تأثير مستخلصات نباتي النيم Azadirachta indica A. Juss و التيفيتيا Thevetia peruviana (Pers.)‎ K. Schum. على نمو فطر Rhizoctonia solani Kubn المسبب لعفن جذور القطن

الملخص EN

The present showed the effect of Neem and Thevetia extract on growth of R.

solani.

The Neem and Thevetia oil seed effects inhibited the growth of R.

solani percentage of inhibition.

Data indicated that the inhibition percentage of oil seed for the Neem was 79.3% and for Thevetia it was 75.2%.

Ethanolic extract of leaves of Neem and Thevetia showed higher activity on the growth of R.

solani at higher concentration.

Applying ethanolic extract of the leaves of the Neem and Thevetia, revealed that the inhibition of the extract of leaves on the Neem was markedly higher than of Thevetia (68.9% versus 48.9%).