SELECTIVE CONTROL OF FALSE CLEAVERS IN RAPESEED WITH BENAZOLIN

1983 ◽  
Vol 63 (2) ◽  
pp. 497-501 ◽  
Author(s):  
P. A. O’SULLIVAN
Keyword(s):  
Ethyl Ester ◽  
Brassica Campestris ◽  
Field Conditions ◽  
Emulsifiable Concentrate ◽  
Powder Formulation ◽  
Wettable Powder ◽  
Degree Of Control ◽  
Leaf Whorl ◽  
The One ◽  
Galium Spurium

Under field conditions, control of false cleavers (Galium spurium L.) in rapeseed (Brassica campestris L.) with three formulations (dimethylamine solution, ethyl ester emulsifiable concentrate, or ethyl ester wettable powder) of benazolin at 0.5 kg/ha was good. The ester formulations provided better control of false cleavers than the dimethylamine. There were no differences in degree of control following application of the dimethylamine formulation at the one-, three- or five-leaf whorl in the field. Under greenhouse conditions control of false cleavers and tolerance of rapeseed to benazolin dimethylamine at 0.25–0.75 kg/ha at the one-, two- or three-leaf whorl was good. Slight to moderate rapeseed injury in the form of stunting or thinning was observed 2 wk following application of benazolin under field conditions. The dimethylamine and emulsifiable concentrate formulations caused more injury than the wettable powder formulation. At harvest, these injury symptoms had disappeared. Control of false cleavers with benazolin did not result in an increase in yields of rapeseed over a weedy control.Key words: False cleavers, rapeseed, benazolin

Compatibility of Diclofop and BAS 9052 with Bentazon

Weed Science ◽  
1982 ◽  
Vol 30 (5) ◽  
pp. 458-462 ◽  
Author(s):  
James R. Campbell ◽  
Donald Penner
Keyword(s):  
Glycine Max ◽  
Field Experiments ◽  
Field Studies ◽  
Propanoic Acid ◽  
Grain Yields ◽  
Emulsifiable Concentrate ◽  
Powder Formulation ◽  
Wettable Powder ◽  
Annual Grasses ◽  
Soybean Plants

BAS 9052 {2-[1-(ethoxyimino)-butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one} effectively controlled annual grasses in soybean [Glycine max(L.) Merr.] alone or in combination with bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide] in greenhouse and field experiments. The activity of diclofop {2-[4-(2,4-dichlorophenoxy)phenoxy] propanoic acid} on annual grasses was reduced if combined with bentazon in a tank mixture. The wettable powder formulation of bentazon, as well as a day temperature of 30 C, slightly reduced the antagonistic interaction from that of the emulsifiable concentrate formulation of bentazon or a day temperature of 15 C. In greenhouse studies ‘Corsoy’ soybean plants were injured by the diclofop-bentazon combination. In field studies, however, the injury was not sufficient to reduce grain yields.

The susceptibility of Glossina pallidipes Austen (Diptera: Glossinidae) to insecticide deposits on targets

1985 ◽  
Vol 75 (3) ◽  
pp. 451-458 ◽  
Author(s):  
S. J. Torr
Keyword(s):  
Glossina Pallidipes ◽  
Dry Season ◽  
The Sun ◽  
Wet Season ◽  
Emulsifiable Concentrate ◽  
Aqueous Suspensions ◽  
Wettable Powder

AbstractStudies were made of the susceptibility of wild-caught females of Glossina pallidipes Austen to deposits of DDT, dieldrin and deltamethrin on cotton canvas and Terylene netting. Aqueous suspensions of 3% dieldrin wettable powder, 3% dieldrin emulsifiable concentrate, 5·0% DDT wettable powder and 0·0625% deltamethrin flowable concentrate, were sprayed on the canvas at 0·36% litre/m2 Over 95% of the flies resting for 45 s on fresh deposits of these insecticides died within 72 h. Deposits of dieldrin, DDT and deltamethrin exposed to the sun during 140 days of the dry season produced mortalities of 100, 0 and 10% compared with 100, 75 and 100% for shaded deposits. The concentration of dieldrin and deltamethrin on exposed canvas was about 1% that on shaded canvas, but dieldrin produced photodieldrin upon exposure to the sun. Flies colliding with Terylene netting that had been immersed in 0·75–6·0% suspensions of dieldrin wettable powder and 0·01–0·1% suspensions of deltamethrin flowable concentrate produced mortalities of 100%. Deltamethrin deposits were resistant to weathering by rain, but dieldrin deposits were not. It is suggested that deltamethrin flowable concentrate should be used during the wet season and that dieldrin wettable powder should be used during the dry season. Dieldrin sprayed on an electrocuting target reduced the catch, but deltamethrin did not.

The Development of artificially introduced Infestations of Aphidius granarius, Marsh., under field Conditions

1946 ◽  
Vol 36 (3) ◽  
pp. 291-295 ◽  
Author(s):  
Don R. Arthur
Keyword(s):  
Field Conditions ◽  
The South ◽  
South Wales ◽  
Degree Of Control ◽  
Artificial Introduction

It has been found to be expedient to determine the development of the Braconid parasite, Aphidius granarius, Marsh., under field conditions, following its artificial introduction in order to supplement the previous observations of the writer (Arthur 1944, 1945). The aim of the presaent work was to determine the degree of control likely to be achieved by the introduction of this parasite to corn crops known to harbour heavy Aphid infestations but lacking the corresponding paraponding parasitism. The work was undertaken during 1943–44 at Margam Cowbridge, and Ammanford, three widely separated locations in the south wales Area.

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

1961 ◽  
Vol 41 (2) ◽  
pp. 407-412 ◽  
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.

Infrared Spectrophotometric Method for Analysis of Guthion Insecticide: Collaborative Study

1979 ◽  
Vol 62 (6) ◽  
pp. 1220-1221
Author(s):  
Charles J Cohen ◽  
◽  
J B Audino ◽  
M Byrne ◽  
G S Grimes ◽  
...  
Keyword(s):  
Spectrophotometric Method ◽  
Collaborative Study ◽  
Absorbance Measurement ◽  
Powder Formulation ◽  
Azinphos Methyl ◽  
Wettable Powder ◽  
Liquid Concentrate

Abstract A collaborative study on the assay of Guthion (azinphos methyl) has been conducted by 10 laboratories. Data were obtained on a 2 Ib/gal. liquid concentrate and a 50% wettable powder formulation. The procedure specifies extraction and/or dilution followed by infrared absorbance measurement at 654 cm-1. The method has been adopted as official first action.

Control of Aster (Aster subspicatus) and Birdsfoot Trefoil (Lotus corniculatus) in Cranberries (Vaccinium macrocarpon) with Napropamide

Weed Science ◽  
1982 ◽  
Vol 30 (4) ◽  
pp. 369-371
Author(s):  
Azmi Y. Shawa
Keyword(s):  
Lotus Corniculatus ◽  
Vaccinium Macrocarpon ◽  
Birdsfoot Trefoil ◽  
Powder Formulation ◽  
Wettable Powder ◽  
Late Application ◽  
Earlier Application

Napropamide [2-(a-naphthoxy)N,N-diethylpropionamide] applied to cranberry (Vaccinium macrocarponAit.) as a granular or wettable powder formulation at 20 kg/ha in March 1978 controlled aster (Aster subspicatusNees) and birdsfoot trefoil (Lotus corniculatusL.) without any phytotoxicity to ‘McFarlin’ cranberry vines. Earlier application in February was ineffective, and late application in April injured the vines. Napropamide 10% granular applied at 14 kg/ha in March 1979 controlled aster 90% and birdsfoot trefoil 70%, and the 50% wettable powder formulation controlled aster 90% and birdsfoot trefoil 80%. Applications of granular napropamide at 12 kg/ha in March of 1979 or 1980 controlled both weeds 70%.

CORROSION INHIBITORS IN OIL AND GAS PRODUCING EQUIPMENT

1972 ◽  
Vol 12 (1) ◽  
pp. 99
Author(s):  
Roy D. Stanphill ◽  
R.W. Gibson
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Field Conditions ◽  
Screening Tests ◽  
Inhibitor Efficiency ◽  
Organic Corrosion Inhibitor ◽  
The One ◽  
Specific Formulation ◽  
Selection Of

Most internal corrosive conditions found in oil and gas producing equipment can be controlled through the use of corrosion inhibitors. Organic corrosion inhibitor chemistry is now well known and inhibition mechanisms are understood. There are many good inhibitor formulations available today; so many, in fact, that the producer is faced with the problem of selecting the one best suited to his requirements. Many people depend solely on various types of comparative inhibitor efficiency tests in the laboratory to evaluate and select inhibitors for use under field conditions. These tests are important as relative screening tests, but the selection of a carefully planned application program for the specific formulation is equally important.

Toxicities of Insecticide Residues on Loblolly Pine Foliage to Leaffooted Pine Seed Bug Adults (Heteroptera: Coreidae)2

1990 ◽  
Vol 25 (1) ◽  
pp. 3-9 ◽  
Author(s):  
John C. Nord
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
High Volume ◽  
Emulsifiable Concentrate ◽  
Insecticide Residues ◽  
Adult Females ◽  
Knockdown Effect ◽  
Wettable Powder ◽  
Organophosphorous Insecticides ◽  
Pinus Taeda L

Fourteen commercial and four experimental formulations of insecticides, when applied to loblolly pine, Pinus taeda L., foliage in a simulated high volume spray, varied in their residual contact toxicities to adult leaffooted pine seed bugs, Leptoglossus corculus (Say). Deltamethrin emulsifiable concentrate (EC), the most toxic insecticide tested, was 7 times as toxic to adult females as the standard, azinphosmethyl EC. Azinphosmethyl wettable powder (WP) was slightly more toxic to females than the EC at LC90; all other insecticides were less toxic than azinphosmethyl EC to females (half or less). Azinphosmethyl EC, deltamethrin EC, permethrin (Pounce) EC, and phosmet WP were equally toxic to both sexes, while permethrin (Ambush) EC and fenvalerate EC were both more toxic to males than females. Azinphosmethyl WP was more toxic to females than males. Several of the insecticides, including propoxur WP, malathion EC and chlorpyrifos EC, had relatively low residual contact toxicities but were very toxic to seed bug adults as fumigants. The pyrethroids permethrin, deltamethrin and fenvalerate had a relatively rapid knockdown effect, in contrast to the slower-acting organophosphorous insecticides.

Reducing losses of surface-sown seed due to harvesting ants

1979 ◽  
Vol 19 (101) ◽  
pp. 706 ◽  
Author(s):  
MH Campbell ◽  
AR Gilmour
Keyword(s):  
Rhizobium Meliloti ◽  
New South ◽  
Untreated Seed ◽  
Powder Formulation ◽  
South Wales ◽  
Wettable Powder ◽  
Oil Formulation ◽  
Treated Seed ◽  
Ant Nest ◽  
Number Of Seeds

Four experiments were carried out at Orange, New South Wales, in 1978 to test the effect of coating seeds with insecticides on their removal by seed harvesting ants (Pheidole sp.). Treated or untreated seeds of Phalaris aquatica were placed 10 cm from the entrance to an ant nest and the number of seeds taken by ants noted daily. Further experiments tested the effect of coating seeds with insecticides on the germination of P. aquatica and Medicago sativa and on the viability of rhizobia applied to the seed. Permethrin, at 1.50 and 2.25 g a.i. kg-1 seed and bendiocarb at 0.75, 1.50 and 2.25 g a.i. kg-1 seed significantly reduced the rate of removal of seed by ants when compared with the rate of removal of untreated seed. Ants removed untreated seed at > 150 seedsinest day-1 while treated seed was removed at an average of 5 seedslnest day-1 over a 14 day period. The wettable powder formulation of permethrin was as effective as the miscible oil formulation. The activity of ants from nests that took treated seed was reduced by the higher rates of bendiocarb, but not affected by permethrin and the low rate of bendiocarb when compared with the activity of ants from nests that took untreated seed. The miscible oil formulation of permethrin reduced the rate of germination of P. aquatica, but the wettable powder formulation of both permethrin and bendiocarb had no deleterious effect on germination. Neither permethrin nor bendiocarb had deleterious effects on the survival of Rhizobium meliloti or R. trifolii.

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