NUTRIENTS CYCLING AND ACCUMULATION IN PEARL MILLET AND PAIAGUAS PALISADEGRASS BIOMASS IN DIFFERENT FORAGE SYSTEMS AND SOWING PERIODS

Raoni Ribeiro Guedes Fonseca Costa; Eduardo da Costa Severiano; Kátia Aparecida de Pinho Costa; Wender Ferreira de Souza; Eduardo Valcácer Brandstetter; Wayron Araújo de Castro; Charles Barbosa Santos

doi:10.5380/rsa.v18i4.51955

Authors

Raoni Ribeiro Guedes Fonseca Costa Professor da Universidade Estadual de Goiás - UEG, Campus Quirinópolis
Eduardo da Costa Severiano Professora dos Programas de Pós-Graduação em Ciências Agrárias do Instituto Federal Goiano – IF Goiano, Campus Rio Verde
Kátia Aparecida de Pinho Costa Professora dos Programas de Pós-Graduação em Zootecnia e Ciências Agrárias do Instituto Federal Goiano – IF Goiano, Campus Rio Verde http://orcid.org/0000-0002-9555-5089
Wender Ferreira de Souza Bolsistas de Pós-Doutorando do Instituto Federal Goiano – IF Goiano, Campus Rio Verde
Eduardo Valcácer Brandstetter Mestrando do Programa de Pós-Graduação em Zootecnia do Instituto Federal Goiano – IF Goiano, Campus Rio Verde
Wayron Araújo de Castro Graduando em Zootecnia do Instituto Federal Goiano – IF Goiano, Campus Rio Verde
Charles Barbosa Santos Professor; Graduate Program in Agricultural Sciences/Agronomy; Instituto Federal Goiano Campus Rio Verde

DOI:

https://doi.org/10.5380/rsa.v18i4.51955

Abstract

Developed the study objective of was to evaluate nutrient cycling and accumulation in pearl millet and Paiaguas palisadegrass biomass under different forage systems and sowing periods in integrated crop-livestock. The experiment followed a randomized block design with a 5 × 2 factorial arrangement and three replications, under five forage systems (monocropped pearl millet, monocropped Paiaguas palisadegrass, pearl millet intercropped in rows with Paiaguas palisadegrass, pearl millet intercropped between rows of Paiaguas palisadegrass and pearl millet oversown and intercropped with Paiaguas palisadegrass) and in two sowing periods (February and March). The results showed that Paiaguas palisadegrass monocropped or intercropped in rows or between rows, exhibited the highest nutrient cycling and accumulation in the remaining biomass. Nutrient accumulation the under all of the examined forage systems showed the following decreasing order: K > N > Mg > Ca > P > S. Potassium was the nutrient exhibiting the greatest accumulation in the biomass and it exhibited a higher percent decrease with decomposition time. The first sowing period for the forage systems led to higher nutrient cycling and accumulation in the biomass. Intercropped systems through in integrated crop-livestock showed a promising technique to maintain the nutrient cycling and accumulation with sustainability.