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International Journal of Applied Agricultural & Horticultural Sciences
  • 29 April, 2024
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Language : English
DOI Prefix : 10.37322
P-ISSN : 0974-0775
E-ISSN : 2582-4198
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  • 1. Papers are invited for the forthcoming issues of Green Farming. Few Mini Review articles on applied aspects of new approaches (with Sr. Authors) may be adjusted, if sent on priority by email. For more details, please contact us.
Vol. 8 (1) : January-February 2017 issue
Green Farming Vol. 8 (1) : 132-136 ; January-February, 2017
Yield and nutrient uptake of rainfed sunflower as influenced by humic acid under nutrient management practices in Alfisols
SAI KUMAR T.a1*, BHANU REKHA K.a2, SUDHAKARA BABU S.N.b3 and MADHAVI A.a4
aDeptt. of Agronomy, College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar,
bIndian Institute of Oilseeds Research, Rajendranagar, Hyderabad - 500 030 (Telangana)
Designation :  
1P.G. Student *(thotasaikumar63@gmail.com), 2Asstt. Professor, 3Principal Scientist, 4Sr. Scientist
Subject : Agronomy and Crop Production
Paper No. : P-4967
Total Pages : 5
Received : 25 March 2016
Revised accepted : 15 December 2016
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Citation :

SAI KUMAR T., BHANU REKHA K., SUDHAKARA BABU S.N. and MADHAVI A. 2017. Yield and nutrient uptake of rainfed sunflower as influenced by humic acid under nutrient management practices in Alfisols. Green Farming Vol. 8 (1) : 132-136  ;  January-February, 2017

ABSTRACT
A field experiment on rainfed sunflower was conducted during kharif 2014 at College farm, College of Agriculture, Rajendranagar, Hyderabad to study the effect of humic acid under nutrient management practices on dry matter accumulation, yield attributes, yield and nutrient uptake of rainfed sunflower. The experiment was laid out in Split plot design with eighteen treatments (six main and three sub-treatments and replicated thrice). The six main treatments consisted of (M1) - Absolute control, M2 - compost @ 2.5 t ha-1, M3 - compost @ 5.0 t ha-1, M4 - RDF alone (60-60-30 kg N, P2O5 and K2O), M5 - RDF + compost @ 2.5 t ha-1 and M6 - RDF + compost @ 5.0 t ha-1 and the three sub-plot treatments consisted of application of varying levels of humic acid granules (basal) viz., S1 - 5.0 kg ha-1, S2 - 10.0 kg ha-1 and S3 - 15.0 kg ha-1. The results revealed that among all the nutrient management practices maximum dry matter accumulation, seed, oil yield (1859 and 741 kg ha-1) and nutrient uptake (N, P and K) at all the crop growth stages were recorded with the combined application of RDF (60-60-30 N, P2O5 and K2O kg ha-1) + compost @ 5 t ha-1 and the lowest growth parameters, yield attributes and yield were observed under absolute control. The effect of varying levels of humic acid was found to be significant only on dry matter accumulation at harvest and nitogen uptake at 60 DAS. The interaction effect was found to be non-significant.
Key words :
Compost, Dry matter accumulation, Humic acid, Sunflower, Yield and nutrient uptake.