per cent nitrogen through urea + 50 per cent nitrogen either through leaf compost or FYM (T3 or T5) at all the stages of crop growth except at 30 DAS, where it was on par with recommended dose of fertilizers (T2) under protective irrigation and maximum phosphorus uptake of groundnut was recorded with supply of 100 per cent nitrogen through sheep penning (T9) under rainfed condition, which was significantly superior over rest of the treatments tried. Whereas under protective irrigation, it was comparable with application of either inorganic fertilizers (T2) or substitution of 50 per cent nitrogen through FYM or leaf compost (T3 or T5) at latter stages of crop growth i.e., at 90 DAS and at harvest. The highest potassium uptake in groundnut was recorded with supply of 100 per cent nitrogen through sheep penning (T9). Whereas, the lowest N, P and K was associated with control (T1).
Pages: 4270-4274 | 337 Views 104 Downloads
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How to cite this article:
G Narayana Swamy, AV Nagavani, Y Reddi Ramu, KC Nataraj, Malleswari Sadhineni. Effect of integrated nutrient management on nitrogen, phosphorus & potassium uptake and productivity of groundnut (Arachis hypogaea L.) under rainfed and protective irrigated condition. Int J Chem Stud 2019;7(3):4270-4274.
