2024, Vol. 7, Issue 4, Part F

author(s)
S Sheik Shalik, G Sivakumar and M Meyyappan

abstract
A field trial was carried out at the Experimental Farm of the Department of Agronomy, Annamalai University, Annamalai Nagar, in the 2022 cropping season. The objective was to investigate how using bone sludge, a by-product of the ossein industry, as a fertilizer along with other organic fertilizers such as bone sludge compost, pressmud compost, poultry manure compost, goat manure compost, and farmyard manure, affects the growth and yield of rice. The results of the experiment revealed that among the different treatments tested, application of bone sludge compost @ 5 t/ha + Pressmud compost @ 5 t/ha along with balance N and K through fertilizers (T₄) excelled all treatments and gave significantly higher fertility percentage of 92.45 when compared to other treatments. Considering the results of the present investigation, it can be concluded that application of bone sludge compost @ 5 t/ha + Pressmud compost @ 5 t/ha along with balance N and K through fertilizers registered highest values in number of spikelets/panicle, number of filled grains/panicle and fertility percentage in rice.