Domateste bakteriyel benek hastalığının biyolojik mücadelesinde farklı bitki aktivatörleri ve biyolojik preparatların etkisi

Abstract

Pseudomonas syringae pv. tomato (Okabe) Young, Dye and Wilkie cause bacterial speck disease on tomato plants. Although copper compounds are used in the control of this disease, resistance of bacterial disease agent to copper compounds is recently concerned. Therefore it is important to use eco-friendly new alternative control methods for disease concerned within the scope of sustainable agriculture practices. In this context, the aim of this study is to investigate the possibilities of using biopreparat and plant activators that stimulate resistance in the plant in bacterial speck disease management. Methods and Results: The effect of five plant activators (Crop-Set, ISR-2000, KingBo, Sergomil L60, Turf-Set) and a biopreparat Serenade® SC (1.34% Bacillus subtilis QST 713) that can be used in organic and conventional production against bacterial speck disease has been investigated in the plastic greenhouse. According to the results, it was determined that the treatments reduced the speck on the leaves by 16-50% and on the stems by 25-50%. Although all applications were found to be successful in suppressing the speck disease symptoms on the leaves and stem, Turf-Set, ISR-2000 and Sergomil applications were determined to be the most successful applications. Turf-Set, CropSet and ISR-2000 applications provided a 4-56% increase in the dry weight of the plant. Conclusions: The Turf-Set and ISR-2000 applications were determined as the most effective applications based on effect on suppressing the disease on the leaves and stem and on plant growth. Significance and Impact of the Study:The results obtained from the study show that plant activators have the potential to be used as an alternative method of control to chemicals, especially in organic agriculture.

Adana ve Osmaniye illerinde yetiştirilen mısır bitkilerinde bakteriyel gövde çürüklüğü hastalığının saptanması ve biyolojik mücadele olanaklarının araştırılması

“…Bakteriyel Gövde Çürüklüğü Hastalığı etmeni Dickeya zeae topraktaki mikrobiyal aktivitenin zayıf, bitki gelişimini teşvik eden rizobakteri (Plant Growth Prpmoting Rhizobacteria; PGPR) oranının düşük olduğu toprakları tercih etmektedir (Kumar ve ark., 2017). Dayanıklılık mekanizmalarını uyaran bitki aktivatörleri ile toprağın mikrobiyal aktivitesini artıran biyolojik mücadele elemanlarının yani antagonistlerin kullanımı bitki hastalıklarının baskılanması açısından önemlidir (Aktepe, 2021;Bitgen & Mirik, 2021;Karnez ve ark., 2021). Bu çalışmada Dickeya sp.…”