نتایج جستجو برای: calcium spraying
تعداد نتایج: 174520 فیلتر نتایج به سال:
Indoor residual spraying—spraying insecticide inside houses to kill mosquitoes—is an important method for controlling malaria vectors in sub-Saharan Africa. We propose a mathematical model for both regular and non-fixed spraying, using impulsive differential equations. First, we determine the stability properties of the nonimpulsive system. Next, we derive minimal effective spraying intervals a...
Silicon is one of the beneficial elements for plants, recent studies have shown that this element plays a very important role in plant resistance to environmental stresses, including heavy metal stress. To evaluate the effect of silicon foliar spraying on increasing tolerance to lead contamination in dill (Anethum graveolens L) a factorial experiment based on completely randomized design with f...
چکیده ندارد.
Abstract In 2020, a greenhouse experiment was conducted to investigate the suppression of annual bluegrass ( Poa annua ), which is difficult weed manage in cool-season turfgrass mixtures on football pitches. The efficacy prohexadione calcium (Pc), ethephon (Eth) and Pseudomonas fluorescens against P. , Lolium perenne pratensis tested, as latter two most commonly occur Mesotrione (Mes) used posi...
The experimental study is done for technological parameters of high-melting metal arc spraying to study the influence of spraying current, spraying voltage and wire feed voltage on spraying arc and the influence of spraying current on coating temperature and analyze theoretically the distribution rules of spray gun jet speed field and temperature field and their influencing factors. The results...
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