Productivity and crude protein concentration of Tifton 85 pasture-based mixed with pinto peanut

Clair Jorge Olivo,Julio Clemente Sauthier,Caroline Paim Sauter,Marcelo Paim Sauter,Aline Rodrigues Silva,Mauricio Pase Quatrin

doi:10.1590/1413-7054201943025518

Clair Jorge Olivo, Julio Clemente Sauthier + Show 4 more

Open Access

https://doi.org/10.1590/1413-7054201943025518

Copy DOI

Abstract

ABSTRACT Mixed pasture grass-legume systems balance forage supply and minimize environmental impacts by reducing the need for nitrogen fertilization. Pinto peanut (Arachis pintoi Krap. and Greg. “Amarillo”) has several traits that are suitable for mixed pastures but have not yet been adequately explored. The aim of this study was to evaluate a mixture of Tifton 85 bermudagrass (Cynodon dactylon) and pinto peanut and evaluate forage yield, crude protein, and stocking density. A two-year study of three grazing systems was used with the following treatment combinations: (a) Tifton 85 (T) + 100 kg N ha-1 yr-1 + pinto peanut (T + PP+100); (b) T + 100 kg N ha-1 yr-1 (T + 100; control, pure grass); and (c) T + 200 kg N ha-1 yr-1 (T + 200; positive control, pure grass). In this study, forage yield, pasture characteristics and responses of lactating cows were evaluated. The experimental design was completely randomized with three treatments (grazing systems), three replicates (paddocks), and repeated measures (grazing cycles within seasons). Forage accumulation, crude protein concentration, and stocking rate were 15.1; 11.3 and 14.1 t DM ha-1 yr-1; 17%, 16%, and 17%; and 5.3; 4.9 and 6.1 AU ha-1 day-1, respectively. The grass-legume system yielded the best results.

Highlights

The bermudagrass cultivar Tifton 85 [Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt Davy] has high forage yield, good nutritional value, and better animal performance than other varieties (Hill; Gates; Burton, 1993; Scaglia; Boland, 2014)
The only observed difference (p < 0.05) was in the summer when the lowest pre-grazing herbage mass was measured for the T + 100 pure grass system
Cattle trampling had no influence on the proportion of pinto peanut in the pasture composition

Summary

Introduction

The bermudagrass cultivar Tifton 85 [Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt Davy] has high forage yield, good nutritional value, and better animal performance than other varieties (Hill; Gates; Burton, 1993; Scaglia; Boland, 2014). × C. transvaalensis Burtt Davy] has high forage yield, good nutritional value, and better animal performance than other varieties (Hill; Gates; Burton, 1993; Scaglia; Boland, 2014). Nitrogen fertilization increases forage accumulation and protein concentration in Tifton 85 (Carvalho et al, 2000) the increasing cost of nitrogen fertilizer may limit its use (Sollenberger, 2008). Increase herbage yield and nutritive value, improve seasonal forage distribution (Ames et al, 2014), and decrease nitrogen fertilizer use, thereby reducing its adverse environmental impact (Olivo et al, 2017). Greg.) adapts well to grazing and has high productivity and nutritive value (Olivo et al, 2017). It is associated with superior animal performance (Lascano, 1994)

Objectives

Methods

Results

Conclusion