N, P, K fertilizer requirements of potato in relation to soil P and K status under Mauritian conditions

Code (CO)	MSI99P0076
Author (AU)	Bholah, M. A. Cavalot, P. C. Wong Yen Cheong, K. Deville, J. Govinden, N.
Title - English (ET)	N, P, K fertilizer requirements of potato in relation to soil P and K status under Mauritian conditions
Thesis-Parent title (TH)	Govinden, N., Julien, M. H. R., Hunt, G. L. T. Autrey, L. J. C. (eds)., Production, Post-harvest technology and utilization of potato in the warm tropics - Proceedings of a workshop held in Réduit, Mauritius, 23-27 July 1990
Document Type(DT)	Book chapter
Date of publication (DP)	1991
Source (SO)	p.60-67
Publisher (PB)	Réduit, Mauritius Sugar Industry Research Institute, MU
Language of text (LT)	En
Language of summaries (LS)	En Fr
Abstract (AB)	The effects of N, P and K on potato yield, petiole and tuber composition and nutrient uptake were evaluated over a three year period in field trials in the major production zones of Mauritius. N and K applications did not consistently improve yield but the response to P was most significant at all rates. Nutrient levels in petiole and tuber were significantly increased with N and K but not with P. Nutrient uptake by tubers showed that the potato crop had a high requirement for K. Soil P and K threshold values for maximum yield were estimated to be 175 ppm P and 0.6 m.e. per cent K, using 0/1M H2SO4 as extractant. Analysis of soil for available P and K were found to be necessary for the recommendation of optimum P and K rates.
Descriptors - English (DE)	POTATOES FERTILIZERS NITROGEN POTASSIUM PHOSPHORUS PLANT NUTRITION SOIL SCIENCE SOIL CHEMISTRY
Descriptors - Geographic (DG)	MAURITIUS
Sort Key 1(K1)	Potatoes: Soil science and plant nutrition
Sort Key 2 (K2)	Soil chemistry and fertility
Date record entered (DA)	1991-12-11
Language of analysis (LA)	En
Affiliation (AF)	Mauritius Sugar Industry Research Institute
Location (LO)	LIB
Processing status (PS)	CAT
MSIRI Staff (MS)	CHEM FC