الفهرس 
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Abstract
This research concerned with studying the performance oi sugarcane (Saccharum Ep hybrids in Upper Egypt. experiments were carried out at Nag Hap1inadi Cane arch Station Farm during the ;cessive seasons 1985/1986 1986/1987. The first experiment was planted on Narch.
5 (spring planting). but the second one was on October.
5 (autumn planting). Each experiment was laid out in split-
t design and replicated four times. Factor (B), i.e. the
sugarcane hybrids were applied entire block of factor (A)
e. the four ages at harvest during December, January, February March. In the first experiment (spring planting), the
rst stubble was cutting after 12 months of cutting the plant Op i.e. there were four treatments of harvest times camber, January , February and March. The results obtained hi be summarized as follows
Effect of environmental factors on sugarcarie characters
i) Effect of age at harvest
Age at harvest showed highly significant effects on all aracters studied, either in spring or in aut UP’” in favour
k increasing age
.1.