Effect of plant density on seedling tuber yield and yield components of plants grown from true potato seed (PTS) during two contrasting seasons
1997
Bereketsehai Tuku (IAR, Addis Abeba (Ethiopia)) | Hailemichael Kidanemariam
Nursery experiments were carried-out during two contrasting seasons to evaluate the effect of density of plants grown from true potato seed (TPS) on seedling tuber yield and yield components. In both seasons, increasing plant density decreased plant survival rate, increased tuber number per m squared, and reduced tuber number per plant and mean tuber weight but did not influence tuber yield per m squared. With increasing density, the proportion of number of tuber less than 10 g increased whereas that of tuber greater than 50 g decreased. The positive effect of density on tuber number per m squared was mainly due to high proportion of small (less than 10 g) tubers. The proportion of number of tubers in the grades 10-30 g and 30-50 g was either reduced or not affected by increasing density. Plant density did not influence tuber dry matter content.
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