Productivity and growth of six okra cultivars

Abstract

The productivity and pod characteristic of 6 okra (Abelmoschus esculentus) cultivars were studied over 2 seasons in Sunraysia. The cultivars (Penta Green, Dwarf GLP, Clemson Spineless, Emerald, Perkins and Lee) were planted in late October and all produced continuously from mid January to mid April. Production fluctuated with cultivar and season and major peaks occurred particularly in the second season. The top yielding cultivars over the 2 years tested were Clemson Spineless, Dwarf GLP and Penta Green. All cultivars except Penta Green gave low yields in 1980-81. Yield and pod size also varied widely between the 2 seasons with greater yields and larger pods being produced in the cooler 1981-82 season. Production per cultivar varied markedly in a given year and it appears that those cultivars like Penta Green that have a greater ability to fruit on lateral branches produce more consistent yields between years. Pod length and weight increased rapidly after set whereas pod diameter increased slowly in comparison. After 8- 14 days pod moisture levels fell and pod toughness increased at a time when pod elongation had slowed or stopped. Seed oil contents varied from 11% w/w (Emerald) to 15% (Dwarf GLP and Penta Green). Germination percentages were: Emerald, 76; Dwarf GLP, 59; Penta Green, 49; Perkins, 48; Clemson Spineless, 44; and Lee, 35%. Clemson Spineless, Penta Green and Dwarf GLP appear to be high yielding and suitable cultivars for growing in Sunraysia.