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Leaf surface characteristics affect the deposition and distribution of droplets in rice (Oryza sativa L.)
- Source :
- Scientific Reports, Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
- Publication Year :
- 2021
-
Abstract
- We studied the effects of leaf surface characteristics on canopy droplet behaviour using two rice cultivars with similar leaf shapes but significantly different leaf surface characteristics: Jia58 (glabrous rice; smooth leaf surface and no burrs) and Yongyou12 (hairy-leaved rice; rough leaf surface covered with burrs). The plants were subjected to spray tests with different spray pressures and nozzle apertures. The results show that the deposition amount per unit leaf area was significantly higher in the Yongyou12 canopy than in the Jia58 canopy. The diameter, volume median diameter, number median diameter, and coverage of droplets were significantly higher in Yongyou12 than in Jia58, while the coverage density of droplets was significantly lower. The proportion of small droplets of Jia58 is higher than that of Yongyou12. Thus, a larger amount of large-sized droplets could retain on the leaf surface of hairy-leaved rice, and a larger number of small-sized droplets were retained on the leaf surface of glabrous rice. Smaller pressure and larger flow nozzle were conducive to the retention of the Jia58, while Yongyou12 required larger pressure and larger flow nozzles. Ultrastructural analyses revealed that the leaf surface of glabrous rice had no trichomes and more wax than hairy-leaved rice, and the critical surface tension was lower, resulting in the retention of mainly small droplets on its leaf surface and a lower deposition amount. Therefore, in order to increase the deposition of pesticide droplets on the leaf surface in production, glabrous rice should choose nozzles with smaller spray pressure and large flow rate.
- Subjects :
- Canopy
Materials science
Physiology
Science
Nozzle
Article
Surface Tension
Pesticides
Wax
Multidisciplinary
Oryza sativa
fungi
food and beverages
Oryza
Trichome
Volumetric flow rate
Plant Leaves
Horticulture
Deposition (aerosol physics)
Volume (thermodynamics)
visual_art
visual_art.visual_art_medium
Wettability
Medicine
Plant sciences
Subjects
Details
- ISSN :
- 20452322
- Volume :
- 11
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific reports
- Accession number :
- edsair.doi.dedup.....89f3871f655885ecc4273ca29dfa8fc7