Herbicide residues' changes in wheat samples in late weed control

2006 ◽  
Vol 35 (1) ◽  
pp. 25-31
Author(s):  
Zs. Szentpétery ◽  
Cs. Kleinheincz ◽  
A. Tarnawa ◽  
M. Jolánkai
Keyword(s):  
Weed Control ◽  
Herbicide Residues

Weed control and herbicide residues in onion following use of chlorpropham and cyanazine

1992 ◽  
Vol 35 (4) ◽  
pp. 355-362 ◽  
Author(s):  
Allan Cessna ◽  
Diane Lyse Benoit
Keyword(s):  
Weed Control ◽  
Herbicide Residues

scholarly journals The Impact of Cultivation Management and Weed Control Systems of Very Early Potato on Weed Infestation, Biodiversity, and Health Safety of Tubers

Life ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 826
Author(s):  
Dominika Skiba ◽  
Barbara Sawicka ◽  
Piotr Pszczółkowski ◽  
Piotr Barbaś ◽  
Barbara Krochmal-Marczak
Keyword(s):  
Control Systems ◽  
Weed Control ◽  
Active Substance ◽  
Floristic Composition ◽  
Early Potato ◽  
Early Variety ◽  
Herbicide Residues ◽  
Maximum Residue Level ◽  
Weed Infestation ◽  
The Impact

The aim of the research was to determine the impact of potato cultivation management and weeding systems on weed infestation and to evaluate the possibility of using biomarkers to assess consumer exposure to herbicide residues in potato tubers. The experiment was carried out in 2016–2018 in Central-Eastern Poland. The subject of research was the very early variety Lord. The experiment was established using the randomized block method in a split-plot design. The first order factor was cultivation management: (A) traditional and (B) under polyethylene sheeting (PE-sheeting) put “on flat”. The second-order factors were weed control systems: (a) mechanical (b) to (d)-chemical. The study determined the degree of damage to crops and weeds, fresh and dry weight of weeds, their number and floristic composition, and herbicide residues in tubers and in the soil. The fresh and dry mass of weeds was most effectively limited by mechanical and chemical treatment with the use of a preparation containing linuron. Managing potato cultivation with PE-sheeting and soil herbicides has proven to be safe for very early potato production. Used for pre-emergence care, the preparation containing linuron did not leave even trace amounts of this active substance in the tubers. The determined amount of the active substance fluorochloridon and clomazone was lower than the Maximum Residue Level (MRL) norm in the EU (European Union). As a result, the adopted, innovative management and weeding control systems in the cultivation of early potato varieties can be considered safe for the consumer.

SAINFOIN ESTABLISHMENT AND PRODUCTION ON TRIFLURALIN-TREATED SOILS, AND HERBICIDE RESIDUES IN GREEN FORAGE AND HAY

1986 ◽  
Vol 66 (1) ◽  
pp. 103-110 ◽  
Author(s):  
JOHN WADDINGTON ◽  
ALLAN J. CESSNA ◽  
JAMES R. MOYER ◽  
NEAL W. HOLT
Keyword(s):  
Organic Matter ◽  
Weed Control ◽  
Analytical Method ◽  
Dry Matter ◽  
Background Level ◽  
Western Canada ◽  
Reliable Measurement ◽  
Herbicide Residues ◽  
Residue Levels ◽  
Forage Yields

Sainfoin (Onobrychis viciaefolia Scop.) was grown in soils treated with 1.12 and 2.24 kg a.i./ha of trifluralin at four sites in western Canada. Sainfoin seedling populations were reduced only on a soil very low in both organic matter and clay. Weed control by trifluralin applied at 1.12 kg/ha resulted in dry matter yields equal to those from handweeded plots in both the seedling years and the following year. Forage yields were reduced at one site treated with 2.24 kg/ha of trifluralin. A method for extracting and measuring trifluralin residues in green and dried forage is described. Trifluralin residues in sainfoin forage samples harvested in the fall of the seedling year were not significantly different at three sites from the background level of 0.6 ± 0.4 ppb and were 3.6 ± 0.7 ppb for the fourth site. All the residue levels were below the limit of reliable measurement of the analytical method. It was demonstrated that sainfoin can be established reliably in soils treated with 1.12 kg a.i./ha of trifluralin just prior to seeding, and that trifluralin residues are negligible by the time a harvestable amount of forage has been produced.Key words: Sainfoin, Onobrychis viciaefolia, trifluralin, residues, tolerance, yield

scholarly journals Dust Interferes with Pollen–Stigma Interaction and Fruit Set in Pistachio Pistacia vera cv. Kerman

HortScience ◽  
2019 ◽  
Vol 54 (11) ◽  
pp. 1967-1971 ◽  
Author(s):  
Lu Zhang ◽  
Robert Howard Beede ◽  
Gary Banuelos ◽  
Christopher M. Wallis ◽  
Louise Ferguson
Keyword(s):  
Weed Control ◽  
Fruit Set ◽  
Pollen Viability ◽  
Pistacia Vera ◽  
Embryo Abortion ◽  
Herbicide Residues

Springtime flail mowing of row middles for weed control in California pistachio (Pistacia vera L.) orchards blows dust into the leafless canopy if it occurs during bloom. The effect of dust on pistachio pollination and fruit set is unknown. Rachises were bagged prebloom and hand pollinated with pollen and dust mixtures at 1:0, 1:1, 1:4, 1:16, and 0:1 volume/volume ratios on five successive days. The 2016 and 2017 trials demonstrated that the inflorescences treated with a high pollen:dust ratio (0:1, 1:4, and 1:16) had significantly lower split nut rates (commercially less profitable) compared with low dust ratio tests (1:0 and 1:1). Our results also showed that dust damaged both pollen viability and stigma quality, particularly if contaminated with herbicide residues (GlyStar® Plus and Treevix®). Decreased yield was a function of decreased fruit set; increased embryo abortion, parthenocarpy, or both; and a lower split nut percentage. The GA3 content in flowers of both the pollen and dust treatments was significantly higher than that in nonpollinated flowers, suggesting dust stimulated parthenocarpy, resulting in empty nutshells, “blanks” at harvest.

Weed Management in Small Grains Harvested for Grain

EDIS ◽  
2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Jason Ferrell ◽  
Gregory MacDonald ◽  
Pratap Devkota
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Chemical Control ◽  
Management Practices ◽  
Good Management ◽  
Small Grains ◽  
Crop Competition

Successful weed control in small grains involves using good management practices in all phases of production. In Florida, winter weeds compete with small grains for moisture, nutrients, and light, with the greatest amount of competition occurring during the first six to eight weeks after planting. Weeds also cause harvest problems the following spring when the small grain is mature. This 4-page publication discusses crop competition, knowing your weeds, and chemical control. Written by J. A. Ferrell, G. E. MacDonald, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised May 2020.

Weed Management in Peanuts

EDIS ◽  
2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Pratap Devkota
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Application Rate ◽  
Good Management ◽  
Peanut Production

Successful weed control in peanuts involves use of good management practices in all phases of peanut production. This 11-page document lists herbicide products registered for use in Florida peanut production, their mode of actions group, application rate per acre and per season, and reentry interval. It also discusses the performance of these herbicides on several weeds under Florida conditions. Written by J. A. Ferrell, G. E. MacDonald, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised May 2020.

THE SUCCESS OF THE LUCERNE MESSAGE IN MARLBOROUGH

1981 ◽  
pp. 179-183
Author(s):  
A.J. Cresswell
Keyword(s):  
North America ◽  
Weed Control ◽  
Seed Yield ◽  
Insect Pest ◽  
Fold Increase ◽  
Plant Spacing ◽  
Insect Pest Control ◽  
One Year ◽  
Seed Yields ◽  
New Cultivars

This paper, as well as being a testimonial to the benefit the writer has received from the Grassland Association, shows how the knowledge of scientists has been used to increase lucerne seed yields by methods of growing resistant cultivars especially for seed production as opposed to growing for hay, silage or grazing. It shows how new cultivars can be multiplied quickly by growing two crops in one year, one in each hemisphere, by using low seeding rates, wide plant spacing and very good weed control. Increased flowering of the crop has been achieved by the use of boron and the choice of time of closing; better pollination has been achieved by the use of more efficient bees - two varieties of which have been imported from North America. Weed and insect pest control and the use of a desiccant at harvest are contributing to a four-fold increase in seed yield, which should double again soon,

Small Farm Weed Control

1982 ◽  
Author(s):  
J.A.F. Compton
Keyword(s):  
Weed Control ◽  
Small Farm

EFFECT OF SULFENTRAZONE RATE AND APPLICATION METHOD ON WEED CONTROL AND STUNTING IN FLUE-CURED TOBACCO

2003 ◽  
Vol 46 ◽  
pp. 12-16 ◽  
Author(s):  
L. R. Fisher ◽  
W. D. Smith ◽  
J. W. Wilcut
Keyword(s):  
Weed Control ◽  
Application Method
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