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Field evaluation of a grain drill equipped with jointers for direct planting in previous wheat crop residues

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Figure

Fig. 2. Jointer: 1- share; 2- moldboard; 3- shank; 4- yoke; 5-drill seed tube holder (all measuring in mm).
Table 1. Specifications of moldboard plow and jointer
Table 3. Comparison of the mean values of experiment variables
Table 4, the mean values of length and mass of rootsamples for the direct planting system were less thanthose in the conventional farming system while the

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