Pig slurry composting as a nitrogen source in proso millet crop

Abstract

With the intensification of pig farming systems, in Brazil, the production of swine waste has increased considerably, leading to water and soil contamination, due to its improper release. Pig slurry composting is an alternative that can be used in order to avoid or reduce negative impacts, especially for producers with physically limited farm areas, or those who intend to increase the number of animals in their production units. This study aimed at evaluating the influence of pig slurry compost doses on the agronomic characteristics and grain yield of proso millet. A randomized blocks design experiment was installed with four replications and five treatments: control without fertilization, control with mineral fertilizer (NPK) and pig slurry compost doses (4.0 Mg ha-1, 8.0 Mg ha-1; 12.0 Mg ha-1). The pig slurry composting increased the dry matter yield, number of grains per plant and grain yield of proso millet, when compared to the control with or without mineral fertilizer. The proso millet yield, at the doses of 8.0 Mg ha-1 and 12.0 Mg ha-1 of pig slurry, was superior than for both the control without fertilization and the control with the recommended mineral fertilizer, with the latter reaching a maximum agronomic efficiency at the dose of 8.0 Mg ha-1.

Agronomic Performance of Millet Plants Grown in Soil Fertilized With Organic Wastes

“…The use of poultry litter and swine manure as a source of nitrogen in major grain crops well documented in the literature; due to the high nitrogen content in these organic matter and the high demand of N by grasses, these plants presents, in most cases, positive responses to the organic matter application (Musa et al, 2012;Lyimo et al, 2012;Pinto et al, 2014;Basso et al, 2017). In addition it should also be considered, there need strategies to reduce the volume of waste, maximize their fertilization potential and reduce the environmental pollution (Silva et al, 2016).…”

Teste de condutividade elétrica em sementes de painço (Panicum miliaceum L.)

“…O estabelecimento de lavouras de produção de painço está vinculado a diversos fatores, como o preparo adequado do solo, a época de semeadura, o local para cultivo, a temperatura, a disponibilidade hídrica, a sanidade das plantas e o emprego de sementes de alta qualidade, sendo um dos fatores preponderantes para o sucesso de qualquer cultura (Abrantes et al, 2011;Basso et al, 2015;Silva et al, 2016;.…”