DefinePK

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 m2 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 ha1) 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.
Keywords: True Potato Seed (TPS); plant spacing; nursery; yield
http://dx.doi.org/10.19045/bspab.2015.41004