[Critical periods of baby corn intercropped with paprica, caused by weed competition]
1999
Moenandir, J. (Universitas Brawijaya, Malang (Indonesia). Fakultas Pertanian) | Sugiarti, U. | Sebayang, H.T.
This experiment was aimed to find the critical periods of Baby Corn and Paprika plants as a result of weed competition when they were planted on multiple cropping system. The experiment was conducted in the village of Ngenep, Karangploso District, Regency of Malang at 112 deg. Eastern Longitude, 7.9 deg. Southern Latitude, with an altitude of 772 metres above sea level. The Group Random Design was applied to three planting system, monoculture baby corn (M1), monoculture paprika (M2) and baby corn intercropped with paprika each comprised 12 treatments (weed-free and weed-infested) with 3 replications. The treatments were B1 (weed-free 0-12 dap), B2 (weed-free 0-24 dap), B3 (weed-free 0-36 dap), B4 (weed-free 0-48 dap), B5 (weed-free 0-60 dap), B6 (weed-free harvest), B7 (weed-infested 0-harvest), B8 (weed-infested 0-60 dap), B9 (weed-infested 0-48 dap), B10 (weed-infested 0-36 dap), B11 (weed-infested 0-60 dap), and B12 (weed-infested 0-12 dap). The Duncan Test (p=0.05) was used to determine the differences among treatments. Observation was conducted in every 12 days in term to measure the number of leaves, length of stems, diameter of the stems, total dry weight of plants, kind of weeds at pre and post experiment, together with the dry weight of weeds. The result showed that treatments yielded high production could be ranked as B6, B5, B11 and B12 respectively. The critical point of the baby corn on monoculture system was at 34 DAP while on intercropping system was at 36 DAP. The dominant weed in baby corn planting was Amaranthus spinosus and in paprika planting was Richardia brasiliensis. Multiple cropping was the most effective system in pressing down the growth of weeds up to 64 percent in weed-free condition and up to 19 percent in weed-infested condition
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