STUDIES ON INTEGRATED NUTRIENT MANAGEMENT IN PADDY-GROUNDNUT CROPPING SEQUENCE FOR COASTAL ZONE OF KARNATAKA, INDIA

R. NAGARAJ¹, R. JAYAPRAKASH²*, M. SHANKAR³, M. HANUMANTHAPPA⁴, N. SATHEESHA⁵, S. HULKOTI^6
1Technical Officer, GKMS Project, Zonal Agricultural & Horticultural Research Station, Hiriyur, 577598, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 577412, Karnataka, India
²Scientist (SS&AC), Krishi Vigyan Kendra, Brahmavar, 576213, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 577412, Karnataka, India
³Scientist (Agriculture Engineering), Zonal Agricultural & Horticultural Research Station, Brahmavar, 576213, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 577412, Karnataka, India
⁴The Vice Chancellor, University of Agricultural Sciences, Raichur, 584104, Karnataka, India
⁵Scientist Food and Nutrition, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 577412, Karnataka, India
⁶Scientist Fishery Sciences, Zonal Agricultural & Horticultural Research Station, Brahmavar, 576213, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 577412, Karnataka, India
* Corresponding Author : jjayaprakashr@gmail.com

Received : 09-06-2023     Accepted : 28-07-2023     Published : 30-07-2023
Volume : 15     Issue : 7       Pages : 12504 - 12508
Int J Agr Sci 15.7 (2023):12504-12508

Keywords : Yield, Paddy, Groundnut, Vermicompost, Poultry manure, POP
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Zonal Agricultural & Horticultural Research Station, Hiriyur, 577598; Krishi Vigyan Kendra, Brahmavar, 576213; Zonal Agricultural & Horticultural Research Station, Brahmavar, 576213; Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, 577412, Karnataka, India and Vice Chancellor, University of Agricultural Sciences, Raichur, 584104, Karnataka, India
Author Contribution : All authors equally contributed

Significantly higher grain and straw yield of rice (5159 & 6679 kg ha-1, respectively) were recorded in POP + 50 per cent RDN through vermicompost and it was followed in POP + 50 per cent RDN through poultry manure (5101 & 6562 kg ha-1, respectively) applied treatments. Similarly, higher yield parameters were observed in above mentioned treatments. Significantly higher groundnut pod yield was recorded in POP + 50 per cent RDN through poultry manure (1344 kg ha-1) followed by POP + 50 per cent RDN through vermicompost (1282kg ha-1), POP + 50 per cent RDN through goat manure (1237kg ha-1) and POP + 50 per cent RDN through gliricidia (1137 kg ha-1) than package of practice (765 kg ha-1). In paddy-groundnut cropping sequence after harvest of groundnut, maximum available nitrogen (329.09kg ha-1) was noticed in POP + 25 per cent RDN through vermicompost followed byPOP + 50 per cent RDN through eupatorium (323.92kg ha-1) and POP + 25 per cent RDN through eupatorium (322.72kg ha-1). Available P2O5 was more (70.38kg ha-1) with POP + 50 per cent RDN through poultry manure followed by POP + 25 per cent RDN through poultry manure (69.30kg ha-1) and POP + 50 per cent RDN through goat manure (68.64kg ha-1). Residual effect of recommended dose of nutrients + 50 per cent RDN through eupatorium resulted in higher available K2O (115.64kg ha-1) as compared to other treatments and it was followed by POP + 25 per cent RDN through eupatorium (110.64kg ha-1) and poultry manure i.e., T5 (104.50kg ha-1)

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