The study was conducted on a plot of‘4-40’ satsuma mandarin trees located at the Louisiana State University Agricultural Center’s Citrus Research Station, Port Sulphur, LA. Pretreatment mite counts were made 11 Jun, and all treatments were applied 13 Jun with the aid of a FMC model 100 CP airblast sprayer and a tractor speed of 3rd low 1200 RPM to generate an operating pressure of approximately 200 psi. The study consisted of 5 treatments with 10 single tree replications from which mite counts were determined by taking 5 leaves per tree and counting the number of live mites on the right bottom half of the leaf and then doubling the count to obtain the number of mites per leaf. After treatment application mite counts were made at 7, 14, 30, 60, 90, and 120 DAT. All miticide spray solutions were buffered to a pH of approximately 6.0 with the addition of Triton AG-44 M (Latron AG-44 M).
这项研究是在路易斯安那州立大学农业中心位于洛杉矶硫港的柑橘研究站的一块“4-40”萨摩柑树上进行的。6月11日进行预处理螨计数，6月13日使用FMC型号100 CP空气喷射喷雾器，拖拉机转速为3low 1200 RPM，产生约200 psi的操作压力。本研究共分5个处理，10个单树重复，每棵树取5片叶子，计算叶片右下半部的活螨数，然后加倍计数，得到每片叶子的螨数。处理后，分别在7、14、30、60、90和120天进行螨计数。所有杀虫剂喷雾溶液加入Triton AG-44 M (Latron AG-44 M)缓冲至pH约为6.0。
{"title":"Citrus Red Mite Control on ‘4-40’ Satsuma Selection in Louisiana, 1991","authors":"W. J. Bourgeois, D. Pollet","doi":"10.1093/iat/18.1.72a","DOIUrl":"https://doi.org/10.1093/iat/18.1.72a","url":null,"abstract":"\u0000 The study was conducted on a plot of‘4-40’ satsuma mandarin trees located at the Louisiana State University Agricultural Center’s Citrus Research Station, Port Sulphur, LA. Pretreatment mite counts were made 11 Jun, and all treatments were applied 13 Jun with the aid of a FMC model 100 CP airblast sprayer and a tractor speed of 3rd low 1200 RPM to generate an operating pressure of approximately 200 psi. The study consisted of 5 treatments with 10 single tree replications from which mite counts were determined by taking 5 leaves per tree and counting the number of live mites on the right bottom half of the leaf and then doubling the count to obtain the number of mites per leaf. After treatment application mite counts were made at 7, 14, 30, 60, 90, and 120 DAT. All miticide spray solutions were buffered to a pH of approximately 6.0 with the addition of Triton AG-44 M (Latron AG-44 M).","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":"87563050","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}
‘Classic’ eggplant was transplanted 31 May, in Storrs, Connecticut. Plots consisted of 30 plants, 2 ft apart in 3 rows of 10 plants each. Rows were 4 ft apart. Three treatments were replicated 3 times in a randomized complete block design. Asana + Butacide and hydrated lime were applied on 31 May, 7, 14, 21, 28 Jun, 4, 12, and 19 Jul. Upper and lower leaf surfaces of all plants were sprayed with water immediately prior to applying treatments. Water and Asana applications were made with a 3 gal CO2 backpack sprayer operating at 25 psi and delivering 40 gal/acre. Plants were sprayed from the top and from each side, by hand with a single hollow cone nozzle. Hydrated lime was applied with a crank-style duster at 50 lb/acre. All data were collected from the 10 plants in the center row of each plot with the exception of GPA which were counted on 5 leaves on each of 4 center row plants. Plants were rated for percent defoliation at fruit set on 26 Jul. Fruit was harvested, counted and weighed on 9, 16, 23, 29 Aug, 6, 13, and 20 Sep.
{"title":"Eggplant: Hydrated Lime as an Insect Repellent, 1991","authors":"J. Boucher, R. Adams, F. Johnson, R. Packauskas","doi":"10.1093/iat/18.1.131","DOIUrl":"https://doi.org/10.1093/iat/18.1.131","url":null,"abstract":"\u0000 ‘Classic’ eggplant was transplanted 31 May, in Storrs, Connecticut. Plots consisted of 30 plants, 2 ft apart in 3 rows of 10 plants each. Rows were 4 ft apart. Three treatments were replicated 3 times in a randomized complete block design. Asana + Butacide and hydrated lime were applied on 31 May, 7, 14, 21, 28 Jun, 4, 12, and 19 Jul. Upper and lower leaf surfaces of all plants were sprayed with water immediately prior to applying treatments. Water and Asana applications were made with a 3 gal CO2 backpack sprayer operating at 25 psi and delivering 40 gal/acre. Plants were sprayed from the top and from each side, by hand with a single hollow cone nozzle. Hydrated lime was applied with a crank-style duster at 50 lb/acre. All data were collected from the 10 plants in the center row of each plot with the exception of GPA which were counted on 5 leaves on each of 4 center row plants. Plants were rated for percent defoliation at fruit set on 26 Jul. Fruit was harvested, counted and weighed on 9, 16, 23, 29 Aug, 6, 13, and 20 Sep.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"4 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":"90299347","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 GUS-IG13 (X-3G43) (formerly NTN 33893) as seed treatments were compared with carbofuran (Furadan 3 G) and an untreated check for control of RWW in ‘Newbonnet’ and ‘Lemont’ rice. The experimental design was a randomized complete block with 4 replications for each variety. Plot size was 9 rows with 17.8 cm spacing X 4.88 m. Rice was drill-seeded at 123.2 kg seed/ha 28 Apr and emerged 8 May. Propanil and thiobencarb at 3.36 kg (AI)/ha each were applied 18 and 22 May for weed control. Plots were temporarily flooded (flushed) 8 May and permanently flooded 6 Jun. Urea, 151.2 and 201.6 kg/ha, was applied in a 3-way split of 84 and 133.6 kg/ha 6 Jun and 33.6 kg/ha each on 10 and 21 Jul for ‘Newbonnet’ and ‘Lemont’ plots, respectively. Carbofuran was applied with a hand shaker 15 Jun. On 30 Jun and 7 Jul and on 2 and 9 Jul, 5, 10.2 x 10.2 cm (diam by depth) soil cores were removed from each plot of ‘Newbonnet’ and ‘Lemont’, respectively. Soil and plant roots were washed into 40-mesh screens. Screens were immersed in salt water, and RWW immatures were recovered and counted. The center 4 rows of plots were harvested on 8 Sep with a small plot combine. Reported yields were adjusted to 12% moisture.
{"title":"Control of Rice Water Weevil with a Seed Treatment, 1992:","authors":"J. L. Bernhardt","doi":"10.1093/iat/18.1.266","DOIUrl":"https://doi.org/10.1093/iat/18.1.266","url":null,"abstract":"\u0000 Two rates of GUS-IG13 (X-3G43) (formerly NTN 33893) as seed treatments were compared with carbofuran (Furadan 3 G) and an untreated check for control of RWW in ‘Newbonnet’ and ‘Lemont’ rice. The experimental design was a randomized complete block with 4 replications for each variety. Plot size was 9 rows with 17.8 cm spacing X 4.88 m. Rice was drill-seeded at 123.2 kg seed/ha 28 Apr and emerged 8 May. Propanil and thiobencarb at 3.36 kg (AI)/ha each were applied 18 and 22 May for weed control. Plots were temporarily flooded (flushed) 8 May and permanently flooded 6 Jun. Urea, 151.2 and 201.6 kg/ha, was applied in a 3-way split of 84 and 133.6 kg/ha 6 Jun and 33.6 kg/ha each on 10 and 21 Jul for ‘Newbonnet’ and ‘Lemont’ plots, respectively. Carbofuran was applied with a hand shaker 15 Jun. On 30 Jun and 7 Jul and on 2 and 9 Jul, 5, 10.2 x 10.2 cm (diam by depth) soil cores were removed from each plot of ‘Newbonnet’ and ‘Lemont’, respectively. Soil and plant roots were washed into 40-mesh screens. Screens were immersed in salt water, and RWW immatures were recovered and counted. The center 4 rows of plots were harvested on 8 Sep with a small plot combine. Reported yields were adjusted to 12% moisture.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90317732","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 Bt products were evaluated for control PLR larvae of the summer generation. The test orchard was located at the Tree Fruit Research and Extension Center, Wenatchee. Test Trees were 15-year-old spur type ‘Red Delicious’ on dwarfing roots. The orchard was irrigated by over-tree sprinklers on a 14-day schedule. The test design consisted of seven-tree plots replicated five times in randomized complete block. All treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. Dates of different treatments are shown in the table. The 9 Jun application was timed to coincide with predicted beginning of egg hatch. The 15 Jun application was timed to coincide with predicted peak of egg hatch, and the 22 Jun application was timed to coincide with the completion of egg hatch. The post-treatment evaluation was made on 20 Jul when surviving larvae could be easily found at the tips of growing shoots. Each tree was examined for 2 min and the number of active feeding sites (live leafroller larvae) was recorded.
{"title":"Apple, Control of the Pandemis Leafroller with Bacillus Thuringiensis (Bt) Products in Summer, 1992","authors":"J. Brunner, L. O. Smith","doi":"10.1093/iat/18.1.15","DOIUrl":"https://doi.org/10.1093/iat/18.1.15","url":null,"abstract":"\u0000 Three Bt products were evaluated for control PLR larvae of the summer generation. The test orchard was located at the Tree Fruit Research and Extension Center, Wenatchee. Test Trees were 15-year-old spur type ‘Red Delicious’ on dwarfing roots. The orchard was irrigated by over-tree sprinklers on a 14-day schedule. The test design consisted of seven-tree plots replicated five times in randomized complete block. All treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. Dates of different treatments are shown in the table. The 9 Jun application was timed to coincide with predicted beginning of egg hatch. The 15 Jun application was timed to coincide with predicted peak of egg hatch, and the 22 Jun application was timed to coincide with the completion of egg hatch. The post-treatment evaluation was made on 20 Jul when surviving larvae could be easily found at the tips of growing shoots. Each tree was examined for 2 min and the number of active feeding sites (live leafroller larvae) was recorded.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90644768","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}
L. M. Rodriguez, J. Skias, A. Younis, T. E. Reagan
Insecticides were applied to first ratoon sugarcane (4 replications) at Palo Alto Plantation, Donaldsonville, LA, for season-long control of SCB. Each treatment was applied in water using an Ag Cat with swaths of 14.5 m (8 rows) wide delivering 18.7 liters of finished product/hectare. The 1st application was made when 60% of the stalks showed visible internodes, and >5% of stalks sampled contained live larvae present in the leaf sheaths (the Louisiana State University-recommended threshold). The 1st treatment was applied on 28 Jul; the 2nd on Aug 16, when SCB infestation in the Asana XL treatment exceeded the economic threshold. SCB damage was estimated by examining 15 plants at 5 locations in each plot (75 stalks). The number of bored internodes, exit holes and total number of internodes were counted (Oct 9) and statistically analyzed using Analysis of Variance and mean separation by LSD (0.05) tests.
{"title":"Aerial Application Control of the Sugarcane Borer, 1992:","authors":"L. M. Rodriguez, J. Skias, A. Younis, T. E. Reagan","doi":"10.1093/iat/18.1.279a","DOIUrl":"https://doi.org/10.1093/iat/18.1.279a","url":null,"abstract":"\u0000 Insecticides were applied to first ratoon sugarcane (4 replications) at Palo Alto Plantation, Donaldsonville, LA, for season-long control of SCB. Each treatment was applied in water using an Ag Cat with swaths of 14.5 m (8 rows) wide delivering 18.7 liters of finished product/hectare. The 1st application was made when 60% of the stalks showed visible internodes, and >5% of stalks sampled contained live larvae present in the leaf sheaths (the Louisiana State University-recommended threshold). The 1st treatment was applied on 28 Jul; the 2nd on Aug 16, when SCB infestation in the Asana XL treatment exceeded the economic threshold. SCB damage was estimated by examining 15 plants at 5 locations in each plot (75 stalks). The number of bored internodes, exit holes and total number of internodes were counted (Oct 9) and statistically analyzed using Analysis of Variance and mean separation by LSD (0.05) tests.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"146 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90683625","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}
Planting-time treatments of 3 granular soil insecticide products were evaluated on reduced tilled 1st year and continuous corn at the OARDC Western Branch Field Station near South Charleston. Each of the soil insecticides was evaluated at 2 rates. A RCB design with 4 replicates was used. Plots were 27.4 m (90 ft) in length and 4 rows wide at 76.2 cm (30 inch) row spacing. Treatments were applied 5 May at planting time using a John Deere 7000 planter equipped with Noble granular insecticide application equipment. All granular treatments were applied as a band prior to closure by the press wheel. Stand counts were taken 11 Jun on 30.5 m (100 ft) of row. Root systems of 5 plants per plot were rated 7 Aug using the Iowa 1-6 scale. On 22 Oct, plots were machine harvested to determine yield.
{"title":"Evaluation of Soil Insecticides on First Year and Continuous Corn in Ohio, 1992","authors":"H. Willson, J. B. Eisley","doi":"10.1093/iat/18.1.213","DOIUrl":"https://doi.org/10.1093/iat/18.1.213","url":null,"abstract":"\u0000 Planting-time treatments of 3 granular soil insecticide products were evaluated on reduced tilled 1st year and continuous corn at the OARDC Western Branch Field Station near South Charleston. Each of the soil insecticides was evaluated at 2 rates. A RCB design with 4 replicates was used. Plots were 27.4 m (90 ft) in length and 4 rows wide at 76.2 cm (30 inch) row spacing. Treatments were applied 5 May at planting time using a John Deere 7000 planter equipped with Noble granular insecticide application equipment. All granular treatments were applied as a band prior to closure by the press wheel. Stand counts were taken 11 Jun on 30.5 m (100 ft) of row. Root systems of 5 plants per plot were rated 7 Aug using the Iowa 1-6 scale. On 22 Oct, plots were machine harvested to determine yield.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90947184","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 different Bt products were evaluated for their ability to control overwintered OBLR larvae. The test was conducted in two commercial orchards located near Milton-Freewater, OR. Trees in the HOME orchard were 20-year-old spur type ‘Red Delicious’ on dwarfing roots. Trees in the GALA orchard were 3-year-old ‘Gala’ on dwarfing roots. In the HOME orchard the test design consisted of two-tree plots replicated five times in randomized complete blocks. In the GALA orchard the test design consisted of five-tree plots replicated five times in randomized complete blocks. Treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. First application of all treatments was made on 18 Mar, at the half-inch green-tip (HIG) stage of fruit bud development. The second application of the Bt products only was made on 25 Mar at the pink (P) stage of fruit bud development. On 8 Apr each tree was examined and the number of active feeding sites (live leafroller larvae) recorded.
{"title":"Apple, Spring Control of the Oblr with Bacillus Thuringiensis (Bt) Products, 1992","authors":"J. Brunner, L. Smith","doi":"10.1093/iat/18.1.10","DOIUrl":"https://doi.org/10.1093/iat/18.1.10","url":null,"abstract":"\u0000 Three different Bt products were evaluated for their ability to control overwintered OBLR larvae. The test was conducted in two commercial orchards located near Milton-Freewater, OR. Trees in the HOME orchard were 20-year-old spur type ‘Red Delicious’ on dwarfing roots. Trees in the GALA orchard were 3-year-old ‘Gala’ on dwarfing roots. In the HOME orchard the test design consisted of two-tree plots replicated five times in randomized complete blocks. In the GALA orchard the test design consisted of five-tree plots replicated five times in randomized complete blocks. Treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. First application of all treatments was made on 18 Mar, at the half-inch green-tip (HIG) stage of fruit bud development. The second application of the Bt products only was made on 25 Mar at the pink (P) stage of fruit bud development. On 8 Apr each tree was examined and the number of active feeding sites (live leafroller larvae) recorded.","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":"91010606","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 experiment was conducted in a one-acre block of 6-yr-old trees on M7A, which measured 10 ft high and 7.5 ft wide and were planted 18 x 24 ft apart. The experimental design consisted of 4 single-tree plots in a randomized block design, with each replicate surrounded by at least one unsprayed tree on each side. Insecticides were applied to runoff on 7 Jul with an Agrotec handgun sprayer (model no. ASA0287) operated at 100 psi. Other materials applied separately to the entire block throughout the season were Bayleton, Captan, Dodine, Ethrel, Javelin, Kocide, NAA, Nova, Solubor, Streptomycin, Supracide, Tenn-Cop, Topsin-M, and Ziram. RLH [control was evaluated by counting nymphs on the underside of 25 randomly selected leaves per tree.
这个实验是在M7A上一个一英亩的6年树龄的树块上进行的，这些树高10英尺，宽7.5英尺，间隔18 x 24英尺。试验设计采用随机区组设计，包括4个单树样地，每个重复的每侧至少有一棵未喷洒的树。7月7日，使用Agrotec手枪喷雾器(型号:ASA0287)在100 psi下工作。整个季节单独应用于整个街区的其他材料有Bayleton、Captan、Dodine、Ethrel、Javelin、Kocide、NAA、Nova、Solubor、Streptomycin、Supracide、Tenn-Cop、topsinm和Ziram。通过对每棵树随机选择的25片叶子底部若虫的计数来评估RLH[对照]。
{"title":"Rose Leafhopper Control, 1992","authors":"M. L. Day, H. Hogmire, T. Winfield","doi":"10.1093/iat/18.1.15a","DOIUrl":"https://doi.org/10.1093/iat/18.1.15a","url":null,"abstract":"\u0000 This experiment was conducted in a one-acre block of 6-yr-old trees on M7A, which measured 10 ft high and 7.5 ft wide and were planted 18 x 24 ft apart. The experimental design consisted of 4 single-tree plots in a randomized block design, with each replicate surrounded by at least one unsprayed tree on each side. Insecticides were applied to runoff on 7 Jul with an Agrotec handgun sprayer (model no. ASA0287) operated at 100 psi. Other materials applied separately to the entire block throughout the season were Bayleton, Captan, Dodine, Ethrel, Javelin, Kocide, NAA, Nova, Solubor, Streptomycin, Supracide, Tenn-Cop, Topsin-M, and Ziram. RLH [control was evaluated by counting nymphs on the underside of 25 randomly selected leaves per tree.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"31 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72591392","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}
V. M. Sanchez-Valdes, E. Guerrero-Rodríguez, M. A. Lievano-Chirino
The response of potato tuberworm to ten doses of acyl-urea, diflubenzuron and triflumuron was evaluated in a series decreasing in halfs (e.g. 2,000, 1,000, 500 ppm, etc.). Potato tubers were submerged in the desired concentrations, put on paper to dry and then placed in one liter plastic containers. Over each tuber, 10 larvae were placed per replication, with four replicates/dose (40 larvae), and a total of 400 larvae per insecticide trial was used. A water-treated check was used. Larvae were obtained from Navidad, Nuevo Leon, Mexico and were maintained 30 d at 25 ± 2°C. Two samples at 10 and 15 d post-treatment were made to check mortality, and at 30 d for adult survival. The final analysis was based on adults because differences in mortality among stages was low. The mortality data were analyzed by probits to obtain LC50 and LC95 values for each insecticide.
{"title":"Effect of Four Igr's Against the Potato Tuberworm, 1991","authors":"V. M. Sanchez-Valdes, E. Guerrero-Rodríguez, M. A. Lievano-Chirino","doi":"10.1093/iat/18.1.373","DOIUrl":"https://doi.org/10.1093/iat/18.1.373","url":null,"abstract":"\u0000 The response of potato tuberworm to ten doses of acyl-urea, diflubenzuron and triflumuron was evaluated in a series decreasing in halfs (e.g. 2,000, 1,000, 500 ppm, etc.). Potato tubers were submerged in the desired concentrations, put on paper to dry and then placed in one liter plastic containers. Over each tuber, 10 larvae were placed per replication, with four replicates/dose (40 larvae), and a total of 400 larvae per insecticide trial was used. A water-treated check was used. Larvae were obtained from Navidad, Nuevo Leon, Mexico and were maintained 30 d at 25 ± 2°C. Two samples at 10 and 15 d post-treatment were made to check mortality, and at 30 d for adult survival. The final analysis was based on adults because differences in mortality among stages was low. The mortality data were analyzed by probits to obtain LC50 and LC95 values for each insecticide.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74662202","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 in Lincoln, NE on a perennial ryegrass golf course fairway. The turf (99% perennial rye) was maintained at a mowing height of 1.6 cm and thatch accumulation (finger compressed) in the plot area was 0.64 to 1.3 cm. Field conditions at the time of application were: air temperature, 20°C; soil temperature (10-cm depth), 23.9°C; soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.0 to 7.0; water pH, 7.0; soil moisture, 18%. Plots were 3.05 x 3.05 m and the experimental design was a RCB with 4 replications. Insecticides were applied 12 Aug. Treatments were applied with a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and delivering 18.9 liter spray/93 m2. The test area was irrigated prior to applications with 0.64 cm of water and periodically syringed during treatment. Immediately following applications, plots were irrigated with approximately 1.3 cm of water. Treatments were evaluated 21 DAT on 2 Sep by removing from each plot nine, 20.3 cm diam turf-soil cores (0.3 m2 total area) to a depth of 7.6 cm and counting the number of surviving grubs.
{"title":"Biological Control of Annual White Grubs with Entomophagous Nematodes, 1992","authors":"F. P. Baxendale, A. P. Weinhold, R. Gaussoin","doi":"10.1093/iat/18.1.342","DOIUrl":"https://doi.org/10.1093/iat/18.1.342","url":null,"abstract":"\u0000 This study was conducted in Lincoln, NE on a perennial ryegrass golf course fairway. The turf (99% perennial rye) was maintained at a mowing height of 1.6 cm and thatch accumulation (finger compressed) in the plot area was 0.64 to 1.3 cm. Field conditions at the time of application were: air temperature, 20°C; soil temperature (10-cm depth), 23.9°C; soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.0 to 7.0; water pH, 7.0; soil moisture, 18%. Plots were 3.05 x 3.05 m and the experimental design was a RCB with 4 replications. Insecticides were applied 12 Aug. Treatments were applied with a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and delivering 18.9 liter spray/93 m2. The test area was irrigated prior to applications with 0.64 cm of water and periodically syringed during treatment. Immediately following applications, plots were irrigated with approximately 1.3 cm of water. Treatments were evaluated 21 DAT on 2 Sep by removing from each plot nine, 20.3 cm diam turf-soil cores (0.3 m2 total area) to a depth of 7.6 cm and counting the number of surviving grubs.","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":"76985698","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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