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The effect of adjuvants, spray volume and nozzle type on azoxystrobin efficacy against Leptosphaeria maculans and L. biglobosa on winter oilseed rape

100%

Ratajkiewicz H., Kierzek R., Karolewski Z., Wachowiak M.

Journal of Plant Protection Research

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2009

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tom 49

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nr 4

440-445

In two vegetative seasons 2005-2006 azoxystrobin (Amistar 250 SC at the dose of 0.7 dm3/ha) was applied as a spraying treatment at the beginning of plant flowering against stem canker (Leptosphaeria maculans and L. biglobosa) in winter oilseed rape crops. The effect of the following spray application parameters: water volume (200 and 400 l/ha), adjuvant type (Break Thru S 240 - 0.1% and Atpolan 80 EC - 0.5%), and nozzle type (XR11002 - fine droplet size and DB11002 - coarse droplets at 0.4 MPa pressure) on the fungicide efficacy was studied. The results of presented studies indicated that azoxystrobin (Amistar 250 SC) caused a significant decrease of rape infection by stem canker. Addition of adjuvants did not significantly increase the fungicide effectiveness, and sometimes lowered its action (especially after the application of Atpolan 80 EC). The applied spray volumes of water and nozzle type provided an effective protection of oilseed rape against stem canker, however, in some cases the results of field experiments were not significantly different. The best results of the disease casual agent (L. biglobosa) control, statistically proved were shown at the higher spray volume (400 l/ha), regardless of nozzle type (droplet size) and adjuvant application.

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Effect of adjuvants, spray volume and nozzle type on metconazole activity against Leptosphaeria biglobosa and L. maculans during late spring treatments in winter oilseed rape

100%

Karolewski Z., Wachowiak M., Ratajkiewicz H., Kierzek R.

Journal of Plant Protection Research

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2009

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tom 49

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nr 1

113-117

In two seasons 2005-2006 the metconazole (Caramba 60 SL at the dose of 0.75 l/ha) was applicated by spraying at the beginning of flowering against phoma stem canker (Leptosphaeria biglobosa and L. maculans) in winter oilseed rape. The effect of water volume (200 and 400 l/ha), adjuvant type (Break Thru S 240 — 0.1% and Atpolan 80 EC — 0.5%), and nozzle type (XR11002 — fine droplet size and DB11002 — course droplets at pressure 0.4 MPa) on the biological efficacy of fungicide spraying was investigated in the studies. The results showed that adjuvants did not significantly influence biological efficacy of fungicide treatments against L. biglobosa and L. maculans. Generally, control of both pathogens on the leaves and stem did not depend on spray characteristics (nozzle types-droplet size). However, positive effect of air induction nozzles DB 11002 (course spray quality) on fungicide treatments against L. biglobosa, particularly with addition of adjuvant Atpolan 80 EC was observed. Two different volumes of water tested (200 and 400 l/ha) did not influence efficacy of metconazole in control L. maculans and L. biglobosa. The above suggests a possibility of decrease the volume of water used with fungicide to 200 l/ha, without a negative biological effects on fungicidal activity.

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An impact of surface spray and pressing temperature on the properties of high density fibreboards

88%

Sala C. M., Kowaluk G.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2020

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tom 112

Ograniczanie wyników

2 Journal of Plant Protection Research

1 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2 Karolewski Z.

2 Kierzek R.

2 Ratajkiewicz H.

2 Wachowiak M.

1 Kowaluk G.

1 Sala C. M.

1 2020

2 2009

The effect of adjuvants, spray volume and nozzle type on azoxystrobin efficacy against Leptosphaeria maculans and L. biglobosa on winter oilseed rape

Effect of adjuvants, spray volume and nozzle type on metconazole activity against Leptosphaeria biglobosa and L. maculans during late spring treatments in winter oilseed rape

An impact of surface spray and pressing temperature on the properties of high density fibreboards