Abstract:
The soils of Dera Ismail Khan are calcareous in nature and are particularly low in organic matter, N, P and micronutrients; especially Zn. Use of only NPK fertilizers has also disturbed the C: N ratio. Consequently, the soil resource base has been degraded and factor productivity has declined. Application of organic fertilizers improves crop yield, soil physico-chemical characteristics and recycles wastes in environment friendly manner. To achieve these objectives pressmud was applied to mung bean and lentil crops in pots having 20 kg soil @ 2, 4, 6, 10, 15 and 20 tonnes ha-1. Treatments having recommended dose of N: P2O5: K2O (30:60:45 kg ha-1) were also included in the experiments. Maximum increase for most of the yield parameters of lentil was recorded in NPK treatment, followed by P6 receiving 20 tonnes ha"` press mud. The post harvest analysis of soils treated with pressmud showed progressive increase in EC, organic matter content, Na+, HCO-3, CI1- and SO42- with increasing levels of pressmud. The concentration of NPK, Zn, Cu, Fe and Mn in the treated soil samples also increased and was maximum where pressmud was applied @ 15 and 20 tonnes ha-1.
Page(s):
577-583
DOI:
DOI not available
Published:
Journal: Journal of Chemical Society of Pakistan, Volume: 30, Issue: 4, Year: 2008