Premium
Compositional nutrient diagnosis and main nutrient interactions in yellow pepper grown on desert calcareous soils
Author(s) -
GarcíaHernández José Luis,
David ValdezCepeda Ricardo,
MurilloAmador Bernardo,
NietoGaribay Alejandra,
BeltránMorales Luis Felipe,
MagallanesQuintanar Rafael,
TroyoDiéguez Enrique
Publication year - 2004
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.200320370
Subject(s) - nutrient , pepper , calcareous , soil water , agronomy , arid , crop , cultivar , calcareous soils , phosphorus , horticulture , chemistry , environmental science , botany , biology , soil science , ecology , organic chemistry
Mineral‐nutrient stress is one of the main factors limiting crop production, especially in arid lands. The mineral requirement of a crop is difficult to determine, and the interpretation of foliar chemistry composition is not easy. This study was conducted to compute the minimum yield target for fresh fruit of yellow pepper ( Capsicum annuum L.) and the corresponding Compositional Nutrient Diagnosis (CND) as well as to identify significant nutrient interactions of this crop in desert calcareous soils. Preliminary CND norms were developed using a cumulative variance‐ratio function and the chi‐square distribution function. From a small database, we computed means and standard deviations of row‐centered log ratios, V X , of five nutrients (N, P, K, Ca, and Mg) and a filling value, R , which comprises all nutrients not chemically analyzed and quantified them in 54 foliar samples of the popular yellow pepper cv. ‘Santa Fé’. This cultivar is widely grown in northwest Mexico under arid conditions. These norms are associated to fresh fruit yields higher than 15.04 t ha –1 . Principal‐component analyses, performed using estimated CND nutrient indexes, allowed us to identify four interactions: negative P‐Ca, P‐Mg, and N‐K, and positive Ca‐Mg. Pepper plants growing on calcareous soils tend to take up more Ca and Mg than considered as optimum in other soil conditions.