Influence of Planting Dates on Cane and Sugar Yields for Some Sugarcane Varieties

The present study was carried out at El-Mattana Research Station, Luxor Governorate, Agricultural Research Center, Egypt. In two plant crop seasons of 2017/2018 and 2018/2019 to study the effect of planting dates on yield for three sugarcane varieties (G.T.54-9, G.98-28 and G.84-47) grown at three planting date in mid-March, mid-April and mid-May. The date of harvesting was in mid-March for all planting dates. A split plot arranged RCBD, in four replications, was used for the experiment. The three varieties were randomly distributed to the main plot while the three planting dates were assigned to sub-plot. The results indicated that planting sugarcane in mid-March was superior in millable cane/fed, cane weight, as well as cane and sugar yields in both seasons. The commercial sugarcane variety G.T.54-9 surpassed the other two varieties in the number of millable canes/ha, cane weight, as well as cane and sugar yields. However, the variance between the commercial sugarcane variety G.T.54-9 and G.84-47 in the studied traits was mostly insignificant. This indicates that reducing the growing season by delaying planting date reduced cane and sugar yields. Under conditions of this investigation, planting commercial sugarcane variety G.T.54-9 in mid-March can be recommended to obtain the highest cane and sugar yields/ha.