Twelve treatments were applied to evaluate Cooley spruce gall adelgid on heavily infested 6-8 ft Douglas-fir Christmas trees. Treatments were applied on 23 Apr, arranged in a randomized complete block design, replicated four times. Foliar treatments were applied using a Solo Master 412 back pack mist blower operating at full throttle on setting two, at the rate of 150 gal/acre (454 ml/tree). At treatment air temperature was 78°F; 45% RH; and skies were clear. Posttreatment counts were completed on 3 Aug. Each treatment was evaluated by selecting four cardinal locations on each tree at breast height, and counting 50 needles at each location and recording the number of Cooley spruce gall damaged needles. A total of 200 needles was examined per tree and converted to % damaged needles.
{"title":"Spring Management of Cooley Spruce Gall Adelgid with Soap, Oil, Experimental and Conventional Insecticides on Douglas-Fir, in Lehighton, Pa, 1992","authors":"P. R. Heller, R. Walker","doi":"10.1093/iat/18.1.348","DOIUrl":"https://doi.org/10.1093/iat/18.1.348","url":null,"abstract":"\u0000 Twelve treatments were applied to evaluate Cooley spruce gall adelgid on heavily infested 6-8 ft Douglas-fir Christmas trees. Treatments were applied on 23 Apr, arranged in a randomized complete block design, replicated four times. Foliar treatments were applied using a Solo Master 412 back pack mist blower operating at full throttle on setting two, at the rate of 150 gal/acre (454 ml/tree). At treatment air temperature was 78°F; 45% RH; and skies were clear. Posttreatment counts were completed on 3 Aug. Each treatment was evaluated by selecting four cardinal locations on each tree at breast height, and counting 50 needles at each location and recording the number of Cooley spruce gall damaged needles. A total of 200 needles was examined per tree and converted to % damaged needles.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88985875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The study was conducted at the USDA-ARS Irrigated Desert Research Station at Brawley, CA. The experiment was conducted in a randomized complete block design with 4 replications. Cotton seed was planted 13 Mar in 40-inch row spacing (30,000 plants/acre). Each plot was 4 rows wide and 40 ft long. Plots were separated by 4 untreated rows on each side and 10 ft fallow alleys between replications. Temik 15 G and Bay NTN 33893 240 FS were applied on 2 Jul when cotton plants were in the first flower growth stage. Temik soil applications were made at rates of 0.75, 1.50, 2.25, and 3.0 lb (AI)/acre, and chiseled 2.5 inches deep at a distance of 8 inches from plants. Foliar applications of NTN 33893 were applied with a backpack sprayer at 0.23 lb (AI)/acre in 22 gal of spray/acre 4 times at biweekly intervals beginning 2 Jul. Plots were sampled 8 times at weekly intervals from 5 Jul to 20 Aug. Ten leaves numbered 6th or 7th from the top fully expanded leaf on the main stem were collected from 1 of the 2 center rows of each plot on each sampling date. The SPW population was estimated by counting. Third and fourth instars on the underside of two 1.55-inch2 leaf disks from each leaf with the aid of a microscope. Seed cotton was hand harvested from two 13-ft sections of row in each plot on 11 Sep to determine the treatment effects of yields.
{"title":"Sweetpotato Whitefly Control on Cotton, 1991","authors":"C. Chu, T. Henneberry, K. H. Akey","doi":"10.1093/iat/18.1.220a","DOIUrl":"https://doi.org/10.1093/iat/18.1.220a","url":null,"abstract":"\u0000 The study was conducted at the USDA-ARS Irrigated Desert Research Station at Brawley, CA. The experiment was conducted in a randomized complete block design with 4 replications. Cotton seed was planted 13 Mar in 40-inch row spacing (30,000 plants/acre). Each plot was 4 rows wide and 40 ft long. Plots were separated by 4 untreated rows on each side and 10 ft fallow alleys between replications. Temik 15 G and Bay NTN 33893 240 FS were applied on 2 Jul when cotton plants were in the first flower growth stage. Temik soil applications were made at rates of 0.75, 1.50, 2.25, and 3.0 lb (AI)/acre, and chiseled 2.5 inches deep at a distance of 8 inches from plants. Foliar applications of NTN 33893 were applied with a backpack sprayer at 0.23 lb (AI)/acre in 22 gal of spray/acre 4 times at biweekly intervals beginning 2 Jul. Plots were sampled 8 times at weekly intervals from 5 Jul to 20 Aug. Ten leaves numbered 6th or 7th from the top fully expanded leaf on the main stem were collected from 1 of the 2 center rows of each plot on each sampling date. The SPW population was estimated by counting. Third and fourth instars on the underside of two 1.55-inch2 leaf disks from each leaf with the aid of a microscope. Seed cotton was hand harvested from two 13-ft sections of row in each plot on 11 Sep to determine the treatment effects of yields.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90060444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sevin at different treatment schedules were compared to the standard rate and timing of Guthion for control of CM. The test orchard was located at the Tree Fruit Research and Extension Center, Wenatchee. Test trees were 17-year-old non-spur ‘Red Delicious’ and ‘Golden Delicious’. The orchard was irrigated by under-tree sprinklers on a 14-day schedule. The test design consisted of four single-tree replicates in a randomized complete block design. Treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. In all cases the first treatment was applied at the beginning of CM egg hatch, 28 May, 250 degree days following first capture of moths in a pheromone trap. After the first CM generation (16 Jul), 100 fruit from each replicate were examined and the number damaged by CM recorded. At harvest (29 Aug), 200 fruit were picked from each replicate and examined for damage by CM and PLR. CM damage was rated as a “sting” (an unsuccessful entry in the fruit denoted by a scar but no penetration) or a deep entry. Mites were sampled from Jun through Jul. Twenty-five leaves were collected from each tree. In the laboratory leaves were processed through a mite brushing machine and each mite species was counted with aid of a dissecting microscope.
{"title":"Apple, Codling Moth Control with Sevin, 1991","authors":"J. Brunner, L. Smith","doi":"10.1093/IAT/18.1.7","DOIUrl":"https://doi.org/10.1093/IAT/18.1.7","url":null,"abstract":"\u0000 Sevin at different treatment schedules were compared to the standard rate and timing of Guthion for control of CM. The test orchard was located at the Tree Fruit Research and Extension Center, Wenatchee. Test trees were 17-year-old non-spur ‘Red Delicious’ and ‘Golden Delicious’. The orchard was irrigated by under-tree sprinklers on a 14-day schedule. The test design consisted of four single-tree replicates in a randomized complete block design. Treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. In all cases the first treatment was applied at the beginning of CM egg hatch, 28 May, 250 degree days following first capture of moths in a pheromone trap. After the first CM generation (16 Jul), 100 fruit from each replicate were examined and the number damaged by CM recorded. At harvest (29 Aug), 200 fruit were picked from each replicate and examined for damage by CM and PLR. CM damage was rated as a “sting” (an unsuccessful entry in the fruit denoted by a scar but no penetration) or a deep entry. Mites were sampled from Jun through Jul. Twenty-five leaves were collected from each tree. In the laboratory leaves were processed through a mite brushing machine and each mite species was counted with aid of a dissecting microscope.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83016645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. P. Schell, J. Lockwood, Larry D. Debrey, C. Bomar
Dimilin 2F and Sevin XLR were applied to a rangeland site in Platte County, Wyoming. Treatments were randomly assigned to 15, 48.3 acre (19.5 ha) plots, with three replicates. Treatments were aerially applied on 17 Jun. During application the temperature never exceeded 24° C and humidity was low. Grasshopper densities were estimated in each plot by using 27, visualized ft2 samples; species and age composition were determined by taking 50 sweeps with a 30.5 cm diam sweep net. These sampling procedures were conducted seven d prior to treatment and 7, 14, and 21 DAT. Fisher’s protected LSD post-ANOVA test was used to evaluate differences in grasshopper densities at each sampling time. One replicate of Dimilin (0.25 oz) was excluded from analysis due to application error. Cumulative mortality rates were calculated after correcting for mortality and development in the untreated control plots.
{"title":"Evaluation of Very Low Rate Aerial Application of Dimilin for Rangeland Grasshopper Control, 1992:","authors":"S. P. Schell, J. Lockwood, Larry D. Debrey, C. Bomar","doi":"10.1093/iat/18.1.311a","DOIUrl":"https://doi.org/10.1093/iat/18.1.311a","url":null,"abstract":"\u0000 Dimilin 2F and Sevin XLR were applied to a rangeland site in Platte County, Wyoming. Treatments were randomly assigned to 15, 48.3 acre (19.5 ha) plots, with three replicates. Treatments were aerially applied on 17 Jun. During application the temperature never exceeded 24° C and humidity was low. Grasshopper densities were estimated in each plot by using 27, visualized ft2 samples; species and age composition were determined by taking 50 sweeps with a 30.5 cm diam sweep net. These sampling procedures were conducted seven d prior to treatment and 7, 14, and 21 DAT. Fisher’s protected LSD post-ANOVA test was used to evaluate differences in grasshopper densities at each sampling time. One replicate of Dimilin (0.25 oz) was excluded from analysis due to application error. Cumulative mortality rates were calculated after correcting for mortality and development in the untreated control plots.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83080231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Three rates of NTN 33893 240 FS seed treatment were compared to a standard of Disyston 15 G in-furrow for suppression of HF, aphids, and barley yellow dwarf virus (BYDV) symptoms. The test was planted 13 Nov on a Marlboro sandy loam in Barnwell County, SC. The experimental design was a RCB with 5 replicates. The experimental unit was a plot 50 x 5.3 ft (8 rows on 8 inch spacing). Granular Disyston was placed in-furrow with electric Gandy applicators. Seed treatments were made by adding 40-ml total volume dilutions of 6 lb of seed and thoroughly mixing in a plastic bag. HF counts were taken by randomly uprooting 10 plants from each of 4 plots (40 plants/treatment) and examining them in the laboratory for larvae and puparia. Aphids were sampled on 3 Feb by counting aphids on 2, random 6-inch samples per plot in 4 replicates (8/treatment). Aphid counts on 9 Mar were taken by shaking wheat plants from 6 inches of row into a sheet metal sampler, (2 samples/e.u., 8 samples/treatment) which extended beyond the full length of the plants. Specimens which could not be field identified were returned to the laboratory for microscopic examination. BYDV ratings were determined by counting the number of symptomatic flag leaves from four 50-ft rows (200 row ft) per plot (1,000 row ft/treatment). These were converted to % based on 2, random 1 m culm counts per plot. Yields were taken by harvesting the middle 6 rows with an Almaco plot combine.
比较了NTN 33893 240 FS种子处理与Disyston 15g垄作对照对HF、蚜虫和大麦黄矮病毒(BYDV)症状的抑制效果。试验于11月13日在南卡罗来纳州巴恩威尔县万宝路砂壤土上种植。试验设计为RCB, 5个重复。实验单元是一块50 x 5.3英尺(8行，8英寸间距)的地块。粒状Disyston用电动甘迪涂抹器放入犁沟中。种子处理是通过加入40毫升的总体积稀释的6磅种子，并在塑料袋中彻底混合。每4个样地(每处理40株)随机拔除10株，并在实验室检查其幼虫和蛹虫，以测定HF计数。2月3日采集蚜虫，每小区随机抽取2个6英寸样本，分4个重复(8个/处理)。3月9日，将每排6英寸的小麦植株摇入金属片取样器(2个样本/e.u)，进行蚜虫计数。(8个样品/处理)，超出了植株的全长。无法现场鉴定的标本被送回实验室进行显微镜检查。BYDV评级是通过计算每个地块4行50英尺(200行英尺)(1,000行英尺/处理)的症状旗叶数量来确定的。这些数据根据每个地块随机的1百万株数转换为%。采用Almaco地块联合收割机收割中间6行作物。
{"title":"Wheat Seed-Treatment Efficacy Against Hessian Fly and Aphids, 1992:","authors":"J. W. Chapin, James S. Thomas","doi":"10.1093/iat/18.1.293","DOIUrl":"https://doi.org/10.1093/iat/18.1.293","url":null,"abstract":"\u0000 Three rates of NTN 33893 240 FS seed treatment were compared to a standard of Disyston 15 G in-furrow for suppression of HF, aphids, and barley yellow dwarf virus (BYDV) symptoms. The test was planted 13 Nov on a Marlboro sandy loam in Barnwell County, SC. The experimental design was a RCB with 5 replicates. The experimental unit was a plot 50 x 5.3 ft (8 rows on 8 inch spacing). Granular Disyston was placed in-furrow with electric Gandy applicators. Seed treatments were made by adding 40-ml total volume dilutions of 6 lb of seed and thoroughly mixing in a plastic bag. HF counts were taken by randomly uprooting 10 plants from each of 4 plots (40 plants/treatment) and examining them in the laboratory for larvae and puparia. Aphids were sampled on 3 Feb by counting aphids on 2, random 6-inch samples per plot in 4 replicates (8/treatment). Aphid counts on 9 Mar were taken by shaking wheat plants from 6 inches of row into a sheet metal sampler, (2 samples/e.u., 8 samples/treatment) which extended beyond the full length of the plants. Specimens which could not be field identified were returned to the laboratory for microscopic examination. BYDV ratings were determined by counting the number of symptomatic flag leaves from four 50-ft rows (200 row ft) per plot (1,000 row ft/treatment). These were converted to % based on 2, random 1 m culm counts per plot. Yields were taken by harvesting the middle 6 rows with an Almaco plot combine.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83128323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The test orchard consisted of mature ‘Bosc’ pear trees planted on a 7.6 m by 7.6 m spacing. Treatments were applied; 14 Apr (petal fall), 5 May (1st cover), and 9 Jun (2nd cover) to four single tree replicates in a randomized block design. All applications were applied to runoff using an FMC Bean handgun sprayer operating at 300 psi. Additional sprays applied to the entire orchard during the trial were Imidan 50% WP 5.6 kg/ha applied 8 May, 2 Jun, and 2 Jul. Treatments were evaluated biweekly. Samples collected prior to 27 Apr consisted of fruiting spur leaves, and all other samples were made be collecting 15 leaves at random from the tree centers and 15 leaves from the middle of 15 terminal shoots. Arthropods were removed from leaves using a mite brushing machine and PP eggs and nymphs, and TSSM egg and post-egg stages counted with the aid of a dissecting microscope.
{"title":"Pear, Agri-Mek Timing Evaluation, 1992","authors":"P. Vanbuskirk, R. Hilton","doi":"10.1093/iat/18.1.60","DOIUrl":"https://doi.org/10.1093/iat/18.1.60","url":null,"abstract":"\u0000 The test orchard consisted of mature ‘Bosc’ pear trees planted on a 7.6 m by 7.6 m spacing. Treatments were applied; 14 Apr (petal fall), 5 May (1st cover), and 9 Jun (2nd cover) to four single tree replicates in a randomized block design. All applications were applied to runoff using an FMC Bean handgun sprayer operating at 300 psi. Additional sprays applied to the entire orchard during the trial were Imidan 50% WP 5.6 kg/ha applied 8 May, 2 Jun, and 2 Jul. Treatments were evaluated biweekly. Samples collected prior to 27 Apr consisted of fruiting spur leaves, and all other samples were made be collecting 15 leaves at random from the tree centers and 15 leaves from the middle of 15 terminal shoots. Arthropods were removed from leaves using a mite brushing machine and PP eggs and nymphs, and TSSM egg and post-egg stages counted with the aid of a dissecting microscope.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83766372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The experiment was performed with 1-yr-old heifer and steer calves at Laramie, WY, and with 2-yr-old steers at Torrington, WY. Average weights of the animals were 211 and 467 kg, respectively. At Laramie, the cattle were heavily infested with Bovicola bovis. At Torrington, Linognathus vituli, Haematopinus eurysternus and Solenopotes capillatus were the dominant species. Cattle were housed in separate pens in groups of five at both locations. Cattle were ranked according to lice density, and similarly infested cattle were then randomly assigned to one of three treatment groups. Five animals per treatment were used in the study at Laramie and 15 per treatment at Torrington. Hair was parted and lice density was estimated by observing and recording the numbers of lice of each species at sample sites on selected body regions of the host. Body regions examined were; one 5 x 15 cm area on the topline; one 5 x 15 cm area on the withers; two 10 X 15 cm areas surrounding the right and left eyes; two 5 x 10 cm areas on the right and left cheeks; one 5 x 25 cm area on the muzzle; and one 5 x 15 cm area on the dewlap. Each animal was tagged in both ears. Cattle at Torrington were tagged on 27 Dec, and cattle at Laramie were tagged on 19 Feb.
实验在怀俄明州拉勒米的1岁小母牛和阉牛以及怀俄明州托灵顿的2岁阉牛中进行。动物平均体重分别为211公斤和467公斤。在拉勒米，牛身上严重感染了牛乳菌。在托林顿，优势种主要有灰尾绵蝇(Linognathus vituli)、大菱鲆(Haematopinus eurysternus)和毛毛螺线虫(Solenopotes capillatus)。在两个地点，牛以五头为一组被饲养在不同的围栏里。根据虱子密度对牛进行排名，然后将感染相似的牛随机分配到三个治疗组中的一个。在拉勒米的研究中，每次治疗使用5只动物，在托灵顿的研究中，每次治疗使用15只动物。在宿主选定的身体区域取样点，通过观察和记录每个物种的虱子数量来估计虱子密度。检查的身体区域有;背线上一个5 x 15厘米的区域;一个5 × 15厘米的面积在肩部;左右眼周围的两个10 X 15厘米的区域;左右脸颊上两个5 x 10厘米的区域;在枪口上有一个5 x 25厘米的区域;和一个5 × 15厘米的面积在乳头上。每只动物的两只耳朵都被贴上了标签。12月27日在托灵顿对牛进行了标记，2月19日在拉勒米对牛进行了标记。
{"title":"Evaluation of Max-Con® and Optimizer® Ear Tags Applied at 2 Tags Per Animal for Control of Cattle Lice in Wyoming, 1992","authors":"J. Lloyd, R. Kumar, J. W. Waggoner","doi":"10.1093/iat/18.1.357a","DOIUrl":"https://doi.org/10.1093/iat/18.1.357a","url":null,"abstract":"\u0000 The experiment was performed with 1-yr-old heifer and steer calves at Laramie, WY, and with 2-yr-old steers at Torrington, WY. Average weights of the animals were 211 and 467 kg, respectively. At Laramie, the cattle were heavily infested with Bovicola bovis. At Torrington, Linognathus vituli, Haematopinus eurysternus and Solenopotes capillatus were the dominant species. Cattle were housed in separate pens in groups of five at both locations. Cattle were ranked according to lice density, and similarly infested cattle were then randomly assigned to one of three treatment groups. Five animals per treatment were used in the study at Laramie and 15 per treatment at Torrington. Hair was parted and lice density was estimated by observing and recording the numbers of lice of each species at sample sites on selected body regions of the host. Body regions examined were; one 5 x 15 cm area on the topline; one 5 x 15 cm area on the withers; two 10 X 15 cm areas surrounding the right and left eyes; two 5 x 10 cm areas on the right and left cheeks; one 5 x 25 cm area on the muzzle; and one 5 x 15 cm area on the dewlap. Each animal was tagged in both ears. Cattle at Torrington were tagged on 27 Dec, and cattle at Laramie were tagged on 19 Feb.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84646963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
These tests were conducted in irrigated spring wheat and barley in fields located near Billings, MT. Plots were 10 ft wide by 30 ft long and were arranged according to a RCB design having 5 treatments with 3 blocks for wheat and 4 treatments with 3 blocks for barley. Insecticides were applied on 3 Jun with a CO2-powered backpack sprayer equipped with a 10-ft hand held spray boom and Teejet 8001 flat fan nozzles. The sprayer was calibrated to deliver 10.5 gal/acre at 20 psi. Insecticide efficacy was determined by counting the number of CLB larvae on each of 50 randomly selected flag leaves from each treated and untreated replicate. Data were subjected to ANOVA, and treatment means were separated by LSD test.
{"title":"Cereal Leaf Beetle Control in Wheat and Barley, 1992:","authors":"G. Jensen, G. Johnson, M. E. Mclendon","doi":"10.1093/iat/18.1.295","DOIUrl":"https://doi.org/10.1093/iat/18.1.295","url":null,"abstract":"\u0000 These tests were conducted in irrigated spring wheat and barley in fields located near Billings, MT. Plots were 10 ft wide by 30 ft long and were arranged according to a RCB design having 5 treatments with 3 blocks for wheat and 4 treatments with 3 blocks for barley. Insecticides were applied on 3 Jun with a CO2-powered backpack sprayer equipped with a 10-ft hand held spray boom and Teejet 8001 flat fan nozzles. The sprayer was calibrated to deliver 10.5 gal/acre at 20 psi. Insecticide efficacy was determined by counting the number of CLB larvae on each of 50 randomly selected flag leaves from each treated and untreated replicate. Data were subjected to ANOVA, and treatment means were separated by LSD test.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87229571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The efficacy of Dipel ES at selected rates was compared to a recommended rate of Larvin and an untreated control for soybean looper control at the Macon Ridge Branch of the Northeast Research Station near Winnsboro, LA. The test consisted of a randomized block design with 4 replications. Plots were 5 rows (1.02 m centers) by 9.0 m of soybeans in the R5 growth stage planted 18 Jun. Treatments were applied with a tractor mounted boom equipped with a compressed air delivery system calibrated to deliver 93.6 liters/ha at 2.8 kg/cm2 through 2 TX-8 hollow cone nozzles equally spaced per row. Insecticides were applied on 1 Sep and treatments were evaluated at 2 and 7 DAT using 2 samples of 20 sweeps with a standard 38.2 cm diam sweep net. The plots received 3.0 cm rainfall on 2 Sep and a trace amount of rainfall on 3 Sep.
在洛杉矶温斯伯勒附近的东北研究站梅肯岭分站，将Dipel ES在选定剂量下的效果与Larvin的推荐剂量和未经处理的大豆环虫防治对照进行了比较。试验采用随机区组设计，共4个重复。在6月18日种植的R5生育期，种植5行(中心1.02米)× 9.0米的大豆。施用时使用拖拉机悬挂式抽油杆，该抽油杆配有压缩空气输送系统，每行间隔2个TX-8空心锥形喷嘴，以2.8 kg/cm2的速度输送93.6升/公顷的空气。9月1日施用杀虫剂，在第2和第7天使用标准直径38.2 cm的扫网进行2次扫网，共20次。9月2日降雨量3.0 cm, 9月3日有微量降雨。
{"title":"Soybean Looper Control with Dipel Es, 1992:","authors":"C. A. White, B. R. Leonard, P. Clay","doi":"10.1093/iat/18.1.276","DOIUrl":"https://doi.org/10.1093/iat/18.1.276","url":null,"abstract":"\u0000 The efficacy of Dipel ES at selected rates was compared to a recommended rate of Larvin and an untreated control for soybean looper control at the Macon Ridge Branch of the Northeast Research Station near Winnsboro, LA. The test consisted of a randomized block design with 4 replications. Plots were 5 rows (1.02 m centers) by 9.0 m of soybeans in the R5 growth stage planted 18 Jun. Treatments were applied with a tractor mounted boom equipped with a compressed air delivery system calibrated to deliver 93.6 liters/ha at 2.8 kg/cm2 through 2 TX-8 hollow cone nozzles equally spaced per row. Insecticides were applied on 1 Sep and treatments were evaluated at 2 and 7 DAT using 2 samples of 20 sweeps with a standard 38.2 cm diam sweep net. The plots received 3.0 cm rainfall on 2 Sep and a trace amount of rainfall on 3 Sep.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86981290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The experimental design was a randomized complete block with 31 insecticide treatments and a control replicated 4 times. Single row plots were 16.6 m in length. Granular insecticides were applied with cone belt distributors mounted on a Halm Hi-boy. Application date was Jul 2. Three days prior to insecticide application 6 black headed ECB egg masses were infested in marked plants for later evaluation. On Jul 29, 10 marked plants in each replicate were dissected from tassel to ground, examined and the number of corn borer cavities recorded.
{"title":"Control of European Corn Borer in Whorl Stage Corn, 1992","authors":"J. Witkowski","doi":"10.1093/iat/18.1.213a","DOIUrl":"https://doi.org/10.1093/iat/18.1.213a","url":null,"abstract":"\u0000 The experimental design was a randomized complete block with 31 insecticide treatments and a control replicated 4 times. Single row plots were 16.6 m in length. Granular insecticides were applied with cone belt distributors mounted on a Halm Hi-boy. Application date was Jul 2. Three days prior to insecticide application 6 black headed ECB egg masses were infested in marked plants for later evaluation. On Jul 29, 10 marked plants in each replicate were dissected from tassel to ground, examined and the number of corn borer cavities recorded.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90674832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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