Consulta: subjectFacets:"Nutrient contents"
Registros recuperados: 2
Data/hora: 09/06/2024 17:32:38

SPATIAL VARIABILITY IN LEAF ANALYSIS AND PRODUCTIVITY OF FERTIRRIGATED AÇAÍ
Provedor de dados: 70
Autores: Ribeiro,Felipe O.; Fernandes,Antonio R.; Matos,Gilson S. B. de; Lindolfo,Marcelo M.; Guedes,Rafael S.; Rodrigues,Graziele R.
ABSTRACT This study aimed to define management zones (MZs) for fertirrigated açaí cultivation, based on spatial variability of the foliar nutrients and productivity data. The work was carried out in an area of 5.75 ha of a 7-year crop, with 80 georeferenced sample points. Fresh fruit productivity and nutrient (N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, and Zn) contents were determined. The average contents of macronutrients were considered adequate for adult açaí plants, and their spatial dependence associated with fruit productivity allowed the representation of their distributions through maps of variability. Through multivariate analysis, three main components were highlighted. These components explained 51.5 % of the total variability of the data, where PC1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Management zones; Multivariate analysis; Nutrient contents; Precision agriculture.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600800

Foliar fertilization on the production of grafted dwarf cashew seedlings
Provedor de dados: 64
Autores: Santos,Ricardo Miranda dos; Serrano,Luiz Augusto Lopes; Taniguchi,Carlos Alberto Kenji; Artur,Adriana Guirado; Natale,William; Corrêa,Márcio Cleber de Medeiros.
ABSTRACT Foliar fertilization is an important agricultural technique that has stood out for its ease of use and can contribute to the production of high-quality and -vigor cashew seedlings. The objective of this study was to evaluate the effect of foliar fertilizer rates and time of application on ‘BRS 226’ dwarf cashew seedlings after grafting. The experiment was carried out in a completely randomized design, with five treatments and 24 replicates. Each experimental unit consisted of one plant. The commercial product (NPK 20-20-20) was used at the recommended rate for fruit crops in general, 2.5 g L-1. Foliar fertilizer applications at 45 and 60 days after grafting (DAG), with 50% of the recommended rate (1.25 g L-1), or at 80 DAG, with 100% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anacardium occidentale; Total dry matter; Seedling quality; Nutrient contents.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100249