Community structure of herbivores in peanut and corn intercropping system
2019
Lauron, Ma.R.B. | Ibisate, M.T. | Guarino, E.V.
The abundance and diversity of herbivores in peanut and corn intercropping system applied with varying levels (0, 20, 40 and 60 kg/20 sq m) of vermicopost (VC) were studied. The community structure of herbivores was analyzed using Shannon-Weiner Index (SWI). Results revealed that five functional groups of arthropods were identified such as predators, pollinators, parasitoids, decomposers and herbivores. These arthropods were collected during maturity stage. It was observed that grasshoppers and crickets (orthoptera) were dominated in plants applied with 60 kg VC kg/20 sq m. Also, collembola (springtail) was collected in plots treated with 20-60 VC kg/20 sq m indicating that mixture of substrates like VC added into the soil serves as food for the collembola. Although, the SWI ranged from 1.16 (20 kg VC/20 sq m) to 0.31 (60 kg VC20 sq m) the natural enemies (neuroptera) increases. The fresh marketable seed yield (3.71 kg/20 sq m) was significantly higher than the control (2.48 kg/20 sq m).
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