Uptake of Picloram by Eucalypt Leaf Discs

Sands, R.; Bachelard, E. P.

doi:10.1111/j.1469-8137.1973.tb02012.x

Cited by 25 publications

(14 citation statements)

References 134 publications

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“…Also surface tension, decreased by increasing the concentration of surfactant. Many researchers have observed the lack of correlation between surface tension and wetting characteristics of formulations and their performance (Parr and Norman, 1965, Hull et al, 1982and Sand and Bachelard, 1973 ingredient and SDS should be used since it improved spreading wet ability and retention of sprayed solution. Bioactivity increases while surface tension of sprayed solution decreased (Osipow, 1964).…”

Section: ) Physico-chemical Properties Of Spray Solution For the Locmentioning

confidence: 99%

Insecticidal activity of citric acid and their soluble powder formulations against Aphis craccivora under laboratory conditions.

Ashraf¹,

El-Kady²,

Mohamed³

et al. 2010

Egyptian Academic Journal of Biological Sciences, F. Toxicology

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Anionic surfactant sodium dodecyl sulphat (SDS) was used as wetting agent to prepare citric acid as soluble powder formulation. The prepared formulation showed stability and passed successfully all physico-chemical properties for soluble powder formulations. The insecticidal activity of active ingredient and its formulations were compared with citric acid (SP 90%) that prepared by El-kady (2008) through using non-ionic surfactant against different stages of Aphis craccivora under laboratory conditions. The results showed that, the active ingredient showed a slight activity against Aphis craccivora after two hours from treatment and increased gradually to give the high effectiveness after 12 hours. On the other hand all formulations were more effective against nymphs than adults and winged. With the other point of view the prepared Sp formulations were more effective than their active ingredient. The increasing in this effectiveness of test formulations depended on type of wetting agents, exposure periods and treated stage. B) Physico-chemical characteristics of the basic formulation: a-Surfactants: 1-Hydrophilic-lipophilic balance (HLB):-The solubility of surfactant in water is

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Section: ) Physico-chemical Properties Of Spray Solution For the Locmentioning

confidence: 99%

Insecticidal activity of citric acid and their soluble powder formulations against Aphis craccivora under laboratory conditions.

Ashraf¹,

El-Kady²,

Mohamed³

et al. 2010

Egyptian Academic Journal of Biological Sciences, F. Toxicology

View full text Add to dashboard Cite

show abstract

“…The leaves of glasshouse-grown seedlings were soft, thin and dark green in colour, and appeared to have little cuticular wax. It was felt that, in such seedlings, uptake directly through the cuticle may have been more important than in the leaf discs Sands and Bachelard (1973b) took from the tougher, thicker leaves of trees grown outdoors.…”

Section: Light Intensitymentioning

confidence: 98%

“…This herbicide which is effective in killing eucalypts (Bachelard et al 1965) was used by Sands (1972) throughout his work.…”

Section: Herbicide Solutionsmentioning

confidence: 98%

“…Eucalyptus viminalis seedlings were used because of the positive relationship shown by Sands and Bachelard ( 1973b) between herbicide uptake and stomatal aperture with leaf discs of this species.…”

Section: Plant Materialsmentioning

confidence: 99%

“…The role of stomata in foliar uptake is controversial. Sands and Bachelard (1973b) discussed some misconceptions in previous literature on stomatal uptake and, from their results using leaf discs of Eucalyptus viminalis Labill. and E. polyanthemos Schau., concluded stomatal aperture was important in influencing herbicide uptake by leaves.…”

Section: Introductionmentioning

confidence: 98%

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Relationship Between Stomatal Aperture and Herbicide Effectiveness inEucalyptus viminalisSeedlings

Bachelard

Burns

1975

Australian Forestry

Self Cite

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Relationship Between Stomatal Aperture and Herbicide Effectiveness Seedlings. m Eucalyptus viminalis SUMMARY Stomatal apertures of leaves of Eucalyptus viminalis Labill. seedlings were modified by variations in light intensity, application of the metabolic inhibitor phenyl mercuric acetate, and by drought. Differences in herbicide effectiveness of picloram solutions applied to leaves of differing stomatal aperture were consistent with the hypothesis that stomatal aperture can regulate the amount of herbicide entering the leaf.However, the results indicated that the conditions which are optimum for one requirement for herbicide action (e.g. uptake) may not be optimum for other requirements (e.g. translocation).

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Enantioselective Uptake and Translocation of a Novel Chiral Neonicotinoid Insecticide Cycloxaprid in Youdonger (Brassica campestris subsp. Chinensis)

Zhang

Wang

et al. 2013

Chirality

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For a novel potential commercial chiral pesticide, an independent study on the fate characteristics and residues of each stereoisomer is essential if the application rates for the pesticide and human exposure are to be reduced. The absorption and translocation behavior of a chiral insecticide, cycloxaprid, in plants treated by root immersion and blade smearing was studied using (14)C-labeling tracer techniques. With the root treatment, total absorption of (1R;8S)-cycloxaprid (RS) (12.39%) was much greater than that of (1S;8R)-cycloxaprid (SR) (3.31%) at 192 h after treatment (HAT). The mass concentrations (RS/SR) of cycloxaprid in the roots, cotyledons, leaf 1, leaf 2, and leaf 3 were 37.0/16.8, 8.3/2.8, 11.7/6.5, 5.1/4.8, and 8.0/4.7 mg kg(-1) (fresh weight), respectively, at 192 HAT at an initial concentration 1.6 mg kg(-1). With the foliar application treatment, no significant difference was observed between the total absorption of RS (3.11%) and SR (4.03%) at the end of the treatment. Both acropetal and basipetal transport of absorbed (14)C occurred and more than 71.83% of absorbed RS and 82.42% of SR remained in the treated leaf. Stereoselective absorption was observed during root uptake but not during foliar absorption.

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Uptake of Picloram by Eucalypt Leaf Discs

Cited by 25 publications

References 134 publications

Insecticidal activity of citric acid and their soluble powder formulations against Aphis craccivora under laboratory conditions.

Insecticidal activity of citric acid and their soluble powder formulations against Aphis craccivora under laboratory conditions.

Relationship Between Stomatal Aperture and Herbicide Effectiveness inEucalyptus viminalisSeedlings

Enantioselective Uptake and Translocation of a Novel Chiral Neonicotinoid Insecticide Cycloxaprid in Youdonger (Brassica campestris subsp. Chinensis)

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