Resumo

MORALES GUEVARA, Donaldo et al. Effect of QuitoMax^® on crop growth and yield of bean (Phaseolus vulgaris L). cultrop [online]. 2016, vol.37, n.1, pp. 142-147. ISSN 1819-4087.

Due to the need to increase crop yields, this work was conducted to evaluate the effect of different doses and times of foliar application of QuitoMax^® on growth and yield of bean (Phaseolus vulgaris L). Therefore, seeds from Cuba-Cueto-25 black bean variety were sown in rows spaced 70 cm and plants separated from 6 to 7 cm. QuitoMax^® was applied within two crop cycle stages to a control and nine treatments at the rates of 200, 400 and 600 mg ha^-1 both 20-25 days after sowing and at the beginning of flowering, as well as to other three treatments at the rates of 100, 200 and 300 mg ha^-1 at the same two times above mentioned. Stem length and diameter, leaf number, pod number per plant, grain number per pod and fresh mass of 100 grains were evaluated, also crop yield per unit area was estimated. Results showed a better plant response when QuitoMax^® was applied twice, highlighting the treatment with two applications of 200 mg ha^-1, since crop yield surpassed 20 % the control treatment

Palavras-chave : growth; bean; chitosan; yield.

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