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Determination of optimal doses of glyphosate for controlling weeds at several stages in southwestern Buenos Aires province (Argentina)

100%

Bentivegna D. J., Moyano G. L., Daddario J. F. F., Tucat G.

Journal of Plant Protection Research

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2017

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tom 57

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nr 4

Efficient weed management is essential for avoiding competition for water, light, and nutrient resources in semiarid zones. Chemical weed control with glyphosate was evaluated on perennial wall-rocket (Diplotaxis tenuifolia), artichoke thistle (Cynara cardunculus), slender wild oat (Avena barbata), and perennial ryegrass (Lolium perenne). Plants at early, middle and advanced vegetative stages were used in this study. Glyphosate potassium salt was applied at rates of 0.0675 (1/16x), 0.135 (1/8x), 0.27 (1/4x), 0.54 (1/2x), 1.08 (x) and 2.16 (2x) kg acid equivalent (ae) ⋅ ha–1. Glyphosate combined with 2,4-D amine salt was evaluated at rates of 1.08 kg ae ⋅ ha–1 and 0.53 kg active ingredient (ai) ⋅ ha–1, respectively. The volume of the spray was 100 l ⋅ ha–1 with 86 droplets ⋅ cm–2 and a Volume Median Diameter (VMD) of 421.19 μm. In general, all the tested weeds were controlled with a quarter of the label rate. Three sizes of tested plants were controlled in a similar way at the same glyphosate dose rate. Moreover, the addition of 2,4-D to glyphosate did not produce an increase in the control of broadleaf weeds. The results showed that glyphosate was effective in controlling the tested weed species, including low application rates for all the growth stages in the southwestern Buenos Aires province.

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Optymalizacja stosowania herbicydow w systemach chemicznej ochrony buraka cukrowego

80%

Domaradzki K.

Progress in Plant Protection

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2007

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tom 47

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nr 3

64-73

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Optymalne nawozenie azotem nowych odmian srednioskrobiowych ziemniaka na glebach srednio zwiezlych

80%

Bernat E.

Ziemniak Polski

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2001

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nr 1

9-13

4

Optymalizacja dawek herbicydów w pszenicy jarej i jęczmieniu jarym

70%

Paradowski A., Piertyga J., Matysiak K.

Progress in Plant Protection

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2010

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tom 50

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nr 4

The research was carried out in 2007–2009 in the Institute of Plant Protection – National Research Institute in Poznań. Six field trials were carried out on spring wheat and spring barley in two sites of Poland. The aim of experiments was an evaluation of efficacy of some herbicides applied at full (recommended) doses and reduced doses (½ and ¼ of full dose). The following active substances were used: 2,4-D, MCPA, fluroxypyr, amidosulfuron and tribenuron-methyl. Applied herbicides used at reduced did not effectively the number of weeds however they had a positive effect on weed weight reduction. Yield of spring cereals from all treated plots was higher as compared to untreated ones. The amount of yield obtained after full doses of herbicides application (except MCPA) was significantly higher comparing to untreated plots. No significant differences was recorded between treated plots. The obtained results showed the possibility of weed controlling at lower doses of herbicides, according to proecological directions protection of natural environment as well as integrated pest management.

Ograniczanie wyników

2 Progress in Plant Protection

1 Journal of Plant Protection Research

1 Ziemniak Polski

1 Bentivegna D. J.

1 Bernat E.

1 Daddario J. F. F.

1 Domaradzki K.

1 Matysiak K.

1 Moyano G. L.

1 Paradowski A.

1 Piertyga J.

1 Tucat G.

1 2017

1 2010

1 2007

1 2001

Determination of optimal doses of glyphosate for controlling weeds at several stages in southwestern Buenos Aires province (Argentina)

Optymalizacja stosowania herbicydow w systemach chemicznej ochrony buraka cukrowego

Optymalne nawozenie azotem nowych odmian srednioskrobiowych ziemniaka na glebach srednio zwiezlych

Optymalizacja dawek herbicydów w pszenicy jarej i jęczmieniu jarym