scholarly journals Control of Rice Water Weevil with Fipronil Applied Preplant Incorporated, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 225-225
Author(s):  
J. L. Bernhardt
Keyword(s):  
Experimental Design ◽  
Salt Water ◽  
Plant Roots ◽  
Row Spacing ◽  
Silt Loam ◽  
Soil Cores ◽  
Plot Size ◽  
Untreated Check ◽  
Small Plot ◽  
Rice Water

Abstract Three rates of fipronil (EXP60655A 1.5G) applied preplant and lightly incorporated were compared with carbofuran (Furadan 3G) and an untreated check for control of RWW. Experimental design was a RCB with 4 replications. Plot size was 9 rows (7 inch row spacing) × 16 ft. Rice was drill-seeded in a Crowley silt loam at 110 lb/acre 12 May and emerged 20 May. Fipronil was applied broadcast with a hand shaker and lightly incorporated with a hand rake on 12 May. Propanil and thiobencarb at 2 lb (AI)/acre each and bentazon at 1 lb (AI)/acre were applied 1 Jun. Permanent flood was applied on 13 Jun. Nitrogen was applied in a 3-way split of 120 lb/acre on 13 Jun and 30 lb/acre each on 15 and 26 Jul. Furadan 3G was applied broadcast with a hand shaker on 20 Jun. On 5 and 12 Jul five 4 × 4 inch (diam by depth) soil cores were removed from each plot. Soil was washed from plant roots into 40-mesh screens. Screens were immersed in salt water and RWW immatures were recovered and counted. The center 4 rows × 12 feet of plots were harvested on 27 Sep with a small plot combine. Reported yields were adjusted to 12% moisture.

scholarly journals Control of Rice Water Weevil with Dimilin, 1996A

1997 ◽  
Vol 22 (1) ◽  
pp. 288-288
Author(s):  
J. L. Bernhardt
Keyword(s):  
Experimental Design ◽  
Weed Control ◽  
Salt Water ◽  
Plant Roots ◽  
Silt Loam ◽  
Soil Cores ◽  
Plot Size ◽  
Rice Water Weevil ◽  
Mesh Screen ◽  
Rice Water

Abstract The experimental design was a RCB with 4 replications. Plot size was 9 rows (7 inch spacing) by 20 ft. Each plot was bound by levees. Rice was drill-seeded in Crowley silt loam at 90 lb/acre on 3 May and emerged on 12 May. Propanil and Bolero at 4 and 2 lb (AI)/acre, respectively, were applied for weed control on 29 May. Nitrogen was applied in a 3-way split of 75 lb N/acre as urea on 12 Jun and 30 lb N/acre on 5 and 14 Jul. Permanent flood was established on 12 Jun. All treatments of Dimilin were made with a CO2-pressurized back-pack sprayer at 18 gpa. Furadan 3G was applied 10 d after permanent flood with a hand-shaker. On 3 and 5 Jul and on 9 and 10 Jul five 4X4 inch (diam by depth) soil cores with an average of 5 plants/core were removed from plots. Soil was washed from the plant roots into a 40-mesh screen. The screen was immersed in salt water and RWW immatures were removed. Plots were harvested with a small combine on 13 Sept. Reported yields were adjusted to 12% moisture. Data were analyzed with ANOVA and LSD.

scholarly journals Control of Rice Water Weevil with Selected Insecticides, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 260-261
Author(s):  
J.L. Bernhardt
Keyword(s):  
Salt Water ◽  
Plant Roots ◽  
Silt Loam ◽  
Soil Cores ◽  
Emergence Period ◽  
Plot Size ◽  
Mesh Screen ◽  
Rainy Weather ◽  
Foundation Seed ◽  
Rice Water

Abstract The experimental design was a RCB with 6 treatments and 4 replications. Plot size was 9 rows (7-inch spacing) by 20 ft. Each plot was bound by levees. Foundation seed rice was treated with fipronil 75 FS by Celpril Industries (Manteca, CA). Treated and untreated rice was drill seeded by Crowley silt loam at 90 lb/acre on 13 May and emerged between 24 and 28 May. Cool, rainy weather extended the emergence period and contributed to 5 to 15% stand reduction in plots. Propanil (Stam M4) and thiobencarb (Bolero 8 E) at 3 and 2 lb (AI)/acre, respectively, were applied for weed control on 12 Jun. Nitrogen was applied in a 3-way split of 90 lb N/acre as urea on 2 Jul and 30 lb N/acre on 23 and 31 Jul. Permanent flood was established on 27 Jun. Post-flood foliar treatments of Fury, Karate, and Dimilin were made with a CO2-pressurized backpack sprayer at 18 gpa. On 18 and 23 Jul three 4X4 inch (diam by depth) soil cores with an average of 3 plants/core were removed from plots. Soil was washed from the plant roots into a 40-mesh screen. The screen was immersed in salt water and RWW immatures were removed. Plots were harvested with a Yanmar combine on 7 Oct. Reported yields were adjusted to 12% moisture. Data were analyzed with an ANOVA and means separated with LSD.

scholarly journals Control of Rice Water Weevil and Rice Stalk Borer with Fipronil, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 259-260
Author(s):  
J.L. Bernhardt
Keyword(s):  
Salt Water ◽  
Row Spacing ◽  
Rice Seed ◽  
Silt Loam ◽  
Soil Cores ◽  
Plot Size ◽  
Mesh Screen ◽  
Foundation Seed ◽  
Rice Water ◽  
Experimental Use

Abstract This was a non-replicated trial with 4 treatments for experimental use permit. Whole-plot size was 3 acres for each treatment. Whole plots were divided into 3 subplots each with 55 ft X 665 ft of planted area. Each subplot was bound by levees. Fipronil 80 WP was tank mixed with water and applied preplant on 23 May by a tractormounted sprayer delivering 10.3 gpa. The insecticide was incorporated with a field cultivator set at a 2-3-inch depth. Foundation rice seed was treated with fipronil 75 FS by Celpril Industries (Manteca, CA). Treated and untreated foundation seed rice was drill seeded in Crowley silt loam at 90 lb/acre (6-inch row spacing) on 23 May and emerged on 29 May. Subplots were temporarily flooded (flushed) on 12-13 Jun to facilitate growth. Thiobencarb (Bolero 8 E), quinclo-rac (Facet 75 DF), and propanil (Stam 4 E) at 3, 0.33, and 1 lb (AI)/acre, respectively, were applied by aircraft for weed control on 2 Jun. Also, propanil at 3 lb (AI)/acre was applied by aircraft on 24 Jun. Permanent flood was established on 24-25 Jun. Furadan 3 G was applied by aircraft on 9 Jul, 14 d after permanent flood. On 17 Jul and 30 Aug, six 4 X 4 inch (diam by depth) soil cores with an average of 6 plants/core were removed from each subplot. Soil was washed from the plant roots into a 40-mesh screen. The screen was immersed in salt water and RWW immatures were removed and counted. In each treatment, 1,330 ft along the edge of subplots was examined for the presence of rice whiteheads with blank florets. Stems of whiteheads were examined for the presence of RSB immatures or for evidence of their presence. Whole subplots were harvested with a combine on 3 and 6 Oct. Recorded yields were adjusted to 12% moisture. Data were analyzed with a 1-way ANOVA and means separated with LSD

scholarly journals Green Peach Aphid Control With Foliar Sprays, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 171-171
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson
Keyword(s):  
Green Peach Aphid ◽  
Sweet Pepper ◽  
Individual Treatment ◽  
Row Spacing ◽  
Silt Loam ◽  
Hollow Cone ◽  
Aphid Control ◽  
Untreated Check ◽  
Extension Center ◽  
Pepper Plants

Abstract Experimental plots were established on the UI Research and Extension Center, Kimberly, Idaho. Potatoes were planted on 25 Apr and irrigated by solid set sprinkler. The soil type was Portneuf silt loam. Four treatments and one untreated check plot were replicated four times in a RCB design. Individual treatment plots were 4 rows (36 inch row spacing) wide by 25 ft long with 5 ft alleyways separating the plots. Green peach aphids were mass reared on greenhouse sweet pepper plants (California Wonder) for release into individual plots. Aphid releases were made into test plots the last wk in Jun and again in the first wk of Jul. A total of four heavily infested pepper plants was released per plot. Treatment sprays were broadcast applied using a CO2 pressurized backpack sprayer (30 psi) and delivering 20 gal finished spray per acre (four, 10X hollow cone nozzles). Aphid counts were made from non-destructively examining 10 randomly selected leaves in the center two rows of each plot. Leaves were sampled from the top, middle, and bottom sections of the plants. The data collected and presented are the total number of aphids per 20 leaves. On 19 Jul a pre-count was taken and on 21 Jul all treatment applications were made. Data were analyzed using ANOVA and Student-Newman-Keuls multiple means comparison.

scholarly journals Control of Rice Water Weevil with Exp 80698A 75 Fs Applied Before the Permanent Flood in a Dry-Seeded, Delayed Flood Culture, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 268-269
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Rice Plant ◽  
Agricultural Research ◽  
Growing Season ◽  
Soil Cores ◽  
Deep Soil ◽  
Treated Seed ◽  
Small Plot ◽  
Spray Volume ◽  
Rice Water ◽  
Extension Center

Abstract The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont and was designed as a RCB with 6 treatments and 4 replications. Each plot was 15 ft X 8 ft and surrounded by a metal barrier to prevent movement of insecticide. On 4 May, plots were fertilized with urea at 113 lb nitrogen/acre and hand planted with untreated or treated seed at 100 lb seed/acre. EXP 80698A 75 FS was applied to seed at the rates in the table. Rhone-Poulenc Ag Company provided the treated seed. Also on 4 May, selected plots were tested with EXP 80698A 75 FS at the rates in the table using a 4 nozzle (tip size 800067, 50 mesh screens), hand-held spray rig pressurized with CO2. Final spray volume was 16.0 gpa. Immediately after planting and applying fertilizer and insecticide, dry League soil in plots was raked to incorporate urea, seed and insecticide. Immediately after incorporation, plots were flushed (24-48 h temporary flooding, then draining). Rice emerged through soil on 14 May. From emergence of rice through soil to application of the permanent flood on 4 Jun (21 d after rice emergence through soil), rice was flush irrigated as needed. On 28 May, plots were sprayed with Facet 75 DF at 0.5 lb/acre, crop oil concentrate at 2 pt/acre, Prowl 3.3 EC at 2 pt/acre, and Basagran at 1.5 pt/acre. Herbicides were applied by hand with a 20 ft spray boom pressurized with CO2. On 18 Jun (14 d after application of the permanent flood), selected plots were treated with Furadan 3 G at 20 lb/acre using a hand-held shaker jar. On 19 Jun and 10 Jul, plots were fertilized with urea at 30 lb nitrogen/acre; thus, total nitrogen applied during the growing season was 173 lb/acre. On each of 29 Jun and 11 Jul (25 and 37 d, respectively, after application of the permanent flood), five 4-inch diam X 4 inch deep soil cores (each containing at least 1 rice plant) were removed from each plot. Rice plants in cores were washed and immature RWW recovered from the roots. At maturity, plots were harvested (6 Sep = 115 d from emergence of rice through soil) with a small plot combine. Yields were adjusted to 12% moisture. Insect counts were transformed using x + 0.5 and all data analyzed by 2-way ANOVA and DMRT.

scholarly journals Control of Rice Water Weevil with Exp 80698A 75 Fs Applied After the Permanent Flood in a Dry-Seeded, Delayed Flood Culture, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 269-269
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Rice Plant ◽  
Agricultural Research ◽  
Growing Season ◽  
Soil Cores ◽  
Deep Soil ◽  
Treated Seed ◽  
Small Plot ◽  
Spray Volume ◽  
Rice Water ◽  
Extension Center

Abstract The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont and was designed as a RCB with 5 treatments and 4 replications. Each plot was 15 ft X 8 ft and surrounded by a metal barrier to prevent movement of insecticides and fertilizer. On 1 May, plots were fertilized with urea at 113 lb nitrogen/acre and planted with 100 lb of untreated or EXP 80698A 75 FS-treated seed/acre at the rate shown in the table. Fertilizer and seed were incorporated into dry league soil with a rake. Immediately after incorporation, plots were flushed (24-48 h temporary flooding, then draining). Rice emerged through soil on 9 May. On 28 May, plots were sprayed with Facet 75 DF at 0.5 lb/acre, crop oil concentrate at 2 pt/acre, Prowl 3.3 EC at 2 pt/acre, and Basagran at 1.5 pt/acre. Herbicides were applied by hand with a 20 ft spray boom pressurized with CO2. Immediately before the permanent flood on 30 May (21 d after emergence of rice through soil), selected plots were treated with EXP 80698A 75 FS at 0.05 lb (AI)/acre. On 2 Jun, (3 d after application of the permanent flood), selected plots were treated with EXP 80698A 75 FS at 0.05 lb (AI)/acre and Karate at 0.03 lb (AI)/acre. All liquid insecticides were applied with a 4 nozzle (tip size 800067, 50 mesh screens) hand-held, spray rig pressurized with CO2. Final spray volume was 16.0 gpa. On 16 Jun and 10 Jul, plots were fertilized with urea at 50 and 30 lb nitrogen/acre, respectively; thus, total nitrogen applied during the growing season was 193 lb/acre. On each of 25 Jun and 10 Jul (26 and 41 d, respectively, after application of the permanent flood), five 4-inch diam X 4 inch deep soil cores (each containing at least 1 rice plant) were removed from each plot. Rice plants in cores were washed and immature RWW recovered from the roots. At maturity, plots were harvested (5 Sep = 119 d from emergence of rice through soil) with a small plot combine. Yields were adjusted to 12% moisture. Insect counts were transformed using x + 0.5 and all data analyzed by 2-way ANOVA and DMRT.

scholarly journals Evaluation of Furadan and Payload for Rice Water Weevil Control, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 257-257
Author(s):  
M. A. Muegge ◽  
J. D. Barbour ◽  
G. B. Trahan ◽  
P. A. Bollich
Keyword(s):  
Row Spacing ◽  
Research Station ◽  
Silt Loam ◽  
Orthogonal Contrasts ◽  
Rice Water Weevil ◽  
Wire Screen ◽  
Pesticide Treatment ◽  
Mesh Screen ◽  
Application Date ◽  
Rice Water

Abstract Furadan and Payload were evaluated for control of rice water weevil at the Rice Research Station, Crowley, LA. Plots, 1.22 × 7.5 m, were individually leveed and arranged in a RCBD with 4 replicates and 4 treatments. Fertilizer was incorporated pre-plant and applied broadcast 3 wk post-flood at 50.6 kg (13-13-13) and 101.2 kg (21-0-0) N-P-K/ha respectively. Plots were drill seeded (17.5 cm row spacing) to Crowley silt loam with ‘Cyprus’ rice at 112.5 kg seed/ha on 12 May, flush irrigated 14 and 21 May, and permanently flooded 28 May. Propanil was applied at 3.34 kg/ha on 26 May using a CO2 backpack sprayer delivering 141.9 liters/ha at 1.8 kg/cm2 for weed control. Benomyl was aerially applied at 0.56 kg/ha on 28 Jun to control rice blast. Furadan 3G was applied 15 d post-flood using a hand-held shaker. Payload 15G was applied 15 d post-flood and at 2.95 kg/ha 15 and 29 d post-flood. Two randomly selected soil samples per plot were taken every 7 d starting 9 Jun and ending 21 Jul using a 10.2 × 10.2 cm core sampler. Individual samples were washed through a funnel, fitted with wire screen, into a 35 mesh screen sieve. Collected RWW larvae and pupae were floated in a saturated NaCl solution, counted and corrected for the number of rice plants per core. Effects of pesticide treatment on numbers of immature RWW were determined by ANOVA using orthogonal contrasts to separate the following mean comparisons: 1) Untreated vs Treated; 2) Furadan 3G vs Payload 15G applied once at 5.9 kg/ha and Payload applied twice a 2.95 kg/ha/application date; (3) Payload 15G applied once at 5.9 kg/ha vs Payload applied twice at 2.95 kg/ha/application. Because no significant differences in larva numbers were found among the Payload treatments, these were pooled and the following contrasts made: 1) Untreated vs Treated; 2) Furadan 3G vs Payload 15G. Analysis was performed using larval counts corrected and uncorrected for the number of plants per core, since these analyses produced similar results, only uncorrected means are presented in the table. All analyses were conducted at the 0.05 probability level.

scholarly journals Control of Rice Water Weevil with Diflubenzuron–Eup Experiment,1996

1997 ◽  
Vol 22 (1) ◽  
pp. 300-300
Author(s):  
M.O. Way ◽  
R.G. Wallace
Keyword(s):  
Rice Plant ◽  
Agricultural Research ◽  
Soil Cores ◽  
Deep Soil ◽  
Yield Data ◽  
Plot Size ◽  
Spray Volume ◽  
Rice Water ◽  
Extension Center ◽  
Experimental Use

Abstract The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont and was a non-replicated experimental use permit (EUP) study with 4 treatments. Plot size was 4.77 acres. One d before planting, plots were fertilized by air with 55 lb nitrogen and 40 lb phosphorus/acre. Fertilizer was incorporated with a “do-all” On 23 Mar plots were drill planted (7.5 inches between rows) at 90 lb seed/acre. Soil type was Labelle. Seed was treated with Apron-FI, Vitavax 200 Flowable, Zinc Starter, and Release LC. After planting, plots were “rolled” to help cover seed and to create a firm seedbed. Plots were flush irrigated (temporary flood for 24h then drain) 2 Apr. Rice emerged 11 Apr. Rice was flush irrigated as needed until application of the permanent flood on 5 May (24 d after rice emergence). On 24 Apr, Facet 75DF and Stam 4E at 0.5 lb and 2 qt/acre, respectively, were applied by air. Urea at 60 lb nitrogen/acre was applied by air on 3 May. All diflubenzuron treatments and Furadan 3G were applied by air. Final spray volume for the diflubenzuron treatments was 10 gpa. On 30 May urea was applied by air at 55 lb nitrogen/acre; thus, total nitrogen for the season was 170 lb/acre. All aerial applications were made by M&M Air Service of Beaumont. On each of 26 May and 13 Jun (21 d and 39 d, respectively, after application of the permanent flood), twenty 4 inch diam X 4 inch deep soil cores (each core containing at least 1 rice plant) were removed from each plot. Rice plants in cores were washed and immature RWW recovered from the roots. On 7 Aug, plots were harvested with a John Deere 9400 combine. For yield data, 3 swaths (each swath 400 ft X 12 ft) in each plot were cut and total grain weight recorded. Yields were adjusted to 12% moisture. Insect counts were transformed usingx + 0.5 and analyzed by 1-way ANOVA and LSD.

scholarly journals Control of Rice Water Weevil With Fipronil Applied Post-Flood in a Dry-Seeded, Delayed Flood Cul-Ture,1996

1997 ◽  
Vol 22 (1) ◽  
pp. 299-299
Author(s):  
M.O. Way ◽  
R.G. Wallace
Keyword(s):  
Agricultural Research ◽  
Growing Season ◽  
Soil Cores ◽  
Deep Soil ◽  
Treated Seed ◽  
Small Plot ◽  
Spray Volume ◽  
Rice Water ◽  
Extension Center ◽  
Spray Treatment

Abstract The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont and was designed as a RCB with 9 treatments and 4 replications. Each plot was 15 ft X 8 ft and surrounded by a metal barrier to prevent movement of insecticide. On 10 Apr, plots were fertilized with urea at 68 lb nitrogen/acre. On the same day, dry plots were planted by hand with dry seed at 90 lb/acre. Designated plots received fipronil-treated seed which was provided by Rhone-Poulenc Ag Company. Fertilizer and seed were incorporated into the soil (League clay) with a rake. Plots were flush irrigated (temporary flood for 24 h then drain) following incorporation. Rice emerged 19 Apr. From emergence of rice through the soil to application of the permanent flood on 10 May (21 d after rice emergence), plots were flush irrigated as needed. On 30 Apr, plots were treated with Stam 4E and Basagran at 4.0 and 1.0 lb (AI)/acre, respectively. Immediately prior to the permanent flood, plots were fertilized with urea at 51 lb nitrogen/acre. On the same date and before the permanent flood, designated plots were treated with a fipronil spray treatment using a 4 nozzle (tip size 800067, 50 mesh screens), hand-held, spray rig pressurized with CO2 Final spray volume was 34.8 gpa. This treatment was not incorporated. Designated plots were also treated with fipronil, Dimilin 25 WP, and Karate 1EC spray treatments at the rates and specific times after the permanent flood as described in the accompanying table. These treatments were applied as above. Furadan 3G was applied to designated plots at 0.6 lb (AI)/acre 11 d after the permanent flood with a hand-held shaker jar. Plots were fertilized with urea at 51 lb nitrogen/acre on 10 Jun; thus, total nitrogen applied to the plots for the entire growing season was 170 lb/acre. On each of 4 Jun and 3 Jul, five 4 inch diam X 4 inch deep soil cores (each core containing at least 1 rice plant) were removed from each plot. Cores were washed and inspected for immature RWW. At maturity, plots were harvested (19 Aug) with a small plot combine. Yields were adjusted to 12% moisture. Insect counts were transformed using x + 0.5. All data were analyzed by 2-way ANOVA and DMRT.

scholarly journals Colorado Potato Beetle Control With Foliar Sprays, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 168-169
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson
Keyword(s):  
Colorado Potato Beetle ◽  
Individual Treatment ◽  
Row Spacing ◽  
Silt Loam ◽  
Hollow Cone ◽  
Weekly Basis ◽  
Potato Beetle ◽  
Whole Plant ◽  
Untreated Check ◽  
Extension Center

Abstract Experimental plots were established on the UI Research and Extension Center, Kimberly, Idaho. Potatoes were planted on 25 Apr and irrigated by solid set sprinkler. The soil type was Portneuf silt loam. Six treatments and one untreated check plot were replicated four times in a RCB design. Individual treatment plots were 4 rows (36 inch row spacing) wide by 25 ft long with 5 ft alleyways separating the plots. Treatment sprays were broadcast applied using a CO2 pressurized backpack sprayer (30 psi) and delivering 20 gal finished spray per acre (four, 10X hollow cone nozzles). On a weekly basis, egg masses, small larvae (1-2 instar), large larvae (3-4instar) and adult beetles were counted, and percent defoliation estimates were made from whole plant inspections of the center 5 hills of the middle 2 plot rows. On 5 Jul a pre-count of all Colorado potato beetle (CPB) life stages was taken and all treatment applications were made. A second application of both Spinosad rates was made on 12 Jul. Data were analyzed using ANOVA and Student-Newman-Keuls multiple means comparison.

Sign in / Sign up

Export Citation Format

Share Document