Red Norland" potatoes were planted in 25 foot rows on 18 May 92. Plots consisted of a single row treatment. The distance between rows was 72 inches and the distance between plants within the row was 9 inches. The plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. Granular treatments were applied with a small shaker can over top the seed pieces in the furrow. In furrow H20 treatments were applied to the seed at the rate of 20 gal/acre with a 2 gal sprinkle can. Initial treatments were applied at planting with foliar spray treatments of Furadan when necessary. Sprays were applied 18 Jun; 3 and 4 Jul. In evaluating the treatments, direct counts of the number of adults, larvae and egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 3 Aug from 25-ft row.
{"title":"Colorado Potato Beetle Control on Potatoes with in-Furrow Treatments, 1992","authors":"J. Linduska, Marylee Ross, R. Rouse","doi":"10.1093/iat/18.1.144","DOIUrl":"https://doi.org/10.1093/iat/18.1.144","url":null,"abstract":"\u0000 Red Norland\" potatoes were planted in 25 foot rows on 18 May 92. Plots consisted of a single row treatment. The distance between rows was 72 inches and the distance between plants within the row was 9 inches. The plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. Granular treatments were applied with a small shaker can over top the seed pieces in the furrow. In furrow H20 treatments were applied to the seed at the rate of 20 gal/acre with a 2 gal sprinkle can. Initial treatments were applied at planting with foliar spray treatments of Furadan when necessary. Sprays were applied 18 Jun; 3 and 4 Jul. In evaluating the treatments, direct counts of the number of adults, larvae and egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 3 Aug from 25-ft row.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"82 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77423813","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}
Peppers were transplanted on 10 Sep 25 cm apart in 2 rows 12.5 cm to either side of the centerline in plastic-mulched, raised beds on sand soil with seep irrigation. Treatments were replicated 4 times in a randomized complete block design with each treatment plot consisting of 6 m of double-row bed. One week prior to treatment, a single neonate BAW was placed on the center 12 plants in each plot. Treatments were applied with a drop nozzle sprayer using a diaphragm pump driven by a dedicated engine and pulled with an all terracum vehicle. Albuz yellow tip ceramic nozzles delivering 0.45 gpm at the operation pressure of 100 psi were used on a single-row boom. Sprayer configuration was adjusted for adequate coverage, beginning on 10 Oct with 2 over-the-row and 2 side nozzles for the first through fourth application, and adding 2 additional side nozzles with a single overhead for the remaining 3 applications. Delivery rates were 30 gal/acre for the first application, 50 gal/acre for the second through the fourth, and 63 gal/acre for the rest. The surfactant APSA-80 (@0.03%) was added to all 16 treatments and the water control. The NPV formulation, SX-61991, was applied by backpack sprayer because of windy conditions on the second and third application dates, to reduce the risk of cross-plot contamination. Five randomly selected plants from each plot were examined for armyworms 2 days post-treatment. The top 5 leaves of 2 or more growing tips of each of the same plants were evaluated for worm damage. Twenty plants near the center of each plot were randomly selected on 20 Nov and 11 Dec for harvest and evaluation. Pressure was intense during most of the trial with SAW the predominant species. The most significant differences were between chemical and biological treatments. Differences between Bt treatments were less evident, although dose responses were generally consistent for all products.
{"title":"Control of Armyworm on Bell Pepper, 1991","authors":"P. Stansly, B. Cawley","doi":"10.1093/iat/18.1.141","DOIUrl":"https://doi.org/10.1093/iat/18.1.141","url":null,"abstract":"\u0000 Peppers were transplanted on 10 Sep 25 cm apart in 2 rows 12.5 cm to either side of the centerline in plastic-mulched, raised beds on sand soil with seep irrigation. Treatments were replicated 4 times in a randomized complete block design with each treatment plot consisting of 6 m of double-row bed. One week prior to treatment, a single neonate BAW was placed on the center 12 plants in each plot. Treatments were applied with a drop nozzle sprayer using a diaphragm pump driven by a dedicated engine and pulled with an all terracum vehicle. Albuz yellow tip ceramic nozzles delivering 0.45 gpm at the operation pressure of 100 psi were used on a single-row boom. Sprayer configuration was adjusted for adequate coverage, beginning on 10 Oct with 2 over-the-row and 2 side nozzles for the first through fourth application, and adding 2 additional side nozzles with a single overhead for the remaining 3 applications. Delivery rates were 30 gal/acre for the first application, 50 gal/acre for the second through the fourth, and 63 gal/acre for the rest. The surfactant APSA-80 (@0.03%) was added to all 16 treatments and the water control. The NPV formulation, SX-61991, was applied by backpack sprayer because of windy conditions on the second and third application dates, to reduce the risk of cross-plot contamination. Five randomly selected plants from each plot were examined for armyworms 2 days post-treatment. The top 5 leaves of 2 or more growing tips of each of the same plants were evaluated for worm damage. Twenty plants near the center of each plot were randomly selected on 20 Nov and 11 Dec for harvest and evaluation. Pressure was intense during most of the trial with SAW the predominant species. The most significant differences were between chemical and biological treatments. Differences between Bt treatments were less evident, although dose responses were generally consistent for all products.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77504711","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}
Cotton was planted on 15 May in a Marlboro sandy loam soil in Laurinburg, NC. Recommended agronomic practices for fertility and weed control were followed and 0.6 lb (AI)/acre Temik used at planting for thrips. A randomized complete block design with 4 replicates and 6-row (40 inch centers) x 45 ft plots with 10 ft alleys were utilized. Treatments were applied with a backpack CO2-pressurized sprayer calibrated to deliver 8.0 gal/acre total volume at 50 psi with one TX-8 Spraying Systems® nozzle per row. Applications were made on 28 Jul, 4 and 7 Aug and 6 Sep. One hundred squares and bolls per treatment (25/plot) were inspected for damage and live ECB and BW larvae 72 h after the 2nd and 3rd applications. European corn borer main stem tunnels were counted on 100 plants per treatment (25/plot) on 31 Aug. A final 100-boll sample was taken on 22 Sep and inspected for ECB and BW damage. Yield were harvested from the middle 2 rows with a 1-row John Deere mechanical harvester.
{"title":"Efficacy of Selected Pyrethroids and Pyrethroid-Ov1Cide Combinations Against Bollworm and European Corn Borer in Southern North Carolina, 1989","authors":"J. Bacheler, D. Mott","doi":"10.1093/iat/18.1.216","DOIUrl":"https://doi.org/10.1093/iat/18.1.216","url":null,"abstract":"\u0000 Cotton was planted on 15 May in a Marlboro sandy loam soil in Laurinburg, NC. Recommended agronomic practices for fertility and weed control were followed and 0.6 lb (AI)/acre Temik used at planting for thrips. A randomized complete block design with 4 replicates and 6-row (40 inch centers) x 45 ft plots with 10 ft alleys were utilized. Treatments were applied with a backpack CO2-pressurized sprayer calibrated to deliver 8.0 gal/acre total volume at 50 psi with one TX-8 Spraying Systems® nozzle per row. Applications were made on 28 Jul, 4 and 7 Aug and 6 Sep. One hundred squares and bolls per treatment (25/plot) were inspected for damage and live ECB and BW larvae 72 h after the 2nd and 3rd applications. European corn borer main stem tunnels were counted on 100 plants per treatment (25/plot) on 31 Aug. A final 100-boll sample was taken on 22 Sep and inspected for ECB and BW damage. Yield were harvested from the middle 2 rows with a 1-row John Deere mechanical harvester.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"53 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":"77571367","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}
Tests were conducted at the OARDC Western Branch Field Station near South Charleston to evaluate the efficacy of 5 insecticides for control of PLH on 2nd and 3rd cuttings of a 3 year old alfalfa stand. Plots were 13.7 X 15.2 m (45 x 50 ft) with 5 replications per treatment in a randomized complete block design. However, the location of 3rd cutting treatments remained the same as that selected for the 2nd cutting. Treatments were applied on 30 Jun to the 2nd cutting and on 11 Aug to the 3rd cutting with a custom built sprayer having a boom length of 4.6 m (15 ft) and flat spray tip nozzles (Teejet 800VS) mounted at 38.1 cm (15 inch) intervals. The system was calibrated to deliver 280.6 liters/ha (30 gal/ acre) at 30 psi at a tractor speed of 5.6 km/hr (3.5 mi/hr). The 2nd cutting treatment was applied when alfalfa stem length was 43.5 cm (17.1 inches) to evaluate control efficacy in a situation where harvest was delayed but stand was susceptible to very heavy PLH feeding activity. The 3rd cutting treatment was applied when stem length was 27 cm (10.6 inches) following harvest of the 2nd cutting. PLH adult abundance was estimated by talcing 10 pendulum sweeps in each plot within 1 day prior to treatments and 2, 7, and 14 DAT. PLH nymph abundance was estimated 7 and 14 DAT when the stage was present in abundance in the untreated plots. Alfalfa stem length was recorded prior to treatments and at 7 and 14 DAT.
在南查尔斯顿附近的OARDC西部分支野外站进行了试验，评估了5种杀虫剂对3年生紫花苜蓿林分2枝和3枝扦插的防治效果。地块为13.7 X 15.2 m (45 X 50 ft)，每个处理5个重复，采用随机完全区组设计。然而，第三次切割处理的位置与第二次切割选择的位置相同。6月30日至第二次切割，8月11日至第三次切割，使用了一个定制的喷雾器，其臂长4.6米(15英尺)，扁平喷嘴(Teejet 800VS)安装在38.1厘米(15英寸)的间隔上。经过校准，该系统在30 psi的压力下，在5.6 km/hr (3.5 mi/hr)的牵引车速度下，可输送280.6升/ha(30加仑/英亩)的液体。当苜蓿茎长为43.5 cm(17.1英寸)时，进行第二次切割处理，以评估在收获延迟但林分易受非常重的PLH饲养活动影响的情况下的控制效果。第三次扦插处理是在第二次扦插收获后茎长27厘米(10.6英寸)时进行的。通过在治疗前1天和2、7和14天内对每个小区进行10次钟摆扫描来估计PLH成虫的丰度。在未处理的地块中，当阶段大量出现时，PLH若虫的丰度估计为7和14个DAT。在处理前和处理后7、14天分别记录苜蓿茎长。
{"title":"Potato Leafhopper Control in Ohio, 1992","authors":"H. R. Wilson, J. B. Eisley","doi":"10.1093/iat/18.1.190","DOIUrl":"https://doi.org/10.1093/iat/18.1.190","url":null,"abstract":"\u0000 Tests were conducted at the OARDC Western Branch Field Station near South Charleston to evaluate the efficacy of 5 insecticides for control of PLH on 2nd and 3rd cuttings of a 3 year old alfalfa stand. Plots were 13.7 X 15.2 m (45 x 50 ft) with 5 replications per treatment in a randomized complete block design. However, the location of 3rd cutting treatments remained the same as that selected for the 2nd cutting. Treatments were applied on 30 Jun to the 2nd cutting and on 11 Aug to the 3rd cutting with a custom built sprayer having a boom length of 4.6 m (15 ft) and flat spray tip nozzles (Teejet 800VS) mounted at 38.1 cm (15 inch) intervals. The system was calibrated to deliver 280.6 liters/ha (30 gal/ acre) at 30 psi at a tractor speed of 5.6 km/hr (3.5 mi/hr). The 2nd cutting treatment was applied when alfalfa stem length was 43.5 cm (17.1 inches) to evaluate control efficacy in a situation where harvest was delayed but stand was susceptible to very heavy PLH feeding activity. The 3rd cutting treatment was applied when stem length was 27 cm (10.6 inches) following harvest of the 2nd cutting. PLH adult abundance was estimated by talcing 10 pendulum sweeps in each plot within 1 day prior to treatments and 2, 7, and 14 DAT. PLH nymph abundance was estimated 7 and 14 DAT when the stage was present in abundance in the untreated plots. Alfalfa stem length was recorded prior to treatments and at 7 and 14 DAT.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"5 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76413015","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}
Two rates of Orthene 75S and three surfactants were evaluated for mole cricket control on a Bermudagrass fairway at Oak Island Golf Course in Brunswick Co. Plots 45 ft wide X 70 ft long were established in areas where damage was evident. Randomly assigned treatments with three replications were used for the test. Soil had 0.2% humic matter and a pH of 5.9. The plots were pre-irrigated with 0.25 inch of water and treated on 19 Oct. Soil temperature was 68°F, air temperature 60°F, and the chemicals were applied late in the day with a Broyhill® fairway sprayer using 8006 nozzles at 40 psi. The chemicals were not watered in and the night of treatment was cool. Plots were evaluated by taking five random m2 grid samples/replicate. The grid was placed randomly and fresh damage observed in each of the nine subgrids (0 = not damage, 9 = severe damage) was recorded. Data presented are the avg of 15 ratings made/treatment for each sampling date. Evaluations were conducted on 27 Oct (8 DAT) and 6 Nov (18 DAT). All data were transformed X + 0.5. Actual means are presented in the table.
{"title":"Surfactant Evaluation for Mole Cricket Control on Golf Course Fairways, NC, 1992:","authors":"R. Brandenburg, P. Hertl","doi":"10.1093/iat/18.1.308","DOIUrl":"https://doi.org/10.1093/iat/18.1.308","url":null,"abstract":"\u0000 Two rates of Orthene 75S and three surfactants were evaluated for mole cricket control on a Bermudagrass fairway at Oak Island Golf Course in Brunswick Co. Plots 45 ft wide X 70 ft long were established in areas where damage was evident. Randomly assigned treatments with three replications were used for the test. Soil had 0.2% humic matter and a pH of 5.9. The plots were pre-irrigated with 0.25 inch of water and treated on 19 Oct. Soil temperature was 68°F, air temperature 60°F, and the chemicals were applied late in the day with a Broyhill® fairway sprayer using 8006 nozzles at 40 psi. The chemicals were not watered in and the night of treatment was cool. Plots were evaluated by taking five random m2 grid samples/replicate. The grid was placed randomly and fresh damage observed in each of the nine subgrids (0 = not damage, 9 = severe damage) was recorded. Data presented are the avg of 15 ratings made/treatment for each sampling date. Evaluations were conducted on 27 Oct (8 DAT) and 6 Nov (18 DAT). All data were transformed X + 0.5. Actual means are presented in the table.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75984992","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}
Four insecticide treatments were applied to broccoli grown for seed within a fabric-meshed greenhouse of Rogers-NK Seed located near Yuma, AZ. Treatments were applied with a back-pack CO2 sprayer calibrated to deliver 13.8 gal/acre at 30 psi with two T-Jet 23 disc cones and D2 orifice discs on 13 Mar. Plots were 25 ft long X 1 row wide (40 inch) and treatments were replicated four times in a randomized complete block design. Vegetable Oil Concentrate was added to all insecticide treatments at a 1 qt/acre rate. Broccoli was in full bloom when treatments were applied and CA were present in moderate numbers. Plants were sampled in 14, 19 Mar, 2, 10 and 17 Apr with sampling being discontinued as plants were drying and being harvested. Plots were sampled by tapping six inches of flower/seed stalk from three plants over a 6.5 inch wide round plastic bowl, collecting the aphids, which were then frozen and later counted. Heavy rains on 26 Mar prevented a sample during that week. The sample in 14 Mar consisted of examining 30 flower stalks/plot for presence/absence of CA. CA were counted in all samples by GPA were present only in Apr samples.
{"title":"Cabbage and Green Peach Aphid Control on Seed Broccoli, 1992","authors":"M. Rethwisch, M. Shaw, M. Peralta","doi":"10.1093/iat/18.1.90","DOIUrl":"https://doi.org/10.1093/iat/18.1.90","url":null,"abstract":"\u0000 Four insecticide treatments were applied to broccoli grown for seed within a fabric-meshed greenhouse of Rogers-NK Seed located near Yuma, AZ. Treatments were applied with a back-pack CO2 sprayer calibrated to deliver 13.8 gal/acre at 30 psi with two T-Jet 23 disc cones and D2 orifice discs on 13 Mar. Plots were 25 ft long X 1 row wide (40 inch) and treatments were replicated four times in a randomized complete block design. Vegetable Oil Concentrate was added to all insecticide treatments at a 1 qt/acre rate. Broccoli was in full bloom when treatments were applied and CA were present in moderate numbers. Plants were sampled in 14, 19 Mar, 2, 10 and 17 Apr with sampling being discontinued as plants were drying and being harvested. Plots were sampled by tapping six inches of flower/seed stalk from three plants over a 6.5 inch wide round plastic bowl, collecting the aphids, which were then frozen and later counted. Heavy rains on 26 Mar prevented a sample during that week. The sample in 14 Mar consisted of examining 30 flower stalks/plot for presence/absence of CA. CA were counted in all samples by GPA were present only in Apr samples.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"17 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":"79821764","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}
Cabbage was transplanted on 16 Jun at the Vegetable Crops Research Farm near Geneva, NY. Plots consisted of two 10 ft rows on 36 inch centers with 18 inch plant spacing. To insure an adequate population of insects, three plants per replication were inoculated with 200 DBM eggs from our Geneva ‘88 lab colony, the same three plants were inoculated with 75 CL eggs from our Geneva’ 91 colony and ICW populations were natural. Larvae were allowed to reach early third instar before treatments were applied. Treatments were replicated 4 times in a randomized complete block design. A backpack sprayer with a one-row boom, having 3 nozzles per row with HC 12 hollow cone tips, and delivering 38 gal/acre at 40 psi and 2 mph, was used to apply a single application of each treatment. Inoculations were made on 31 Aug. Treatments were applied on 9 Sep and evaluated 16 Sep. Evaluations were made by selecting the three inoculated plants per replication, removing all leaves, and counting the number of live larvae. A two-way ANOVA was used for analysis of Lepidoptera using replicate totals.
{"title":"Comparing New American Cyanamid Products and Standard Insecticides for Control of Lepidoptera on Cabbage, 1992","authors":"A. Shelton, W. Wilsey","doi":"10.1093/iat/18.1.111","DOIUrl":"https://doi.org/10.1093/iat/18.1.111","url":null,"abstract":"\u0000 Cabbage was transplanted on 16 Jun at the Vegetable Crops Research Farm near Geneva, NY. Plots consisted of two 10 ft rows on 36 inch centers with 18 inch plant spacing. To insure an adequate population of insects, three plants per replication were inoculated with 200 DBM eggs from our Geneva ‘88 lab colony, the same three plants were inoculated with 75 CL eggs from our Geneva’ 91 colony and ICW populations were natural. Larvae were allowed to reach early third instar before treatments were applied. Treatments were replicated 4 times in a randomized complete block design. A backpack sprayer with a one-row boom, having 3 nozzles per row with HC 12 hollow cone tips, and delivering 38 gal/acre at 40 psi and 2 mph, was used to apply a single application of each treatment. Inoculations were made on 31 Aug. Treatments were applied on 9 Sep and evaluated 16 Sep. Evaluations were made by selecting the three inoculated plants per replication, removing all leaves, and counting the number of live larvae. A two-way ANOVA was used for analysis of Lepidoptera using replicate totals.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80457655","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}
Two tests were conducted to evaluate the efficacy of selected insecticides against cotton aphids in non-irrigated cotton planted 17 Apr. For both tests, plots consisted of 4 rows (102 cm centers) x 15 m. Treatments were arranged in a randomized complete block design with 4 replications. The test field had been treated previously with Ammo 2.5 EC (0.033 kg [AI]/ha) to stimulate cotton aphid infestations. Insecticides were applied to Test 1 and Test 2 and 18 Jul with a tractor mounted boom equipped with a compressed air system calibrated to deliver 93.6 liters total spray/ha through Teejet X-12 hollow cone nozzles (2/row) at 3.02 kg/cm2. Plots were sampled on 22 (4 DAT) and 25 Jul (7 DAT). Treatment efficacy was evaluated by sampling the plant terminal (all apical shoot growth above and including the first fully expanded leaf). Fifteen and 10 samples on 4 DAT and 7 DAT, respectively, were collected from each plot and held in glass jars. Aphids were washed from the plant foliage onto 300 mesh wire sieves, backwashed onto ruled filter paper (7 cm) and counted using a binocular dissecting scope. These tests received 0.9 cm rainfall on 18 Jul and 1.8 cm rainfall on 19 Jul.
{"title":"Cotton Aphid Control in the Macon Ridge Region of Louisiana, 1991","authors":"B. R. Leonard, J. Graves, D. Long","doi":"10.1093/iat/18.1.239","DOIUrl":"https://doi.org/10.1093/iat/18.1.239","url":null,"abstract":"\u0000 Two tests were conducted to evaluate the efficacy of selected insecticides against cotton aphids in non-irrigated cotton planted 17 Apr. For both tests, plots consisted of 4 rows (102 cm centers) x 15 m. Treatments were arranged in a randomized complete block design with 4 replications. The test field had been treated previously with Ammo 2.5 EC (0.033 kg [AI]/ha) to stimulate cotton aphid infestations. Insecticides were applied to Test 1 and Test 2 and 18 Jul with a tractor mounted boom equipped with a compressed air system calibrated to deliver 93.6 liters total spray/ha through Teejet X-12 hollow cone nozzles (2/row) at 3.02 kg/cm2. Plots were sampled on 22 (4 DAT) and 25 Jul (7 DAT). Treatment efficacy was evaluated by sampling the plant terminal (all apical shoot growth above and including the first fully expanded leaf). Fifteen and 10 samples on 4 DAT and 7 DAT, respectively, were collected from each plot and held in glass jars. Aphids were washed from the plant foliage onto 300 mesh wire sieves, backwashed onto ruled filter paper (7 cm) and counted using a binocular dissecting scope. These tests received 0.9 cm rainfall on 18 Jul and 1.8 cm rainfall on 19 Jul.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81047962","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}
Cotton was planted on 21 May at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each treatment consisted of 3, 25 ft rows with an untreated border row separating treatments. Row spacing was 36 inches. Each treatment was replicated 4 times in a RCB design. Orthene 15 G and Temik 15 G were applied in the furrow before planting using a hand-held shaker. Orthene 75 S foliar sprays were applied on 8 Jun using a single nozzle hollow cone boom backpack sprayer delivering 15 gal water/acre at 40 psi. The second spray for the Orthene 75 S split application treatment was made on 22 Jun. Evaluation criteria consisted of height measurements and percent thrips injury ratings on the dates indicated in the table.
{"title":"Early Season Control of Thrips in Cotton, 1992:","authors":"J. Speese","doi":"10.1093/iat/18.1.254a","DOIUrl":"https://doi.org/10.1093/iat/18.1.254a","url":null,"abstract":"\u0000 Cotton was planted on 21 May at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each treatment consisted of 3, 25 ft rows with an untreated border row separating treatments. Row spacing was 36 inches. Each treatment was replicated 4 times in a RCB design. Orthene 15 G and Temik 15 G were applied in the furrow before planting using a hand-held shaker. Orthene 75 S foliar sprays were applied on 8 Jun using a single nozzle hollow cone boom backpack sprayer delivering 15 gal water/acre at 40 psi. The second spray for the Orthene 75 S split application treatment was made on 22 Jun. Evaluation criteria consisted of height measurements and percent thrips injury ratings on the dates indicated in the table.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"112 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82465480","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}
This study was conducted using treated leaves from a mature ‘Delicious’ orchard at the Tree Fruit Research & Extension Center in Wenatchee, Washington. The four treatments (Agri-Mek 0.15EC 11 g Al/acre; Agri-Mek 0.15EC llg Al/acre plus 0.25% Volck Supreme Oil; Agri-Mek 0.15EC llg Al/acre plus Sylgard; and an untreated check) were applied on 1 Jun. Treatments were applied with a handgun sprayer operated at 250 psi to the point of drip. Ten leaves were collected on each bioassay date. A 2-cm leaf disk was cut from each leaf and floated upside down in a jelly cup of water and cellucotton. Ten adult female TSM were loaded on each leaf disk and evaluated for mortality after 72 h at 25°C. Dead and moribund mites were classed as dead, and mites that were not found on the leaf disk were not included in the analyses. Post-treatment assays were conducted on leaves collected at ca. weekly intervals. Treatment mortality data were corrected for check mortality with Abbott's formula.
这项研究使用了华盛顿州韦纳奇果树研究与推广中心成熟的“美味”果园的处理过的叶子。四种处理(Agri-Mek 0.15EC 11 g Al/亩;Agri-Mek 0.15EC lg Al/acre加0.25% Volck Supreme Oil;Agri-Mek 0.15EC llal /acre + Sylgard;6月1日，使用手持式喷雾器进行处理，喷雾器的压力为250 psi，直至滴注点。每个生物测定日采集10片叶片。从每片叶子上剪下一个2厘米的圆盘，倒挂在盛有水和纤维素的果冻杯中。将10只成年雌性TSM装在每个叶片上，在25°C条件下处理72 h，评估其死亡率。死螨和垂死螨被归类为死螨，未在叶盘上发现的螨不包括在分析中。处理后对每隔约一周采集的叶片进行分析。治疗死亡率数据用雅培公式校正为检查死亡率。
{"title":"Residual Mortauty of Twospotted Spider Mite From Agri-Mek Plus Various Adjuvants, 1992","authors":"E. Beers, A. Anderson","doi":"10.1093/iat/18.1.361a","DOIUrl":"https://doi.org/10.1093/iat/18.1.361a","url":null,"abstract":"\u0000 This study was conducted using treated leaves from a mature ‘Delicious’ orchard at the Tree Fruit Research & Extension Center in Wenatchee, Washington. The four treatments (Agri-Mek 0.15EC 11 g Al/acre; Agri-Mek 0.15EC llg Al/acre plus 0.25% Volck Supreme Oil; Agri-Mek 0.15EC llg Al/acre plus Sylgard; and an untreated check) were applied on 1 Jun. Treatments were applied with a handgun sprayer operated at 250 psi to the point of drip. Ten leaves were collected on each bioassay date. A 2-cm leaf disk was cut from each leaf and floated upside down in a jelly cup of water and cellucotton. Ten adult female TSM were loaded on each leaf disk and evaluated for mortality after 72 h at 25°C. Dead and moribund mites were classed as dead, and mites that were not found on the leaf disk were not included in the analyses. Post-treatment assays were conducted on leaves collected at ca. weekly intervals. Treatment mortality data were corrected for check mortality with Abbott's formula.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81630096","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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