Two field experiments wcrc carncd oui ai the Expenmenral Farm of
SajEha Research Statwn. Kafr E1-Sheikh Egypt during 1994/95 and 1995/%
wuflcr nason.c lnvesflgticm aimed to study the wheat culLivars (Sakha 8. Sakha
61 and Gu’ 163). seeding rat (40. 55 and 70 Kg/fed,) and wccd control
rrearmerns. Arelon (1.25 ،Jfeid), hiind weeding (twice) and unweeded on 4cnt
yield and its cvuiponcnts,
Results indicated that using Sakha 8 cultivar rcsultcd high spikes
numher/m2, number of grains/spike. grain and biological yield/led Whereas
Sakha 61 cultiva, recorded (lic highest mean values of 1000-grain neighi. spike
weight, spike length and number of spikeless/spike.
Increasing seeding rate signilicnntiy increased number of spikes/rn’
grain and bioJogical yield /fed. Ajebe Lrcatrnent greatly increased nuner of
spikes/rn3 1000-grain weight, grain and biological yields/fed compared by hand
wding Ueatmcut.
INTRODUCTION
Wheat is one of the most important cereal crops in Egyp Increasing ITS
pmduion in Egyp cvuid be achieved by growing high yield well-adلpted
varieties acwwpanicd by optimiring wend co*trol treatments and scedilig ratch.
Diflcrence in growth habit and grvv6h raie of cereal cultivars art
continUed genetically. The light dynanuca in crop #and md cnnc nenil’ the
growth of wheat are affected by these characteflscs ( Verschwele arid Neimann,
1994).
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