Compositional nutrient diagnosis in two oil palm genetic materials

Resumen

Oil palm is a hybrid formed from different genetic materials, where different genetic varieties possibly have different nutritional demands. The O x G hybrid is supposed to need more nutrient than the Afriacana palm. The diagnosis of nutritional composition is made by the method of diagnosis of compositional nutrients, which uses nutritional standards in cormercia plantations, this method also supports the recommendation of fertilization. The objective was to generate standards for the diagnosis of nutritional composition (CND) in oil palm for N, P, K, Ca, Mg, S and B leaf and to perform diagnoses in tenera and interspecific hybrids (O x G). The CND and Sufficiency Ranges (FS) method was used in 240 samples of plantations in Pará, up to 6 years old, as well as data on the yield of dried fruit cluster (FFB) and chemical analysis of leaves for N, P, K, Ca, Mg, S and B. Oil palm plantations are located in the Moju municipality, in the north of the state of Pará. Reference values ​​were obtained based on the multivariate relationships between CND indices and nutrients. . Comparing leaf contents and degree of agreement (DA) with sufficiency ranges (SR). In both methods, the nutrient with the highest deficiency was S. The plots with tenera and O x G presented, respectively, more cases of B and S deficiency by CND. This method points out different nutritional needs among genetic materials, as well as may help better fertilization recommendations.