Corky root disease of tomato, caused by the soil-borne fungusPyrenochaeta lycopersici, is a common and
serious problem for organic tomato production. This paper addresses the possibility of developing
a management strategy for corky root disease in participation with organic tomato growers in Sweden.
The participatory research group consisted of nine organic tomato growers from central Sweden, two
extension workers and two researchers. Regular meetings were held so that growers, extension workers
and researchers could exchange knowledge on corky root disease management. A number of research
issues were identified during group discussions: use of mulch, break crop, grafted tomato plants,
composts, composted Pyrenochaeta-infested soil, fungivorous nematodes and commercially available
bio-control agents based onTrichoderma, StreptomycesandGliocladiumin corky root disease control. The
issues were investigated in on-farm experiments and experiments at a research station. The outcomes of
the research work were presented in the group in subsequent meetings and assessed in joint discussions.
The results from the study showed that a compost with low NH4-N concentration and high Ca
concentration reduced corky root disease severity in greenhouse experiments at the research station.
However, although the potential of other measures such as use of fungivorous nematodes and
commercially available bio-control agents was demonstrated, these measures need further improvement
to be adopted in commercial growing conditions.
2008 Elsevier Ltd. All rights reserved
โรครากก๊อกของมะเขือเทศที่เกิดจากดินที่เป็นพาหะ Corky root disease of tomato, caused by the soil-borne fungusPyrenochaeta lycopersici, is a common and
ที่เป็นที่พบบ่อยและปัญหาที่ร้ายแรงสำหรับการผลิตมะเขือเทศอินทรีย์ กระดาษนี้เน้นความเป็นไปได้ของการพัฒนากลยุทธ์การจัดการสำหรับโรครากกลิ่นไม้ก๊อกในการมีส่วนร่วมกับผู้ปลูกมะเขือเทศอินทรีย์ในสวีเดนกลุ่มงานวิจัยแบบมีส่วนร่วมประกอบด้วยเก้าเกษตรกรผู้ปลูกมะเขือเทศอินทรีย์จากกลางสวีเดนสองคนงานส่วนขยายและสองนักวิจัย การประชุมเป็นประจำถูกจัดขึ้นเพื่อให้เกษตรกรผู้ปลูกคนงานส่วนขยายและนักวิจัยสามารถแลกเปลี่ยนความรู้เกี่ยวกับการจัดการโรครากกลิ่นไม้ก๊อก serious problem for organic tomato production. This paper addresses the possibility of developing
a management strategy for corky root disease in participation with organic tomato growers in Sweden.
The participatory research group consisted of nine organic tomato growers from central Sweden, two
extension workers and two researchers. Regular meetings were held so that growers, extension workers
and researchers could exchange knowledge on corky root disease management. A number of research
issues were identified during group discussions: use of mulch, break crop, grafted tomato plants,
composts, composted Pyrenochaeta-infested soil, fungivorous nematodes and commercially available
bio-control agents based onTrichoderma, StreptomycesandGliocladiumin corky root disease control. The
issues were investigated in on-farm experiments and experiments at a research station. The outcomes of
the research work were presented in the group in subsequent meetings and assessed in joint discussions.
The results from the study showed that a compost with low NH4-N concentration and high Ca
concentration reduced corky root disease severity in greenhouse experiments at the research station.
However, although the potential of other measures such as use of fungivorous nematodes and
commercially available bio-control agents was demonstrated, these measures need further improvement
to be adopted in commercial growing conditions.
2008 Elsevier Ltd. All rights reserved
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