Abstract
To explore the appropriate plant spacing for true potato seed (TPS) in nursery, the present study was mainly conducted at Agriculture Research Institute, Tandojam, Pakistan located at 25.24, 46.00,’N, 68.32, 12.00E during growing year 2009 and 2010. In this study seeds of three different true potato seed genotypes viz., TPS=9802, TPS=9804 and TPS=9805 were tested under three different plant spacing i.e. 2, 4, and 6 cm, respectively. Whereas, row to row distance was kept constant (25 cm). The results obtained from m 2 area showed maximum number of micro tubers (196.1), small tubers (42.15), medium tubers (26.56) and large tubers (7.57) when TPS-9804 was planted with 4 cm plant spacing. The maximum weight of micro tubers (1302 g), small tubers (480.3 g), medium tubers (340 g) and large tubers (468.5 g) were recorded also in TPS-9804 with same spacing. The overall results for tuber yield showed that TPS-9804 genotype planted with plant to plant distance of 4 cm recorded significantly maximum tuber yield (29.46 t ha 1 ) as compared to rest of the genotypes, hence TPS-9804 genotype is recommended for raising of TPS nursery with plant to plant distance of 4 cm.
Highlights
Potato (Solanum tuberosum L.) is one of the most prevalent and nutritive vegetable [1]
The results obtained from m2 area showed maximum number of micro tubers (196.1), small tubers (42.15), medium tubers (26.56) and large tubers (7.57) when true potato seed (TPS)-9804 was planted with 4 cm plant spacing
The results further showed that 2 cm plant spacing ranked at 3rd place by recording 34.26 small, 16.82 medium and 5.53 large tubers with total
Summary
Potato (Solanum tuberosum L.) is one of the most prevalent and nutritive vegetable [1]. It is the third most imperative non grain food crop in the world [2]. In some countries true potato seed (TPS) is used as planting material in a seed potato production scheme. The true potato seed for commercial potato production had been extensively used in China, Sri Lanka, Rwanda, Egypt, Philippine, India, Bangladesh and number of studies undertaken in different parts of Ethiopia [3-. The use of true potato seed (TPS) had many advantages over the use of seed tubers and attractive for small-scale farmers in developing countries [6]. As out of nine different spacing of directly sown true potato seed (TPS), the spacing 10 x 5 cm produced the highest yield (39.67 t ha-1) while the lowest yield (24.17 t ha-1) was obtained from 30 x 15
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