Oil dispersion with abamectin as active ingredient

Abamectin was developed as an insecticide, nematocide and acaricide for use on a variety of agricultural and horticultural crops. The products with this active ingredient can be found on the market mostly formulated as emulsifiable concentrate (EC). Usually producers recommend using the EC formulation of abamectin together with some kind of adjuvants (natural oils) to improve efficacy of the active ingredient. To overcome the efficacy problem we tried to formulate the active ingredient abamectin as oil dispersion (OD). Oil dispersion, preferably based on naturally derived oils could improve pesticide efficacy. This type of pesticide formulation contains oil instead of water as in classical suspension concentrate and typically has better retention and coverage. In the case of abamectin, in this investigation soybean oil was used with the mixture of different nonionic emulsifiers. Content of abamecetin in formulation was 1.8 %. The developed formulation was tested for few important parameters. The obtained physicochemical properties for the above mentioned formulation have shown that it is stable and could be used in plant protection.

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Effect of Hydrophilic-Lipophilic Balance (HLB) Values of Surfactant Mixtures on the Physicochemical Properties of Emulsifiable Concentrate Formulations of Difenoconazole

Journal of Applied Life Sciences International ◽

10.9734/jalsi/2019/v22i430135 ◽

2020 ◽

pp. 1-10

Author(s):

Walaa El-Sayed ◽

Tahany G. M. Mohammad

Keyword(s):

Physicochemical Properties ◽

Active Ingredient ◽

Storage Stability ◽

Chemical Properties ◽

Surfactant Mixtures ◽

Emulsifiable Concentrate ◽

Hydrophilic Lipophilic Balance ◽

Physical Tests ◽

The Stability ◽

Physical And Chemical

This study was designed to investigate the effect of hydrophilic-lipophilic balance (HLB) values of different surfactant mixtures on the physicochemical properties of emulsifiable concentrate formulations of difenoconazole. Physical tests of emulsion characteristics and storage stability studies were performed for the different samples to predict the stability of these formulations. Different parameters such as active ingredient content, pH, refractive index, surface tension, viscosity, flash point, persistent foam was determined for the prepared samples. The results showed that difenoconazole could be formulated as a stable emulsifiable concentrate by using a mixture of surfactants at HLB values 9.7, 11.9, 12.5 and 13.1. The storage stability test showed that the decomposition rate of the active ingredient content of difenoconazole in different stable formulations was within the acceptable limits of FAO Specifications. The physical and chemical properties of the stable formulations fulfilled the requirements of EC formulation.

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Outcome of the consultation with Member States and EFSA on the basic substance application for sodium hydrogen carbonate for use in plant protection as a fungicide for the control of mildews on a range of horticultural crops, apple scab and for post‐harvest control of storage diseases of various fruits

EFSA Supporting Publications ◽

10.2903/sp.efsa.2015.en-719 ◽

2015 ◽

Vol 12 (1) ◽

Author(s):

Keyword(s):

Sodium Hydrogen Carbonate ◽

Plant Protection ◽

Apple Scab ◽

Member States ◽

Storage Diseases ◽

Post Harvest ◽

Horticultural Crops ◽

Basic Substance ◽

Sodium Hydrogen ◽

Hydrogen Carbonate

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Effect of Oil Content and pH on the Physicochemical Properties of Corn Starch-Soybean Oil Composites

Cereal Chemistry ◽

10.1094/cchem.2003.80.2.154 ◽

2003 ◽

Vol 80 (2) ◽

pp. 154-158 ◽

Cited By ~ 4

Author(s):

G. A. Garzón ◽

C. S. Gaines ◽

A. Mohamed ◽

D. E. Palmquist

Keyword(s):

Physicochemical Properties ◽

Soybean Oil ◽

Oil Content ◽

Corn Starch

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Influence of the selected physicochemical properties of the active substances of plant protection products on the results of their model exposure assessment in the surface water compartment

10.5004/dwt.2021.27623 ◽

2021 ◽

Vol 234 ◽

pp. 124-135

Author(s):

Dorota Sobczak ◽

Igor Kondzielski ◽

Marta Kijenska ◽

Barbara Gworek

Keyword(s):

Surface Water ◽

Physicochemical Properties ◽

Exposure Assessment ◽

Plant Protection ◽

Plant Protection Products ◽

Water Compartment ◽

Active Substances

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THE CONTROL OF THE APPLE APHID ON DWARF APPLE TREES WITH BARK APPLICATIONS OF DIMETHOATE

Canadian Journal of Plant Science ◽

10.4141/cjps61-054 ◽

1961 ◽

Vol 41 (2) ◽

pp. 407-412 ◽

Cited By ~ 5

Author(s):

D. P. Pielou

Keyword(s):

Active Ingredient ◽

Good Control ◽

Basal Part ◽

Effective Control ◽

Single Application ◽

Apple Trees ◽

Emulsifiable Concentrate ◽

Aphis Pomi ◽

Wettable Powder ◽

Excellent Control

Very effective control of the apple aphid, Aphis pomi DeG., on dwarf apple trees, has been obtained by two paintings of an undiluted emulsifiable concentrate of dimethoate (30 per cent active ingredient) on the basal part of the trunk of the tree. Approximately 2 millilitres are applied per tree, and application is made with a 1-inch paint brush around the trunk over a distance of approximately 12 inches. A single application in early July, at a time when the seasonal upsurge of aphids is beginning, gave excellent control for 3 to 4 weeks, even where conditions for reinfestation were favourable. A second application at the end of that period ensured full seasonal control. Almost equally good control was obtained by diluting the concentrate with an equal volume of water. At greater dilutions less effective control resulted. The use of a slurry made from dimethoate, 50 per cent wettable powder, in place of the emulsion, was reasonably effective but slower in action.

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Gamma Radiation as a Potential Phytosanitary Squash Treatment for the Control of Anastrepha grandis (Macquart) (Diptera: Tephritidae)

Annual Research & Review in Biology ◽

10.9734/arrb/2021/v36i430360 ◽

2021 ◽

pp. 19-31

Author(s):

Fernando Berton Baldo ◽

Anna Lucia Casañas Haasis Villavicencio ◽

Flávio Luis Schmidt ◽

Adalton Raga

Keyword(s):

Gamma Radiation ◽

Physicochemical Properties ◽

Fruit Production ◽

Radiation Doses ◽

Total Acidity ◽

Cucurbita Moschata ◽

Horticultural Crops ◽

Eggs And Larvae ◽

Third Instar Larvae

Fruit flies (Diptera: Tephritidae) are the primary pests of horticultural crops worldwide, causing both direct and indirect damage to the fruit production, including Anastrepha grandis (Macquart, 1846), which exclusively infests Cucurbitaceae fruit. Dose-response tests were used to examine the effects of gamma radiation exposure on 24 – 48 h old eggs and third instar larvae, both in vitro and in Atlas squashes (Cucurbita moschata). The following physicochemical properties of Atlas squashes exposed to gamma radiation were evaluated: titratable total acidity, sugar, pH, external colouration, and texture. It was found that under in vitro conditions, a 20.0 Gy dose of gamma radiation was able to prevent larval eclosion, but a 200 Gy dose was necessary to prevent emergence after the exposure of third instar larvae. In Atlas squashes, 200 and 250 Gy doses of gamma radiation were able to prevent the emergence of A. grandis adults from eggs and larvae, respectively. The radiation doses estimated by Probit 9 to prevent emergence from squashes infested with eggs and third instar larvae were 257.13 Gy and 270.25 Gy respectively. The use of gamma radiation did not significantly affect the physicochemical properties of Atlas squashes, which suggested that gamma radiation may represent a potentially useful technique for the quarantine control of A. grandis in cucurbits.

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Effect of frying on physicochemical properties of sesame and soybean oil blend

Journal of Applied and Natural Science ◽

10.31018/jans.v13i3.2744 ◽

2021 ◽

Vol 13 (3) ◽

pp. 820-829

Author(s):

Meenakshi Garg ◽

Surabhi Wason ◽

Prem Lata Meena ◽

Rajni Chopra ◽

Susmita Dey Sadhu ◽

...

Keyword(s):

Physicochemical Properties ◽

Soybean Oil ◽

Peroxide Value ◽

Seed Oil ◽

Sesame Seed ◽

Acid Value ◽

Sesame Oil ◽

Oil Blends ◽

Sesame Seed Oil ◽

Oil Blend

Most common cooking oil, such as soybean oil, can not be used for high-temperature applications, as they are highly susceptible to oxidation. Sesame seed oil rich in natural antioxidants provides high oxidative stability. Therefore, blending sesame oil with soybean oil offer improved oxidative stability. This study aims to determine the effect of frying on the physicochemical properties of sesame and soyabean oil blend. Soybean oil (SO) was blended with sesame seed oil (SSO) in the ratio of A-40:60, B-60:40 and C-50:50 so as to enhance its market acceptability. The changes occurring in soybean and sesame seed oil blend during repeated frying cycles were monitored. The parameters assessed were: Refractive index, specific gravity, viscosity, saponification value, free fatty acid (FFA) , peroxide value, and acid value. Fresh and fried oil blends were also characterised by Fourier Transform Infrared Spectroscopy (FTIR). No significant changes were observed for refractive index and specific gravity values in oil blends. Viscosity of blend B blend was the least, making it desirable for cooking purposes. However, FFA, acid value and peroxide value increased after each frying cycle. The increment of FFA and AV was found low for blend A (10% and 10%,) than blend B (27%,13%) and blend C (13%,13%). The peroxide value of all samples was within the acceptable range. The results of the present study definitely indicated that blending sesame oil with soybean oil could produce an oil blend which is economically feasible and provide desirable physicochemical properties for cooking purposes.

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Comparison of Several Sulfluramid Bait Formulations for Control of the Red Imported Fire Ant (Hymenoptera: Formicidae)2

Journal of Entomological Science ◽

10.18474/0749-8004-27.1.50 ◽

1992 ◽

Vol 27 (1) ◽

pp. 50-55 ◽

Cited By ~ 4

Author(s):

W. A. Banks ◽

A. S. Las ◽

C. T. Adams ◽

C. S. Lofgren

Keyword(s):

Soybean Oil ◽

Active Ingredient ◽

Solenopsis Invicta ◽

Field Tests ◽

Fire Ant ◽

Red Imported Fire Ant ◽

Population Index ◽

Solenopsis Invicta Buren ◽

Imported Fire Ant ◽

Control Equivalent

Various bait formulations containing 0.3% or 0.6% of the fluoroaliphatic sulfone, sulfluramid, were evaluated for control of the red imported fire ant, Solenopsis invicta Buren, in field tests in Florida and Georgia. No significant differences were indicated in the effectiveness of sulfluramid baits containing 19.4, 24.4, 29.4 or 29.7% once-refined soybean oil; all gave control equivalent to that given by the hydramethylnon (Amdro®) standard in all tests. Sulfluramid baits were slightly more effective when applied in spring or summer than in late fall. Although higher rates were slightly more effective, differences in rate of application of formulated bait or active ingredient did not significantly affect effectiveness of the treatments in any given test. Rates of 2.52 - 13.44 g/ha of active ingredient or 0.84 to 1.68 kg/ha of formulated bait resulted in population index reductions of 80–99 percent.

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