Vol. 7, Special Issue 6 (2019)
Effect of different levels of residue retention on crop performance of soybean under conservation agriculture
Author(s): Ravi Kumar, Vishwakarma AK, Biswas AK and Parmar BB
Abstract: A field experiment was conducted to evaluate the effect of different levels residue and cropping sequence on soybean production at ICAR- IISS, Bhopal during 2018-19. The experiment was laid on randomized block design with four residue levels as treatments and six replications under soybean cropping system. So the finding of the study indicates that there is significant influence of different residue level retention on plant height as compared to control. Maximum plant height of soybean was recorded under treatment T4 (90% residue) 31.78, 54, 60.43 and 60.73 cm at 30 DAS, 45 DAS, 60 DAS and at harvest respectively. The maximum number of branches in soybean of 4.00, 5.39 and 6.44 respectively were recorded under the treatment T4 (90% residue) at different growth stages 45 DAS, 60 DAS and at harvest which was significantly superior over test of the treatments. The root length was found to be significantly superior in T4 (90% residue) at 45 and 60 DAS which was on par with T3 (60% residue) T2 (30% residue). Similar trend was observed at harvest stage. At 30 & 45 DAS the maximum dry weight was noted under the treatment having highest residue level T4 (90% residue) which was significantly. Higher the level of residue higher is the number of nodules/plant. At 45 DAS, all the treatments were at par with each other but at 60 DAS significantly higher number of nodules 50.67, 55.83 were recorded in treatment T4 (90% residue). The higher dry weight of nodules was recorded in treatments comprising of higher residue level retention as compared to without residue. The data recorded that number of seeds per pod was significantly higher in treatments comprising of higher level of residue retention as compared to lower level and control. The data that highest number of pod/plant was recorded under the treatment having maximum level of residue T4 - 90% residue (43.22) which was on par with treatment T3 - 60% residue (40.89) and significantly superior to treatments T2 - 30% residue (37.67) and T1 – control (35.44). The maximum seed index was recorded in treatment T4-90% residue (10.35), which was on par with treatment T3 - 60% residue (10.24) and these treatments were significantly superior over treatments T2 - 30% residue (9.57) and T1 – control (9.13). The results that number of seed per plant was significantly higher under the treatment T4 - 90% residue (84.17) compare to treatment T3 (80.94), T2 (71.56) and T1 (59.56) control. Among all treatments the maximum seed yield was recorded in treatment T4-90% residue (1965 kg ha-1) which was on par with treatment T3 - 60% residue (1915) and these treatments were significantly superior over treatments T2 - 30% residue (1746) and T1 - control (1543 kg ha-1). The different levels of residue significantly influenced the straw yield kg ha-1. The maximum straw yield was recorded in treatment T4-90% residue (2946 kg ha-1). The data clearly shows that harvest index was found to be higher in the treatments comprising of different residue levels as compared to control but statistically they are non- significant to each other.
Pages: 684-687 | 416 Views 74 Downloads
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How to cite this article:
Ravi Kumar, Vishwakarma AK, Biswas AK and Parmar BB. Effect of different levels of residue retention on crop performance of soybean under conservation agriculture. International Journal of Chemical Studies. 2019; 7(6): 684-687.
