MSI99P1265 | |
Umrit, G Deville, J Ng Kee Kwong, K F | |
Agronomic performance and NPK recovery by maize (Zea mays L.) as influenced by fertilizer rates and season of planting | |
Periodical article | |
1991 | |
Revue agric. sucr. Ile Maurice | |
70(3): 14-25 | |
Published 1992 | |
En | |
EN Fr | |
Six fields trials were laid down to determine the nitrogen (N), phosphorus (P) and potassium (K) requirements of maize (variety Pioneer 482) in Mauritius. Significant increases in grain yield were observed by raising N and P rates up to 290 kg N/ha and 250 kg P2O5/ha, respectively. Optimum economic grain yields were however found with 210-240 kg N/ha and 150-175 kg P2O5/ha. Increasing K rate above 95 kg did not improve grain yield significantly due to the satisfactory availability of K in soils. The data obtained showed that a single NPK fertilizer recommendation could be made for pure stand maize irrespective of planting season. Ear leaf N and P concentrations associated with optimum economic grain yield were found to range from 2.69-2.74 per cent N and from 0.282-0.288 percent P. A critical K level in ear could not be established since no yield response to K fertilization was observed. Total uptake of NPK at physiological maturity were also generally similar irrespective of planting season. | |
MAIZE NITROGEN PHOSPHORUS POTASSIUM FERTILIZERS PLANT NUTRITION | |
MAURITIUS | |
MAIZE | |
Plant nutrition | |
1992-11-17 | |
En | |
Mauritius Sugar Industry Research Institute | |
LIB | |
CAT | |
CHEM |