Open AccessFertility Assessment in Different Depth of Soil in Rice -Wheat Cropping System of Western Terai of Nepal
Author(s) -
Prashant Raj Giri,
Poonam Bhatt,
Keshab Raj Pande
Publication year - 2022
Publication title -
international journal for research in applied science and engineering technology
Language(s) - English
Resource type - Journals
ISSN - 2321-9653
DOI - 10.22214/ijraset.2022.40669
Subject(s) - soil fertility , environmental science , soil test , nutrient , agronomy , organic matter , soil texture , phosphorus , soil organic matter , fertilizer , cropping , soil ph , soil biodiversity , nitrogen , soil nutrients , soil water , geography , agriculture , biology , soil science , chemistry , ecology , organic chemistry , archaeology
Soil fertility assessment plays a vital role in improving fertilizer efficiency by indicating the nutrients available in the soil. A research was conducted in 4 districts (Banke, Dang, Kapilvastu, and Rupandehi) at the western Terai of Nepal to study the fertility status at different soil depths (0-20, 20-40, and 40-60cm) in the paddy harvested fields. 10 samples each were collected from each district to study the nutrients available in different soil depths so that the necessary amendments could be made for the sustainable and scientific production of rice wheat. Four districts were taken as blocks and 3 different depths as the main plot. Composite soil samples were collected in each study site at 0-20,20-40 and 40-60cm soil depth. Soil physical and chemical properties like soil texture, pH, total nitrogen, available potassium, and available phosphorus were tested in the Soil laboratory at HICAST. GenSTAT, MS-Excel, and SPSS were used for data analysis. All the soil fertility parameters analyzed were significantly affected (P Dang (120.8kg/ha) > Banke &Rupendehi (81.4kg/ha) and 0-20cm depth (168.3kg/ha) > 20-40cm depth (157.7 kg/ha) >40-60cm depth (151.7kg/ha). There was no significant difference in available K levels in different depths of soil. The lowest pH was recorded in Kapilbastu district at the depth of 20-40cm (5.5). The pH of 0-20cm depth (7.147), 20-40cm depth (7.52) and 40-60 cm depth (7.449) were not significantly different as determined by DMRT. The results obtained from the study indicated that the land under rice-wheat cropping system in the western terai of Nepal has poor soil health, therefore future research strategy should be built based on the soil fertility status of the research to judge the nutrient requirement and application of nutrients for the sustainable management of crop and soil health.