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Nitrogen and potassium in the cultivation of Piatã grass in Brazilian Cerrado soil AGRIAMBI
Morais,Léa P. V. X. C. de; Bonfim-Silva,Edna M.; Pacheco,Adriano B.; Abreu,Joadil G. de; Silva,Tonny J. A. da; Polizel,Analy C..
ABSTRACT This study aimed to evaluate the production and mineral nutrition of Piatã grass as a function of nitrogen and potassium fertilization in Oxisol collected in the Cerrado. The experiment was carried out in a greenhouse, the experimental design was completely randomized, in a 5 x 5 factorial scheme, corresponding to five nitrogen doses (0, 100, 200, 300 and 400 mg dm-3 of N) and five potassium doses (0, 90, 180, 270 and 360 mg dm-3 of K2O), with four replicates. Three cuts of the shoots were performed every 30 days. Chlorophyll index, dry mass of shoots and roots, and nitrogen and potassium contents in the leaves were evaluated. The dry mass of shoots showed interaction between nitrogen and potassium in the three cuts; in the second and third cuts,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria brizantha; Nitrogen content; Potassium content; N:K ratio in plants.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001100984
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