Produção de biomassa e cobertura do solo pelo consórcio de crotalária e milheto e sua influência em propriedades físicas dos solo
ForScience(2021)
Abstract
O objetivo neste trabalho foi avaliar a cobertura do solo proporcionada pela crotalaria e milheto consorciados em diferentes proporcoes, bem como seus efeitos na qualidade fisica do solo. A instalacao do experimento obedeceu ao delineamento em blocos casualizados. Os tratamentos foram constituidos de crotalaria (Crotalaria spectabilis ) (CR) e milheto (Pennisetum glaucum L. ) (MI) consorciados em diferentes proporcoes de semeadura, totalizando seis tratamentos: 100% CR (crotalaria solteira); 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 20% CR + 80% MI; 100% MI (milheto solteiro), com quatro repeticoes. As variaveis avaliadas foram a biomassa seca aos 118 dias apos a semeadura, a porcentagem de cobertura do solo e umidade do solo aos 30, 60, 90 e 120 dias apos o manejo das plantas, a resistencia a penetracao ate 40 cm e densidade do solo na camada de 0-10. Aos 118 dias apos a semeadura, a crotalaria, o milheto e seus consorcios produziram quantidade de biomassa seca suficiente para promover a cobertura do solo de em media 77% ate os 120 dias apos o manejo das plantas, contudo nao foram capazes de promover diferencas nos atributos fisicos do solo.
Palavras-chave: Fisica do solo. Palhada. Sistema de plantas de cobertura.
Biomass production and soil coverage by the crotalary and millette consortium and its influence on physical properties
AbstractThe aim of this work was to evaluate the soil cover provided by crotalaria and millet intercropped in different proportions, as well as their effects on the physical quality of the soil. The installation of the experiment followed the randomized block design. The treatments consisted of crotalary (Crotalaria spectabilis) (CR) and millet (Pennisetum glaucum L.) (MI) intercropped in different sowing proportions, totaling 6 treatments: 100% CR (single crotalary); 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 20% CR + 80% MI; 100% MI (single millet), with 4 repetitions. The variables evaluated were dry biomass at 118 days after sowing, the percentage of soil cover and soil moisture at 30, 60, 90 and 120 days after plant management, the resistance to penetration up to 40 cm and soil density in the 0-10 layer. At 118 days after sowing the crotalary, the millet and their intercropping produced enough dry biomass to promote an average 77% soil cover until 120 days after plant management, however, they were unable to promote differences in the physical attributes of the soil.
Keywords: Soil physics. Straw. Cover plants system.
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