Arpada yaprak yanıklığı etmeni olan Rhynchosporium commune (Zaffarano, Mc Donalds&Linde), bitkide gelişmeyi olumsuz etkilemekte ve verimi önemli ölçüde düşürmektedir. Etmen, Türkiye’de arpanın en hastalık etmenlerinden birisidir gelişmesine uygun koşullarda ürün kaybı %10-40 olabilmektedir. Bu çalışma kapsamında, yetiştirilen bazı arpa çeşitleri (63 adet) Eskişehir Geçit Kuşağı Tarımsal...

Stem rust was one of the most devastating diseases of barley in North America. Through the deployment of cultivars with the resistance gene Rpg1, losses to stem rust have been minimal over the past 70 yr. However, there exist both domestic (QCCJB) and foreign (TTKSK aka isolate Ug99) pathotypes with virulence for this important gene. To identify new sources of stem rust resistance for barley, w...

Race TTKSK (Ug99) of the wheat stem rust pathogen (Puccinia graminis f. sp. tritici) is a serious threat to both wheat and barley production worldwide because of its wide virulence on many cultivars and rapid spread from eastern Africa. Line Q21861 is one of the most resistant barleys known to this race. To elucidate the genetics of resistance in this line, we evaluated the Q21861/SM89010 (Q/SM...

Conventional seedbed preparation for spring sown crops in Sweden includes 3±4 harrowings followed by sowing, but there is a great interest among farmers to reduce this tillage. Since the soil is normally at ®eld capacity after winter, the conventional system implies a major risk of soil compaction and the farmer has to wait for the soil to dry before seedbed preparation can be started. A new te...