Vol. 5, Issue 6 (2017)
Effect of conservation tillage on biological activity in soil and crop productivity under rainfed Vertisols of central India
Author(s): Awanish Kumar, Anusuiya Panda, LK Srivastava and VN Mishra
Abstract: The investigation was pointed to compare the effects of three tillage systems viz. conventional tillage (CT), reduced tillage (RT) and no-tillage (NT) and four cropping systems namely, Soybean + P. Pea (2:1), Soybean – Wheat, Maize + P. Pea (1:1), Maize – Gram) on soil living environs in terms of dehydrogenase activity (DHA), fluorescein diacetate hydrolysis activity (FDA), liable carbon (KMNO4 extractable) and soil organic carbon (SOC). Soil samples were collected at the end of 3rd crop cycles from the layer of 0-15 cm depth. Within tillage systems, SOC were reported higher in RT (0.63%) and NT (0.62%) as compared to CT (0.57%) at surface soil (0-15cm). At 0-15cm depth, RT and NT registered significantly (P<0.05) higher SOC concentration compared to CT. The liable carbon (LC) content in surface soil (0-15 cm) was followed same trends of SOC, it follows the trend of RT > NT > CT. Further, cropping systems (CS) significantly affect this fraction of carbon at the surface layer. Moreover, soil enzymatic activity was significantly (P<0.05) affected by the imposed tillage systems. The results of DHA reported that significantly (P<0.05) higher in NT (122.35 µg TPF g-1 day-1) system compared to RT (109.65 µg TPF g-1 day-1) and CT (77.07 µg TPF g-1 day-1). The FDA was reported significantly (P<0.05) higher in RT (30.85 µg fluorescein g-1 h-1) followed by NT (27.95 µg fluorescein g-1 h-1) and CT (22.91 µg fluorescein g-1 h-1) at 0-15cm depth. Pearson correlation (r) showed significant correlations between soil organic carbon and studied soil biological parameters. The results of this study also confirmed effectiveness of studied parameters as soil indicators owing to sensitiveness towards management practices.
Pages: 1939-1946 | 692 Views 50 Downloads
How to cite this article:
Awanish Kumar, Anusuiya Panda, LK Srivastava, VN Mishra. Effect of conservation tillage on biological activity in soil and crop productivity under rainfed Vertisols of central India. Int J Chem Stud 2017;5(6):1939-1946.