Método simple de estimación de deficiencias nutritivas bajo condiciones de invernáculo.

Abstract

This study was carried out in order to estimate mineral nutrient deficiencies and their priorities in irrigated arable soils of the area of Villa Mercedes (San Luis, Argentine) and know the eficiency of water absortion that rye grass shows in greenhouse by means of the a simple technique which combines substractive and additive methods in pots. The achieved results show that: 1) there are no nutrient deficiencies of the K, Mg, Ca, or EM, at the researches depths; 2) S was deficient at both depths; 3) P shows a marked decrease of yield at surface level while it is deficient at mayor depth. In addition, there appeared a positive correlation between the water use made by the crop and the biomass resulting from the different treatments.