مسح حقلي لنيماتودا تثألل حبوب القمح (Anguina tritici)‎ في محافظتي حلب و الرقة، سورية

الملخص EN

A field survey for the wheat seed gall nematode (Anguina tritici) was conducted in Aleppo and Raqqa to determine its importance during the 1996 and 1997 seasons.

From 236 villages the survey comprised 1066 durum and bread wheat fields, from which 719 and 347 spike and grain randomized samples were respectively taken during both seasons.

Grain samples were also collected from 37 purchasing centers in the two provinces.

Samples were tested and percentage of infection determined.

Results showed that infection percentage ; durum fields and its grains was in both seasons significantly higher than those from bread wheat.

In addition, there were no significant differences in infection between irrigated and non-irrigated fields in 1996; but there were highly significant differences at irrigated fields than non irrigated ones during 1997.

Fields without rotation was respected infected significantly higher than those where rotation is practiced.

Grain of spike samples proved to be significantly more infested than grain samples collected from fields during harvesting.

At the level of geo– ecological areas, samples obtained during both seasons from zone 1 and 2 (Aleppo) and zone 2 and marginal (Raqqa) were significantly more infested than other areas.

Moreover, wheat samples collected from purchasing centers, revealed that durum was significantly more infected than bread wheat.

A similar significant difference was also seen between the grand means at both provinces.

However, wheat infestation at Raqqa 1997 was significantly higher than other seasons in both Provinces