Author(s):

SG Telkar, AK Singh and Kamal Kant

Abstract: A field experiment was conducted during Kharif 2016 at CPGS, CAU, Umiam, Meghalaya. The soil was sandy clay loam in texture, moderately acidic in reaction (pH 5.23), high in soil organic carbon (1.02 %) and medium in available Nitrogen, Phosphorus and Potassium (315.04, 16.34 and 196.12 kg ha^-1, respectively). The experiment consist of eight treatments such as sole maize, sole soybean, 1:1replacement, 1:1additive, 2:1replacement, 2:1additive, 2:1paired and 2:2paired) replicated thrice in randomized block design. Maximum plant population recorded from sole plant arrangement in both the crops. However, at harvest soybean population recorded with 1:1replacement was significantly higher over all the remaining intercrop treatments. Significantly higher dry matter accumulation recorded from sole arrangement of both the crop except 1:1replacement is at par. Significantly higher value of crop growth rate and relative growth rate at 30-60 Days after sowing in maize and soybean observed in 1:1replacement and sole soybean respectively. However, maximum net assimilation rate recorded from both the crop in 2:1replacement intercropped treatment. Maximum values of land equivalent ratio, area time equivalent ratio and Total Relative Yield recorded from 2:2paired followed by 1:1additive and 1:1replacement intercropped treatments. Relative Efficiency Index of intercropping at 0-30 days after sowing was significantly higher in 2:1additive planting arrangement over all the intercropping treatments. There is no significantly difference in harvest index maize and soybean due to spatial arrangement except 2:1paired in maize and sole soybean in soybean has significantly lower harvest index. The finding is concluding that 1:1replacement has better growth habit has compared to other intercropped treatments.

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