Padrões foliares para cafeeiro conilon no Norte do Espírito Santo : pré-florada e granação

Abstract

Brazil holds the rank of largest coffee producer with 33.1 % of the world production 2010/2011 harvest. The Espírito Santo (ES) presents the national scene as the main producer of conilon coffee variety with an area of 311.197 ha in 2012/2013 and production of 9.7 million bags and the yield of 34.68 bags ha-1 , some crops reaching 150 bags ha-1 . A major challenge is related to nutritional management. Various methods are employed to get a proper diagnosis foliar analysis is one of the most adopted for use as extracting the plant itself, with increased security. To interpret the results the range of sufficiency or Critical Level, and DRIS method which assesses the balance between nutrients compared two by two. To use these tools it is necessary to determine patterns of references. Tracks Sufficiency Standards and DRIS was determined to conilon coffee crop with yield potential of 100 bags ha-1 for seven genotypes of the variety Vitória Incaper 8142, to the north of the ES in two phenological periods, pre – blooming and grain filling. Between the ages only the means of boron did not differ significantly by F test ( P < 5 % ), between 110 relations, 87 were different. For 7 genotypes studied, 6 nutrients in each season showed significant differences by Skott Knott ( P < 5%), 37 differed between the relations in the pre –blooming ande50 in the filling fruit. The sufficiency ranges and DRIS norms were established for crops with high yield in northern ES, the extractions differ between phenological periods and between genotypes. Suggests that certain values should be used only for conditions that were generated, otherwise it may not adequately represent the crops under diagnosis.