Abstract
The present study focused on the utilization of solid wastes viz. wet blue leather of leather industry, rice husk ash from rice mills, and water hyacinth in addition to a commercial steamed bone meal for the invention of nutrient-enriched organic fertilizer. To produce NPK organic fertilizer, chromium-free wet blue leather (WBL) as nitrogen source was amalgamated with rice husk ash, water hyacinth, and commercial steamed bone meal as a potassium and phosphorus source. The efficiency of such developed organic fertilizer designated as type I was tested as a nutrients source on the marigold plant. Ammonia analysis of fertilizer applied soil samples revealed that the content of liberated free ammonia in the soil fertilized with organic fertilizer was 44.80 %, 20.70 %, and 10.35% higher than the natural soil, chemically fertilized soil and fertilized with vermicompost respectively. Application of developed organic fertilizer and vermicompost designated as type II on marigold plant resulted in significant growth which are comparable to those obtained with commercial Chemical fertilizer. The plant growth increased by chemical fertilizer, Type I fertilizer, and Type II fertilizer in terms of plant height 26.5 %, 20 %, 22.7% and leaf size 21.2 %, 15.4 %, 17.3 % respectively which are observed to be higher than the growth of the control plant.
Highlights
Continuous apply of chemical fertilizers, showing negative impact on the soil environment
Formulation has been made for the development of an organic fertilizer production using nitrogenous collagenic material, available other low-cost potassium-rich ingredients viz. rice husk ash and water hyacinth ash in addition with phosphorus enriched commercial steamed bone meal as a source of plant nutrients (Lima et al, 2010)
The present study demonstrated that the developed organic fertilizer type I was prepared by using nitrogen, phosphorus and potassium enriched organic source materials
Summary
Continuous apply of chemical fertilizers, showing negative impact on the soil environment. Need enhancing organic inputs to reduce weakening soil quality of the agricultural field (Kochakinezhad et al, 2012). Rice husk ash and water hyacinth ash both are phosphorus and potassium-rich organic source which can be used as fertilizer for better plant growth (Masaka and Ndhlovu, 2007; Priyadharshini and Seran, 2009). Formulation has been made for the development of an organic fertilizer production using nitrogenous collagenic material (after chromium removal from WBL), available other low-cost potassium-rich ingredients viz. To evaluate the efficacy of this formulated fertilizer has been studied on the marigold (Tagetes) plant
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