A long term experiment on the use of chicken manure was established since 2003 wet season at PhilRice CES. The study was conducted to (1) determine the effect of continuous use of chicken manure alone or in combination with inorganic fertilizer and with micronutrients on the growth
And yield of irrigated lowland rice and (2) to determine the change in physicochemical properties of the soil. Air – dried chicken manure was incorporated 7 days before transplanting. Inorganic fertilizer (IF), 120-40-40 (DS) and 90-40-40 (WS) kg NPK/ha, and zero fertilizer treatments were included as checks.