scholarly journals Evaluations Of Square Damage On Bollgard (Bt) Cotton, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 422-423
Author(s):  
Gene Burris ◽  
Don Cook ◽  
B. R. Leonard ◽  
J. B. Graves ◽  
J. Pankey
Keyword(s):  
Plant Height ◽  
Cotton Seed ◽  
Methyl Parathion ◽  
Boll Weevil ◽  
Compressed Air ◽  
Bt Cotton ◽  
Silt Loam ◽  
Population Densities ◽  
Loam Soil ◽  
Height Data

Abstract Plots were four rows (40-inch spacing) wide X 30 feet long and consisted of a randomized complete design with 4 replications. Cotton seed was planted on 15 May on a Commerce silt loam soil which was sidedress fertilized with 90 lb N/acre. Cotton seed was planted with a John Deere model 7100 series planter equipped with 10 inch seed cones mounted to replace the seed hoppers. The seed rate was 4 seeds/row ft. The granular in-furrow treatment (Temik 15G, 0.5 lb Al/acre) was applied with 8 inch belt cone applicators mounted to replace the standard granular applicators. Terraclor Super-X 2E, 2 quarts formulated/acre, was applied with a compressed air sprayer system attached to 2501 nozzles on the planter. The spray tips were positioned to thoroughly cover the sides and bottom of the seed furrow and were calibrated to deliver 5 GPA finished spray. Stand and plant height data were taken on 16 Jun (data not shown). BWTBW treatments (H. spp.) were applied to Coker 312 (Spray/H. spp.) and Bollgard­ (Spray/8%) on 17 Jul and 2, 10, 17, 24, and 31 Aug. Square and terminal infestation ratings were taken (larvae/25) on 3, 12, 17, 20, 24, 26 Jul and 1, 3, 9, and 14 Aug. Boll damage and foliage damage ratings were taken on 29 Aug. The test was conducted in the presence of high boll weevil population densities. Eight overspray treatments were used to control aphids, plant bugs, and boll weevils in all plots as follows: Provado 1.6F + Vydate 3.77L, 0.04 + 0.25 lb Al/acre, (20 June); Bidrin 8E + Ovasyn 1.5E, 0.4 + 0.25 lb Al/acre, (28 June); Guthion 2L, 0.25 lb Al/acre, (10 July); andMethyl parathion 4E, 0.33 lb Al/acre, (12 July); Methyl parathion 4E, 0.33 lb Al/acre, (28 July and 12, 18 August). Bollgard­ threshold treatments 2% and 5% were sprayed with Karate IE + Larvin 3.2F at 0.033 + 0.25 lb Al/acre on 10 August. Bollgard­ threshold treatments 2%, 5% and 8% were sprayed wit Baythroid 2E + Curacron 8E + Larvin 3.2Fat 0.04 + 1.0 + 0.4 lb Al/acre respectively (17 Aug). All Bollgard­ threshold treatments were sprayed with Methyl parathion 4E + Pirate 3SC + Curacron 8E at 0.33 + 0.25 + 1.0 lb Al/acre on 24 Aug.

scholarly journals A Threshold Management Test with Nucotn 33B, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 242-242 ◽  
Author(s):  
E. Burris ◽  
D. R. Cook ◽  
B. R. Leonard ◽  
J. B. Graves
Keyword(s):  
Cotton Seed ◽  
Methyl Parathion ◽  
Boll Weevil ◽  
Control Measures ◽  
Silt Loam ◽  
Seeding Rate ◽  
Spray System ◽  
The Press ◽  
Loam Soil ◽  
Insecticide Control

Abstract Plots were replicated four times in a RCB design and were eight rows (40 in spacing) X 45 ft. Transgenic cotton seed expressing the Bt delta endotoxin and seed of the non-transgenic parent line (DP 5415) were planted on 15 May, on a Commerce silt loam soil which was fertilized with 90 lb N/acre. Cotton seed was planted with a John Deere 7100 series planter which was equipped with 10 inch seed cones mounted to replace the seed hoppers. The seeding rate was 4 seed/row ft. Granular in-furrow treatments were applied with 8 inch belt cone applicators. In-furrow spray treatments were applied with a CO2 charged spray system through 25015 flat fan nozzles positioned in front of the press wheels. The spray tips were turned to spray across the furrow and were calibrated to deliver 5 gpa finished spray. All plots received 0.5 lb (AI)/acre Temik 15G and 0.75 lb (AI)/acre Terraclor Super X 2E at planting. Insecticide control measures were applied to treatments when boll worms and tobacco budworms first deposited eggs in Jul, and at 2, 5, and 7 percent BW/TBW/BAW damaged squares. The test was conducted in the presence ol high boll weevil population densities. Beet army worms were present in late Jul, Aug and Sep. Control of boll weevils and tarnished plant bugs was maintained on an “as needed” basis using the following treatments: Methyl parathion 4E, (0.33 lb (AI)/acre) on 11 Jul; Vydate 3.77CLV, (0.25 lb (AI)/acre) on 30 Jul; Methyl parathion 4E, (0.33 lb (AI)/acre) + Orthene 90S, (0.33 lb (AI)/acre) on 6 Aug; Methyl parathion 4E, (0.33 lb (AI)/acre) + Dimethoate 4E. (0.25 lb (AI)/acre) on 13 Aug; Baythroid 2E, (0.045 lb (AI)/acre) on 11 Sep. In addition to the overspray treatments listed above, the DP 5415 and NuCOTN 33B spray strategies (treatments 2 and 4) received the following insecticide treatments: Karate IE, (0.03 lb (AI)/acre) on 22 Jul; Karate IE, (0.03 lb (AI)/acre) on 25 Jul; Karate IE, (0.03 lb (AI)/acre) on 30 Jul; Karate IE, (0.03 lb (AI)/acre) on 5 Aug; Karate IE, (0.03 lb (AI)/acre) on 8 Aug. Cu-racron 8E, (1.0 lb (AI)/acre) + Pirate 3E, (0.2 lb (AI)/acre) + Vydate 3.77CLV, (0.25 lb (AI)/acre) on 15 Aug and Curacron 8E, (1.0 lb (AI)/acre) + Pi-rate 3 SC, (0.2 lb (AI)/acre) + Methyl parathion 4E (0.33 lb (AI)/acre on 26 Aug. Bollgard® threshold treatments 2% and 5% were sprayed with Karate IE, (0.033 lb (AI)/acre) on 8 Aug and Curacron 8E (1.0 lb (AI)/acre) + Pirate 3 SC (0.2 lb (AI)/acre) + Vydate 3.77 CLV, (0.25 lb (AI)/acre) on 15 Aug. All NuCOTN 33B threshold treatments were sprayed with Baythroid 2E (0.045 lb (AI)/acre), on 11 Sep. Plant terminals and squares were examined for BW/TBW eggs, larvae, damage and boll weevil damaged squares on 11, 24, 30 Jul, and 2, 8, 13 and 19 Aug. Terminals were examined on all dates except 19 Aug. The center four rows of the plots were harvested on 14 Oct to determine seedcotton yield. Plots were harvested using a John Deere spindle type picker. Yields were converted to lb seedcotton/acre.

scholarly journals Evaluation of Scout X-Tra and Decis Formulations Against Bollworm and Tobacco Budworm, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 206-206
Author(s):  
B. R. Leonard ◽  
C. A. White ◽  
J. B. Graves ◽  
J. H. Pankey
Keyword(s):  
Delivery System ◽  
Treatment Efficacy ◽  
Methyl Parathion ◽  
Boll Weevil ◽  
Test Area ◽  
Compressed Air ◽  
Tobacco Budworm ◽  
Control Treatment ◽  
Hollow Cone ◽  
Supplemental Irrigation

Abstract Cotton was planted 2 Jun into plots consisting of 4 rows (40 inch centers) × 50 ft. Treatments were arranged in an RCB design with 4 replications. Applications were made with a high clearance sprayer and compressed air delivery system calibrated to deliver 6 gal total spray/acre through Teejet X- 8 hollow cone nozzles (2/row) at 46 psi. Insecticide treatments were applied on 12, 15, 22 Aug. Methyl parathion 4 EC (0.33 lb (AI)/acre) was applied on an “as needed” basis for boll weevil control. Treatment efficacy was determined by examining 50 squares for evidence of damage. The center two rows of each plot were mechanically harvested on 12 Oct to estimate seedcotton yields. The test area received 0.11, 1.9 and 0.13 inches rainfall on 13, 20, 21 Aug, respectively. Supplemental irrigation was provided by an overhead system sprinkler “as needed” during the season, but not within 48 h of treatment applications.

scholarly journals The Effect of Adjuvants on Foliar Insecticide Efficacy Against Thrips in Cotton, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 250-250
Author(s):  
J. H. Fife ◽  
B. R. Leonard ◽  
K. D. Torrey
Keyword(s):  
Delivery System ◽  
Cotton Seed ◽  
Compressed Air ◽  
Research Station ◽  
Silt Loam ◽  
Seedling Disease ◽  
Insecticide Efficacy ◽  
Whole Plant

Abstract Cotton seed was planted in a Gigger silt loam on 11 May at the Macon Ridge location of the Northeast Research Station. The seed was treated with Orthene 80S (8 oz form/cwt seed) and Terraclor Super X (10 lb form/acre) was applied at planting to reduce seedling disease problems. Plots in this test consisted of 2 rows (40 inch centers) X 25 ft. Treatments were arranged in a RCB with 4 replications. Insecticides were applied with a tractor mounted boom equipped with compressed air delivery system calibrated to deliver 10 gpa through Teejet TVS 8001 flat fan nozzles (2/row) at 38 psi. Plots were treated on 25 May and sampled on 28 May (3 DAT), 30 May (5 DAT) and 1 Jun (7 DAT). Treatments were evaluated by randomly collecting 10 plants in each plot and processing samples with whole plant washing procedures. These plots received 0.23 inches of rainfall on 31 May and 0.58 inch of rainfall on 1 Jun. Data were analyzed with ANOVA, and means were separated according to DMRT.

scholarly journals Evaluation of Selected Insecticides and Insecticide Combinations Against Boll Weevil, Bollworm and Tobacco Budworm, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 224-224
Author(s):  
J. B. Graves ◽  
B. R. Leonard ◽  
P. A. Clay ◽  
E. Burris
Keyword(s):  
Soil Moisture ◽  
Delivery System ◽  
Methyl Parathion ◽  
Cultural Practices ◽  
Boll Weevil ◽  
Tobacco Budworm ◽  
Silt Loam ◽  
Seed Cotton ◽  
Hollow Cone ◽  
High Clearance

Abstract Cotton was planted in a Gigger-Gilbert silt loam on 2 Jun. Plots consisted of 4 rows on 1.02 m centers × 15.2 m. Treatments were arranged in a RCBD with 4 replications. Field preparation and plot maintenance followed conventional cultural practices. Plots were irrigated to maintain satisfactory soil moisture. All treatments were applied with a high clearance sprayer equipped with a CO2 charged delivery system calibrated to deliver 56.1 liters total spray/ha through TX-8 hollow cone nozzles (2/row) at 3.2 kg/cm2. Treatments were applied on 2, 5 and 16 Aug and evaluated on 5, 9 and 20 Aug (3, 4 and 4 DAT respectively) by visually examining 25 terminals per plot (randomly selected from middle 2 rows of each plot) for eggs, damage and live larvae and 25 squares per plot for live larvae and bollworm-tobacco budworm and boll weevil damage. The center 2 rows of each plot were mechanically harvested on 8 Oct to estimate seed cotton yields. The plots received 5.3 cm rainfall on 6 Aug and a trace of rainfall on 18, 19 and 20 Aug. Methyl parathion 4E (0.37 kg [AI]/ha) was applied on 23 Jul and 10, 24 and 28 Aug to all plots for boll weevil suppression.

Evaluation of Thrips Densities in At-Planting Seed and Soil Treatments on Gigger Silt Loam, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 245-245
Author(s):  
D. R. Cook ◽  
E. Burris ◽  
B. R. Leonard ◽  
J. B. Graves
Keyword(s):  
Cotton Seed ◽  
Silt Loam ◽  
Seed Cotton ◽  
Seeding Rate ◽  
Spray System ◽  
Whole Plant ◽  
The Press ◽  
Major Pest ◽  
Loam Soil ◽  
Spray Control

Abstract Plots were replicated four times in a RCB design and were four rows wide (40 inch spacing) X45 ft. Stoneville 474 cotton seed of the same seed lot was planted on a Gigger silt loam soil on 7 May. The seeding rate was 4 seed/row ft. Cotton seed was planted with a John Deere 7300 series planter which was equipped with 10 inch seed cones mounted to replace the seed hoppers. Granular in-furrow treatments were applied with standard granular applicators. In-furrow spray treatments were applied with a CO2 charged spray system through 25015 nozzles (1/row) mounted in front of the press wheels. The spray tips were turned to spray across the furrow and calibrated to deliver 5 gpa finished spray. Control of thrips was assessed by randomly selecting 5 plants per plot on 20, 24, 28, and 31 May and 5 and 9 Jun. Plant samples were processed by using whole plant washing procedures to remove insects. Major pest and/or secondary pest control was initiated in Jun and continued on an “as needed” basis through Aug. Percentage of open bolls was determined by counting all open and unopened bolls within a 3.0 m section of a center row on 18 Sep. Plots were harvested on 26 Sep and 10 Oct. These data were subjected to appropriate calculations to determine percent first harvest. The center two rows were mechanically harvested using a John Deere spindle type picker. Yields were converted to lbs seed cotton/acre.

Effect of Spraying Foliar with Humus and Izomen Biostimulants on Some Vegetative and Flowering Parameters of Freesia hybrida L.

2019 ◽  
Vol 9 (2) ◽  
pp. 240-246
Author(s):  
Neveen Anwer Abdalla
Keyword(s):  
Plant Height ◽  
Landscape Design ◽  
Vase Life ◽  
College Of Agriculture ◽  
Flowering Date ◽  
Freesia Hybrida ◽  
Loam Soil ◽  
Number Of Leaves ◽  
The University

The experiment has been conducted in the nursery of the Department of Horticulture and Landscape Design, College of Agriculture, the University of Basrah to study the effect of Spraying foliar of the biostimulants Izomen and Humus on the growth and flowering of Freesia plants. The corms in similar size were planted in pots with a diameter and height of 25 cm, which filled with 2.5 kg of sterilized loam soil. After 50 days of planting, the plants sprayed with Humus at 0, 1.5, 2.5 ml L-1 and after five days sprayed with Izomen at 0, 1.5, 2.5 ml L-1 The different concentrations of biostimulants are sprayed three times, the period between one spray and another 15 is days. The results showed that the spraying of Humus at 2.5 ml L-1 significantly increased the plant height, the number of leaves and the leaf content of chlorophyll recorded (29.56 cm, 8.33 and 58.43%) respectively. Moreover, it is recorded early the flowering date (130 days), and the highest flowering mean is (2.12 inflorescence/plant) and the highest period of the remained flowers on the plant and the vase life (10 and 8 days) respectively. The effects of both Humus and Izomen were similar. In addition to the highest mean of their interaction at 2.5 ml L -1for all the studied traits.

Aspects of Structure that Affect Germination in a Silt Loam Soil

1954 ◽  
Vol 18 (2) ◽  
pp. 219-221 ◽  
Author(s):  
C. S. Slater ◽  
Alvaro Rodriguez
Keyword(s):  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil

Chloride and Lithium Transport in Large Arrays of Undisturbed Silt Loam and Sandy Loam Soil Columns

2004 ◽  
Vol 3 (1) ◽  
pp. 316
Author(s):  
M. Saleem Akhtar ◽  
Tammo S. Steenhuis ◽  
Brian K. Richards ◽  
Murray B. McBride
Keyword(s):  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Silt Loam ◽  
Soil Columns ◽  
Lithium Transport ◽  
Loam Soil

MEASURING AND MODELING ROOT WATER UPTAKE BASED ON 36CHLORIDE DISCRIMINATION IN A SILT LOAM SOIL AFFECTED BY GROUNDWATER

Soil Science ◽  
1994 ◽  
Vol 158 (2) ◽  
pp. 97-105 ◽  
Author(s):  
U. SCHMIDHALTER ◽  
H. M. SELIM ◽  
J. J. OERTLI
Keyword(s):  
Water Uptake ◽  
Root Water Uptake ◽  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil
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