10-1-6 EFFECTS OF MANURE AND SPLIT-APPLICATION OF NITROGEN ON GRAIN YIELD OF MAIZE

Khondakar Yeasen Mohammad Shoukat, Abu Bakar Siddique, Dr. Md. Hazart Ali, Hasibul Hasan, Md. Marufur Rahman*
 
*Corresponding author: marufur233@gmail.com

Abstract
In order to investigate the effect of manuring and split application of nitrogen on grain yield of maize an experiment was conducted at the agronomy field laboratory of Sher-e-Bangla Agricultural University, Dhaka, during the period from March to June 2006 wherein the treatments comprised two split applications of nitrogen (SP1= 25 and 45 days after sowing and SP2=25, 45 and 65 days after sowing) and four manure (M) application doses (M1=0, M2=5, M3=10 and M4=15 t ha-1). The treatments were arranged in split plot design with three replications. Inorganic fertilizers +cow-dung 15 t ha-1 (M4 treatment) gave the best response for all the parameters were as inorganic fertilizer(IF) only (M1 treatment) gave the poorest response to grain and stalk yields which ranged respectively from 5.43 to 9.02 t ha -1 and from 6.76 to 12.16 t ha -1 due to different maturing treatments. The highest grain yield was obtained from M4 treatment, identically followed by M3 treatment. The application of cow-dung at the rate of 10 and 15 t ha-1 together with recommended dose of inorganic fertilizers improved grain yield over inorganic fertilizers alone and 3 split applications of nitrogen increased grain yield of maize over 2 split applications of nitrogen.
Key word: Maize, Manure, Split application.

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