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Problematika vzniku rezistence Cercospora beticola Sacc. na některé účinné látky fungicidů (CROSBI ID 243606)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kristek, Suzana ; Jović, Jurica ; Zmaić, Krunoslav ; Kraljičak, Željko ; Kišpal, Hubert ; Bešlo, Drago ; Horvat, Dražen ; Stjepanović, Boris ; Rašić, Sanda Problematika vzniku rezistence Cercospora beticola Sacc. na některé účinné látky fungicidů // Listy cukrovarnické a řepařské, 133 (2017), 7/8; 222-226

Podaci o odgovornosti

Kristek, Suzana ; Jović, Jurica ; Zmaić, Krunoslav ; Kraljičak, Željko ; Kišpal, Hubert ; Bešlo, Drago ; Horvat, Dražen ; Stjepanović, Boris ; Rašić, Sanda

češki

Problematika vzniku rezistence Cercospora beticola Sacc. na některé účinné látky fungicidů

Leaf spot caused by the pathogenic fungus Cercospora beticola Sacc. is the most important disease of sugar beet. The disease is very aggressive to sugar beet and in favorable conditions it expands rapidly and can completely destroy sugar beet leaves. Plants, whose leaves were destroyed, develop new leaves (retro- vegetation), however, they are weak and result in lower yields and sugar content. Generally, the occurrence and intensity of the attack by this fungus mostly depends on weather conditions during summer growing season. The amount of damage depends on the resistance of the genotype and all provided agro-technical measures. Agro-technical protection measures include sowing healthy and fungicide-protected seeds, a proper crop rotation and timely and proper execution of procedures including tillage, fertilization and weed protection. The use of fungicides in our terms of production is certainly necessary no matter whether we sow sensitive or tolerant sugar beet hybrids. However, Cercospora beticola is a parasite which has high possibility to develop resistance to fungicides. The reduced susceptibility or resistance is reflected in the reduced effectiveness of fungicides to control leaf spots and is recorded in almost all countries where this disease occurs. Resistance or reduced susceptibility of these pathogenic fungi to fungicides is related to the mass application of systemic fungicides, particularly from the group of strobilurins. The research was conducted in 2014 and 2015 on Mollic Gleysols and Eutric brown soil. The experiment was set up in a split-block scheme with 14 different variants in 4 repetitions: A. soil type (A1 – Mollic Gleysols ; A2 – Eutric brown soil) ; B. treatment with fungicides (B1 – control ; B2 – one time during vegetation – Rias 300 EC, 0.35 l ha–1 ; B3 – one time during vegetation – Bravo 720 SC, 1.5 l ha–1 ; B4 – one time during vegetation – Sphere 535 SC, 0.35 l ha–1 ; B5 – two times during vegetation – Rias 300 EC, 0.35 l ha–1 + Duett ultra, 0.6 l ha–1 ; B6 – two times during vegetation – Bravo 720 SC, 1.5 l ha–1 + Duett ultra, 0.6 l ha–1 ; B7 – two times during vegetation – Sphere 535 SC, 0.35 l ha–1 + Duett ultra, 0.6 l ha–1). The best results in all investigated parameters were obtained in variant B5 (two times during vegetation – Rias 300 EC, 0.35 l ha–1 + Duett ultra, 0.6 l ha–1) and B6 (two times during vegetation – Bravo 720 SC, 1.5 l ha–1 + Duett ultra, 0.6 l ha–1). In addition to the control variant (B1), the worst results were achieved in variant B4 – one time during vegetation – Sphere 535 SC, 0.35 l ha–1.

cukrová řepa ; Cercospora beticola Sacc. ; strobilurin ; fungicidy ; rezistence ; výnos kořene ; a kvalita

nije evidentirano

engleski

The problem of development of resistance on some fungicide active substances intended for suppressing of Cercospora beticola Sacc.

nije evidentirano

sugar beet ; Cercospora beticola Sacc. ; strobilurin fungicides ; resistance ; root yield and quality

nije evidentirano

Podaci o izdanju

133 (7/8)

2017.

222-226

objavljeno

1210-3306

Povezanost rada

Poljoprivreda (agronomija)

Poveznice
Indeksiranost