Assessment of soil chemical and biological properties under cotton-wheat and rice-wheat cropping system in south-west part of Bathinda, Punjab
Loading...
Date
2019
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Punjab Agricultural University, Ludhiana
Abstract
The present study was undertaken to assess different soil chemical and biological properties under cotton-wheat and rice-wheat cropping system in Sangat block of Bathinda district, Punjab. The soil samples were collected from surface soil (0-15cm) and sub-surface soil (15-30cm) using GPS location. The pH values of soils from both the cropping system was neutral to alkaline in reaction ranging higher under cotton-wheat cropping system. EC was observed to be highest in rice-wheat cropping system at both surfaces. Results revealed that organic carbon, available N, available P and available S was higher under rice-wheat cropping system. Among exchangeable bases exchangeable K was reported to be higher under cotton-wheat cropping system whereas exchangeable Ca and Na were higher under rice-wheat cropping system. DTPA-extractable micronutrients (Fe, Cu, Zn, and Mn) were higher under cotton-wheat cropping system but at par with rice-wheat cropping system. Among biological properties, higher DHA was reported in cotton-wheat cropping system whereas alkaline and acid phosphatase was reported to be higher in rice-wheat cropping system. Nutrient index value among both the cropping system was calculated and it was reported that the soil was low in N (1.4 and 1.3), Fe (1.2 and 1.1) and Ca (1.2 and 1.3), medium in K (2 and 2) and Mn (1.9 and 1.7) and higher in P (2.6 and 2), S (2.6 and 2.4), Zn (2.9 and 2.7) and Cu (3 and 2.9) availability under cotton-wheat cropping system at 0-15 and 15-30 cm depth respectively. Under rice-wheat cropping system the soil was low in Ca (1.4 and 1.5), Fe (1.4 and 1.3) and Mn (1.3 and 1.3) availability at 0-15 and 15-30 cm respectively, medium in N availability (1.6) at 0-15 cm and low (1.2) at 15-30 cm depth and medium in K (2.2 and 1.8) availability at 0-15 and 15-30 cm respectively and higher in P (2.9 and 2.7), S (2.6 and 2.6), Cu (2.8 and 2.8) and Zn (2.6) availability at 0-15 cm depth whereas Zn availability was medium (2.4) at 15-30 cm depth.