JOURNAL of Soil Biology and Ecology

Impact of agrochemicals on the population of litter entomobryid collembolans in the grass ecosystem 

Author:BANASHREE MEDHI

Abstract :

The impact of agrochemicals, including insecticide (Flubendiamide), acaricide (Fenazaquin), fungicide (Tricyclazole), IGR (Buprofezin), and water-soluble fertilizers (50:40:25 kg NPK/ha) on the abundance of entomobryid collembolans in a grassland habitat covered with a thick mat of grasses was studied. Among the treated plots, 2FA of tricyclazole was observed significantly toxic on entomobryids. The fungivores entomobryids food chain was affected by tricyclazole. On the other hand, plot treated with 1FA of fenazaquin sounded safer. There was increase in population on 10 DAT. However, significant reduction in entomobryids was noticed on 30 DAT. Further reduction was observed on 80 and 95 DAT. Maximum reduction was observed in 2FA of fenazaquin on 10 DAT. On 30 DAT, 2FA of fenazaquin and fertilizers reported maximum reduction of entomobryids while, on 80 DAT, plots treated with 2FA of flubendiamide registered maximum reduction over control population. On 95 DAT, plot treated with one and two foliar treatments of fenazaquin, 1FA of flubendiamide,2FA of buprofezin was registered highest reduction over control.

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