Development and Evaluation of A Carrot Seeder

Document Type : Original Article

Authors

1 Agric. Eng. Res. Inst., Agric. Res. Center, Dokki, Giza, Egypt.

2 Agricultural Mechanization Department - Agricultural Engineering Research Institute - Agricultural Research Center, Dokki, Giza, Egypt.

Abstract

The main objective of the present investigation is to develop and evaluate the performance of a carrot seeder with 12 vertical rollers with cells metering, The performance of the developed seeder was experimentally investigated in the laboratory under seven metering-device speeds ranged between 20 to 140 rpm and three cell-sizes of 1, 2 and 3 seed/cell and tested in the field with uncoated and coated seeds under four forward speeds 2, 3, 4 and 5 km/h. The main results of this study can be summarized in the following points: The maximum seeding rates of 2.218 and 7.863 kg/fed were obtained at metering speed of 20 rpm (ground-wheel speed of 10 rpm) and cell size of 3 seed/cell using uncoated and coated seeds, respectively. Meanwhile, the minimum seeding rates of 0.462 and 2.097 kg/fed were obtained at metering speed of 140 rpm (ground-wheel speed of 70 rpm) and cell size of 1 seed/cell for uncoated and coated seeds, respectively. The maximum carrot-plant emergences of 95.11 and 97.15 % were obtained at forward speed of 2 km/h and cell size of 3 seed/cell using uncoated and coated seeds, respectively. Meanwhile, the minimum carrot-plant emergences of 92.01 and 94.22 % were obtained at forward speed of 5 km/h and cell size of 1 seed/cell for uncoated and coated seeds, respectively. The maximum carrot-fruit yields of 13.11 and 18.62 Mg/fed were obtained at forward speed of 2 km/h and cell size of 3 seed/cell for uncoated and coated seeds, respectively.

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