Sett size x spacing trial in white yam.
1987
Blake R.A.
A white yam sett x spacing trial was carried out at Bodles Agricultural Station in 1981-1982. This project was a 3 x 3 x 3 factorial experiment with randomized block design. Cut setts (middle portion of tubers) of the weights used for sett size treatment, were planted at the distances used for spacing treatment. Sett size treatments were 227 g, 340 g and 454 g. Treatments for spacing were 45 cm, 60 cm and 75 cm along continuous ridges 90 cm apart. Yield components (tuber number and tuber weight), were used to examine related aspects of yield, such as number of tuber size, small tuber size (categories of weight less than 1.14 kg) percentage, small tuber weight (less than 1.14 kg) percentage, marketable tuber (weight not less than 0.681 kg) percentage, marketable sett weight increases. Conclusions were based on these criteria. The optimum sett size was found to be 227 g, but 340 g is also a suitable planting sett size for white yam. Both planting sett sizes may be appropriate at 60 cm along ridges, but would be better spaced at 75 cm along ridges.
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