Abstract:
ABSTRACT
Okra [Abelmoschus esculentus L. Moench] is nutritionally very important crop and is traditionally grown in Benishangul Gumuz Regional State. The productivity of the crop is however very low partially due to improper agronomic practices including undefined inter- and intra-row spacing. Field experiment was conducted in Tsentsalu Small- Scale Irrigation scheme during the 2017/2018 irrigation season to determine the appropriate inter- and intra-row spacing for higher yield of okra under Benishangul Gumuz Asossa District condition. Factorial combination with three inter row spacing (30cm, 45cm and 60cm) and four intra row spacing (15cm, 25cm, 35cm and 45 cm) was laid down in randomized complete block design with three replications. The results of the present study revealed that almost all the growth and yield components of okra were significantly influenced by the main as well as interaction effects of inter- and intra - row spacing. Except plant height, number of leaves per plant, days to flowering and pod setting, length, diameter, and weight of green pods increased with increasing inter - and intra-row spacing in the present study. The maximum green pod yields of 22.92 t ha-1 and 23.75 t ha-1 were recorded in 35cm and 45cm inter and intra - row spacing respectively, and also 25.18 t ha-1, 24.43 t ha-1 and 24.22 t ha-1 were recorded with the interaction of 45 cm x 35 cm, 45 cm x 25 cm and 60cm x35cm inter- and intra-row, respectively, Also result of the economic analysis showed that highest net benefit 415,959, birr ha-1, was obtained from plant spaced at 45 cm x 35 cm inter -and intra-row spacing respectively, followed by net benefit 401,042 birr ha-1 from plant spaced at 45 cm x 25cm inter - and intra - row spacing respectively. Based on the results of the present study, inter - and intra - row spacing of 45 cm x 35 cm and 45 cm x 25 cm can be recommended for higher green pod yield of okra in Tsentsalu Small-scale Irrigation Scheme of Assosa District. As the experiment was done only for one growing season and single location, it is however recommended to repeat the study at various locations and over different seasons to make forceful recommendation.
Key words: Pod diameter, Pod length, Green Pod yield, Pod weight and pod bearing zone