تقييم بعض أصناف البطاطا المدخلة حديثا في العروتين الربيعية و الخريفية في محافظة درعا سورية

Abstract EN

The aim of this research was to study the growth and yield of six newly introduced potato varieties and to determine their suitability to be grown as spring and autumn crops in Daraa /Syria.

The experiment was carried out during the 2006-2008 growing seasons in the fields of the Scientific Agricultural Research Center in Jellin in Daraa governorate.

A randomized block factorial design with two seasons (Spring & Autumn), six varieties and two control varieties (Spunta, and Diamant) was used.

Studied varieties showed different performance from spring to autumn seasons.

Emergence rate, stem number, stem length, and yield were reduced in the autumn crop.

However, the percentage of big tubers (>55 mm) was increased.

Matador, Everest, Almera and Zafira yielded better than Spunta, the higher control, during the spring season by 9-13%, even though differences were insignificant, so they are recommended for growing in spring.

In autumn growing season, Zafira and Almera maintained their superiority and yielded significantly higher than Spunta and insignificantly better than Diamant by 35% and 29%, respectively.

Esprit and Jelly advanced to yield better than controls, while Matador declined to become the least yielding variety, which made it less suitable for growing in autumn.