Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Cover crops affect the soil chemical properties under no-till system

2016; Southern Cross Publishing; Volume: 10; Issue: 8 Linguagem: Inglês

10.21475/ajcs.2016.10.08.p7408

1835-2693

Simone Cândido Ensinas, Ademar Pereira Serra, Marlene Estevão Marchetti, Eulene Francisco da Silva, Elaine Reis Pinheiro Lourente, Eber Augusto Ferreira do Prado, Flávia Araújo Matos, Pedro Henrique Altomar, Matheus Andrade Martinez, Douglas Costa Potrich, Vanessa do Amaral Conrad, Maílson Vieira Jesus, Tárik Cazeiro El Kadri,

Crop Yield and Soil Fertility

The purpose of this study was to assess the changes in soil chemical properties affected by the cover crops cultivated in crop rotation in short-term of no-till implementation under Rhodic Hapludox soil.This research was carried out from October 2010 to February 2014.The experiment was set up in completely randomized blocks in a factorial design with eight treatments (cover crops) and three soil depths (0-5, 5-10 and 10-20 cm) with four repetitions.The cover crops were: fall-winter maize (T 1 ), intercropping fall-winter maize with B. ruziziensis (T 2 ), intercropping fall-winter maize with B. brizantha cv.Marandu (T 3 ), intercropping fall-winter maize with Crotalaria spectabilis (T 4 ), B. ruziziensis (T 5 ), B. brizantha cv.Marandu (T 6 ), Pennisetum glaucum L. (T 7 ) and fallow (T 8 ).The T 6 and T 7 affected exchangeable Mg +2 , it was observed higher exchangeable Mg +2 in T 6 (2.39 cmol c dm -3 ) and T 7 (2.43 cmol c dm -3 ) in comparison to T 1 .The phosphorus content showed interactive effect between cover crops and soil depth.In the comparison among the depths, the P contents were higher in 5-10 cm, which showed improvement of 24.6% and 25.2% in comparison to 0-5 and 10-20 cm layers, respectively.The cover crops evaluated in this research affected the exchangeable Mg +2 and K + , as well as Mg +2 and K + saturation.The P content changed in response of cover crops, which was important to observe that this nutrient may increase the content with adoption of cover crops in no-till system.The species used in this research might be recommended to integrate a crop rotation system with the possibility of increasing P availability in topsoil depth in no-till system.