Green Farming
Bi-monthly Journal
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UGC Approved Jr.No. : 45500
ISSN 0974-0775
International Journal of Applied Agricultural & Horticultural Sciences
  • 18 January, 2018
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Vol. 8 (6) : November-December 2017 issue
Green Farming Vol. 8 (6) : 1265-1269 ; November-December, 2017
Effect of integrated nutrient and weed management on growth, yield & economics of transplanted rice in rice-rice cropping system
M. KANDESHWARIa1* and C. JAYANTHIb2
aDepartment of Agronomy, bDirectorate of Crop Management, Tamil Nadu Agricultural University, Coimbatore - 641 003 (Tamil Nadu)
Designation :  
1Ph.D. Scholar *(aasir.lotus@gmail.com), 2Director
Subject : Agronomy and Crop Production
Paper No. : P-4439
Total Pages : 5
Received : 31 October 2015
Revised accepted : 11 October 2017
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Citation :

M. KANDESHWARI and C. JAYANTHI. 2017. Effect of integrated nutrient and weed management on growth, yield & economics of transplanted rice in rice-rice cropping system. Green FarmingĀ  Vol. 8 (6) : 1265-1269 ; November-December, 2017

ABSTRACT
A field experiment was conducted during kharif and rabi 2012, at the Wetland Farm of Tamil Nadu Agricultural University, Coimbatore to study the effect of weed management integrated with two different sources of nitrogen on weed control and yield of transplanted rice-rice cropping system. The experiments were laid out in Randomized Block Design with four replications. There were seven treatments with four replication using the rice varieties ADT 43 and CO (R) 50 during kharif and rabi respectively. Observations on growth, yield and nutrient uptake was recorded at 30, 60 DAT and at harvest. The results revealed that application of PE butachlor 0.75 kg/ha + 2,4-DEE 0.4 kg/ha along with 75% inorganic nitrogen +25% organic nitrogen (K)/ pretilachlor 0.75 kg/ha + 2,4-DEE 0.4 kg/ha along with 100% inorganic nitrogen (R) (W3N2) recorded significantly better growth characters viz., plant height and DMP and yield parameters like no. of panicles/m2, total no. of grains/panicle and filled grains percentage. Higher grain and straw yields of rice were obtained with application of butachlor + 2,4-DEE along with 75% I.N + 25% O.N (K) / pretilachlor + 2,4-DEE with 100% I.N (R) (W3N2) and it was comparable with butachlor + 2,4-DEE (both K & R) along with 75% I.N + 25% O.N (K) and 100% I.N (R) (W2N2) during both the seasons. The highest gross and net returns were obtained with application of butachlor + 2,4-DEE along with 75% I.N + 25% O.N (K) / pretilachlor + 2,4-DEE with 100% I.N (R) (W3N2) during both seasons. With regards to B:C ratio, during kharif, application of butachlor + 2,4-DEE (K) / pretilachlor + 2,4-DEE (R) along with 100% I.N (K & R) (W3N1) obtained the highest B:C ratio, whereas, during rabi, the highest B:C ratio was recorded by W3N2.
Key words :
Cropping system, Economics, Green manure, Growth & Yield attributes, Nutrient & Weed management.