اعلانات هامة

The research work has been carried out  in the main agricultural center in Deir Ezzor on apricot trees which  belong to Alajami - and alhamawi – varieties. The trees were sprayed with boron solution in concentration (0 , 200 , 400 ppm)  in tow times , the first time is at full growth of bodes , the second one is at flower  stage . then the effect of foliar applications of boron was studied  and its concentration on fruit setting , fruit weigh , total soluble  solids and  titratable acidity.

The  results showed  that there isn't any significant effect of time of foliar applications of boron on percentage of the  fruit setting and  fruit weigh , total soluble  solids and titratable acidity in fruit juice  , on the other hand there was a significant effect of boron concentration on percentage of the  fruit setting , the treatment of 400 ppm was progressed on witness treatment . as it was showed that there is significant effect of concentration on the average of fruit weigh just in  alhamawi – varieties.  while the treatment of 400 ppm was progressed on witness treatment in significant way. And it was found a significant effect of solution concentration on total soluble  solids just  in alhamawi apricot juice . but the spraying in boron solution decreased  titratable acidity in fruit juice  in significant way.

Key words:  alhamawi apricot , Alajami apricot , boron , foliar application , fruit setting , T.S.S , titratable acidity.

تم تنفيذ البحث في المركز الزراعي الأول بدير الزور على أشجار مشمش تنتمي للصنفين العجمي والحموي، حيث رشّت الأشجار بمحلول البورون بالتراكيز