Vol. 6 (5) : September-October 2015 issue
Green Farming Vol. 6 (5) : 1051-1055 ; September-October, 2015
Growth and yield of rabigroundnut as influenced by irrigation scheduling and phosphogypsum levels
R. NARESHAa1*, P. LAXMINARAYANAa2, K.B. SUNEETHA DEVIa3, V. SAILAJAb4 and J. NARENDERa5
aDepartment of Agronomy, bDepartment of Soil Science & Agril.Chemistry, College of Agriculture, Acharya N.G. Ranga Agricultural University, Rajendranagar, Hyderabad - 500 030 (Andhra Pradesh)
Designation : 1P.G. Student *(rasalanaresha@gmail.com), 2,3Professor, 4Assoc. Professor, 5P.G. Student
Subject : Agronomy and Crop Production
Paper No. : P-2778
Total Pages : 5
Received : 25 October 2014
Revised accepted : 31 August 2015
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Citation :
R. NARESHA, P. LAXMINARAYANA, K.B. SUNEETHA DEVI, V. SAILAJA and J. NARENDER. 2015. Growth and yield of rabi groundnut as influenced by irrigation scheduling and phosphogypsum levels. Green Farming Vol. 6 (5) : 1051-1055 ; September-October, 2015
ABSTRACT
The field experiment was conducted at College farm, Acharya N.G. Ranga Agricultural University, Hyderabad during rabi 2013-14 to study the influence of three moisture regimes viz., 0.6, 0.8 and 1.0 IW/CPE ratios and five phosphogypsum levels viz., Control (500 kg ha-1 gypsum at flower initiation), phosphogypsum @ 250 kg ha-1 at flower initiation, phosphogypsum @ 250 kg ha-1 (½ as basal and ½ at flower initiation), phosphogypsum @ 500 kg ha-1 (½ as basal and ½ at flower initiation) and phosphogypsum @ 500 kg ha-1 at flower initiation and was replicated thrice. Among moisture regimes, growth parameters at 30 DAS were not influenced by moisture regimes due to continuous rain up to 30 days, but significantly maximum growth parameters, yield attributes and yield of rabi groundnut were recorded with scheduling of irrigation at1.0 IW/CPE ratio at 60, 90 DAS and at harvest. Among phosphogypsum levels, highest growth parameters, yield attributes and yield were obtained with phosphogypsum @ 500 kg ha-1 at flower initiation while haulm yield was on par with gypsum application @ 500 kg ha-1 at flower initiation. The interaction effect between moisture regimes and phosphogypsum levels showed that significantly highest pod yield (23.03 q ha-1) obtained at interaction level of 1.0 IW/CPE ratio and phosphogypsum @ 500 kg ha-1 at flower initiation.
Key words :
Groundnut, Growth & yield parameters, Irrigation scheduling, IW/CPE ratio, Phosphogypsum levels.
