Rice growth and soil properties as affected by tillage methods on rice direct seeding

caracteres de rendimiento cero-labranza composante de rendement crecimiento croissance crop yield cultivadores rotativos cultivateur rotatif cultivation cultivo direct sowing growth largura length longueur malezas mauvaise herbe oryza sativa paddy soils pratique culturale racine rendement des cultures rendimiento de cultivos roots rotary cultivators semis direct siembra directa soil chemicophysical properties weeds yield components zero tillage