Transforming Plant Wastes along with Cattle Dung and Other Substrates into Organic Wealth Through Partial Decomposition and Vermi Composting
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 4
Abstract
An experiment was conducted at LRS farm of NAU, Navsari during 2008 & 2009 in order to convert Sugarcane trash (ST), banana pseudo stem (BPS) wast material along with 7 to 10 days old cattle dung (CD), fish meal (FM), Subabul leaves/ twigs (SB) and rock phosphate (RP) into organic wealth i.e., vermicompost through partially decomposition and sub sequently vermicomposting following twelve combination of treatments { 1) T1: Absolute control (100%CD) , 2) T2: (100% CD+RP), 3) T3 : (CD 50% w/w+FM 50% w/w+RP) T4: (CD 50% w/w+ ST 50% w/w+RP) T5: (CD 50% w/w+SB 50% w/w+RP),T6: (CD 50% w/w+BPS 50% w/w+RP),T7: (CD 50% w/w+FM 25% w/w+ST 25% w/w+RP) T8: (CD 50% w/w+FM 25% w/w+SB 25% w/w+RP), T9: (CD 50% w/w+FM 25% w/w+BPS 25% w/w+RP),T10: (CD 50% w/w+ST 25% w/w+SB 25% w/w+RP),T11: (CD 50% w/w+ST 25% w/w+BPS 25% w/w+RP) and T12: (CD 50% w/w+SB 25% w/w+BPS 25% w/w+RP} under completely randomized design (CRD). Raw materials were placed in heap (3 m length x 1.5 m width x 1m height) in 6-7 layers (each of 15 cm height). Slurry of decomposing culture was thoroughly mixed with each layer and allowed for partial decomposition for one month and then the same material was allowed for vermicomposting for 55 days maintaining moisture level to about 55%. Six representative samples were drawn from each treatment for analysis purposes. Pooled results revealed that significantly the lowest C: N ratio (13:1) and the highest total Nitrogen content (3.22%) were obtained under T6 . i.e. under 50% (w/w) cattle dung +50% (w/w) banana pseudo stem + 5% (w/w) rock phosphate treatment followed by T11 i.e. 50% (w/w) cattle dung + 25% (w/w) sugarcane trash + 25% (w/w) banana pseudo stem + 5% (w/w) rock phosphate treatment. It was observed that the vermicompost prepared under T6 treatment had higher N content, comparatively lower C: N ratio, marginally adequate macro, secondary, micro nutrients along with significantly low heavy metal content (Cd, Pb and Ni) as compared to manure prepared under T11. However, significantly the lowest Co was recorded in end product prepared under T11. Hence, vermicompost prepared under treatment T6 was considered as the most superior over others followed by manure (vermicompost) prepared under T11.
Authors and Affiliations
Amaresh Das, G. G. Patel, M. C. Patel
Keywords
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