Post harvest seed quality of greengram as influenced by pre-harvest spray of insecticides

Abstract

The experiment was conducted to study the effect of insecticides and stages of insecticidal sprays on seed yield and yield components in greengram. The investigation was carried out in Department of Genetics and Plant Breeding, during Kharif 2012. The experiment was laid in factorial randomized block design (FRBD) consisted of 15 treatment combinations involving two factors with three replications. Among the five test insecticides, spraying of malathion @ 2 ml/l recorded significantly more number of pods/plant (20.75), pod weight (20.45g), seed yield/plant (3.17 g), seed yield/hectare (949 kg) and less percentage of infested pods (5.35%) as well as infested seeds/plant (2.66%). It was followed by nimbicidine and methyl parathion. Whereas reciprocal values for these seed yield parameters were noticed in the unsprayed control plants (16.13, 16.53g, 1.84g, 725 kg, 14.13% and 7.89%, respectively). Similar results were recorded in spraying of insecticides at 20 and 10 Days before harvest compare to 20 or 10 Days before harvest. Interaction effect between insecticides and stages of insecticidal spraying were found non-significant for most of the seed yield and quality parameters.

Hermetic SuperGrain bags for controlling storage losses caused by Callosobruchus maculatus Fabricius (Coleoptera: Bruchinae) in stored mung bean (Vigna radiata)

“…However, its postharvest losses showed more significant losses qualitatively and quantitatively due to insect damage. Mung bean is susceptible to infestation; nearly 65 different insect species attack this crop both in the field and during storage, which is prolific, breeds rapidly and causes severe deterioration (Raghu et al ., 2016). Callosobruchus maculatus Fabricius (Coleoptera: Chrysomelidae: Bruchinae) is the most common harmful bruchid species that damages mung beans during storage.…”

Insecticidal activity of essential oil from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Bruchidae)

“…Mungbean is susceptible to infestation by 65 recorded insect pest species in the field and during storage. These insects cause serious damage to crops (Raghu et al 2016). Gosh and Durbey (2003) estimated that 40-50% of mungbean postharvest losses result from insect infestation during storage.…”