Effect Of Foliar Nutrition In Ameliorating Drought Tolerance And Yield In Groundnut

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B. RAJITHA*, P. LATHA, V. UMAMAHESH, V. CHANDRIKA AND K. SUJATHA

Department of Crop Physiology, S.V. Agricultural College, ANGRAU, Tirupati-517 502, A.P.

ABSTRACT

A field experiment was conducted at Dryland Farm of S.V. Agricultural College, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Tirupati during rabi season, 2014-15. The study aimed to enhance drought tolerance and yield through foliar nutrition in groundnut crop under moisture stress conditions. IIn the present study, twelve treatments were imposed which include ten foliar nutrient sprays and one irrigated and one moisture stress control. The results revealed that, ssignificant variations for morphological, physiological and yield parameters were observed. Among the foliar spray treatments NPK- 19:19:19 @ 0.5%, KNO3 @ 0.5% and KCl @ 1% at 60 DAS were recorded high chlorophyll content, high SPAD Chlorophyll Meter Reading (SCMR) values, moderate specific leaf area (SLA), moderate chlorophyll stability index (CSI), and low relative injury (RI) under moisture stress conditions. Foliar spray treatments NPK- 19:19:19 @ 0.5% recorded significantly highest pod yield (2335 kg ha-1) followed by KNO3 @ 0.5% (2190 kg ha-1) and KCl @ 1% (2154 kg ha-1).

KEYWORDS:

Groundnut, Moisture stress, Nutrients, Foliar application

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