Height, leaf nymber, chemical composition and dry matter production of Stylosanthes Campo Grande at different levels of potassium and zinco.

Authors

  • Françoise Mara Gomes Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG
  • Cíntia Gonçalves Guimarães Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG
  • Karina Guimarães Ribeiro Universidade Federal de Viçosa, Viçosa, MG
  • Janaína de Lima Silva Universidade Federal Rural de Pernambuco, Recife, PE
  • Regina Silva Santos Universidade Federla dos Vales do Jequitinhonha e Mucuri, Diamantina, MG
  • Odilon Gomes Pereira Universidade Federal de Viçosa, Viçosa, MG

DOI:

https://doi.org/10.17523/bia.v72n3p234

Keywords:

crude protein, fertilization, height, legume, regrowth.

Abstract

The objective of this study was to determine plant height, total number of leaves, number of live leaves, chemical composition and dry mass production of Stylosanthes cv. Campo Grande at first cut and after 21 days of regrowth at different levels of potassium (K2O) with and without zinc (Zn). The experiment was conducted using a randomized block design in a 4 x 2 factorial scheme consisting of four repetitions. Four levels of K2O (0, 120, 240 and 360 mg/dm3) with and without Zn (0 and 6 mg/dm3) were used. There was no effect of the interaction between K2O and Zn levels on the structural characteristics of Stylosanthes cv. Campo Grande, and no independent effects of the different levels of K2O and Zn were observed. The mean plant height, total number of leaves and number of live leaves were 21.2 cm, 30.2 and 27.2, respectively. Dry mass production did not differ between K2O and Zn levels, with a mean production of 3.7 g/pot. There was also no effect of the interaction between K2O and Zn levels on dry matter and neutral detergent fiber content, and no independent effects of the different levels of K2O and Zn were observed, with mean values of 29.3% and 46.9% dry matter, respectively. However, an effect of the interaction between K2O and Zn levels was observed for crude protein content, which exhibited a quadratic response. Re2growth increased linearly with increasing K2O levels. Although the highest crude protein content was obtained at zero levels of potassium and zinc, potassium fertilization is advantageous since it increases the regrowth of Stylosanthes cv. Campo Grande in 21 days.

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Published

2015-10-05

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Height, leaf nymber, chemical composition and dry matter production of Stylosanthes Campo Grande at different levels of potassium and zinco. (2015). Bulletin of Animal Husbandry, 72(3), 234-240. https://doi.org/10.17523/bia.v72n3p234

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