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1

Effect of adjuvants on biological efficacy of sulfosulfuron and propoxycarbazone-sodium for weed control in winter wheat and carryover effects

100%
Adamczewski K., Paradowski A.
Journal of Plant Protection Research
|
2004
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tom 44
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nr 4
Biological efficacy of herbicides: propoxycarbazone-sodium (Attribut 70 WG) and sulfosulfuron (Apyros 75 WG) applied with adjuvants was estimated in the field, greenhouse and laboratory experiments. An addition of adjuvants to herbicides Attribut 70 WG and Apyros 75 WG had a positive influence on physical characteristics of tank mixture, herbicidal effect, and the increase of winter wheat grain yield. Ammonium nitrate used as an adjuvant showed the weakest effect. The lowest grain yield was obtained after using the preparations Attribut 70 WG and Apyros 75 WG without adjuvant. Theoil adjuvants, Adbios 85 SL, Aero 030 SL, Atpolan 80 EC and Olbras 88 EC influenced in a similar manner the activity of tested herbicides. Obtained herbicidal effect, the amount of yield and elements of yield structure were differentiated after joint application of herbicides with adjuvants. The herbicides protected plantations of winter wheat against couch grass (Agropyron repens) during the whole vegetative season. However the herbicide Attribut 70 WG was more effective in controlling regrowth of couch grass after harvest, as compared to Apyros 75 WG. On the other hand, Apyros 75 WG controlled somewhat better broadleaf weeds. Also differences in carryover effect occurred. On the sites after propoxycarbazone–sodium application winter oilseed rape, spring oilseed rape and sugar beet should not be cultivated. On the sites after cereals that were protected against weeds with sulfosulfuron only cultivation of winter oilseed rape should not be recommended, however spring oilseed rape and sugar beet can be grown.
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of nozzle types and adjuvants on the leaf coverage and biological efficacy of fungicides in potato

84%
Kierzek R., Wachowiak M.
Journal of Plant Protection Research
|
2003
|
tom 43
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nr 2
3

Biological efficacy of tank mixtures of acaricides and fungicides applied for controlling spider mites [Tetranychus spp.] on greenhouse crops of cucumber and tomato

84%
Szwejda J.
Vegetable Crops Research Bulletin
|
1999
|
tom 51
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of air induction nozzle and oil adjuvant on spray retention and weed control

84%
Kierzek R.
Journal of Plant Protection Research
|
2000
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tom 40
|
nr 2
In greenhouse trials in 1998-1999, the effects of using new spray techniques on the activity of two herbicides for broad-leaved weeds control were examined. Also retention of spray solution containing herbicides with and without addition of oil adjuvant on Chenopodium album and Sinapsis alba leaves was measured. Results showed that air induction and convcntional flat fan nozzle gave similar control of tested plants, except Chenopodium album control where fine sprays applied with conventional flat fan nozzle improved efficacy comparcd with very course spray obtained with air induction nozzle. Also results showed that oil adjuvant addition cnhanced biological efficacy for all nozzles, regardless of using herbicide and controlled plant species. Droplet size was the most important factor determining spray retention and activity of herbicides. Efficacy of spray retention depends on the wetting characteristics of the plant, spray application and solution factors.
5

Spray deposit, spray loss and biological efficacy of chemicals applied with different spraying techniques in black currants

67%
Doruchowski G., Labanowska B., Goszczynski W., Godyn A., Holownicki R.
Electronic Journal of Polish Agricultural Universities. Series Agricultural Engineering
|
2002
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tom 05
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nr 2
A directed air-jet sprayer (SEPIA) was compared with a conventional radial flow sprayer (TERMIT) to determine possible control of spider mites (Tetranychus urticae Koch) and currant rust (Cronartium ribicola J. C. Fisher) on black currants when using spray volumes 260, 400 and 600 dm3 ha-1 and different dose rates of chemicals. The Cumulative Infestation Index (CII) for spider mite and percentage of infected leaves for currant rust were evaluated to determin the biological efficacy of applications. The spray deposition across the bushes and spray loss to the soil and to the air were assessed in order to compare the quality of treatments. The efficacy of pest and disease control was reduced for the lower chemical dose rates. Both the sprayers produced similar deposits within currant bushes, however, the directed air-jet sprayer caused considerably lower spray loss than did the conventional sprayer.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of adjuvants on biological efficacy of fenoxaprop-P-ethyl for grass weed control in cereals

67%
Adamczewski K.
Journal of Plant Protection Research
|
2002
|
tom 42
|
nr 1
Field experiments were conducted to determine the influence of adjuvants on fenoxaprop-P-ethyl bioefficacy against wind grass (Apera spica-venti), wild oats (Avena fatua) and barnyard grass (Echinochloa crus-galli). The commercial product Puma Universal 069 EW, which contains 69 g/l of fenoxaprop-P-ethyl, was applied with different adjuvants in springtime in winter barley, winter triticale, winter wheat and spring wheat. The adjuvants have improved efficacy of Puma Universal 069 EW. Mineral paraffin oil (Atpolan 80 EC) was the most effective adjuvant.
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