تأثير تكميم العذوق بألوان مختلفة من البولي أثيلين و الرش بالجبرلين في بعض الصفات الثمرية و الحاصل لنخلة التمر(Phoenix Dactylifera L. )‎ صنف بريم

Abstract EN

The study was conducted at Horticultural Research Station affiliated to the Ministry of Agriculture / General Company for Horticulture, 45 km South of Baghdad for the period from March 2018 to September 2018 to investigate the effect of bunch covering with different colors of polyethylene and gibberelline spray on some physical and yield of date palm fruits cv.

Braim.

the coverage treatments included four levels and included, (control) unbagged bunches, bunches covering with transparent perforated polyethylene, bunches covering with perforated blue polyethylene and bunches covering with perforated black polyethylene, on the other hand, spraying bunches with gibberelline included three concentration (control) spray bunch with distilled water, spray bunch with gibberelline 75mg.

l-1 and spray bunch with gibberelline 150mg.

l-1.

A factorial experiment performed within Randomized Complete Block Design with three replicates.

The results showed that coverage treatments with polyethylene significantly affected on most of physical characteristics of fruits, perforated black polyethylene achieved the highest value of the fruit length, fruit flesh weight, while it gave the highest value of the fruit diameter, fruit weight and fruit maturity rate, also, perforated blue polyethylene and perforated black polyethylene resulted in an increase in the yield weight and significantly reduced fruits drop rate in comparision with (control).

GA3 spray was significantly affected in most of physical chracteristics, especially 150mg.

l-1 which led to an increase in fruit length, fruit diameter, fruit flesh weight, fruit weight and yield weight, while reduced the fruits drop and fruit maturity rate in comparison with (control).