Vol. 6, Issue 6 (2018)
Influence of tillage practices and weed control methods on organic carbon pools and physical properties of sandy clay loam soil in north central India
Author(s): Manoj Kumar, Verma SK, Priyadarshani A Khambalkar, Asha Arora and Narendra Singh
Abstract: A four year field experiment (2014–2017) was conducted at Gwalior (Typic Ustochrepts), India with pearlmillet [Pennisetum glaucum (L.)]- mustard [Brassica juncea (L.) Czern. & Coss.] cropping sequence having five tillage practices; conventional tillage (CT), zero tillage (ZT) and their combinations with or without residue (R) management as the main plot, and three weed management practices as vertical plots in strip plot design. SOC concentration was significantly higher under ZT+R-ZT+R compared to CT-CT and CT-ZT and was at par to ZT-ZT +R at 0-15 cm. Contribution of non labile (CNL) pool was more compared with very labile (CVL), labile (CL) and less labile (CLL) pool of SOC under all treatments. Concentration of active (CACT) pool was higher in ZT-ZT+R with Oxyflourfen (0-30 cm); whereas passive (CPSV) pool was higher in ZT+R-ZT+R with Pendimethalin. The CACT to CPSV ratio was highest in CT-ZT with Pendimethalin (0-15 cm) and ZT-ZT with 1HW (15-30 cm). BD was increased in zero tillage treatments as compared with conventional tillage at (15-30 cm). Tillage practices and their interaction showed significant variation for MWD (>125µm) and total aggregates at 15-30 cm. Surface soil temperature was higher in conventional tillage compared with zero tillage and residue incorporation treatments at 2p.m. (March 2017). Zero tillage with residue incorporation showed downside effect on increased BD in lower depths.
Pages: 1699-1705 | 346 Views 68 Downloads
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How to cite this article:
Manoj Kumar, Verma SK, Priyadarshani A Khambalkar, Asha Arora, Narendra Singh. Influence of tillage practices and weed control methods on organic carbon pools and physical properties of sandy clay loam soil in north central India. Int J Chem Stud 2018;6(6):1699-1705.
