3 documents found, page 1 of 1
Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochl...
Cavalcanti, André Cayô; Partelli, Fábio Luiz; Gontijo, Ivoney; Dias, Jairo Rafael Machado; Freitas, Marta Simone MendonçaTo diagnose and monitor the nutritional status of commercial crops, reference standards must be established based on chemical analyses of soils and leaf tissues. Therefore, the objective of this study was to establish sufficiency ranges, DRIS standards and leaf nutritional diagnoses for palisade grass pastures in the rainy and dry seasons. Of a total of 105 sampled pastures, the 20 highest-yielding areas were u...
Chromium levels in conilon coffee seedlings developed in substrate with tannery...
Berilli, Sávio Silva; Berilli, Ana Paula Candido Gabriel; Carvalho, Almy Júnior Cordeiro de; Freitas, Silvio de Jesus; Cunha, MauraThe use of by-products of the leather processing industries in agriculture represents a major breakthrough in production processes, nutrient cycling and agro-ecological awareness. However, the use of tannery sludge as seedling’s substrate shows the presence of chromium, considered a harmful element, under specific conditions, to the environment. The experiment was carried out at the Federal Institute of Educati...
Substrata fertilized with coated urea and the growth and nutritional state of t...
Azevedo, Eduardo Buchaul; Marinho, Cláudia Sales; Muniz, Rodrigo de Almeida; Carvalho, Almy Júnior Cordeiro deTwo experiments were carried out with the objective of evaluating the growth and nutritional state of the young citrus tree in function of different levels of coated urea (UR). In the first experiment, carried out from transplanting (01/2006) up to the budding point (06/2006), five levels of UR were evaluated (0, 0.5, 1.0, 2.0 and 4.0 kg m-³ of substratum) and two substrata (Plantmax® and another obtained from ...