relation: http://oar.icrisat.org/3115/ title: Assessment of yield loss due to insect pests at different growth stages of groundnut in Pantnagar, Uttar Pradesh, India creator: Singh, K N creator: Sachan, G C subject: Groundnut description: Field experiments were conducted during the 1988 and 1989 rainy seasons to assess yield loss at different growth stages in groundnut (peanut) due to insect pests. The crop was infested by thrips at the vegetative stage; by thrips, jassids and Spilosoma obliqua Walker at flowering; by thrips, S. obliqua and Spodoptera litura Fabricius at pegging, and by S. litura and S. obliqua at both podding and pod maturity. The greatest yield loss caused by insect pests at any crop stage was 31.4% in 1988 and 23% in 1989. Damage occurring during the bloom and vegetative stages resulted in maximum yield loss. Thus, crop protection measures at the vegetative and bloom stages are most effective in minimizing the yield loss due to insect pests in groundnut. publisher: Elsevier date: 1992 type: Article type: PeerReviewed format: application/pdf language: en identifier: http://oar.icrisat.org/3115/1/JA_1349.pdf identifier: Singh, K N and Sachan, G C (1992) Assessment of yield loss due to insect pests at different growth stages of groundnut in Pantnagar, Uttar Pradesh, India. Crop Protection, 11 (5). pp. 414-418. ISSN 0261-2194 relation: http://dx.doi.org/10.1016/0261-2194(92)90023-X