Original research article
Ratoon Rice Response to Different Fertilizer Doses in Irrigated Condition
2008, 73 (4) p. 197-202
Muhammad Shamiul Islam, Mirza Hasanuzzaman, Md. Rokonuzzaman
Abstract
The response of different fertilizer doses was studied on the ratoon crop as well as main crop. The different fertilizer doses under the study were F1 (N=90, P2O5 = 45, K2O=50, S=13, Zn = 4: in kg ha-1), F2 (N=105, P2O5 = 55, K2O=60, S=13, Zn = 4: in kg ha-1), F3 (N=120, P2O5 = 65, K2O=70, S=13, Zn = 4: in kg ha-1), F 4(N =135, P2O5 =75, K2O=80, S=13, Zn=4: in kg ha-1) and F5 (N=150, P2O5 = 85, K2O = 90, S=13, Zn = 4: in kg ha-1). In the main crop, the highest grain and biological yields were produced by F3 dose. The highest straw yield was produced by F4 dose. The lowest grain yield and the lowest biological yield were produced by F1 dose and the lowest straw yield was produced by F2 dose. The highest crop duration was found using F1 dose and the shortest crop duration was found using F3 doses. In the ratoon crop, the highest grain yield, straw yield and biological yield was produced by F5 dose whereas the lowest grain yield, straw yield and biological yield was achieved with F1 dose. The longest crop duration was observed using F2 dose and the shortest crop duration was recorded using F5 dose.
Keywords
rice, ratoon, fertilizer dose, yield, crop duration
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