A modified parametric index to estimate yield potentials for irrigated alfalfa on soils with gypsum in Quinto (Aragón, Spain)

A modelling approach is described to assess potential productivity of soils with gypsum in Quinto for irrigated alfalfa, taking into account the environmental conditions, described during a detailed soil survey, and different management levels

D. Laya

2002

Scholarcy highlights

  • A modelling approach is described to assess potential productivity of soils with gypsum in Quinto for irrigated alfalfa, taking into account the environmental conditions, described during a detailed soil survey, and different management levels
  • The soils assessed in this article are: Xeric Torrifluvents, Xeric Torripsamments, Typic Haplogypsids, and Typic Haplocalcids
  • The simplest or highest situation is an alfalfa cropping system in which the production potential depends on radiation and temperature regime during the crop cycle
  • As these factors cannot normally be manipulated, the yield of alfalfa is only determined by its physiological characteristics, the prevailing level of irradiance and the temperature regime
  • Water availability is considered optimal under irrigation, yield potential in the second hierarchical production situation is determined by reducing the climatic production potential for unfavourable soil conditions, including gypsum content, and by considering different management levels
  • The proposed model is useful in assessing comparative land productivity and allows an evaluation of the impact of the considered soil characteristics on the final crop production
  • Quantification of the major constraints allows estimation of the required inputs to increase productivity

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