Development and laboratory evaluation of a mixed planting machine for corn and bean

The main problems in mixed culture are using the agricultural machines for plant two or more crop simultaneously. In the present study to remove difficulties of using agriculture machinery In planting operation for corn and bean Simultaneously, a planter was designed and developed to direct planting of two different types of seeds having different shapes and sizes with precise proportion and different planting patterns using correct principles of mixed culture. For evaluation of mixed planting machine, the tests were done in a completely randomized design with 5 different distances between seeds (5.5, 8.5, 11, 13 and 16 cm) for corn planting unit and 5 different distances between seeds (10, 12, 15, 18.5, and 21.5 cm) for bean planting unit at the constant speed of 4 Km/hr with three replications. Results of corn and bean planting unit in laboratory evaluation showed that, in line with increasing the distance between seeds on the planting lines multiple, miss and precision indexes were decreased, while quality of feed index was increased.