The residual activity of imidacloprid and thiamethoxam seed treatments on sugar beet pests: What are the real benefits of seed treatment?

2016 ◽  
Author(s):  
Helena Viric Gasparic
Keyword(s):  
Sugar Beet ◽  
Seed Treatment ◽  
Residual Activity ◽  
Seed Treatments ◽  
The Real

scholarly journals Insecticide Seed Treatments Reduced Crop Injury from Flumioxazin, Chlorsulfuron, Saflufenacil, Pyroxasulfone, and Flumioxazin + Pyroxasulfone + Chlorimuron in Soybean

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
N. R. Steppig ◽  
J. K. Norsworthy ◽  
R. C. Scott ◽  
G. M. Lorenz
Keyword(s):  
Seed Treatment ◽  
Residual Activity ◽  
Unintentional Injury ◽  
Field Trials ◽  
Soybean Seeds ◽  
Seed Treatments ◽  
Injury Reduction ◽  
Crop Injury ◽  
Postemergence Herbicides ◽  
Weed Resistance

With increased instances of weed resistance to applications of postemergence herbicides, the use of soil-applied herbicides that offer residual activity is becoming popular. Unfortunately, under some conditions, the use of residual herbicides can result in unintentional injury to crops. However, there are a number of ways to reduce these risks, including the use of in-crop herbicide safeners. Based on previous research conducted on rice, the potential may exist for crop injury from certain soil-applied herbicides to be reduced (safened) in seeds treated with insecticides. Field trials were conducted in Marianna, Arkansas, in 2015 and 2016, and near Colt, Arkansas, in 2016, to explore this possibility in soybean. Soybean seeds were treated with the insecticide thiamethoxam and subsequently the herbicides metribuzin, saflufenacil, pyroxasulfone, sulfentrazone, chlorimuron, flumioxazin, flumioxazin + pyroxasulfone + chlorimuron, mesotrione, and chlorsulfuron were applied immediately after planting. Of the nine herbicides evaluated, the insecticide reduced crop injury for flumioxazin, chlorsulfuron, saflufenacil, pyroxasulfone, and flumioxazin + pyroxasulfone + chlorimuron. The highest degree of injury reduction was seen 1 week after emergence (WAE) at Marianna, where injury from flumioxazin + pyroxasulfone + chlorimuron was reduced from 15% to 5%. Based on the results from this study, the insecticide seed treatment thiamethoxam may have the potential to safen soybean to applications of some soil-applied herbicides.

scholarly journals The Efficacy of Seed Treatments on Major Sugar Beet Pests: Possible Consequences of the Recent Neonicotinoid Ban

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1277
Author(s):  
Helena Viric Gasparic ◽  
Darija Lemic ◽  
Zrinka Drmic ◽  
Maja Cacija ◽  
Renata Bazok
Keyword(s):  
Sugar Beet ◽  
Eastern Europe ◽  
Seed Treatment ◽  
Climatic Conditions ◽  
Population Pressure ◽  
Southeast Europe ◽  
Seed Treatments ◽  
Climatic Regions ◽  
Flea Beetles ◽  
Alternative Solutions

Sugar beet production remains unprotected after the ban on neonicotinoids, while pest pressure is increasing. Although the organic approach to agriculture is highly welcomed, the question remains whether it will be possible to grow sugar beet without pesticides. The aim of this study is to determine the efficacy of seed treatments with neonicotinoids on the main sugar beet pests, to determine the susceptibility of the pests under the specific climatic conditions and to discuss possible consequences of the ban of neonicotinoids on the future of sugar beet production in southeast Europe. The study was conducted in two different climatic regions in Croatia in two consecutive years. The tested variants were: seed coated with imidacloprid, seed coated with a combination of thiamethoxam and teflutrin and untreated control. Our results showed that seed coatings with imidacloprid and thiamethoxam provided satisfactory protection against wireworms, flea beetles and sugar beet weevils at low population pressure. These pests are regular pests of sugar beet in southern and eastern Europe and therefore need to be controlled. Caterpillars and aphids were present in low populations, so the efficacy of the insecticides tested cannot be determined with certainty. A further research program is needed to find alternative solutions and develop easily implementable strategies for all sugar beet pests. We would propose an authorization of neonicotinoids for seed treatment of sugar beet in the regions with high infestation pressure of the main sugar beet pests.

scholarly journals Is there a risk to honeybees from use of thiamethoxam as a sugar beet seed treatment?

2021 ◽  
Author(s):  
Helen Thompson ◽  
Sarah Vaughan ◽  
Anne‐Katrin Mahlein ◽  
Erwin Ladewig ◽  
Christine Kenter
Keyword(s):  
Sugar Beet ◽  
Seed Treatment

scholarly journals Future of Insecticide Seed Treatment

2021 ◽  
Vol 13 (16) ◽  
pp. 8792
Author(s):  
Milorad Vojvodić ◽  
Renata Bažok
Keyword(s):  
Sugar Beet ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Seed Treatment ◽  
Negative Impact ◽  
Protective Measure ◽  
Lower Amount ◽  
Vegetable Crops ◽  
Good Efficacy ◽  
Active Substances

Seed treatment as a method of local application of pesticides in precise agriculture reduces the amount of pesticides used per unit area and is considered to be the safest, cheapest and most ecologically acceptable method of protecting seeds and young plants from pests in the early stages of their development. With the introduction of insecticides from the neonicotinoid group in the mid-1990s, the frequency of seed treatment increased. Due to suspected negative effects on pollinators, most of these insecticides are banned in the European Union. The ban has therefore led to a reduction in the number of active substances approved for seed treatment and to an increased re-use of active substances from the group of pyrethroids as well as other organophosphorus insecticides, which pose potentially very serious risks, perhaps even greater than those of the banned neonicotinoids. The objective of this review is to analyze the advantages and disadvantages of seed treatment and the potential role of insecticide seed treatment in reducing the negative impact of pesticides on the environment. The main disadvantage of this method is that it has been widely accepted and has become a prophylactic protective measure applied to almost all fields. This is contrary to the principles of integrated pest management and leads to an increased input of insecticides into the environment, by treating a larger number of hectares with a lower amount of active ingredient, and a negative impact on beneficial entomofauna. In addition, studies show that due to the prophylactic approach, the economic and technical justification of this method is often questionable. Extremely important for a quality implementation are the correct processing and implementation of the treatment procedure as well as the selection of appropriate insecticides, which have proven to be problematic in the case of neonicotinoids. The ban on neonicotinoids and the withdrawal of seed treatments in oilseed rape and sugar beet has led to increased problems with a range of pests affecting these crops at an early stage of growth. The results of the present studies indicate good efficacy of active ingredients belonging to the group of anthranilic diamides, cyantraniliprole and chlorantraniliprole in the treatment of maize, soybean, sugar beet and rice seeds on pests of the above-ground part of the plant, but not on wireworms. Good efficacy in controlling wireworms in maize is shown by an insecticide in the naturalites group, spinosad, but it is currently used to treat seeds of vegetable crops, mainly onions, to control onion flies and flies on other vegetable crops. Seed treatment as a method only fits in with the principles of integrated pest management when treated seeds are sown on land where there is a positive prognosis for pest infestation.

Effect of Seed Treatment on Early Season Brown Spot Caused by Septoria glycines of Soybean

2016 ◽  
Vol 17 (4) ◽  
pp. 223-228 ◽  
Author(s):  
Jean C. Batzer ◽  
Yuba R. Kandel ◽  
Carl A. Bradley ◽  
Martin I. Chilvers ◽  
Albert U. Tenuta ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Effective Concentration ◽  
Plant Age ◽  
Brown Spot ◽  
Control Treatment ◽  
Seed Treatments ◽  
Early Season ◽  
Colony Diameter ◽  
Progress Curve ◽  
Mist Chamber

Early season brown spot caused by Septoria glycines was compared in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, soybean fields planted with differing commercial seed treatments. Seed treatments that included fluopyram significantly reduced brown spot (P < 0.001). A greenhouse mist chamber experiment revealed that fluopyram seed treatment reduced the Area Under Disease Progress Curve of brown spot over a 6-week period (P < 0.001). Brown spot severity was unaffected by plant age at inoculation for the control treatment without fluopyram (P = 0.911); however, severity increased with plant age at inoculation for the fluopyram treatment (P = 0.009). The sensitivity of two S. glycines isolates to fluopyram was assessed by determining the effective concentration required to reduce its colony diameter growth in culture by 50% (EC50). Both isolates had an EC50 of 0.41 μg/ml of fluopyram. These results demonstrate that fluopyram seed treatment is effecttive at controlling early season brown spot in soybean. Accepted for publication 19 September 2016.

scholarly journals Evaluation of insecticidal seed treatments against white grub Holotrichia consanguinea Blachard infesting groundnut

2021 ◽  
Vol 10 (3) ◽  
pp. 206-210
Author(s):  
Bhut JB ◽  
◽  
Jethva DM ◽  
Naggana R ◽  
◽  
...  
Keyword(s):  
Adverse Effect ◽  
Seed Germination ◽  
Field Experiment ◽  
Seed Treatment ◽  
Yield Loss ◽  
White Grub ◽  
Seed Treatments

Field experiment on evaluation of insecticidal seed treatments against white grub Holotrichia consanguinea Blachard infesting groundnut was conducted during kharif 2018 and 2019 at farmers field. The nine insecticides evaluated as seed treatment against white grub infesting groundnut, the lowest per cent plant morality and number of grub/m2 was observed in treatment of clothianidin 50 WDG @ 2 g a.i. /kg and imidacloprid 40 + fipronil 40 WG @ 3 g a.i. /kg. These treatments were produced 2329 and 2296 yield of pod, 3970 & 3780 kg/ha yield of halum, respectively. Increased in yield over control in these treatments was recorded 57.79 and 55.56 per cent in pod, 76.29 and 64.65 per cent in halum. Whereas avoidable yield loss recorded of these treatments was recorded 36.63 and 35.71 per cent in pod, 43.27 and 39.27 per cent in halum. However, the highest 1:28.32 NICRB was recorded in treatment of chlorpyriphos 20 EC @ 30 ml a.i. /kg. The NICRB of clothianidin 50 WDG @ 2 g a.i. /kg and imidacloprid 40 + fipronil 40 WG @ 3 g a.i. /kg were recorded 1:14.95 and 1:9.20, respectively. The evaluated insecticides had no adverse effect on seed germination

scholarly journals Efficacy of Fungicidal Seed Treatments on Seed Borne Diseases of Green Gram

2020 ◽  
Vol 7 (3) ◽  
pp. 138-143
Author(s):  
A. J. Deshmukh ◽  
◽  
A. N. Sabalpara ◽  
R. P. Bambharolia ◽  
◽  
...  
Keyword(s):  
Leaf Spot ◽  
Seed Treatment ◽  
Leaf Blight ◽  
Green Gram ◽  
Seed Treatments ◽  
Thiophanate Methyl ◽  
Anthracnose Disease ◽  
Pooled Data ◽  
Alternaria Leaf Spot

The experiment was conducted to perceive the effect of fungicidal seed treatment on seed borne diseases of green gram on susceptible cv. GM-3 with nine different fungicides. Results revealed that dry seed treatment with either mix formulation of carbendazim + mancozeb or thiophanate methyl or carbendazim @ 2.5 g kg-1 seeds is very effective in field to control Macrophomina leaf blight, Alternaria leaf spot and Anthracnose diseases. Two years pooled data indicated that PDI of Macrophomina leaf bilght was significantly lower in dry seed treatment with carbendazim + mancozeb (0.99%, 12.90%) which was statistically at par with thiophanate methyl (1.54%, 13.80%) followed by carbendazim (0.99%, 14.06%) at 35 and 65 DAS, respectively. Two years pooled data of Alternaria leaf spot indicated that the PDI of was significantly lower in dry seed treatment with carbendazim + mancozeb (2.64%, 11.15%) which was statistically at par with thiophanate methyl (2.74%, 11.30%) followed by carbendazim (2.84%, 11.37%) at 35 and 65 DAS. Two years pooled data of Anthracnose disease indicated that the PDI of Anthracnose was significantly lower in dry seed treatment with carbendazim + mancozeb (0.81%, 6.71%).

scholarly journals PRAIRIE GRASS ESTABLISHMENT AFFECTED BY SEED TREATMENT AND SOWING DATE

1985 ◽  
pp. 141-146
Author(s):  
R.E. Falloon
Keyword(s):  
Seedling Establishment ◽  
Seed Treatment ◽  
Sowing Date ◽  
Seed Treatments ◽  
Head Smut ◽  
Sowing Dates ◽  
Prairie Grass ◽  
Soil Temperatures ◽  
Successful Establishment ◽  
Grass Establishment

Effects of two different fungicide seed treatments, inoculation of seed with teliospores of the head smut fungus (Ustilago bullata Berk.), and five different autumn sowing dates, on establishment of prairie grass (Bromus willdenowii Kunth cv. 'Grasslands Matua,'), were examined in a field trial. Seedling establishment was increased by thiram seed treatment and decreased by inoculation of seed with U. bullata. Greater numbers of seedlings established from early sowings, when soil temperatures were higher, than from late sowings. Suitable seed treatments to increase the likelihood of successful establishment of prairie grass are discussed. Keywords: Bromus willdenowii, seedling establishment, seed treatments, thiram, Ustilago bullata, sowing dates, soil temperatures

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.

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