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 in A Drill-Seeded, Delayed Flood Culture–Eup Study, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 297-297
Author(s):  
M.O. Way ◽  
R.G. Wallace
Keyword(s):  
Agricultural Research ◽  
Growing Season ◽  
Soil Cores ◽  
Deep Soil ◽  
Untreated Seed ◽  
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 3 acres. On 26 Mar, plots were fertilized by air with 55-40-0 at 56 lb nitrogen/acre. Fertilizer was in-corporated with a “Do-all” on the same day. On 27 Mar, a designated plot was treated with Fipronil 80 WG at 0.0325 lb (AI)/acre using a large (11 nozzle, tip size80015, 50 mesh screens), 2 person, hand-held spray boom pressurized with CO2. Final spray volume was 10.6 gpa. Following application, the treatment was incorporated with a spike-tooth harrow. On 27 Mar, plots were drill-planted (7.5 inches between rows) with fipronil-treated or untreated seed at 90 lb/acre. Seed was treated with fipronil at 0.0325 lb (AI)/ cwt seed. All seed was provided by Rhone-Poulenc Ag Company which obtained untreated, registered seed from G&H Seed Co., Inc., Crowley, LA. Plots were “rolled” after planting to help cover seed and to create a firm seedbed. Plots were flush irrigated (temporary flood for 24th, then drain) on 5 Apr. Rice emerged 15 Apr. No differences in emergence were detected among the plots. From emergence to application of the permanent flood onl6May(31d after rice emergence), rice was flush irrigated as needed. On 24 Apr, plots were treated by air with Stam 4E and Basagran at 3 qt and 1 pt/acre, respectively. On 9 May, plots were fertilized by air with urea at 55 lb nitrogen/acre. Furdan 3G at 0.5 lb (AI)/acre was applied by air to the designated plot on 30 May (14 d after application of the permanent flood). On each of 5 Jun and 24 Jun (20 and 39 d after application of the permanent flood), twenty 4 inch diam X 4 inch deep soil cores were removed (each core containing at least 1 rice plant) from each plot. Rice plants in cores were washed and immature RWW recovered from the roots. On 3 Jun, plots were fertilized with urea at 60 lb nitrogen/acre; thus, total nitrogen applied to the plots for the growing season was 171 lb/acre. All aerial applications were made by M&M Air Service of Beaumont, TX. Plots were not harvested due to mechanical and weather problems. Insect counts were transformed using x + 0.5 and analyzed by 1 -way ANOVA and LSD.

scholarly journals Control of Rice Water Weevil with Karate 1Ec, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 282-283
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Rice Plant ◽  
Agricultural Research ◽  
Soil Cores ◽  
Deep Soil ◽  
Flood Depth ◽  
Mesh Screen ◽  
Spray Volume ◽  
Rice Water ◽  
Extension Center ◽  
Metal Barrier

Abstract The experiments were conducted at the TAMU Agricultural Research and Extension Center at Beaumont. Experiment I was water-seeded rice with continuous flood. The experiment was designed as a RCB with 6 treatments and 4 replications. Each plot was 15 ft X 8 ft and was surrounded by a metal barrier to prevent movement of insecticide. On 12 May plots were treated with Ordram 1 at 27 lb/acre and fertilized with urea at 110.5 lb N/acre followed by a light incorporation into dry, cloddy soil (League) with a rake. Plots were then flooded and sown (12 May) with presprouted Gulfmont seed at 130 lb dry seed/acre. To prepare presprouted seed, dry seed was soaked in water for 24 h then drained and allowed to air dry for 24 h before planting. Flood depth was about 4 inches and rice emerged through water 18 May–6 d after planting. Karate treatments were applied with a 4 nozzle (tip size 800067, 50 mesh screen), hand-held, CO2 pressurized spray rig. Final spray volume was 30 gpa. Furadan was applied with a hand-held shaker jar at the rate and time shown in Table 1. On 12 Jun (25 d after emergence of rice through water) 5, 4 inch diam X 4 inch deep soil cores (each core contained at least 1 rice plant) were removed from each plot, washed, and immature RWW recovered. At maturity (24 Aug) plots were harvested with a small combine and yields adjusted to 12% moisture. Insect counts were transformed using x+0.5 and all data analyzed by 2 way ANOVA and, where appropriate, DMRT.

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 Control of Rice Water Weevil with Naturalis-L, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 229-229
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Soil Type ◽  
Rice Plant ◽  
Agricultural Research ◽  
Soil Cores ◽  
Deep Soil ◽  
Rice Roots ◽  
Spray Volume ◽  
Rice Water ◽  
Extension Center ◽  
Metal Barrier

Abstract The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont and was designed as a RCB with 7 treatments and 4 replications. Each plot was 15 ft × 12 rows (7 inches between rows) and was surrounded by a metal barrier to prevent movement of treatment insecticides. Soil type was League. Rice was drill planted on 26 Mar at 100 lb seed/acre. Rice emerged 11 Apr. From planting to application of the permanent flood, rice was flush irrigated as needed. Urea was applied near planting (29 Mar) at 122 lb/acre, 1 d before the permanent flood (6 May) at 122 lb/acre, and at panicle differentiation (9 Jun) at 122 lb/acre for a total of 170 lb nitrogen/acre. Facet and Basagran were mixed with crop oil and applied 22 Apr at 0.75 lb (AI)/acre for each herbicide. The permanent flood was applied 7 May (26 d after rice emergence). Naturalis-L treatments were applied at the rate and times shown in the table with a 4 nozzle (tip size 800067, 50 mesh screens), hand-held, CO2 pressurized spray rig. Final spray volume was 21.3 gal/acre. Furadan 3G was applied at the time and rate shown in the table with a hand-held shaker. From 31 May to 1 Jun (24-25 d after application of the permanent flood), 5, 4-inch diam × 4-inch deep soil cores (each core contained at least 1 rice plant) were removed from each plot. Rice roots were washed and immature RWW recovered. Plots were harvested at maturity (29 Jul) and yields adjusted to 12% moisture. Insect counts were transformed using vX + 0.5. All data were analyzed by ANOVA.

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 Control of Rice Water Weevil with Exp 60949A and Exp 80572B in a Dry-Seeded, Delayed Flood Culture, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 271-271
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Total Nitrogen ◽  
Rice Plant ◽  
Agricultural Research ◽  
Growing Season ◽  
Soil Cores ◽  
Deep Soil ◽  
Untreated Seed ◽  
Small Plot ◽  
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 7 treatments and 4 replications. Each plot was 15 ft X 8 ft and surrounded by a metal barrier to prevent movement of insecticides. On 6 May, plots were fertilized with urea at 113 lb nitrogen/acre and planted by hand with treated or untreated seed at 100 lb seed/acre. Seed treated (at the rate shown in the table) with EXP 80572B 44.1 FC was provided by Rhone-Poulenc Ag Company. Selected plots were treated with EXP 60949A 1.5 G at the rates shown in the table. Fertilizer, seed, and insecticide were incorporated into dry League soil with a rake. Immediately after incorporation, plots were flushed (temporary flood for 24^18 h then drain). Rice emerged 15 May. From emergence of rice through soil to application of the permanent flood on 5 Jun (21 d after rice emergence through soil), rice was flush irrigated as needed. On 28 May, plots were sprayed with Facet 75DF 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, selected plots were treated with EXP 60949A 1.5 G at the rates shown in the table. On 19 Jun and 10 Jul, plots were fertilized with urea at 30 lb/acre; thus, total nitrogen applied during the growing season was 173 lb/acre. On 19 Jun (14 d after application of the permanent flood), selected plots were treated with Furadan 3G at 20 lb/acre. All granular insecticides were applied with a hand-held shaker jar. On each of 28 Jun and 14 Jul (23 and 39 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 (7 Sep = 117 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 Karate in a Drill-Seeded, Delayed Flood Culture at Eagle Lake, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 263-264
Author(s):  
M. O. Way ◽  
R. G. Wallace ◽  
J. Vawter
Keyword(s):  
Soil Type ◽  
Rice Plant ◽  
Growing Season ◽  
Stink Bug ◽  
Soil Cores ◽  
Deep Soil ◽  
Western Area ◽  
Spray Volume ◽  
Rice Water ◽  
Eagle Lake

Abstract The experiment was conducted at the TAES Western Area Operations at Eagle Lake. The experiment was designed as a RCB with 4 treatments and 4 replications. Each plot was 15 ft X 8 ft and was surrounded by a metal barrier to prevent movement of insecticide and fertilizer. Plots were drill planted (7.5 inches between rows) on 15 Apr at 80 lb seed/acre. Soil type was Nada. Plots were fertilized at planting with 45 lb nitrogen/acre, 38 lb phospho-rus/acre, and 40 lb potassium/acre. Rice emerged through soil on 25 Apr. From emergence of rice through soil to application of the permanent flood on 22 May (27 d after application of the permanent flood), plots were flush irrigated (24 h temporary flood then drain) as needed. On 24 Apr, plots were sprayed with Wham EZ at 1 qt/acre, Bolero 8 EC at 2 pt/acre and Facet 75 DF at 0.25 lb/acre. On 16 May, plots were sprayed with Wham EZ at 3 qt/acre, Facet 75 DF at 0.25 lb/acre, and Londax at 0.05 lb/acre. On 21 May, plots were fertilized with urea at 60 lb nitrogen/acre. On 24 May (2 d after application of the permanent flood), selected plots were sprayed with Karate at the rates shown in the table using a 4-nozzle (tip size 800067, 50 mesh screens), hand-held spray rig pressurized with CO2. Final spray volume was 1.60 gpa. At the time of Karate application, adult RWW were present in the plots. On 5 Jun (14 d after application of the permanent flood), selected plots were treated with Furadan 3 G at 20 lb/acre using a handheld shaker jar. On 13 Jun, plots were sprayed with Londax at 0.05 lb/acre. On 25 Jun, plots were fertilized with urea at 50 lb nitrogen/acre; thus, total nitrogen applied during the entire growing season was 155 lb/acre. On each of 12 Jun and 25 Jun (21 and 34 d, respectively, after application of the permanent flood), 5, 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. On 12 Jul, plots were sprayed with Sevin XLR Plus at 1 qt/acre to control rice stink bug. The middle 8 rows of each plot were harvested on 26 Aug (123 d from emergence of rice through soil). 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 Fipronil, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 281-282
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Agricultural Research ◽  
Soil Cores ◽  
Deep Soil ◽  
Untreated Seed ◽  
Flood Depth ◽  
Mesh Screen ◽  
Entire Experiment ◽  
Dry Soil ◽  
Rice Water ◽  
Extension Center

Abstract The experiments were conducted at the TAMU Agricultural Research and Extension Center at Beaumont. Experiment I was water-seeded rice with continuous flood. The experiment was designed as a RCB with 9 treatments and 4 replications. Each plot was 15 ft X 8 ft, surrounded by a metal barrier to prevent movement of insecticide. On 28 Apr, plots were treated with the herbicide Ordram 15G at 4 lb (AI)/acre and fertilized with 19-19-19 at 250 lb/acre (47.5 lb N/acre). Herbicide and fertilizer were applied by hand and lightly incorporated with a rake into League soil. Fipronil-impregnated fertilizer was provided by Rhone-Poulenc Ag Company. EXP60655A 1.65G was applied with a hand-held shaker jar. EXP60720A 80WG was applied with a 4 nozzle (tip size 800067, 50 mesh screen), hand-held, CO2 pressurized spray rig. Final spray volume was 32 gpa. EXP60655A 1.65G and EXP60720A 80WG were lightly incorporated with a rake into the dry soil. Following these operations, plots were flooded on 28 Apr and hand-planted (water-seeded) on the same day with appropriate presprouted treated or untreated seed at 130 lb dry seed/acre. To presprout seed, dry seed was soaked in water for 1 d then drained for 1 d. Seed treatments were applied to presprouted seed according to instructions provided by Rhone-Poulenc Ag Company. On 7 May (9 d after planting) rice emerged through the water (flood depth was about 4 inches). Furadan 3G was applied with a hand-held shaker jar. On 12 Jun, urea was applied to all plots at 50 lb N/acre (97.6 lb N/acre was applied for the entire experiment). From 24 May-1 Jun (17-25 d after rice emergence through the water), 5, 4 inch diam X 4 inch deep soil cores (each core contained at least 1 rice plant) were removed from each plot, washed, and immature RWW recovered. Sampling was repeated 22-26 Jun (46-50 d after emergence through the water). At maturity (16 Aug), plots were harvested with a small combine and yields adjusted to 12% moisture. Insect counts were transformed using x+0.5 and all data analyzed by 2 way ANOVA and, where appropriate, DMRT.

scholarly journals Control of Rice Water Weevil with Exp 80698A 75 Fs in a Water-Seeded, Pinpoint Flood Culture, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 269-270
Author(s):  
M. O. Way ◽  
R. G. Wallace
Keyword(s):  
Agricultural Research ◽  
Growing Season ◽  
Rice Seed ◽  
Soil Cores ◽  
Deep Soil ◽  
Plastic Bag ◽  
Sprouted Seeds ◽  
Small Plot ◽  
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 19 Apr, plots were fertilized with urea at 113 lb nitrogen/acre and treated with Ordram 15 G at 17 lb/acre. Selected plots were sprayed with selected insecticide treatments on 19 Apr using a 4 nozzle (tip size 800067, 50 mesh screens); hand-held spray rig pressurized with CO2. Final spray volume was 16 gpa. The insecticides were incorporated into dry League soil using a rake. Immediately after incorporation, plots were flooded. On 22 Apr, plots were planted with sprouted seed at 120 lb dry seed/acre. Sprouted seeds were prepared by soaking untreated, dry seed for 24 h followed by draining and drying for 24 h. Selected plots were hand planted with selected seed treatments which were applied using the “Le Sak” method in which sprouted seed was placed in a plastic bag and insecticide poured over the seed. The seed and insecticide were mixed inside the bag until seed adsorbed all insecticide. The bag was opened and insecticide allowed to dry on seed. On 25 Apr, plots were drained and reflooded 29 Apr. Rice in most treatments emerged through water on 1 May; however, untreated rice and rice seed treated with EXP 80698A at 0.05 lb (AI)/acre did not emerge through water for 1 to 3 d later. On 10 May (9 d after emergence of rice through water), selected plots were treated with Furadan 3 G at 20 lb/acre using a hand-held shaker jar. On each of 22 May, 11 Jun, and 10 Jul, plots were fertilized with urea at 30 lb nitrogen/acre; thus, total nitrogen applied to plots during the growing season was 203 lb/acre. On each of 28 May and 10 Jun (27 and 43 d, respectively, after emergence of rice through water), 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 (15 Aug = 106 to 109 d after emergence of rice through water) 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.

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