scholarly journals Painted Containers: A New Method for Paclobutrazol Application

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 655e-655
Author(s):  
Claudio C. Pasian ◽  
Daniel K. Struve
Keyword(s):  
Growth Regulator ◽  
Growth And Development ◽  
New Method ◽  
Latex Paint ◽  
Application Method ◽  
Soil Drench ◽  
Application Methods ◽  
Effect On Growth

The effectiveness of two application methods of the growth regulator paclobutrazol on the growth of Chrysanthemum plants, Dendranthema ×grandiflora (Ramat) (cv. `Fina' and `Cream Dana') were compared. Plants were grown in containers with their interior covered by a mixture of flat latex paint and several concentrations of paclobutrazol (0, 5, 10, 20, 40, 80, 100, 150, 160, and 200 mg·L–1) or were treated with a soil drench of the growth regulator according to label recommendations (59 ml/container of paclobutrazol solution at 4 mg·L–1). Plants grown in containers with the paint–paclobutrazol mix at concentrations >80 mg·L–1 were shorter than plants given the control and paint only treatments but taller than plants given the drench treatment. Increasing paclobutrazol concentrations in paint from 100 to 150 and 200 mg·L–1 did not produce proportionately shorter plants. Paint alone had no effect on growth and development. Plants subject to growth regulator treatments appeared greener than the control plants. None of the plants given treatments with paint with or without paclobutrazol showed any sign of phytotoxicity. These results suggest the possibility of a new application method for systemic chemicals with the potential of reducing or eliminating worker protection standard restricted entry intervals and reducing the release of chemicals to the environment. Chemical name used: beta-[(4-chlorophenyl)methyl]-α-(1,1-dimethyl)-1H-1,2,4,-triazole-1-ethanol (paclobutrazol).

scholarly journals Effect of buprofezin on the growth, development and morphometric parameters of Spodoptera litura (Fabricius) (Order: Lepidoptera, Family: Noctuidae) adult

2019 ◽  
Vol 17 (4) ◽  
pp. 514-520
Author(s):  
Mst Rokeya Khatun ◽  
Gopal Das ◽  
Kazi Shahanara Ahmed ◽  
Hisashi Kato- Noguchi
Keyword(s):  
Relative Humidity ◽  
Topical Application ◽  
Growth Regulator ◽  
Growth And Development ◽  
Spodoptera Litura ◽  
Wing Length ◽  
Adult Weight ◽  
Application Method ◽  
Combined Application ◽  
Application Methods

The experiments were conducted to know the efficacy of Buprofezin (Award 40 SC), an insect growth regulator against 2nd instar larvae of Spodoptera litura (Fabricius) under laboratory conditions (insect rearing was done at room temperature and relative humidity that is 260C-300C and 65-80% relative humidity) at three different concentrations viz. 200, 400, and 600 ppm through three different application methods like direct or topical, indirect or leaf-dip and combined. The experiment was laid out in complete randomized design (CRD) with three replications and ten 2nd instar larvae of Spodoptera litura were used for each replication. Results revealed that this growth regulator strongly arrested the growth and development of S. litura (Fabricius) from larval stage to adult. The treated data were recorded after adult emergence and compared with untreated control adult. The results clearly showed that Buprofezin had significant effect on the inhibition of adult weight; wing length and width compared to control and consequence were clearly dose, time and method dependent. As well as we are hopeful because we found some abnormal adult from the treated larvae that may increase the potentiality of Buprofezin as an excellent tool of IPM. The maximum, 54.53% adult weight reduction was recorded from 600 ppm of Buprofezin through combined application method which was followed by leaf-dip (46.41%) and topical application method (39.86%). Similarly, 23.13% wing length and 22.27% wing width were inhibited when larvae were treated with 600 ppm through combined application method compared to control. The 2nd best result was found from 400 ppm and leaf-dip application method. The dose, 200 ppm and topical application method was found to be less effective compared to the rest of the two doses or two application methods. So this is the demand of the current situation to evaluate this selective bio-rational molecules against S. litura as the alternatives of conventional insecticides to combat resistance development, effective larval control, inhibition of growth and development, to keep the  natural enemies safe and fit these molecules in IPM packages individually or combindly. J Bangladesh Agril Univ 17(4): 514–520, 2019

scholarly journals A New Method of Applying Imidacloprid to Potted Plants for Controlling Aphids and Whiteflies

1997 ◽  
Vol 7 (3) ◽  
pp. 265-268 ◽  
Author(s):  
Claudio C. Pasian ◽  
Daniel K. Struve ◽  
Richard K. Lindquist
Keyword(s):  
Aphis Gossypii ◽  
New Method ◽  
Euphorbia Pulcherrima ◽  
Silverleaf Whitefly ◽  
Bemisia Argentifolii ◽  
Product Label ◽  
Latex Paint ◽  
Potted Plants ◽  
Application Method ◽  
Application Methods

The effectiveness of two application methods of the insecticide imidacloprid in controlling 1) melon aphids (Aphis gossypii Glover) on `Nob Hill' chrysanthemum (Dendranthema ×grandiflora Ramat) plants and 2) silverleaf whitefly (Bemisia argentifolii Bellows & Perring) on `Freedom Red' poinsettia (Euphorbia pulcherrima Wild.) were compared. Plants were grown in containers with their interior covered by a mixture of flat latex paint plus several concentrations of imidacloprid (0, 10, 21, 42, and 88 mg·L−1), or treated with a granular application of the insecticide (1% a.i.) according to label recommendations. All imidacloprid treatments effectively reduced aphid survival for at least 8 weeks. The two most effective treatments were the granular application (10 mg a.i.) and the 88-mg·L−1 treatment (0.26 mg a.i). All imidacloprid treatments effectively reduced whitefly nymph survival. The 42- and 88-mg·L−1 treatment and the granular application (1% a.i.) were equally effective in reducing nymph numbers in lower poinsettia leaves. None of the plants given treatments with paint exhibited any phytotoxicity symptoms. These results suggest the possibility of a new application method for systemic chemicals with the potential of reducing the release of chemicals to the environment. Paint and imidacloprid mixes are not described in any product label and cannot be legally used by growers. Chemical name used: 1-[(6-chloro-3-pyrimidil)-N-nitro-2-imidazolidinimine (imidacloprid)

scholarly journals Evaluation of paclobutrazol application method on quality characteristics of ornamental pepper

2017 ◽  
Vol 23 (3) ◽  
pp. 307 ◽  
Author(s):  
Christiane de Fátima Martins França ◽  
Lucas Cavalcante Da Costa ◽  
Wellington Souto Ribeiro ◽  
Teresa Drummond Correia Mendes ◽  
Mirelle Nayana De Sousa Santos ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Tap Water ◽  
Foliar Spray ◽  
Quality Characteristics ◽  
Application Method ◽  
Leaf Chlorophyll ◽  
Application Methods ◽  
Pepper Cultivar

The effects of three paclobutrazol (PBZ) application methods on ornamental characteristics of two pepper cultivars (‘Biquinho Vermelha’ and ‘Bode Amarela’) were evaluated. Plant growth regulator at 10 μM PBZ was added at transplanting by drenching 250 mL PBZ solution on the pot substrate, foliar spray of 10 mL PBZ solution or by submerging seedlings root + substrate for 10 seconds in the PBZ solution. Control plants were treated with tap water applied directly on the substrate. Plant height, canopy compactness, fruits and leaves number, and leaf chlorophyll content were evaluated when 50% of the plants had approximately 30% of mature fruits (commercial maturity). PBZ applied by drenching influenced positively the ornamental characteristics of ‘Bode Amarela’. Otherwise, the best PBZ application method for ‘Biquinho Vermelha’ was not established. The results suggest that search for suitable PBZ application method that no affects the pepper ornamental characteristics must be done specifically for each pepper cultivar.

scholarly journals Effect of Bioplex™ on Transplant Success and Recovery of Summer-dug Goldenraintree

2005 ◽  
Vol 23 (2) ◽  
pp. 59-62
Author(s):  
Jonathan D. Sammons ◽  
Daniel K. Struve
Keyword(s):  
Untreated Control ◽  
Foliar Spray ◽  
Transplant Survival ◽  
Soil Drench ◽  
Nursery Stock ◽  
Application Methods ◽  
Effect On Growth

Abstract Biostimulants are intended to reduce stress associated with non-dormant (summer-dug) harvest of field-grown nursery stock; however, the effectiveness of biostimulant treatment is uncertain. We tested the effects of three application methods of Bioplex™ (a biostimulant) on transpiration rates, transplant survival, and recovery of field-grown goldenraintree (Koelrueteria paniculata Laxm.), which is considered difficult to transplant and is rarely summer dug. Bioplex™ was applied as a foliar spray, soil drench, or a combination of foliar spray and soil drench. Bioplex™ reduced transpiration rates of trees by 12% compared to untreated control trees. Root loss associated with digging reduced transpiration rates and had a greater effect on transpiration than any Bioplex™ treatment. Survival 12 months after transplanting was 100%. Bioplex™ treatments applied before digging had no effect on growth after transplanting. Transplanted trees had reduced caliper growth and shoot extension the season after transplant compared to non-dug controls. Although Bioplex™ reduced transpiration rates for three to five days after application in non-dug trees, there were no long-term benefits to survival or re-growth to summer transplanted trees.

scholarly journals Painted Containers: A New Method for Imidacloprid Application

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 655f-656
Author(s):  
Claudio C. Pasian ◽  
Daniel K. Struve ◽  
Richard Lindquist
Keyword(s):  
Survival Rate ◽  
Leaf Disk ◽  
New Method ◽  
Control Treatment ◽  
Euphorbia Pulcherrima ◽  
Bemisia Argentifolii ◽  
Latex Paint ◽  
Application Method ◽  
Brachycaudus Helichrysi ◽  
Methods Of Application

The effectiveness of two methods of application of the insecticide imidacloprid in controlling 1) aphids (Brachycaudus helichrysi) on Chrysanthemum plants, Dendranthema ×grandiflora (Ramat) (cv. Nob Hill) and 2) whitefly (Bemisia argentifolii) on poinsettia, Euphorbia pulcherrima (Wild.) (cv. Freedom Red) were compared. Plants were grown in containers with their interior covered by a mixture of flat latex paint and several concentrations of imidacloprid (0, 10, 21, 42, and 88 mg·L–1), or treated with a granular application of the insecticide (1% a.i.) according to label recommendations. All imidacloprid treatments were effective in reducing aphid survival after 8 weeks. The two most effective treatments were: granular (1% a.i.) and 88 mg·L–1 with an average of 0.2 aphid per plant as opposed to 50.4 aphids per plant for the control. The 42-mg·L–1 treatment had an aphid survival rate 1.6 aphids per plant. All imidacloprid treatments were effective in reducing white fly larvae. The 42 and 88 mg·L–1 and the granular (1% a.i.) were equally effective in reducing larvae numbers in lower poinsettia leaves: 0.5, 1.9, 0.9 larvae/2.5 cm leaf disk, respectively, while the control treatment had 62.9. None of the plants given treatments with paint showed any sign of phytotoxicity. These results suggest the possibility of a new application method for systemic chemicals with the potential of reducing or eliminating Worker Protection Standard (WPS) Restricted Entry Intervals (REI) and reducing the release of chemicals to the environment. Chemical name used: 1-[(6-Chloro-3-pyrimidil)]-N-nitro-2-imidazolidinimine.

Influence of Application Method on the Activity of Butylate and EPTC in Reduced-Tillage Corn (Zea mays)

Weed Science ◽  
1987 ◽  
Vol 35 (3) ◽  
pp. 412-417 ◽  
Author(s):  
Douglas D. Buhler
Keyword(s):  
Zea Mays ◽  
Weed Control ◽  
The Other ◽  
Growth Chamber ◽  
Reduced Tillage ◽  
Corn Yield ◽  
Liquid Fertilizer ◽  
Application Method ◽  
Control Growth ◽  
Application Methods

Weed control in reduced-tillage corn (Zea maysL. ‘Pioneer 3732′) with butylate [S-ethyl bis(2-methylpropyl) carbamothioate] and EPTC (S-ethyl dipropyl carbarnothioate) was not reduced when these herbicides were applied jointly with dry or liquid fertilizer. In most cases, application with fertilizer resulted in weed control similar to that observed when the herbicide was applied in water at 285 L/ha. Butylate applied as a granular formulation also gave weed control similar to the spray at 285 L/ha. Application in 95 L/ha of water consistently resulted in reduced weed control. Corn injury was not greatly influenced by application method, and differences in corn yield appeared to be due to differences in weed control. Growth chamber bioassays indicated that both butylate and EPTC dissipated more rapidly when applied in 95 L/ha of water than the other application methods, which may explain differences in weed control observed in the field.

Effects of Application Method and Rate on Control of Sclerotinia Blight of Peanut with Iprodione and Fluazinam1

2001 ◽  
Vol 28 (1) ◽  
pp. 28-33 ◽  
Author(s):  
J. P. Damicone ◽  
K. E. Jackson
Keyword(s):  
Disease Control ◽  
Disease Incidence ◽  
Maximum Yield ◽  
Wide Band ◽  
Yield Response ◽  
Application Method ◽  
Sclerotinia Blight ◽  
Progress Curve ◽  
Application Methods ◽  
Yield Responses

Abstract Two trials with iprodione and three trials with fluazinam were conducted to assess the effects of application method and rate on the control of Sclerotinia blight of peanut with fungicide. In order to concentrate the fungicides near the crown area where the disease causes the most damage, applications were made through a canopy opener with a single nozzle centered over the row to achieve a 30.5-cm-wide band (canopy opener), and through a single nozzle centered over the row to achieve a 46-cm-wide band (band). Broadcast applications were compared to these methods at rates of 0, 0.28, 0.56, and 1.12 kg/ha on the susceptible cultivar Okrun. Sclerotinia blight was severe, with > 70% disease incidence and < 2000 kg/ha yield for the untreated controls in each trial. Linear reductions in area under the disease progress curve (AUDPC), but not final disease incidence, with iprodione rate were significant (P < 0.05) for all methods of application. However, the rate of decrease did not differ among application methods. Linear increases in yield with rate of iprodione were greater for canopy opener compared to the band or broadcast applications. Only a 50% reduction in AUDPC and a maximum yield of < 2700 kg/ha was achieved with iprodione using the best method. At the maximum rate of 1.12 kg/ha, fluazinam provided > 75% disease control and > 4000 kg/ha yield for all application methods. Differences in disease control and yield among application methods only occurred at the 0.28 and 0.56 kg/ha rates of fluazinam. Reductions in AUDPC with fluazinam rate were quadratic for all application methods, but AUDPC values were less for the canopy opener and band methods at 0.28 and 0.56 kg/ha compared to the broadcast methods. The yield response to rate for broadcast applications of fluazinam was linear. However, predicted yield responses to fluazinam rate were quadratic for the band and canopy opener methods and approached the maximum response at 0.84 kg/ha. Targeting fungicide applications using the band and/or canopy opener methods was beneficial for fluazinam at reduced rates. Disease control with iprodione was not adequate regardless of application method.

Effect of Bensulfuron-Methyl on Cotton (Gossypium hirsutumL.) Growth and Development

1996 ◽  
Vol 10 (4) ◽  
pp. 851-855
Author(s):  
C. Dale Monks ◽  
Michael G. Patterson ◽  
Malcolm Pegues
Keyword(s):  
Methyl Ester ◽  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Development ◽  
Field Experiments ◽  
Mepiquat Chloride ◽  
Boll Rot ◽  
Effect On Yield

Field experiments were conducted in Alabama from 1992 through 1994 to evaluate the potential of the methyl ester of bensulfuron applied at sublethal rates as a plant growth regulator for reducing plant height and boll rot in cotton. Bensulfuron at 0.017 and 0.034 g ai/ha or mepiquat chloride at 10 g ai/ha was applied POST alone at the pinhead square or early-bloom stage of cotton growth or sequentially at 0.017 followed by (fb) 0.017 g/ha, 0.034 fb 0.034 g/ha of bensulfuron and 5 fb 5, 10 fb 10, 10 fb 20, or 20 fb 20 g/ha of mepiquat chloride. Mepiquat chloride had no effect on yield in 1992 and 1994 but decreased yield when applied sequentially in 1993. Bensulfuron was generally detrimental to first position fruit retention, and it delayed maturity. Treatments that reduced plant height did not reduce boll rot. Bensulfuron treatments that reduced plant height also reduced yield; therefore, the potential for its use as a growth regulator in cotton appears limited.

scholarly journals PGR and Its Application Method Affect Number and Length of Runners Produced in ‘Maehyang’ and ‘Sulhyang’ Strawberries

Agronomy ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 59 ◽  
Author(s):  
Chen Liu ◽  
Ziwei Guo ◽  
Yoo Park ◽  
Hao Wei ◽  
Byoung Jeong
Keyword(s):  
Growth And Development ◽  
Foliar Spray ◽  
Fragaria Ananassa ◽  
Health States ◽  
Chlormequat Chloride ◽  
Poor Growth ◽  
Effective Combination ◽  
Mother Plants ◽  
Application Methods ◽  
To Receive

Vegetative propagation using runner plants is an important method to expand the cultivation area for the strawberry (Fragaria × ananassa Duch.). However, excessively long runners need an increased total amount of nutrients and energy to receive elongation from mother plants, which may lead to poor growth or reduced output. The use of plant growth regulators (PGRs) is an adoptable way to solve such problems. The objectives of this experiment were to study the effects of PGRs and their application methods on the growth and development of runners, runner plants, and mother plants, and also to find effective ways to control the number and length of runners without harmful side effects. Chlormequat chloride (CCC), 6-benzylaminopurine (BA), and ethephon (ETH) at a concentration of 100 mg·L−1 were applied via three different methods: injection into crowns, medium drench, and foliar spray. The results showed that BA injection into crowns was the most effective combination among all treatments, which prominently shortened the length of runners and increased the number of runners and leaves on a single plant. Furthermore, plants with BA solution injection tended to produce stronger runners with higher fresh and dry weights, without affecting the health states of mother plants. The ETH solution seemed to have toxic effects on plants, by leading many dead leaves and weak runners, and increased activities of antioxidant enzymes. Other than the injection method, the other two application methods of the CCC solution did not significantly affect the growth and development of both cultivars. Runner plants grown for 30 days were not affected by any treatments, and they were in similar conditions. Overall, BA injection into crowns is recommended for controlling the number and length of strawberry runners.

Sign in / Sign up

Export Citation Format

Share Document