Details
| Original language | English |
|---|---|
| Pages (from-to) | 166-174 |
| Number of pages | 9 |
| Journal | Pesticide Science |
| Volume | 55 |
| Issue number | 2 |
| Early online date | 26 Mar 1999 |
| Publication status | Published - 1999 |
| Externally published | Yes |
Abstract
Effects of droplet size and carrier volume on foliar uptake and translocation of gibberellic acid (GA3) and 2,4-D were investigated. Simulated spray droplets were applied to primary leaves of 10-day-old Phaseolus vulgaris (cv Nerina) in droplet sizes and carrier volumes ranging from 0.5 to 10 μl and 10 to 200 μl per leaf, respectively. Doses of GA3 (2 μg per leaf) and 2,4-D (100 μg per leaf) were held constant. Total uptake of GA3 approached a penetration equilibrium within 24h after application, but uptake of 2,4-D continued to increase. Decreasing droplet size and/or increasing carrier volume increased GA3 and 2,4-D uptake. Translocation to stem and roots was positively related to total uptake. A positive linear relationship between the logarithm of the total droplet/leaf surface interface area and 2,4-D uptake or translocation was found, but for GA3 this relationship was quadratic. Potential mechanisms of the effects of spray application factors on foliar uptake are discussed.
Keywords
- 2,4-dichlorophenoxyacetic acid, Carrier volume, Droplet size, Gibberellic acid, Penetration, Spray volume, Translocation
ASJC Scopus subject areas
- Immunology and Microbiology(all)
- Applied Microbiology and Biotechnology
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Pesticide Science, Vol. 55, No. 2, 1999, p. 166-174.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Spray application factors and plant growth regulator performance
T2 - II. Foliar uptake of gibberellic acid and 2,4-D
AU - Knoche, M.
AU - Bukovac, M. J.
PY - 1999
Y1 - 1999
N2 - Effects of droplet size and carrier volume on foliar uptake and translocation of gibberellic acid (GA3) and 2,4-D were investigated. Simulated spray droplets were applied to primary leaves of 10-day-old Phaseolus vulgaris (cv Nerina) in droplet sizes and carrier volumes ranging from 0.5 to 10 μl and 10 to 200 μl per leaf, respectively. Doses of GA3 (2 μg per leaf) and 2,4-D (100 μg per leaf) were held constant. Total uptake of GA3 approached a penetration equilibrium within 24h after application, but uptake of 2,4-D continued to increase. Decreasing droplet size and/or increasing carrier volume increased GA3 and 2,4-D uptake. Translocation to stem and roots was positively related to total uptake. A positive linear relationship between the logarithm of the total droplet/leaf surface interface area and 2,4-D uptake or translocation was found, but for GA3 this relationship was quadratic. Potential mechanisms of the effects of spray application factors on foliar uptake are discussed.
AB - Effects of droplet size and carrier volume on foliar uptake and translocation of gibberellic acid (GA3) and 2,4-D were investigated. Simulated spray droplets were applied to primary leaves of 10-day-old Phaseolus vulgaris (cv Nerina) in droplet sizes and carrier volumes ranging from 0.5 to 10 μl and 10 to 200 μl per leaf, respectively. Doses of GA3 (2 μg per leaf) and 2,4-D (100 μg per leaf) were held constant. Total uptake of GA3 approached a penetration equilibrium within 24h after application, but uptake of 2,4-D continued to increase. Decreasing droplet size and/or increasing carrier volume increased GA3 and 2,4-D uptake. Translocation to stem and roots was positively related to total uptake. A positive linear relationship between the logarithm of the total droplet/leaf surface interface area and 2,4-D uptake or translocation was found, but for GA3 this relationship was quadratic. Potential mechanisms of the effects of spray application factors on foliar uptake are discussed.
KW - 2,4-dichlorophenoxyacetic acid
KW - Carrier volume
KW - Droplet size
KW - Gibberellic acid
KW - Penetration
KW - Spray volume
KW - Translocation
UR - http://www.scopus.com/inward/record.url?scp=0033014847&partnerID=8YFLogxK
U2 - 10.1002/(SICI)1096-9063(199902)55:2<166::AID-PS886>3.0.CO;2-2
DO - 10.1002/(SICI)1096-9063(199902)55:2<166::AID-PS886>3.0.CO;2-2
M3 - Article
AN - SCOPUS:0033014847
VL - 55
SP - 166
EP - 174
JO - Pesticide Science
JF - Pesticide Science
SN - 0031-613X
IS - 2
ER -