Forage production and chemical composition of Stylosanthes capitata cv. Lavradeiro under phosphorus levels  

Authors

  • Newton Costa Embrapa Roraima
  • Valdinei Tadeu Paulino Paulino Instituto de Zootecnia, Nova Odessa, SP
  • Vicente Gianluppi Instituto Federal de Rondônia,
  • Amaury Burlamaqui Bendahan Embrapa Meio-Norte
  • João Avelar Magalhães Embrapa Roraima

DOI:

https://doi.org/10.22256/pubvet.v12n5a98.1-6

Keywords:

chemical composition, green dry matter, nodulation

Abstract

The effects of phosphorus levels (0, 40, 80 and 120 kg of P2O5 ha-1) on green dry matter (GDM), chemical composition and nodulation of Stylosanthes capitata cv. Lavradeiro were evaluated under field conditions in Roraima´s savannas. Phosphorus fertilization increased significantly (P<.05) GDM yields, nitrogen (N), phosphorus (P), calcium (Ca), magnesium (Mg) and potassium (K) concentrations and number and dry weight of nodules. Maximum GDM yields and Ca, Mg and K contents were obtained with the application of 89.4; 56.2; 113.1 and 75.6 kg of P2O5 ha-1, respectively, while the N and P contents and number of nodules were directly proportional to P levels. The P critic level, related to 90% of GDM maximum production, was estimated at 2.43 g kg-1. The P efficiency utilization was inversely proportional to the P rates applied.

Published

2018-05-04

Issue

Section

Pastagem e forragicultura

How to Cite

Forage production and chemical composition of Stylosanthes capitata cv. Lavradeiro under phosphorus levels  . (2018). Pubvet, 12(05). https://doi.org/10.22256/pubvet.v12n5a98.1-6

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