http://eajbsa.journals.ekb.eg/ Effects of Various Salts on The Efficacy of Bacillus thuringiensis against the Larval Instar of Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

This study was carried out to study the effect color of Jasmine flowers (Jasmine spp. Fam. Oleaceae) on the infestation by Macrosiphum rosae (L.) (Homoptera: Aphididae) and Tetranychus urticae Koch (Acari: Tetranychidae) using four varieties (colors) of Jasmine plants similar in the horticulture characters but different in the color of the flower only, (yellow, red, blue and white). Experiments were done in two locations (governorates), El-Orman Garden (Giza Governorate) and International Garden (Alexandria Governorate) throughout 2019 /2020 season under glasshouse conditions.Results obtained showed that the infestation with boss M. rosae and T. urticae began to appear on the 1 st February 2020 season and recorded the activity peak during mid of April month then decreased until the beginning of August at the same season. Results obtained showed also that flower colors of jasmine arrange for the attracted boss the two pests as follows: yellow, red, blue and white, respectively.Results obtained also showed that boss the total sugar and total protein arranged to descend in the jasmine flowers color as follows: yellow, red, blue and white).Statistical analysis showed that there were highly significant differences between the four flowers' color (varieties) of jasmine on the attraction of boss the two pests. And Statistical analysis showed also that was highly significant differences between the four flowers color (varieties) of jasmine on the content of boss total sugar and total protein.