scholarly journals Granular and Liquid Insecticide Performance Against Corn Rootworm, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 198-198
Author(s):  
A. M. Journey ◽  
K. R. Ostlie
Keyword(s):  
Agricultural Research ◽  
Row Spacing ◽  
Research Station ◽  
Corn Rootworm ◽  
Silt Loam ◽  
University Of Minnesota ◽  
The Press ◽  
Loam Soil ◽  
The University ◽  
Higher Sensitivity

Abstract Experimental plots measuring 2 rows (30-inch row spacing) by 50 ft were planted on 12 May in a Waukegan silt loam soil at the University of Minnesota Agricultural Research Station, Rosemount. Treatments were arranged in a RCBD with 4 replications. Granular insecticides were applied with a modified Noble applicator at planting, either banded ahead of the press wheel or in furrow. Postemergence (25 Jun) sidedress applications of liquid insecticides were made with a CO2-powered backpack sprayer at 20 gpa. Percent lodging was determined on 16 Aug. On 25 Aug, 5 roots from each plot were dug, washed, and rated using the Iowa 1-6 scale (with half-point increments for higher sensitivity).

Corn Rootworm and European Corn Borer Control in Pennsylvania, 1992

1994 ◽  
Vol 19 (1) ◽  
pp. 216-216
Author(s):  
D. D. Calvin ◽  
P. B. Rebarchak ◽  
S. M. Spangler ◽  
G. W. Roth ◽  
L. Hoffman ◽  
...  
Keyword(s):  
European Corn Borer ◽  
Granular Soil ◽  
Corn Rootworm ◽  
Silt Loam ◽  
Corn Borer ◽  
Silt Loam Soil ◽  
The Press ◽  
Loam Soil ◽  
Rock Springs

Abstract Thirteen corn rootworm granular soil insecticide treatments were evaluated on a Hagerstown silt loam soil near Rock Springs, PA, during 1992. A RCBD with 5 replications was used. Insecticides and rates were applied in-furrow or as a T-band application. Plots were 39 ft × 5 ft wide (2 rows). Treatments were applied using a Max Emerge John Deere 7000® corn planter on 20 May. T-band applications were applied in 7 inch bands over the row and into the furrow ahead of the press wheel, and in-furrow applications were directed into furrow in front of the press wheel.

scholarly journals Corn Rootworm Control, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 233-233
Author(s):  
S. M. Spangler ◽  
D. D. Calvin ◽  
T. Grove ◽  
D. Lehto ◽  
P. R. Rebarchak
Keyword(s):  
Grain Weight ◽  
Row Spacing ◽  
Corn Rootworm ◽  
Silt Loam ◽  
Continuous Corn ◽  
Research Site ◽  
Silt Loam Soil ◽  
Central Pennsylvania ◽  
Rating Method ◽  
Loam Soil

Abstract The evaluation was carried out on a Hagerstown silt loam soil in central Pennsylvania, near University Park, and planting was done on 22 May in continuous corn. The design was RCB with five replicates of each treatment. Plots were 20 ft long X 2 rows wide, with row spacing at 30 inches. Granular treatments were applied at planting using a Max Emerge John Deere 7000R corn planter. T-band applications were applied in 7-inch bands over the row and into the furrow, and in-furrow applications were directed into the furrow only. Furadan 4F was broadcast on 20 Jun, and cultivation for the Furadan 4F + cultivation treatment was done the same day. The Regent 80 WG treatment was applied at a rate of 2 gal water per acre as a spray directed into the furrow. Rainfall totals for the research site during the trial were: 3.03 inches (May), 4.95 inches (Jun), 5.20 inches (Jul), 5.53 inches (Aug), 12.55 inches (Sep), and 4.97 inches (Oct. Plots were rated with the Towa’ rating method on 30 Jul (5 plants/plot), and by quantifying yield on 15 Nov (total grain weight/plot). Final yields were expressed as grain acre at 15.5% moisture.

A New Species of Catallagia Rothschild from Arizona (Siphonaptera: Hystrichopsyllidae: Neopsyllinae)

1960 ◽  
Vol 92 (10) ◽  
pp. 768-770 ◽  
Author(s):  
George P. Holland
Keyword(s):  
New Species ◽  
Natural History ◽  
Research Station ◽  
University Of Minnesota ◽  
American Museum ◽  
The University ◽  
A New Species

In 1957 James R. Beer, Edwin F. Cook and Robert G. Schwab, of the University of Minnesota, conducted an investigation of mammals and their ectoparasites in the Chiricahua Mountains of southeastern Arizona. The area studied included varied habitats in the general vicinity of the Southwestern Research Station of the American Museum of Natural History at Portal. An account of this investigation has now been published (Beer et al., 1959).

scholarly journals Mechanical Root-Disruption Practices and Their Effect on Circling Roots of Pot-Bound Tilia Cordata Mill. and Salix Alba L. ‘Niobe’

2007 ◽  
Vol 33 (1) ◽  
pp. 43-47
Author(s):  
Patrick Weicherding ◽  
Chad Giblin ◽  
Jeffrey Gillman ◽  
David Hanson ◽  
Gary Johnson
Keyword(s):  
Root Growth ◽  
Root Pruning ◽  
Tilia Cordata ◽  
University Of Minnesota ◽  
Fibrous Root ◽  
Salix Alba ◽  
Loam Soil ◽  
Disruption Method ◽  
The University ◽  
Pruning Techniques

Pot-bound Tilia cordata Mill. and Salix alba L. ‘Niobe’ were planted in a Waukegan silt loam soil in June 2003 at the University of Minnesota TRE nursery in St. Paul, Minnesota. Before planting, the root balls of the container-grown plants were mechanically disrupted using one of three standard root pruning practices recommended to correct circling roots: scoring (slicing), butterfly pruning, or teasing. Root balls on the controls were left undisturbed. The trees were harvested in October 2004. Roots growing beyond the original root ball were counted and measured for diameter growth to assess the effectiveness of the root pruning techniques in encouraging root growth outside of the original root ball. All root disruption treatments resulted in increased fibrous root growth, but no mechanical root disruption method was significantly better than root balls left undisturbed.

scholarly journals Efficacy of Hot Air as a Postharvest Disinfestation Treatment Against Thrips on Cut Chrysanthe-Mums, Hawaii, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 399-399
Author(s):  
A. H. Hara ◽  
B.K.S. Hu ◽  
T. Y. Hata
Keyword(s):  
Agricultural Research ◽  
Tap Water ◽  
Analysis Data ◽  
Research Station ◽  
Cross Contamination ◽  
Light Bulb ◽  
Hot Air ◽  
Efficacy Trials ◽  
Air Chamber ◽  
The University

Abstract Efficacy trials were conducted at the University of Hawaii at Manoa, Waiakea Agricultural Research Station in Hilo, HI. Flowers were harvested on 2 Apr from a commercial planting in Mt. View, HI, and transported to the Experiment Station for subsequent tests. Flower stems were divided into 18 groups arranged in 6 treatments with 3 replicates of 10 stems each and held in 19 liter buckets containing 11 liters of tap water. Flowers were treated on 3 Apr (rep 1) and 8 Apr (reps 2 and 3). Treatment consisted of placing the bucket of flowers in the hot air chamber at 44.4 °C, 60% r.h., 0.23 m3 s-1 fan circulation at 26 °C (measured) for 1-5 h at 1 h interval. The check was not treated. Immediately after treatment, flowers were enclosed in bags made from spunbonded polyester (Reemay 2006 UV [20 g/m2], DuPont Wilmington, DE) to prevent cross contamination. Twenty-four hours after treatment, thrips were extracted from 10 flowers (1 flower per stem) using Berlese funnels heated with a 60 watt incandescent light bulb. Thrips were collected in a 8:2:1:1 solution of ethanol, distilled H2O, acetic acid and glycerin. The number of adults and nymphs were counted and pooled for analysis. Data were subjected to ANOVA and means separated by Waller Duncan k-ratio t test k = 100.

scholarly journals Control of Western Corn Rootworm Larvae in West Central Nebraska, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 178-178
Author(s):  
R. C. Seymour ◽  
J. B. Campbell ◽  
R. J. Wright
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Central Research ◽  
Silt Loam ◽  
West Central ◽  
The University ◽  
Extension Center

Abstract Insecticides were applied to suppress larval rootworm populations in 2 fields in west central NE. Both fields located at the University of Nebraska West Central Research and Extension Center were composed of Cozad silt loam soils.

scholarly journals A preliminary report on the production characters of three types of cattle in Ghana.

1963 ◽  
Vol 11 (5) ◽  
pp. 364-377
Author(s):  
G. Montsma
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Agricultural Research ◽  
West African ◽  
Research Station ◽  
Insufficient Data ◽  
The West ◽  
Weight Growth ◽  
Before And After ◽  
The University

At the University of Ghana's Agricultural Research Station at Nungua observations were begun in 1957 on the performance of West African Shorthorn, N'Dama and Sokoto Gudali cattle. The main preliminary findings are discussed under the following headings: body weight, growth rate, milk yield, reproductive efficiency, and dentition and age. In spite of the fact that the N'Dama and West African Shorthorn are naturally small animals, body weight and growth rate could be substantially increased by better feeding. Insufficient data are as yet available on the Sokoto. Under the better-than-average feeding conditions at the station, av. body weight at 8 mths. was 305 lb. in the N'Dama, 340 lb. in the West African Shorthorn, and 470 lb. in the Sokoto. Maximum body weight at 8 mths. was 340, 360 and 550 lb. resp. In animals fed a concentrate supplement, av. 252-day milk yields per 100 lb. body weight were 295, 300 and 335 lb. for the N'Dama, West African Shorthorn and Sokoto resp. max. yields, expressed in a similar manner, being 416, 430 and 458 lb. resp. Milk yields were estimated by weighing the calves before and after suckling thrice daily for approx. 20 mins The av. calving percentages for the 3 breeds were 85, 83 and 76 resp. which are equivalent to calving intervals of 14-2, 14.5 and 15.8 mths. The av. age at 1st calving in the West African Shorthorn was estimated to be 3 yrs. (2.3-3.8). Insufficient data were available on the other 2 breeds. It is considered that, if adequately fed, heifers are capable of calving at 27-30 mths. of age. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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 Effects of Plant Pattern and Nitrogen Fertilizer on Yield and Yield Components of Silage Corn Cultivars

2016 ◽  
Vol 4 (1) ◽  
pp. 152
Author(s):  
Mohammad Hossein Haddadi ◽  
Masoud Mohseni
Keyword(s):  
Plant Height ◽  
Agricultural Research ◽  
Dry Weight ◽  
Forage Yield ◽  
Row Spacing ◽  
Research Station ◽  
Significant Difference ◽  
Leaf Yield ◽  
Ear Height ◽  
Better Than

To study effect of sowing pattern and nitrogen on maize silage yield and its dependents components a trial was done at split-split plot design in compeletly randomized block at four replications in Qrakheil(Qaemshahr) agricultural research station in 2015 in Iran. Row spacing was chosen as main plots including: 65cm, 75cm and 85cm.Two cultivars (Sc704 and Sc770) in sub plots and three levels of N (250, 350 and 450 kg ha1) in sub-sub plots were laid out. Silage forage yield, ear and dry ear yield, leaf and dry leaf yield, plant dry weight and stem and dry stem weight,plant height , ear height,kernel number in ear row and row number in ear were measured.The results indicated that row spacing, were not affected on investigated traits. While nitrogen effected on silage yield, ear and dry ear yield, leaf and dry leaf yield, plant dry weight and stem and dry stem weight, plant height and ear height and showed significant difference. Sc704 had significant difference on plant silage weight, dry and wet stem weight with Sc770. Amount of 350kg/ha nitrogen was caused the most silage yield (36.74t/ha) and plant dry weight (16.64 t/ha) that had not significant difference with usage of 450kg/ha nitrogen(16.46 t/ha). Amount of 450kg/ha nitrogen was caused the most silage yield (37.30t/ha) that had not significant difference with usage of 350kg/ha nitrogen (36.74 t/ha). The most silage yield (38.21t/ha) obtained from Sc704 that was better than Sc770 (34.22 t/ha). The most plant dry weight (16.54) obtained from Sc704 that had not significant difference with Sc770 (15.92 t/ha).

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