Estimation of film antitranspirant spray coverage on rapeseed (Brassica napus L.) leaves using titanium dioxide

Wax Extracted from Waste Cauliflower Leaves Shows Potential Antitranspirant Efficacy When Applied to Rapeseed Plants

“…Different operators sprayed Experiments 1 and 2, and the abaxial response in Experiment 2, but not in Experiment 1, may result from a difference in hand-spraying technique between operators. In future experiments, the spraying conditions may need further investigation since leaf coverage with antitranspirants is important for blocking stomata to reduce transpiration, and coverage varies with spray parameters, e.g., dose rate [19].…”

Targeted delivery of oxytetracycline to the epidermal cell junction and stomata for crop protection

“…68 The analysis was done through setting a colour threshold of the recorded images. 69 Leaf specimens ( n = 15) were collected from the saplings after the pesticides had dried up completely. The specimens were then placed on a black velvet mat and illuminated with a handheld UV light source (395 nm, Everbrite, LLC).…”

“…[102][103][104][105][106][107][108][109][110] Traditionally, pesticide leaf coverage and spray patterns are studied through water-sensitive paper strips 111,112 or fluorescence imaging using tracer dyes. 68,69,113 Given the inherent fluorescence of OTC, its leaf surface coverage was assessed through fluorescence imaging. Fig.…”

Evaluation of the Concentration-Response Relationship between Film Antitranspirant and Yield of Rapeseed (Brassica Napus L.) Under Drought

“…There is no doubt that the area covered by AT, i.e., leaf coverage, has direct impacts on the performance of AT. That is, the increase of leaf coverage induced by an increasing concentration of AT may result in further inhibition of gas exchange (Xiang et al, 2021). Faralli et al ( 2017) compared three dose rates of AT, 1, 2 and 4 L/ha (i.e., 1%, 2% and 4%) on winter rapeseed in the field conditions.…”

“…One possible hypothesis to explain the lack of effect of AT application, is that the concentration of AT may not be high enough to detect the yield benefits significantly on rapeseed due to the limitation of leaf coverage, which is highly related to the concentration of AT. The leaf coverage from AT application at 1% was estimated to be up to 19%, depending on the growth of plants (Xiang et al, 2021).…”