Agricultural Research Corporation (ARC) - Sudan
Proceedings of the Meetings of the National Crop Husbandry Committee - NCHC
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Response
of roselle to plant spacing under flood irrigation in the Gash Delta
Mohamed ELNaseeh M. Osaman
Abstract:
Roselle was evaluated for yield of dry calyx at different plant spacing
in six locations and for five seasons in the Gash Delta. Two of these
seasons were considered as demonstrations under extreme soil moisture
conditions. Seeds of a mixed landrace (ELRahad) were sown at in–row
spacing of 40, 60, 80, 100 and 120 cm along furrows 80 or 100 cm wide in
seasons 1986-87 (2 locations), 1992-93 and 1993-94. Demonstrations were
executed in seasons 1988-89 and 1990-91. The flood irrigation periods
were different in the 4 locations, viz. 10, 20, 25 and 30 days. The
highest yield of dry calyx was recorded at the spacing of 60 x 80 cm and
80 x 80 cm, although the effects of in–row spacing on yield was not
significant. When the flood period was 20– 30 days, the highest calyx
yields were obtained at the closer in-row spacing of 40 and 60 cm; while
in shorter flood periods of 10 days the yield was higher at 80 cm. The
overall mean yield at the low flood irrigation of 4 or 10 days was 306
and 439 kg/ha, while at 20 days the yields were 550 and 703 kg/ha. The
highest yield of 1067 kg/ha was recorded at flood period of 25–30 days.
Proceedings of the Meetings of the National Crop Husbandry Committee 37th (2005) pp. 68-72
Proceedings of the Meetings of the National Crop Husbandry Committee - Sudan
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