Forage productivity and mycorrhization of Trachypogon plumosus pastures under phosphate fertilization

Authors

  • Newton Costa Embrapa Roraima

DOI:

https://doi.org/10.31533/pubvet.v12n10a200.1-6

Keywords:

chemical composition, green dry matter, mycorrhizal colonization

Abstract

The effect of phosphate fertilization (0, 30, 60, 90 and 120 kg of P2O5 ha-1) on green dry matter (GDM) yield and the occurrence of arbuscular mycorrhiza fungi (AMF) of Trachypogon plumosus pastures was evaluated under field conditions of Roraima’s savannas. Phosphate fertilization positively and significantly (P<0.05) affected GDM, phosphorus concentrations and extraction, but linearly reduced spore numbers and root colonization rates by AMF. Maximum GDM yields, phosphorus concentrations and uptake were obtained with the application of 91.8; 76.7 and 82.6 kg of P2O5 ha-1, respectively. The phosphorus efficiency utilization was inversely proportional to the phosphorus rates applied.

Published

2018-10-16

Issue

Section

Pastagem e forragicultura

How to Cite

Forage productivity and mycorrhization of Trachypogon plumosus pastures under phosphate fertilization. (2018). Pubvet, 12(10). https://doi.org/10.31533/pubvet.v12n10a200.1-6

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