Predicting pod fly (Melanagromyza obtusa Malloch.) incidence on long duration pigeonpea in Uttar Pradesh
DOI:
https://doi.org/10.59797/journaloffoodlegumes.v29i1.549Keywords:
Pod fly, Melanagromyza obtusa, Forecasting, Logistic Model and Weather based regression modelAbstract
Pod fly Mel anag romyza obtusa Mallo ch (Diptera: Agromyzidae) is a noxious insect pest, infesting long duration pigeonpea in eastern regions of India. Considering the economic importance of the pest in the crop, qualitative and qualitative models for predicting incidence were developed for three districts viz., Kanpur, Varanasi and Faizabad of Uttar Pradesh. Models were validated based on the pod fly damage during two preceding years (2012-13 and 2013-14) for all the three locations. Coefficient of determination (R2) during 1st SMW was 0.52 and increased to 0.78 during 4th SMW in Kanpur, Varanasi and Faizabad. Thus, model at 4th SMW was used for forecasting pod damage. By this model, prediction of pod fly incidence can be made based on temperature and relative humidity prevailing during 45th SMW of the preceding year in pigeonpea.
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