Agronomic performance and NPK recovery by maize (Zea mays L.) as influenced by fertilizer rates and season of planting

Code (CO)	MSI99P1265
Author (AU)	Umrit, G Deville, J Ng Kee Kwong, K F
Title - English (ET)	Agronomic performance and NPK recovery by maize (Zea mays L.) as influenced by fertilizer rates and season of planting
Document Type(DT)	Periodical article
Date of publication (DP)	1991
Series (SE)	Revue agric. sucr. Ile Maurice
Source (SO)	70(3): 14-25
Notes (NO)	Published 1992
Language of text (LT)	En
Language of summaries (LS)	EN Fr
Abstract (AB)	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.
Descriptors - English (DE)	MAIZE NITROGEN PHOSPHORUS POTASSIUM FERTILIZERS PLANT NUTRITION
Descriptors - Geographic (DG)	MAURITIUS
Sort Key 1(K1)	MAIZE
Sort Key 2 (K2)	Plant nutrition
Date record entered (DA)	1992-11-17
Language of analysis (LA)	En
Affiliation (AF)	Mauritius Sugar Industry Research Institute
Location (LO)	LIB
Processing status (PS)	CAT
MSIRI Staff (MS)	CHEM