A Study of Performance of Planters on Wet Clay Soils

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Ahmed Mohamed Ahmed, Musa
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A commercial John Deere 4-row planter was studied to evaluate its performance under wet soil conditions. Field experiments were conducted for two seasons to compare the performance of' the planter at three levels of' soil moisture using groundnuts seeds. The experimental design was a split-split plot with the main plots completely randomized. The effect of' the independent variables – moisture content, furrow openers, and seed tubes on plant population as well as their interactions were studied. Other parameters studied were soi1 compaction, tractor slippage and ridge dimensions. Data collected were processed and analysed statistically. Soil compaction increased significantly after the use of the machine. Wet soils were less affected than dry soils. Tractor slippage increased as soil moisture content increased. This increased was statistically significant. Ridge dimension (height and width) were measured. The effect on height deformations was significant, while on top width was very highly significant. The effect of soil moisture on seedling emergence was significant. The mean number of' plant population decreased with increased soil moisture content. The effect of the two types of furrow openers used showed no significant effect. Seasonal variations gave no significant effect on plant population either. Interactions of seed tubes and furrow openers gave a significant effect. Interaction between the four combinations of furrow openers and seed tubes with the three levels of moisture content showed a very highly significant effect. The best combination was the modified opener and delayed seed tube, followed by normal opener and delayed tube. Mechanical planting of row crops under wet land is accompanied by law plant population, increased wheel slippage and severe damage of ridges.
Performance ,Planters , Wet Clay Soils