Estimation of Economic Decision Levels of Aphid, Aphis Craccivora Koch on Indian Bean, Lablab Purpureus (Linn.) Sweet

Asian Resonance(P: ISSN No. 0976-8602 RNI No.UPENG/2012/426228 VOL.-III, ISSUE-IV, October-2014 E: ISSN No. 2349 - 9443) 

Abstract


 Bhavana Godwal 

Department of Entomology, S. K. N. College of Agriculture Skrau, Jobner, Rajasthan.


K.C. Kumawat 

Department of Entomology, S. K. N. College of Agriculture Skrau, Jobner, Rajasthan.


S.K. Khinchi 

Department of Entomology, S. K. N. College of Agriculture, Skrau, Jobner, Rajasthan.

In the present investigation conducted during Kharif, 2009, the management cost incurred at highest net return was Rs. 2049.00 ha-1 . The gain threshold of 341.5 kg ha-1 was computed on the basis of whole sale price of pods of Indian bean (Rs. 6.00 kg-1 ) and current management cost (Rs. 2049). The corresponding value of economic injury level (EIL) was worked out to be 24.19 aphids per shoot. In the field, the mean aphid population was found to be increased at the rate of 3.09 aphids per day per shoot. Based on economic injury level (EIL), the economic threshold level (ETL) was estimated to be 21.10 aphids per shoot. 

for full paper please visit below link :

http://www.socialresearchfoundation.com/upoadreserchpapers/1/25/150223074638english.pdf

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