Efficacy of planting time insecticide treatments was evaluated against OT injury in cotton planted in eastern VA. The cotton was planted 1 May with 36-inch row spacing. In-furrow (IF) treatments were applied into the seed furrow at planting, granules using a tractor-mounted Noble applicator, liquids using a CO2 pressurized tractor-mounted sprayer calibrated to deliver 5 gal/acre at 24 psi through 1 SS8001E nozzle mounted just above planter disks and turned parallel to the row to deliver spray fan into the seed furrow. Seed treatments were applied by gently rolling seeds in a plastic bag containing product until seeds were evenly coated. A randomized complete block design was used with 4 replicates; plots were 4 rows by 40 ft. Treatments were evaluated by determining plant injury based on a 0-10 scale where 0 = no CT injured leaves and 10 = 100 percent leaves injured. Data were analyzed using ANOVA and LSD procedures.
{"title":"Planting Time Treatments for Control of Onion Thrips in Cotton, 1992","authors":"W. W. Harrison-Bryan, D. Herbert","doi":"10.1093/iat/18.1.225","DOIUrl":"https://doi.org/10.1093/iat/18.1.225","url":null,"abstract":"\u0000 Efficacy of planting time insecticide treatments was evaluated against OT injury in cotton planted in eastern VA. The cotton was planted 1 May with 36-inch row spacing. In-furrow (IF) treatments were applied into the seed furrow at planting, granules using a tractor-mounted Noble applicator, liquids using a CO2 pressurized tractor-mounted sprayer calibrated to deliver 5 gal/acre at 24 psi through 1 SS8001E nozzle mounted just above planter disks and turned parallel to the row to deliver spray fan into the seed furrow. Seed treatments were applied by gently rolling seeds in a plastic bag containing product until seeds were evenly coated. A randomized complete block design was used with 4 replicates; plots were 4 rows by 40 ft. Treatments were evaluated by determining plant injury based on a 0-10 scale where 0 = no CT injured leaves and 10 = 100 percent leaves injured. Data were analyzed using ANOVA and LSD procedures.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80033461","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}
Treatments were applied on 20 Jul using a CO2 powered backpack sprayer calibrated to deliver 9.9 gal of finished spray per acre through 8001 nozzle tips at 40 psi. The plots, which were located in Warren County, were 8 rows wide (38 inch on center) by 50 ft long, arranged in a randomized complete block with 4 replications. Counts were made 3 and 7 DAT by searching the terminal area of 25 plants per plot for larvae; 4 randomly chosen squares from each plant were examined for damage determination. A total of 0.2 inches of rain fell on the plots approximately 60 hr posttreatment. Pretreatment infestation level within the test area was 18% eggs and 26% small larvae. Of 25 larvae collected from check plots and adjacent untreated areas at 3 DAT, 92% were tobacco budworms.
{"title":"Control of Bollworm/Budworm Complex in Mississippi Cotton, Trial I, 1992","authors":"B. Layton, Michael S. Howell, Bob Head","doi":"10.1093/iat/18.1.237","DOIUrl":"https://doi.org/10.1093/iat/18.1.237","url":null,"abstract":"\u0000 Treatments were applied on 20 Jul using a CO2 powered backpack sprayer calibrated to deliver 9.9 gal of finished spray per acre through 8001 nozzle tips at 40 psi. The plots, which were located in Warren County, were 8 rows wide (38 inch on center) by 50 ft long, arranged in a randomized complete block with 4 replications. Counts were made 3 and 7 DAT by searching the terminal area of 25 plants per plot for larvae; 4 randomly chosen squares from each plant were examined for damage determination. A total of 0.2 inches of rain fell on the plots approximately 60 hr posttreatment. Pretreatment infestation level within the test area was 18% eggs and 26% small larvae. Of 25 larvae collected from check plots and adjacent untreated areas at 3 DAT, 92% were tobacco budworms.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84421640","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}
Transplants were set 10 Feb, 15 inches apart on 8-inch-high by 30-inch wide beds of EauGallie fine sand covered with black polyethylene mulch. Each plot consisted of a single 15 ft row with rows on 5 ft centers. Plants were grown staked and were irrigated by seepage subirrigation. Insecticide treatments were replicated 4 times in a randomized complete block design, applied with a 2.5 gal, hand-held CO2-powered sprayer on 19 Mar, 3, 9, 16, 23 Apr, 8, 15, 21 and 29 May. The sprayer was operated at 60 psi and delivered 60 gal/acre using a single nozzle fitted with a D-5 disk and #45 core. On 2 and 4 Jun, the number of leafrolls produced by larvae of the tomato pinworm was counted in a 4 minute search of each plot. On 4 Jun, the number of small (<0.5 inch long) and large (≥0.5 inch long Liriomyza) spp. leafmines was counted in a 1 minute search of selected treatments. Fruit was harvested on 14 and 26 May and the number and weight of undamaged fruit and the number and weight of fruit damaged by noctuid larvae [primarily the southern armyworm] were determined.
{"title":"Leafminer, Armyworm and Tomato Pinworm Control on Fresh Market Tomatoes In West-Central Florida, Spring 1992","authors":"D. Schuster","doi":"10.1093/iat/18.1.180","DOIUrl":"https://doi.org/10.1093/iat/18.1.180","url":null,"abstract":"\u0000 Transplants were set 10 Feb, 15 inches apart on 8-inch-high by 30-inch wide beds of EauGallie fine sand covered with black polyethylene mulch. Each plot consisted of a single 15 ft row with rows on 5 ft centers. Plants were grown staked and were irrigated by seepage subirrigation. Insecticide treatments were replicated 4 times in a randomized complete block design, applied with a 2.5 gal, hand-held CO2-powered sprayer on 19 Mar, 3, 9, 16, 23 Apr, 8, 15, 21 and 29 May. The sprayer was operated at 60 psi and delivered 60 gal/acre using a single nozzle fitted with a D-5 disk and #45 core. On 2 and 4 Jun, the number of leafrolls produced by larvae of the tomato pinworm was counted in a 4 minute search of each plot. On 4 Jun, the number of small (<0.5 inch long) and large (≥0.5 inch long Liriomyza) spp. leafmines was counted in a 1 minute search of selected treatments. Fruit was harvested on 14 and 26 May and the number and weight of undamaged fruit and the number and weight of fruit damaged by noctuid larvae [primarily the southern armyworm] were determined.","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":"84549699","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 in a 0.5 hectare block of alternating 4 row sets of‘Bartlett’ and ‘Anjou’ pear trees. The block was divided into 3 treatments, replicated twice in a randomized block design. The three treatments were different timings of Agri-Med and oil applications: petal fall (PF) on 2 May, 1st cover (FC) on 24 May, and 2nd cover (SC) on 22 Jun. Applications were made using a commercial air-carrier sprayer set to deliver 1870.6 liters/ha. Agri-Med was applied at each timing at the rate of 1462 ml/ha plus 0.25% (4.7 liters/ha) Orchex 796 horticultural spray oil. Additional insecticide sprays applied to the entire orchard during the trial were Guthion 35 WP 3.9 kg/ha applied 28 May, 3 Jul, and 31 Jul. Densities of the TSSM and PP were estimated by randomly selecting 20 mature and 20 younger leaves from each variety biweekly, brushing the samples and recording the stages and numbers of each species with the aid of a dissecting microscope.
{"title":"Pear, Agri-Mek Timing Evaluation, 1991","authors":"R. Hilton","doi":"10.1093/iat/18.1.57","DOIUrl":"https://doi.org/10.1093/iat/18.1.57","url":null,"abstract":"\u0000 The study was conducted in a 0.5 hectare block of alternating 4 row sets of‘Bartlett’ and ‘Anjou’ pear trees. The block was divided into 3 treatments, replicated twice in a randomized block design. The three treatments were different timings of Agri-Med and oil applications: petal fall (PF) on 2 May, 1st cover (FC) on 24 May, and 2nd cover (SC) on 22 Jun. Applications were made using a commercial air-carrier sprayer set to deliver 1870.6 liters/ha. Agri-Med was applied at each timing at the rate of 1462 ml/ha plus 0.25% (4.7 liters/ha) Orchex 796 horticultural spray oil. Additional insecticide sprays applied to the entire orchard during the trial were Guthion 35 WP 3.9 kg/ha applied 28 May, 3 Jul, and 31 Jul. Densities of the TSSM and PP were estimated by randomly selecting 20 mature and 20 younger leaves from each variety biweekly, brushing the samples and recording the stages and numbers of each species with the aid of a dissecting microscope.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84937348","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, California, in a randomized complete block design with four replications. Seed was planted 20 Aug at the rate of three seeds/hill with hills spaced 30 inches within a row. Missing hills were replanted on 9 Sep. Each plot consisted of two rows spaced 40 inches wide. Rows were 20 ft long. Plots were partially isolated by 7-ft wide corridors of fallow ground between plots and 7-ft fallow alleys separating experimental blocks. Treatments were (1) cantaloupe seeds treated with NTN 33893 at 0.10 lb Al/lb of seed, (2) NTN 33893 treated seeds followed, after plant emergency, by a foliar spray of 1% liquid detergent, (3) a foliar spray of NTN 33893 at 0.13 lb Al/acre, (4) a foliar spray of Monitor at 0.5 lb Al/acre and (5) untreated plots. Foliar sprays of each material were made in 27 gal of water/acre on 10 Sep with a high clearance sprayer with a modified spray boom having two nozzles at the top of plants and four nozzles at the bottom of plants per row. Bottom nozzles were oriented at 30° angles to improve underleaf coverage. Five leaves numbered 2 or 3 from the apical bud were sampled from each hill in each plot on days 6 and 13 after foliar sprays. Large third and fourth instar nymphs were counted on each side of one 1.55-inch2 leaf disk/leaf and recorded separately for each surface. The effect of the treatments and SPW infestations on plant stand establishment were determined by counting the number of seed hill replants from the two 20 ft rows in each plot.
{"title":"Sweetpotato Whitefly Control on Cantaloupe, 1991","authors":"C. Chu, T. Henneberry, D. Akey","doi":"10.1093/iat/18.1.116","DOIUrl":"https://doi.org/10.1093/iat/18.1.116","url":null,"abstract":"\u0000 The study was conducted at the USDA-ARS Irrigated Desert Research Station at Brawley, California, in a randomized complete block design with four replications. Seed was planted 20 Aug at the rate of three seeds/hill with hills spaced 30 inches within a row. Missing hills were replanted on 9 Sep. Each plot consisted of two rows spaced 40 inches wide. Rows were 20 ft long. Plots were partially isolated by 7-ft wide corridors of fallow ground between plots and 7-ft fallow alleys separating experimental blocks. Treatments were (1) cantaloupe seeds treated with NTN 33893 at 0.10 lb Al/lb of seed, (2) NTN 33893 treated seeds followed, after plant emergency, by a foliar spray of 1% liquid detergent, (3) a foliar spray of NTN 33893 at 0.13 lb Al/acre, (4) a foliar spray of Monitor at 0.5 lb Al/acre and (5) untreated plots. Foliar sprays of each material were made in 27 gal of water/acre on 10 Sep with a high clearance sprayer with a modified spray boom having two nozzles at the top of plants and four nozzles at the bottom of plants per row. Bottom nozzles were oriented at 30° angles to improve underleaf coverage. Five leaves numbered 2 or 3 from the apical bud were sampled from each hill in each plot on days 6 and 13 after foliar sprays. Large third and fourth instar nymphs were counted on each side of one 1.55-inch2 leaf disk/leaf and recorded separately for each surface. The effect of the treatments and SPW infestations on plant stand establishment were determined by counting the number of seed hill replants from the two 20 ft rows in each plot.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76680413","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}
Experimental BAS 300 001 and BAS 300 111, alone and tank mixed with ATPLUS 411 spray oil, were compared to Vendex for efficacy against CRM. Treatments were randomly assigned to single tree plots and replicated 4 times in a 30-yr-old grapefruit orchard on 16 x 22 ft spacing. Trees were sprayed on 4 Jun to foliar runoff (ca. 3.0 gal/tree) by handgun using a portable Hypro 5200 high pressure sprayer operating at 200 psi. Post spray counts were made at 7 days and at ca. 2-week intervals thereafter. At each count date, 13 fruit per replicate (52/treatment) were randomly selected at arms length in the tree canopy and examined for CRM in situ with a 10 X handlens. All live CRM were counted in two, 1-cm2 lens fields on each fruit. The two counts per fruit were averaged and recorded as one observation.
实验用BAS 300 001和BAS 300 111单独使用以及与ATPLUS 411喷雾油混合使用，与Vendex比较对CRM的疗效。处理被随机分配到单株地块，并在一个30年的葡萄柚果园中以16 x 22英尺的间距重复4次。6月4日，使用便携式Hypro 5200高压喷雾器，在200 psi的压力下，用手枪对树木进行叶面径流喷洒(约3.0加仑/棵)。喷淋后每隔7天和2周进行一次计数。在每个计数日期，每个重复(52个/处理)随机选择树冠臂长处的13个果实，并用10倍放大镜原位检测CRM。所有活的CRM在每个水果上的两个1平方厘米的透镜区中计数。每个水果的两次计数取平均值并记录为一次观察。
{"title":"Evaluation of BAS 300 001 and Bas 300 111 for Citrus Rust Mite Control on Texas Citrus, 1992","authors":"J. French, E. Hernandez","doi":"10.1093/iat/18.1.72","DOIUrl":"https://doi.org/10.1093/iat/18.1.72","url":null,"abstract":"\u0000 Experimental BAS 300 001 and BAS 300 111, alone and tank mixed with ATPLUS 411 spray oil, were compared to Vendex for efficacy against CRM. Treatments were randomly assigned to single tree plots and replicated 4 times in a 30-yr-old grapefruit orchard on 16 x 22 ft spacing. Trees were sprayed on 4 Jun to foliar runoff (ca. 3.0 gal/tree) by handgun using a portable Hypro 5200 high pressure sprayer operating at 200 psi. Post spray counts were made at 7 days and at ca. 2-week intervals thereafter. At each count date, 13 fruit per replicate (52/treatment) were randomly selected at arms length in the tree canopy and examined for CRM in situ with a 10 X handlens. All live CRM were counted in two, 1-cm2 lens fields on each fruit. The two counts per fruit were averaged and recorded as one observation.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81014652","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}
Pumpkins were direct seeded on 20 Jul near Bay, AR in Dubbs sandy loam soil on raised beds spaced 2 m apart. Plots were 12 m long, 3 beds wide with 3 m alleys separating plots. Treatments included applications at planting (AP) or 3 wks later; these were either a soil applied sidedress (SD) or a foliar application (F). AP applications were made in the seed furrow using a CO2 charged backpack sprayer calibrated to deliver 3.6 liters/100 m of row through a single hollow cone nozzle attached to the planter’s double disk opener. For the sidedress application, the spray nozzle was attached to a small knife which cut a 2 to 4 cm deep furrow ca 15 cm from the base of the plants. The broadcast foliar application was made with a tractor mounted sprayer equipped with flat fan nozzles calibrated to deliver 327 liters/ha at 0.55 MPa. Plants were inspected for pest presence and damage on 10 and 22 Aug. MA (winged and wingless) densities were determined by examining 1 leaf, 18 to 25 cm in diameter, on 5 randomly selected plants/plot. The entire plant was then inspected and the total no. of live adult SCB, SCB damage, dead SCB within a 30 cm radius of the base of the plant, and number of SB egg masses were recorded. SCB damage was rated on a 1 to 5 scale ranging from 1 = 0 or very little damage to 5 = complete decimation.
{"title":"Pumpkin Insect Pest Control, 1992","authors":"T. Teague","doi":"10.1093/iat/18.1.166a","DOIUrl":"https://doi.org/10.1093/iat/18.1.166a","url":null,"abstract":"\u0000 Pumpkins were direct seeded on 20 Jul near Bay, AR in Dubbs sandy loam soil on raised beds spaced 2 m apart. Plots were 12 m long, 3 beds wide with 3 m alleys separating plots. Treatments included applications at planting (AP) or 3 wks later; these were either a soil applied sidedress (SD) or a foliar application (F). AP applications were made in the seed furrow using a CO2 charged backpack sprayer calibrated to deliver 3.6 liters/100 m of row through a single hollow cone nozzle attached to the planter’s double disk opener. For the sidedress application, the spray nozzle was attached to a small knife which cut a 2 to 4 cm deep furrow ca 15 cm from the base of the plants. The broadcast foliar application was made with a tractor mounted sprayer equipped with flat fan nozzles calibrated to deliver 327 liters/ha at 0.55 MPa. Plants were inspected for pest presence and damage on 10 and 22 Aug. MA (winged and wingless) densities were determined by examining 1 leaf, 18 to 25 cm in diameter, on 5 randomly selected plants/plot. The entire plant was then inspected and the total no. of live adult SCB, SCB damage, dead SCB within a 30 cm radius of the base of the plant, and number of SB egg masses were recorded. SCB damage was rated on a 1 to 5 scale ranging from 1 = 0 or very little damage to 5 = complete decimation.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83004284","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 test was designed to evaluate fungicide and insecticide seed treatments against naturally occurring populations of plant pathogens and insects. The treated seed was planted at the MSU Post experiment farm near Bozeman on 4 May. Four row plots measuring 1.3 m x 6 m and seeded at 160 seeds/m2 were arranged in a randomized block design with 4 replicates. Flea beetle damage was assessed on young cotyledons 24 d after seeding. Stand density counts were made after the 4 true leaf stage. Three applications of Sevin insecticide were applied at approximately 2 wk intervals, starting at the time the plots were rated for flea beetle damage. Data collected were analyzed using analysis of variance. The statistical relationship between means was determined with Student-Newman-Keuls multiple comparison test at P = 0.05. In this test, the fungicides were chosen to control a wide spectrum of disease organisms.
本试验旨在评价杀菌剂和杀虫剂种子处理对自然发生的植物病原体和昆虫种群的影响。处理后的种子于5月4日在Bozeman附近的MSU Post实验农场种植。采用随机区组设计，4个随机区组设计，种植面积为1.3 m x 6 m，种子密度为160粒/m2。在播种24 d后，评估了蚤甲虫对幼嫩子叶的危害。4真叶期后进行林分密度计数。Sevin杀虫剂每隔约2周施用3次，从对地块进行蚤甲虫危害评估时开始施用。收集的数据采用方差分析进行分析。均数间的统计关系采用Student-Newman-Keuls多重比较检验，P = 0.05。在这个试验中，选择杀菌剂来控制广泛的病生物体。
{"title":"Control of Flea Beetles on Canola with Insecticides Applied as Seed Treatments, 1992","authors":"R. Johnston, D. Mathre","doi":"10.1093/iat/18.1.193","DOIUrl":"https://doi.org/10.1093/iat/18.1.193","url":null,"abstract":"\u0000 This test was designed to evaluate fungicide and insecticide seed treatments against naturally occurring populations of plant pathogens and insects. The treated seed was planted at the MSU Post experiment farm near Bozeman on 4 May. Four row plots measuring 1.3 m x 6 m and seeded at 160 seeds/m2 were arranged in a randomized block design with 4 replicates. Flea beetle damage was assessed on young cotyledons 24 d after seeding. Stand density counts were made after the 4 true leaf stage. Three applications of Sevin insecticide were applied at approximately 2 wk intervals, starting at the time the plots were rated for flea beetle damage. Data collected were analyzed using analysis of variance. The statistical relationship between means was determined with Student-Newman-Keuls multiple comparison test at P = 0.05. In this test, the fungicides were chosen to control a wide spectrum of disease organisms.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84038082","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 conducted on a buffalograss lawn in Lincoln, NE. Insecticides were applied on 15 Aug to 1.2 x 1.2 m plots arranged in a RCB design with 4 replications. Buffalograss was maintained at a mowing height of 10.2 cm and mowed to 5.1 cm prior to insecticide applications. Thatch accumulation ranged from 0 to 0.64 cm. Conditions at the time of application were as follows; air temperature 33°C; soil temperature (10.2 cm depth) 30°C; soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.0-7.0; water pH, 7.0; soil moisture 11%. Insecticides were applied with a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and delivering 18.9 liter spray/93 m2. Immediately following application, plots were irrigated with 0.325 cm water. No rainfall occurred during the post-treatment period. Product efficacy was evaluated 5 DAT (20 Aug) by removing from each plot three turf-soil cores to a depth of 2.54 cm with a 10.8 cm diam cup cutter (0.03 m2 total area per plot). Cores were returned to the laboratory and placed in Berlese funnels. Extracted chinch bugs were counted after 48 h.
{"title":"Reduced Rates of Dursban Combined with Sunspray Ultrafine Spray Oil for Control of Chinch Bugs on Buffalograss, 1991","authors":"F. P. Baxendale, D. Steinegger","doi":"10.1093/iat/18.1.329","DOIUrl":"https://doi.org/10.1093/iat/18.1.329","url":null,"abstract":"\u0000 The experiment was conducted on a buffalograss lawn in Lincoln, NE. Insecticides were applied on 15 Aug to 1.2 x 1.2 m plots arranged in a RCB design with 4 replications. Buffalograss was maintained at a mowing height of 10.2 cm and mowed to 5.1 cm prior to insecticide applications. Thatch accumulation ranged from 0 to 0.64 cm. Conditions at the time of application were as follows; air temperature 33°C; soil temperature (10.2 cm depth) 30°C; soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.0-7.0; water pH, 7.0; soil moisture 11%. Insecticides were applied with a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and delivering 18.9 liter spray/93 m2. Immediately following application, plots were irrigated with 0.325 cm water. No rainfall occurred during the post-treatment period. Product efficacy was evaluated 5 DAT (20 Aug) by removing from each plot three turf-soil cores to a depth of 2.54 cm with a 10.8 cm diam cup cutter (0.03 m2 total area per plot). Cores were returned to the laboratory and placed in Berlese funnels. Extracted chinch bugs were counted after 48 h.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72834394","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}
Treatments were applied on 1 Aug to ‘Stoneville 453’ cotton in Phillips County, AR, using a CO2 powered backpack sprayer calibrated to deliver 10.5 gal/acre at 50 psi through TX-4 hollowcone nozzles on a 19-inch spacing. Plots were 2, 38-inch rows, 50 ft long arranged in a randomized complete block design with 4 replications. Evaluations were made 2 DAT using a hand-lens to count the number of spider mites on a total of 3.6-inches2 of leaf area on the upper portion of the cotton plants in the center 2 rows of each plot.
{"title":"Control of Spider Mites in Cotton, 1990","authors":"D. R. Johnson, G. Studebaker","doi":"10.1093/iat/18.1.236","DOIUrl":"https://doi.org/10.1093/iat/18.1.236","url":null,"abstract":"\u0000 Treatments were applied on 1 Aug to ‘Stoneville 453’ cotton in Phillips County, AR, using a CO2 powered backpack sprayer calibrated to deliver 10.5 gal/acre at 50 psi through TX-4 hollowcone nozzles on a 19-inch spacing. Plots were 2, 38-inch rows, 50 ft long arranged in a randomized complete block design with 4 replications. Evaluations were made 2 DAT using a hand-lens to count the number of spider mites on a total of 3.6-inches2 of leaf area on the upper portion of the cotton plants in the center 2 rows of each plot.","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":"72847180","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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