تأثير التسميد العضوي بحامض الهيوميك و التلقيح بالفطر Trichoderma Viride في نمو إصناف مختلفة من نخيل التمر المصاب بالحشرة القشرية Parlatoria Blanchardi Targ

Abstract EN

This study was conducted in Abi Al-Khasib area in Basra governorate for the year 2018 and 2019 on three cultivars of date palm (Al-Halawi, Al-Sayer, Al-Barhi) and the experiment was carried out using the design (R.

C.

B.

D) with three replications.

The study showed that the rate of scale insect infestation Parlatoria blanchardi Targ (Homoptera: Diaspididae) on palm trees of the three studied cultivars, as its activity was low during the winter months until it reached the peak of infection during the month of May for trees treated with Humic acid, reaching 37.10, 39.27 and 39.14% , respectively, while trees Untreated with Humic acid amounted to 46.72, 43, 35 and 42.89% , respectively.

The results also showed that trees treated with Humic acid, cultivar Barhi, were less infested with scale insect with a significant difference, reaching 23.12% , while the comparison treatment amounted to 32.10% .

While there was no significant difference for Al-Sayer and Al-Halawi cultivars.

The results were fertilization with Humic acid led to a significant increase in most of the vegetative growth characteristics in the length of the fronds, the fresh and dry weight of the fronds, the content of leaves from chlorophyll (a) and (b), and the total protein in the leaves of palm trees of the three studied cultivars and the inoculation with Trichoderma viride.

A significant increase in all the studied vegetative growth characteristics.