INTEGRATED NUTRIENT MANAGEMENT FOR SUSTAINABLE CROP PRODUCTION IN BANGLADESH

The effect of integrated nutrient management (INM) on crop yield in the potato-rice-rice pattern was studied through some field experiments in Bangladesh during 2009-2010. There were six fertilizer-manure treatments – control (no fertilizer or manure), farmer’s practice, 100% recommended rate of nutrients from fertilizers, and the rest treatments with 100% nutrients from manure (5 t ha^-1 for cow dung, 3 t ha^-1 for poultry manure or 10 t ha^-1 for compost) supplemented with fertilizers.
Their direct effects were evaluated on potato (‘Granola’, Netherlands origin) and the residual effects on Boro rice (‘BRRI dhan28’) and T. Aman rice (‘BINA dhan7’). The experiment was laid out in a randomized complete block design, with three replications.
These trials were conducted in farmers’ plots across two upazilas (sub-districts) of the country.
Integrated use of manure and fertilizer produced significantly higher tuber yield at all 16 sites over sole fertilizer treatment.
Effect of INM with compost or poultry manure was found better at all sites than that with cow dung.
Integrated use of poultry manure or compost with fertilizers demonstrated about 25% yield increase over 100% fertilizer treatment.
Positive residual effect of manure was observed in the following two rice crops.
A separate field trial was made to evaluate the effect of INM with cow dung or poultry bio-slurry on potato crop.
It revealed that bio-slurry had better effect on tuber yield compared to cow dung or poultry manure.
This study indicates that integrated use of manure and fertilizers is a better practice for obtaining higher crop yield.

I International Symposium on Sustainable Vegetable Production in Southeast Asia

M. Jahiruddin, M.A. Rahman, M.A. Haque, M.M. Rahman, M.R. Islam

INM, potato, rice, cow dung, poultry manure, bio-slurry

https://doi.org/10.17660/ActaHortic.2012.958.8