AMINOÁCIDOS NO DESENVOLVIMENTO DE DUAS CULTIVARES DE MANDIOCA

Abstract

The use of amino acids contributes to the increased productivity of the most diverse crops and the quality of agricultural products. The objective of this work was to evaluate the effect of amino acid doses, on agronomic characteristics and development of roots of two varieties of cassava. The experiment was conducted in a greenhouse at the State University of Londrina, Paraná State, Brazil. The experimental design was completely randomized with six treatments (0, 10, 20, 30, 40 and 50 kg ha-1) of amino acids in two varieties of cassava (Baianinha and Fécula Branca) with five repetitions. The cuttings were immersed for 30 minutes in a solution of 3 L of water, different doses of the amino acid product. After, the cuttings were planted in 5 kg pots at a depth of 5 cm. The variables analyzed were: number of branches, plant height, stem diameter, fresh weight of leaves, stem, number of roots, volume of adventitious roots, tubers and total roots, dry weight of leaf, stem, total of tuberous root, adventitious root and total root, and chlorophyll content. The data were submitted to ANOVA and compared by Tukey (5%), and the amino acid doses submitted to regression analysis. Differences were observed for plant height, fresh weight of stem, volume of adventitious roots, dry weight of stem and adventitious roots. Amino acid decreased the diameter of the stem and the increased number of ramifications for Baianinha. The use of amino acids does not increase the production of roots.

Keywords

• alternative fertilization
• supplementary fertilization
• cassava clones
• Manihot esculenta