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International Journal of Applied Agricultural & Horticultural Sciences
  • 28 April, 2024
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Frequency : Bimonthly
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. 7 (4) : July-August 2016 issue
Green Farming Vol. 7 (4) : 859-863 ; July-August, 2016
Nutrient budgeting in continuous rice-rice cropping system under long-term integrated nutrient management
S. SRIDEVI1* and M. VENKATA RAMANA2
AICRP on Integrated Farming Systems, College of Agriculture, Professor Jaya Shankar Telangana State Agricultural University, Rajendranagar, Hyderabad - 500 030 (Telangana)
Designation :  
1Sr. Scientist *(sridevikarlapudi@gmail.com), 2Principal Scientist & Head
Subject : Agronomy and Crop Production
Paper No. : P-4336
Total Pages : 5
Received : 06 October 2015
Revised accepted : 26 May 2016
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Citation :

S. SRIDEVI and M. VENKATA RAMANA. 2016. Nutrient budgeting in continuous rice-rice cropping system under long-term integrated nutrient management. Green Farming Vol. 7 (4) : 859-863 ; July-August, 2016

ABSTRACT
Nutrient budgeting is an useful tool to understand the present and future productivity in relation to land management as well as undesirable effects of nutrient mining and development of toxicities. Long-term experiment conducted on permanent plots for 25 years with rice–rice cropping system at PJTSAU, Rajendranagar indicated that inclusion of manures at both 50% and 25% N substitution during kharif substantially reduced net negative balance when compared to application of chemical fertilizers alone. Nutrient removal over 25 years of experimentation was high in the treatments where in 100% recommend dose of fertilizers were applied through chemical fertilizers and also in treatments where 25% or 50% of N is substituted for with gliricidia green leaf manure. Of the total applied nitrogen through different sources, about 24 to 37.5% nitrogen was recovered by the rice crop in various treatments, gaseous losses were accounted to 12-13% and about 26 to 39.9% of nitrogen was subjected to leaching losses. The positive P balance was ranging from 6.6 to 824 kg ha-1 over 25 years in different treatments. Nitrogen substitution through paddy straw maintained lower negative balance of potassium over FYM, glyricidia substituted treatments or with application of 100% RDF.
Key words :
INM, Nutrient removal, Nutrient balance, Rice-rice system.