O objetivo neste trabalho foi avaliar a cobertura do solo proporcionada pela crotalária e milheto consorciados em diferentes proporções, bem como seus efeitos na qualidade física do solo. A instalação do experimento obedeceu ao delineamento em blocos casualizados. Os tratamentos foram constituídos de crotalária (Crotalaria spectabilis ) (CR) e milheto (Pennisetum glaucum L. ) (MI) consorciados em diferentes proporções de semeadura, totalizando seis tratamentos: 100% CR (crotalária solteira); 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 20% CR + 80% MI; 100% MI (milheto solteiro), com quatro repetições. As variáveis avaliadas foram a biomassa seca aos 118 dias após a semeadura, a porcentagem de cobertura do solo e umidade do solo aos 30, 60, 90 e 120 dias após o manejo das plantas, a resistência a penetração até 40 cm e densidade do solo na camada de 0-10. Aos 118 dias após a semeadura, a crotalária, o milheto e seus consórcios produziram quantidade de biomassa seca suficiente para promover a cobertura do solo de em média 77% até os 120 dias após o manejo das plantas, contudo não foram capazes de promover diferenças nos atributos físicos do solo. Palavras-chave: Física 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.

The objective of this study was to evaluate the effect of an early application of potassium (K) fertilizer on pearl millet (Pennisetum glaucum L.) grown during fall/winter on the performance of maize (Zea mays L.) silage grown in succession. Using a randomized block design, in the fall/winter harvest, the plots were composed of millet and six doses of K (0, 30, 60, 90, 120 and 150 kg K2O ha-1) as muriate of potash (57% K2O) in addition to fallow. In the summer harvest, during the cultivation of maize, six doses of K2O were applied complementary to the doses applied in the autumn/winter harvest to total 120 kg K2O ha-1 (120, 90, 60, 30, 0) and 0 kg K2O ha-1 for the no cover treatment. An additional treatment that was planted to received the recommended fertilization amount (60 and 90 kg ha-1 of K2O for planting and broadcasting, respectively). For the millet, was evaluated plant height, green and dry biomass yields, and soil cover at 30, 60, 90 and 120 days after harvest . For maize, agronomic traits, leaf nutrient content and green and dry biomass yields were evaluated. The early application of K fertilizer did not alter the yield components of millet and silage maize. However, the straw produced by the millet was efficient at promoting soil cover in the off-season.

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O objetivo deste estudo foi avaliar o desempenho da crotalária e milheto consorciados em diferentes proporções, bem como a melhor época de manejo e a combinação de consórcio para a produção de palhada. O delineamento utilizado foi o de blocos casualizados em esquema de parcela subdividida, sendo as parcelas constituídas de crotalária (Crotalaria spectabilis (CR) e milheto (Pennisetum glaucum (L.) (MI) consorciados em diferentes proporções (100% CR; 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 100% MI) e as subparcelas duas épocas de manejo (86 e 118 dias após a semeadura), com quatro repetições. No qual tiveram como variável resposta a altura de plantas e a biomassa seca. O índice de eficiência e uso da terra foi calculado por meio dos dados obtidos de massa seca total dos consórcios aos 118 dias após a semeadura. A melhor época para o manejo das plantas em consórcio foi aos 118 dias após a semeadura, onde se obteve a quantidade suficiente de massa seca para cobertura do solo sob sistema de plantio direto. O consórcio mais vantajoso em termos agronômicos foi o constituído por 20% CR + 80% MI. Palavras-chave: Palhada. Crotalaria spectabilis.  Pennisetum glaucum (L.).   Crotalary performance consortiated with millet in biomass production Abstract The objective of this study was to evaluate the performance of intercropped crotalary and millet in different proportions, as well as the best management time and the combination of intercropping for the production of straw. The design used was that of randomized blocks in a subdivided plot scheme, with plots consisting of crotalary (Crotalaria spectabilis) (CR) and millet (Pennisetum glaucum (L.)) (MI) intercropped in different proportions (100% CR; 80% CR + 20 % MI; 60% CR + 40% MI; 40% CR + 60% MI; 100% MI) and the subplots two management times (86 and 118 days after sowing), with four replications. In which the height of plants and dry biomass were the variable response. The efficiency and land use index were calculated using data obtained from the total dry mass of the consortia at 118 days after sowing. The best time for the management of the intercropped plants was 118 days after sowing, where sufficient dry mass was obtained to cover the soil under no-tillage system. The most advantageous consortium in agronomic terms was the one constituted by 20% CR + 80% MI. Keywords: Straw. Crotalaria spectabilis. Pennisetum glaucum (L.)