The Evaluation of Some Tomato genotypes Against Tomato leaf Miner Tuta absoluta Merrick. Insect under tow Sowing Dates

                         El Ahmed *(1) and M. K. Nahhal)2)

(1). Aleppo Agricultural Scientific Research Center, GCSAR, Syria.

2- Plant Protection Department, Faculty of Agriculture, Aleppo University, Aleppo, Syria

(*Corrsponding author: M. El Ahmed. E-Mail:

Received: 17/11/2019                                Accepted: 08/12/2020


Broiler chicken samples were collected from different markets in Lattakia city in 2016-2017, the total account and groups of bacteria of broiler skin were done. Then the changes in the populations of the groups of bacteria were examined after each of five consecutive washings in mixtures of sodium hydroxide (NaOH) and oleic acid (OA), where portions of skin from commercially processed broiler carcasses were washed in distilled water (control) and in mixture (0.5% NaOH – l% OA) by using a laboratory blender to agitate the skin in the solutions. After each wash, skin was transferred to fresh solutions, and washing was repeated to provide samples washed one to five times in each solution. Bacteria in reinstates of the washed skin were enumerated on plate count (PC) agar, Hektoen Enteric Agar, Mackonkey agar, EMB agar, SS agar, Pseudomonas-Cetrimid-Agar, the results showed that no significant differences were observed in numbers of bacteria recovered on PC, or on all other selective medium from skin after repeated washing in water. Repeated washing of skin in (0.5% NaOH – 1% OA) generally produced significant reductions in the number of bacteria recovered on all medium. Furthermore, no gram-negative enteric bacilli or coliform bacteria, in particular E. coli, were recovered from skin washed four times in (0.5% NaOH – 1% OA). Likewise, no Pseudomonas spp. was recovered from skin washed three or more times in this mixture.

Keyword: Tomato Leaf Miner, Planting Date, Tomato Varieties

Full paper in Arabic: PDF