PJB-2020-265
ASSESSMENT OF ORGANIC MANURES FOR PHOSPHORUS RELEASE FROM ROCK PHOSPHATE AND P UPTAKE BY SORGHUM FODDER (Sorghum bicolor L.)
Quratul Ain
Abstract
Phosphorus is a second deficient nutrient after nitrogen and is considered as one of the essential plant nutrients. This research study was carried out to estimate phosphorus release from rock phosphate by using organic manures and P uptake by sorghum plants in different treatments like T1 = Recommended NPK, T2 = Recommended NK + P zero, T3 = Recommended NK + Half recommended P + Half P from PROM (phosphate rich organic manure), T4 = Recommended NK + All recommended P from PROM, T5 = Recommended NK + Recommended P + All recommended P from PROM. Completely randomized design (CRD) was followed to arrange pots. It was revealed by results that combination of PROM and DAP showed maximum plant height (123.94 cm), stem diameter (0.54 cm2), fresh and dry weight of plant (33.44 g, 5.11 g), length of plant roots (7.00 cm), fresh and oven dry root weight (3.05 g, 1.11 g) when compared with all other treatments. PROM also indicated changes to other soil associated properties like EC (dSm-1) and pH. Similarly, PROM and recommended NKP from DAP produced the highest value of organic matter (0.94%), phosphorus (16.92 ppm) and potassium (177.80 ppm) concentration in soil as well as nitrogen (2.33%), phosphorous (0.24%) and potassium concentration in plants (1.88 %) as compared to other treatments. It is evident from the results that phosphate rock is an alternate supply of phosphorus and is a better substitute to the conventional phosphorus fertilizers when it is used in combination with organic manures.
To Cite this article:
Download
