Quantification of Avoidable Yield Losses in Mustard Caused by The Aphid, Lipaphis erysimi (Kalt.)
K. Anvesh *
Department of Entomology, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Hyderabad, India.
R. Sunitha Devi
Agricultural Information and Communication Centre, Professor Jayashankar Telangana State Agricultural University, Hyderabad, India.
S. Omprakash
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University, Warangal, India.
N. Balram
Seed Research and Technology Centre, Professor Jayashankar Telangana State Agricultural University, Hyderabad, India.
D. Padmaja
All India Co-Ordinated Research Project on Forage Crops, Professor Jayashankar Telangana State Agricultural University, Hyderabad, India.
*Author to whom correspondence should be addressed.
Abstract
Present study was conducted during rabi, 2021-22 and 2022-23 at Regional Agricultural Research Station, Polasa, Jagtial to assess the yield losses due to mustard aphid, Lipaphis erisimi in mustard crop. The results during rabi, 2021-22 and 2022-23 showed that the avoidable yield loss due to mustard aphid was 70.43 and 66.02 per cent, respectively. The pooled results indicated that the highest seed yield was recorded under protected condition (13.71 q/ha) which was 3.15 times higher as compared to that under unprotected condition (4.34 q/ha). An avoidable yield loss of 68.30 per cent was recorded in seed yield under protected condition with an additional yield of 9.37 q/ha over unprotected condition.
Keywords: Aphid, yield losses, per cent reduction, mustard crop