scholarly journals Comparison of Cspw Damage on Gaucho Treated Canola

1997 ◽  
Vol 22 (1) ◽  
pp. 206-206
Author(s):  
D. E. Bragg
Keyword(s):  
Seed Treatment ◽  
Yield Data ◽  
Untreated Check ◽  
Small Plot

Abstract Gaucho 75 ST at a rate of 12 oz Al/cwt was applied as seed treatment. Canola was seeded with a small plot drill on 30 May at 6 lb/acre, with the Gaucho treatment and an untreated check in a RCBD 4 replicated plot consisting of 6 X 20 ft replicates. At 80% dark seed, the Canola was swathed to dry. Counts of CSPW exit holes per 100 pods were made per replicate. Samples of m2 size per replicate were threshed in a stationary thresher to obtain yield data.

scholarly journals Control of Insects on Lentils, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 249-249
Author(s):  
D. E. Bragg ◽  
J. W. Burns
Keyword(s):  
Seed Treatment ◽  
Yield Data ◽  
Untreated Check ◽  
Pre Treatment

Abstract Plots were established 12 May near Albion, WA, on the Mills-Farr farm in a RCBD with 4 replicates of 6 X 10 ft. each. Seven insecticide treatments and an untreated check were used, with Gaucho 480 applied as a seed treatment at 0.5 and 1.0 oz (AI)/cwt. Foliar treatments were applied at the appearance of PA ca. 40-DAE using a CO2-powered backpack sprayer at 20 gpa at 20 psi. All treatments were rated by counts of PA per 20 cm terminal stem 4 per replicate at pre-treatment, PrCt, 2, 5, 7, 10, and 15 DAT. Counts of (TPB) damaged lentils/100 lentil sample per replicate were made at harvest. Yield data in oz lentils per replicate were collected by threshing through a stationary thresher.

scholarly journals Effects of Clariva Complete Beans Seed Treatment on Heterodera glycines Reproduction and Soybean Yield in Iowa

2018 ◽  
Vol 19 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Kaitlyn M. Bissonnette ◽  
Christopher C. Marett ◽  
Mark P. Mullaney ◽  
Gregory D. Gebhart ◽  
Peter Kyveryga ◽  
...  
Keyword(s):  
Soybean Cyst Nematode ◽  
Seed Treatment ◽  
Heterodera Glycines ◽  
Soil Samples ◽  
Population Densities ◽  
Reproductive Factor ◽  
Yield Data ◽  
Soybean Yield ◽  
Small Plot ◽  
Moderately Resistant

In recent years, nematode-protectant seed treatments have become available to supplement resistant soybean cultivars to manage soybean cyst nematode (Heterodera glycines; SCN). Twenty-seven small-plot and 18 strip-trial experiments were conducted comparing the effects of Clariva Complete Beans (CCB) and CruiserMaxx Advanced plus Vibrance (CMV) on SCN reproduction and soybean yield on a moderately resistant (2014) and resistant (2015 to 2016) soybean cultivar. Yield data were collected, and an SCN reproductive factor was calculated by dividing final (at harvest) SCN egg population densities by initial (at planting) population densities from soil samples collected in each small plot or sampled area in the strip trials. Relative to the CMV treatment, CCB significantly decreased SCN reproductive factor in two small-plot experiments (one each in 2014 and 2015) but not in any of the strip trials in any year. Soybean yields were significantly greater with CCB versus CMV in 5 of the 18 strip trials but not in any of the small-plot experiments, even when there were significant decreases in SCN reproduction. For unknown reasons, CCB significantly decreased yields in two small-plot experiments and at one strip-trial location. In summary, the effects of CCB seed treatment on SCN reproduction and soybean yields were variable in the years that these experiments were conducted in Iowa.

scholarly journals Crop Response to Leaf and Seed Applications of the Biostimulant ComCat® under Stress Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1161
Author(s):  
Roland Gerhards ◽  
Fructueuse N. Ouidoh ◽  
André Adjogboto ◽  
Vodéa Armand Pascal Avohou ◽  
Berteulot Latus Sètondji Dossounon ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Crop Production ◽  
Field Experiments ◽  
Nutrient Deficiency ◽  
Natural Compounds ◽  
Application Rate ◽  
Winter Barley ◽  
Block Designs ◽  
Crop Response ◽  
Yield Data

Although clear evidence for benefits in crop production is partly missing, several natural compounds and microorganisms have been introduced to the market as biostimulants. They are supposed to enhance nutrient efficiency and availability in the rhizosphere, reduce abiotic stress, and improve crop quality parameters. Biostimulants often derive from natural compounds, such as microorganisms, algae, and plant extracts. In this study, the commercial plant extract-based biostimulant ComCat® was tested in two field experiments with maize in the communities of Banikoara and Matéri in Northern Benin and six pot experiments (four with maize and two with winter barley) at the University of Hohenheim in Germany. Maize was grown under nutrient deficiency, drought, and weed competition, and winter barley was stressed by the herbicide Luximo (cinmethylin). ComCat® was applied at half, full, and double the recommended field rate (50, 100, and 200 g ha−1) on the stressed and unstressed control plants as leaf or seed treatment. The experiments were conducted in randomized complete block designs with four replications. The above-ground biomass and yield data of one experiment in Benin were collected. The biostimulant did not promote maize and winter barley biomass production of the unstressed plants. When exposed to stress, ComCat@ resulted only in one out of eight experiments in higher barley biomass compared to the stressed treatment without ComCat® application. There was a reduced phytotoxic effect of cinmethylin after seed treatment with ComCat®. Crop response to ComCat® was independent of the application rate. Basic and applied studies are needed to investigate the response of crops to biostimulants and their mechanisms of action in the plants before they should be used in practical farming.

scholarly journals Length of Efficacy for Control of Curly Top in Sugar Beet With Seed and Foliar Insecticides

Plant Disease ◽  
2016 ◽  
Vol 100 (7) ◽  
pp. 1364-1370 ◽  
Author(s):  
Carl A. Strausbaugh ◽  
Erik J. Wenninger ◽  
Imad A. Eujayl
Keyword(s):  
Sugar Beet ◽  
Host Resistance ◽  
Seed Treatment ◽  
Field Experiments ◽  
Block Design ◽  
Root Yield ◽  
Pyrethroid Insecticides ◽  
Beet Curly Top Virus ◽  
Randomized Complete Block Design ◽  
Untreated Check

Curly top in sugar beet caused by Beet curly top virus (BCTV) is an important yield-limiting disease that can be reduced via neonicotinoid and pyrethroid insecticides. The length of efficacy of these insecticides is poorly understood; therefore, field experiments were conducted with the seed treatment Poncho Beta (clothianidin at 60 g a.i. + beta-cyfluthrin at 8 g a.i. per 100,000 seed) and foliar treatment Asana (esfenvalerate at 55.48 g a.i./ha). A series of four experiments at different locations in the same field were conducted in 2014 and repeated in a neighboring field in 2015, with four treatments (untreated check, Poncho Beta, Asana, and Poncho Beta + Asana) which were arranged in a randomized complete block design with eight replications. To evaluate efficacy, viruliferous (contain BCTV strains) beet leafhoppers were released 8, 9, 10, or 11weeks after planting for each experiment, which corresponded to 1, 2, 3, and 4 weeks after Asana application. Over both years, in 30 of 32 observation dates for treatments with Poncho Beta and 14 of 16 observation dates for Asana, visual curly top ratings decreased an average of 41 and 24%, respectively, with insecticide treatments compared with the untreated check. Over both years, in eight of eight experiments for treatments with Poncho Beta and six of eight experiments for Asana, root yields increased an average of 39 and 32%, respectively, with treatment compared with the untreated check. Over both years, the Poncho Beta treatments increased estimated recoverable sucrose (ERS) yield by 75% compared with the untreated check for weeks 8 and 9. By week 10, only the Poncho Beta + Asana treatment led to increases in ERS in both years, while the influence of increasing host resistance may have made other treatments more difficult to separate. When considering curly top symptoms, root yield, and ERS among all weeks and years, there was a tendency for the insecticides in the Poncho Beta + Asana treatment to complement each other to improve efficacy.

Effect of Oil Cakes and Bio-agents Each Alone and in Combination for Management of Root Knot Nematode (Meloidogyne incognita) in Green Gram

2021 ◽  
Vol 12 (5) ◽  
pp. 286-294
Author(s):  
Poornata Jena ◽  
◽  
N. K. Sahoo ◽  
J. K. Mahalik ◽  
◽  
...  
Keyword(s):  
Plant Growth ◽  
Chlorophyll Content ◽  
Meloidogyne Incognita ◽  
Seed Treatment ◽  
Growth Parameters ◽  
Green Gram ◽  
Root Knot Nematode ◽  
Neem Cake ◽  
Untreated Check ◽  
Am Fungus

A pot experiment was carried out in the net house of Department of Nematology, OUAT, Bhubaneswar, Odisha, India during June to August, 2017 on the application of oilcakes (mustard cake and neem cake) and bio-agents (Trichoderma viride, Glomus fasciculatum, Rhizobium leguminosarum) each alone and in combination for the management of root knot nematode (Meloidogyne incognita) in green gram. Result of the experiment indicated that soil application of mustard or neem cake @ 50 g m-2 with AM fungus (Glomus fasciculatum) @ 5 g m-² and seed treatment of Rhizobium @ 25 g kg-1 of green gram seed declined the root knot nematode population, number of galls plant-1, number of eggmass plant-1and root knot index with corresponding increase of plant growth parameters and chlorophyll content in green gram plant as compared to other treatments and untreated check. But integration of mustard cake @ 50 g m-2 at 2 weeks prior to sowing with AM fungus @ 5 g m-2 at 10 days before sowing and seed treatment of Rhizobium @ 25 g kg-1 green gram seed exhibited the lowest M. incognita population 200 cc soil-1 (153.33 J2), number of galls plant-1 (7.0), number of eggmass plant-1 (2.0) and root knot index (2.0) reflecting enhancement of plant growth parameters, number of pods (206.67%), number of nodules (691.17%) over untreated check. This integrated management module also recorded maximum increase in the availability of NPK content in soil and chlorophyll content as compared to other treatments.

scholarly journals Performance and Profitability of Fungicides for Managing Soybean White Mold: A 10-Year Summary of Cooperative Trials

Plant Disease ◽  
2019 ◽  
Vol 103 (9) ◽  
pp. 2212-2220
Author(s):  
Jhonatan P. Barro ◽  
Maurício C. Meyer ◽  
Claúdia V. Godoy ◽  
Alfredo R. Dias ◽  
Carlos M. Utiamada ◽  
...  
Keyword(s):  
Low Cost ◽  
Disease Incidence ◽  
Network Models ◽  
Field Trials ◽  
White Mold ◽  
Yield Data ◽  
Soybean Price ◽  
Cost Treatment ◽  
Untreated Check ◽  
Yield Responses

White mold, caused by Sclerotinia sclerotiorum, is a yield-limiting disease of soybean in Brazil. Uniform fungicide trials have been conducted annually since 2009. Data from 74 cooperative field trials conducted over a 10-year period were assembled. We selected five fungicides applied two times around flowering: dimoxystrobin plus boscalid (DIMO+BOSC), carbendazim plus procymidone (CARB+PROC), fluazinam (FLUZ), fluopyram (FLUO), and procymidone (PROC). For comparison, thiophanate-methyl (TMET) applied four times was also included as a low-cost treatment. Network models were fitted to the log of white mold incidence (percentages) and log of sclerotia mass data (grams/hectare) and to the nontransformed yield data (kilograms/hectare) for each treatment, including the untreated check. Back-transformation of the meta-analytic estimates indicated that the lowest and highest mean (95% confidence interval [CI]) percent reductions in incidence and sclerotia mass were 54.2 (49.3 to 58.7) and 51.6% (43.7 to 58.3) for TMET and 83.8 (79.1 to 87.5) and 87% (81.9 to 91.6) for CARB+PROC, respectively. The overall mean (95% CI) yield responses ranged from 323 kg/ha (247.4 to 400.3) for TMET to 626 kg/ha (521.7 to 731.7) for DIMO+BOSC, but the variance was significantly reduced by a binary variable (30% threshold) describing disease incidence in the untreated check. On average, an increment of 352 kg/ha was estimated for trials where the incidence was >30% compared with the low-disease scenario. Hence, the probability of breaking even on fungicide costs for the high-disease scenario was >65% for the more effective, but more expensive fungicide (FLUZ) than TMET. For the low-disease scenario, profitability was less likely and depended more on variations in fungicide cost and soybean price.

Strategies for controlling western corn rootworm (Diabrotica virgifera virgifera)

2005 ◽  
Vol 53 (1) ◽  
pp. 71-79 ◽  
Author(s):  
E. Széll ◽  
I. Zsellér ◽  
G. Ripka ◽  
J. Kiss ◽  
G. Princzinger
Keyword(s):  
Life Cycle ◽  
Seed Treatment ◽  
Large Scale ◽  
Insect Pest ◽  
Diabrotica Virgifera Virgifera ◽  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Diabrotica Virgifera ◽  
Non Profit ◽  
Small Plot

Western corn rootworm (WCR) first appeared in Europe near Belgrade airport in 1992. The first adult of this species was found near Mórahalom, in the southern part of Hungary, on 30th June 1995. Small-plot trials were started in Szeged (Cereal Research Non-Profit Co.) and large-scale trials in Mezohegyes (Ménesbirtok Ltd.) in 1996 to elaborate strategies to control this insect pest. To make the work more efficient, eight experts working at different institutions formed a team. At the same time, monitoring was begun on when and where the insect appeared and in what numbers. The experiments were adapted to the life cycle of the species. WCR has one generation per year, laying eggs that overwinter. Larvae begin to hatch in late May to mid-June. Adults emerge by mid-July and survive till early October. They lay eggs in abundance from mid-July to late August.  Trials were conducted to control WCR both with and without chemicals. For adult control pesticides were sprayed from an aircraft or using a field sprayer. Larval control involved seed treatment with insecticide or the use of soil insecticide at planting or at cultivation.

Effect of Insecticide Treatments and Environmental Factors on Thrips Populations, Plant Growth and Yield of Cotton

2002 ◽  
Vol 37 (4) ◽  
pp. 308-316 ◽  
Author(s):  
J. C. Faircloth ◽  
J. R. Bradley ◽  
J. W. Van Duyn
Keyword(s):  
Environmental Factors ◽  
Seed Treatment ◽  
Field Experiments ◽  
Foliar Spray ◽  
Growth And Yield ◽  
Branch Number ◽  
Thrips Species ◽  
Fruiting Branch ◽  
Untreated Check ◽  
Accumulated Rainfall

Field experiments were conducted in 1997–1999 in Washington Co., NC, to examine how cotton, Gossypium hirsutum, is affected by thrips species composition and abundance, environmental factors, and insecticide applications. Populations of adult and juvenile thrips were monitored in seedling cotton treated with insecticide applications of either imidacloprid as a seed treatment, acephate as a foliar spray, or aldicarb applied in-furrow. The number of plants per 3.05 row-m, location of the first fruiting branch, number of open bolls per 1.52 row-m, yields, accumulated degree-d 60′s (DD60′s), and accumulated rainfall were recorded each year the studies were conducted. Aldicarb and acephate provided better thrips control than did imidacloprid in all 3 yrs. Thrips species ratios differed among years. In 1997, the aldicarb treatment resulted in a better “earliness profile” (lower fruit set and more early opening bolls) than either acephate or imidacloprid, while in 1998 and 1999 there were few differences in these plant parameters. In 1997, all insecticide treatments resulted in statistically higher yields compared with the untreated check. Accumulated DD60′s were consistently higher in 1998 and 1999 than in 1997 after the first thrips sampling date. Cumulative rainfall appeared to be inversely associated with juvenile thrips populations.

scholarly journals Control of Seed Transmission of Cylindrocladium parasiticum in Peanut with Seed Treatment Fungicides

2003 ◽  
Vol 30 (2) ◽  
pp. 128-133
Author(s):  
D. L. Glenn ◽  
P. M. Phipps ◽  
R. J. Stipes
Keyword(s):  
Seed Treatment ◽  
Standard Treatment ◽  
Seed Transmission ◽  
Field Trials ◽  
Selective Medium ◽  
Significant Suppression ◽  
Greenhouse Trial ◽  
Cylindrocladium Parasiticum ◽  
Untreated Check ◽  
Peanut Cultivars

Abstract Seeds of peanut cultivars VA 98R and NC-V11 with speckled testae were treated with fungicide and assayed on a selective medium to determine the viability of Cylindrocladium parasiticum. The fungus was isolated from 78 and 90% of the untreated speckled seed of the respective cultivars. Seed treatment with captan + pcnb + carboxin, fludioxonil, captan, and thiophanate methyl significantly reduced recovery of the pathogen in both cultivars. Speckled seed of VA 98R and NC-V11 were treated with fungicides and planted in greenhouse and/or field trials in Suffolk, VA. Plants became infected with C. parasiticum after treated and untreated speckled seed were planted in steam-treated soil in the greenhouse. In one trial, seed treatment with fludioxonil, tebuconazole, and LS 176 significantly reduced taproot colonization by C. parasiticum compared to the untreated check. In a second greenhouse trial, only fludioxonil provided significant suppression of disease. In the field, treatment with fludioxonil, thiram, and tebuconazole significantly lowered Cylindrocladium black rot (CBR) incidence compared to the untreated check. Thiram significantly reduced taproot colonization compared to all treatments except fludioxonil. Based on the present study, the addition of thiram and/or fludioxonil to the standard treatment of captan + pcnb + carboxin may offer the best protection against seed transmission of C. parasiticum.

scholarly journals COLORADO POTATO BEETLE CONTROL WITH CYROMAZINE

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 628e-628 ◽  
Author(s):  
J.D. Abbott ◽  
L. T. Thetford
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Total Yield ◽  
Insect Growth Regulator ◽  
Insect Feeding ◽  
Potato Leaf ◽  
Egg Hatch ◽  
Potato Beetle ◽  
Untreated Check ◽  
Small Plot

Cyromazine is a triazine molecule with insect growth regulator properties being developed for control of Colorado potato beetle (Leptinotarsa decemlineata Say) (CPB) in vegetables. Research presented focuses primarily on results with potato (Solanum tuberosum L.), however, crop safety has been observed in other crops within the Solanaceae. Several trials were conducted in PA and NY during 1991 to examine the rates and timing necessary to control CPB in potatoes. Data from replicated small plot trials and non-replicated large block trials are included. Rates examined ranged 70 to 560 g ai na-1 applied alone or in combination with a pyrethroid or Bt. Comparisons were made with insecticides presently registered for CPB control in potatoes and cyromazine compared quite favorably. Two applications per CPB generation were made, the first at the beginning of CPB egg hatch and a second 7-16 days later for each generation. This application schedule provided excellent (90%) control of CPB larvae. The reduction in larvae also resulted in a reduction in adult CPB and potato leaf area damaged through insect feeding. In the test conducted in PA, an increase in size and number of tubers was observed when plants were treated with cyromazine. -These increases resulted in a 23-28% increase in total yield compared to that obtained from the untreated check plots.

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