Effects of different plant spacings and seed tuber sizes on some morpho-productive characteristics of potato in Huambo, Angola
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Abstract
in Huambo province, Angola, from October 2011 up to
January 2014, with the objective of evaluating the effect
of four plant spacings and three seed tuber sizes on some
morpho-productive characteristics of potato cv. Romano.
Row spacing was of 90 cm whereas plant spacings of 15, 20,
25 and 30 cm were studied along with seed tuber sizes
of 28-35 mm, 35-45 mm and 45-55 mm, for a total of
13 treatments, including a control and a reference control.
The evaluated variables were plant height, stem diameter
and stem number per square meter, leaf area and total yield.
Results showed that, under the soil and climatic conditions
of Huambo, stem diameter and leaf area, 75 days after
planting (DAP), were benefited by extending plant spacing
and using greater seed tuber sizes. However, plant height
and stem number increased when reducing plant spacing. On
the other hand, average yields of 16,4 t ha-1 were achieved
by using seed tuber sizes of 35-45 mm at a plant spacing
of 90 x 30 cm.
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