Potato Insect Control, Ft. Collins, Co 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 138-138
Author(s):  
Whitney Cranshaw ◽  
D. Casey Sclar ◽  
Aaron Spriggs ◽  
Jason Bishop
Keyword(s):  
Colorado Potato Beetle ◽  
Green Peach Aphid ◽  
Flea Beetle ◽  
Field Research ◽  
Egg Laying ◽  
Potato Beetle ◽  
Two Samples ◽  
Plant Emergence ◽  
Potato Insect ◽  
The Hill

Abstract Plots were established at the Department of Horticulture Field Research Center; north of Ft. Collins, CO. Planting was done 12 May, establishing a series of 2-row plots, 30-ft in length. Plot design was a RCB with 4 replications. Admire applications were made to the soil along the sides of the hills and incorporated to a depth of 1-2 inches with a hand cultivator on 5 June, shortly after plant emergence. Soil applications of Granusol Magnesium were applied and incorporated into the hill on 24 June and 24 July. All foliar treatments were applied 27 June and 14 July (immediately after plot evaluations) using a CO2 compressed air sprayer with a single flat fan nozzle delivering 20 gal gal/acre at 45 psi in a series of passes that covered the top and both sides of each row. At the time of original treatment Colorado potato beetle mating and egg laying was common, with some recently hatched larvae present. Evaluations of Colorado potato beetle (CPB) larvae were made 30 June and 13 July by counting all larvae on the center 20-ft of each row. Populations dropped sharply after this point, preventing subsequent sampling. Potato flea beetle samples were taken on 4 dates, making 6 sweeps row (12 sweeps/plot) on the first two samples and 8 sweeps/plot on the subsequent samples. Green peach aphid and potato/tomato psyllid were enumerated by counting insects on 35 leaves per plot.

scholarly journals COLORADO POTATO BEETLE AND FLEA BEETLE CONTROL IN EGGPLANT, 2001

2002 ◽  
Vol 27 (1) ◽  
Author(s):  
Kenneth A. Sorensen ◽  
Dennis G. Cooke
Keyword(s):  
Colorado Potato Beetle ◽  
Flea Beetle ◽  
Potato Beetle

scholarly journals COLORADO POTATO BEETLE AND GREEN PEACH APHID CONTROL WITH SEED-PIECE TREATMENTS, 2000

2001 ◽  
Vol 26 (1) ◽  
Author(s):  
P. M. Denke ◽  
S. L. Blodgett ◽  
K. Kephart ◽  
J. Mickelson
Keyword(s):  
Seed Piece ◽  
Colorado Potato Beetle ◽  
Green Peach Aphid ◽  
Potato Beetle ◽  
Aphid Control

scholarly journals RESISTANCE TO THE COLORADO POTATO BEETLE AND GREEN PEACH APHID IN INTERSPECIFIC SOLANUM HYBRIDS.

HortScience ◽  
1990 ◽  
Vol 25 (4) ◽  
pp. 400I-400
Author(s):  
Jim Mooney ◽  
Shelley H. Jansky
Keyword(s):  
Colorado Potato Beetle ◽  
Interspecific Hybrids ◽  
Green Peach Aphid ◽  
Wild Potato ◽  
Norgold Russet ◽  
Feeding Period ◽  
Wild Potato Species ◽  
Potato Beetle ◽  
Feeding Trials ◽  
Diploid Level

Resistance to the Colorado potato beetle (CPB) and green peach aphid (GPA) would be valuable if it could be effectively transferred from wild potato species to the cultivated potato. Eighteen diploid interspecific hybrids have been developed using Solanum tuberosum Gp. Tuberosum haploids (2n = 2x = 24) and the diploid wild species S. berthaultii (ber), S. chacoense (CHC), S. jamesii (jam), and S. tarijense (tar). Twenty-five genotypes per family were screened for resistance to CPB and GPA. Feeding trials were carried out on intact leaves. The degree of resistance to CPB was determined by the stage of instar development and weight of larvae after a four day feeding period; resistance to GPA was evaluated by aphid reproduction and survival after a fifteen day feeding period. Highly CPB or GPA resistant clones, compared to `Norgold Russet',, have been identified thus far. Some clones express high levels of resistance to both CPB and GPA. Crosses between resistant clones and S. tuberosum will be carried out at the diploid level in an attempt to combine resistance with good tuberization qualities.

Efficiency of the Complex Bacterial Preparation Azogran Application in Protecting Potatoes from the Colorado Potato Beetle Depending on the Stage of Its Development

2021 ◽  
Vol 83 (1) ◽  
pp. 3-11
Author(s):  
I.K. Kurdish ◽  
◽  
A.A. Roy ◽  
I.A. Skoroсhod ◽  
◽  
...  
Keyword(s):  
Colorado Potato Beetle ◽  
Culture Medium ◽  
Leaf Surface ◽  
Azotobacter Vinelandii ◽  
Egg Laying ◽  
Bacterial Preparation ◽  
Potato Beetle ◽  
Hydroxyphenylacetic Acid ◽  
Viable Bacteria ◽  
Small Plot

The Colorado potato beetle (Leptinotarsa decemlineana Say) is a particularly dangerous potato phytophage. The aim of this work was to study the effect of complex granulated bacterial preparation Azogran and its components on the spread of the Colorado potato beetle in the potato phytocenosis. Methods. The study was carried out during potato of the Slavyanka variety growing under the conditions of small-plot and laboratory experiments. The complex granulated preparation Azogran was made on the basis of interaction of nitrogen-fixing bacteria Azotobacter vinelandii IMV B-7076, phosphate-mobilizing bacteria Bacillus subtilis IMV B-7023 and clay mineral bentonite. 1 g of the preparation contains more than 108 viable bacteria of each strain. The mass of 1 granule was 0.25 g. The effect of Azogran, its components and 4-hydroxyphenylacetic acid (4-HPAA), a metabolite of B. subtilis IMV B-7023, on the survival of Colorado potato beetle larvae was estimated in laboratory conditions. Results. It was shown that the use of the complex bacterial preparation Azogran, B. subtilis IMV B-7023 strain and its metabolite 4-HPAA in the potato phytocenosis significantly reduces the spread of the Colorado potato beetle imago, as well as the number of egg-laying on the leaf surface of plants. Treatment of eggs clutches of the phytophage with this preparation and its specified components significantly reduces the number of larvae on the leaves. Treatment of 1–4 stages larvae with solutions of 4-HPAA at a concentration of 0.5–50.0 μg/ml, as well as a suspension of B. subtilis ІМV В-7023 bacteria or their culture medium (without cells), leads to significant death of the larvae. Conclusions. The use of the complex bacterial preparation Azogran, as well as its component bacteria B. subtilis IMV B-7023 in the phytocenosis of potatoes stimulates plant growth, significantly reduces the spread of the Colorado potato beetle and the number of eggs clutches on the leaf surface. Treatment of Colorado potato beetle larvae of 1–4 stages of development with a suspension of B. subtilis IMV B-7023 bacteria, as well as their metabolite 4-HPAA leads to the death of more than 65% of larvae. The results obtained indicate that the use of the complex bacterial preparation Azogran is promising for potatoes growing.

scholarly journals Colorado Potato Beetle Control; Admire 2F Soil Application Depth, Big Lake, Mn, 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 148-148
Author(s):  
David M. Noetzel ◽  
Tom Wingard
Keyword(s):  
Seed Piece ◽  
Colorado Potato Beetle ◽  
Soil Application ◽  
Potato Beetle ◽  
Foliar Treatment ◽  
Plant Emergence ◽  
Small Trial ◽  
Application Depth ◽  
Commercial Field

Abstract A small trial was established in an irrigated commercial field to determine efficacy of Admire 2F equivalent dosage with, and at varying distances above, the seed piece. Soils were sandy loams. A plot was a single 25 ft row. Treatments were arranged in an RCB design, replicated 4 times. The field was planted on 5 May, seed pieces uncovered on 11 May, re-covered to appropriate depth and treated with Admire 2F at a soil dosage of 1.3 fl ozl1000 row ft in 40 gal/ acre water. The original 6 deep ridge was then restored. Plant emergence began about 20 May but appeared uneven so % emergence data were recorded. The foliar treatment was delayed until slightly more than 15% larval defoliation was present. Foliar treatment dates were 29 June, 6, 13 & 20 July.

scholarly journals Comparative Efficacy of Common Active Ingredients in Organic Insecticides Against Difficult to Control Insect Pests

Insects ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 614
Author(s):  
Galen P. Dively ◽  
Terrence Patton ◽  
Lindsay Barranco ◽  
Kelly Kulhanek
Keyword(s):  
Colorado Potato Beetle ◽  
Insect Pests ◽  
Green Peach Aphid ◽  
Potato Leafhopper ◽  
Control Efficacy ◽  
Flea Beetles ◽  
Potato Beetle ◽  
Bean Beetle ◽  
Organic Insecticides ◽  
Control Insect

There exists a lack of control efficacy information to enable decision-making about which organic insecticide product works best for a given insect pest. Here, we summarize results of 153 field trials on the control efficacy of common active ingredients in organic insecticides against 12 groups of the most difficult to control insect pests. These trials evaluated primarily the organic products Entrust (spinosad), Azera (pyrethrin and azadirachtin), PyGanic (pyrethrin) and Neemix (azadirachtin), which reduced pest infestations by an overall 73.9%, 61.7%, 48.6% and 46.1% respectively, averaged across all trials. Entrust was the most effective control option for many insect pests, particularly providing >75% control of flea beetles, Colorado potato beetle, cabbageworms and alfalfa weevil, but was relatively ineffective against true bugs and aphids. Azera provided >75% control of green peach aphid, flea beetles, Japanese beetle, Mexican bean beetle, potato leafhopper and cabbageworms. PyGanic was less effective than Entrust and Azera but still provided >75% control of green peach aphid, flea beetles and potato leafhopper. The growth inhibition effects of azadirachtin in Neemix were particularly effective against larvae of Mexican bean beetle and Colorado potato beetle but was generally less effective in trials with insect infestations consisting mainly of adult stages. Those insect pests that were particularly difficult to control included thrips, stinkbugs, cucumber beetles and fruitworms. Several caveats pertaining to the application of the results are discussed.

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