Comparative performance of three small seed tuber sizes and standard size seed tubers planted at similar stem densities

摘要: Small seed tubers of 1–5 g, 5–10 g and 10–20 were planted at the same sprout densities as standard size 40–60 in order to give similar stem densities. Early ground cover by foliage, total yield, yield >45 mm consistently greater plots with larger tubers. The effect tuber on number per varied between years but always gave lower yields than Reducing spacing rows from 90 cm 60 maintaining density was more effective increasing small 20 40 sprouts m2 reducing plant within row.