National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present experiment was conducted at research farm of Department of Soil Science and Agricultural Chemistry, Collage of Agriculture, Dhule (M.S.) with an objective to evaluate the phosphorus solubility and nutrient availability during phosphocomposting. Phosphocompost was prepared by using bajra straw and cotton stalks along with low grade rock phosphate (Jhabua rock phosphate, Madhya Pradesh) by pit method. The experiment was laid out in Randomized Block Design with six treatments replicated four times. Treatment composed of bajra straw and cotton stalks incorporated with three levels of rock phosphate i.e 4, 8 and 12 per cent of crop residues. The composting was carried out up to 120 days. Periodical chemical analysis of phosphocompost was carried out at 30, 60, 90 and 120 days and micronutrients (Zn, Mn, Cu and Fe) were estimated at 120 days of composting. The pH during phosphocomposting was gradually declined with time span, while, it significantly increases with increased levels of rock phosphate. The electrical conductivity was found to be increased with period and levels of rock phosphate. The maximum organic carbon content (27.34 %) was noted in cotton stalks with 4 % of rock phosphate level compost and the minimum organic C (24.13 %) was noticed in bajra straw with 12 % rock phosphate level. The maximum total N (1.36 %), total P (1.95 %), citrate soluble P (0.96 %) and water soluble P (0.082 %) contents were recorded in the phosphocompost prepared from cotton stalks + rock phosphate @ 12 % of crop residue. However, the highest total K (0.92 %) and total Ca and Mg (9.72 and 4.02, % respectively) contents were noted in bajra straw + rock phosphate @ 12 % of crop residue compost. The significantly highest Zn (2.75 mg kg-1), Mn (3.82 mg kg-1) and Fe (7.26 mg kg-1) contents were recorded in compost prepared from cotton stalks + rock phosphate @ 12 % of crop residue while, the maximum Cu content (0.32 mg kg-1) was noted in bajra straw with 12 % rock phosphate compost.
Citations |
 |
 |
 |
 |
