Herbicide Spray Truck - Weed Control: Eliminate undesirable plants with herbicides and pesticidesseeds of various weed species have totally different temperature necessities for germination. Common kicherb could germinate underneath snow cover, while frequent purslane may not germinate until the bottom temperature reaches to F. corn seeds shall be usually at or close to the optimal bottom temperature for fast germination - a temperature that might be additionally ideal for some weed seeds.desk might show a typical distribution of droplet sizes for a flat valve nozzle when spraying water at two totally different pressures. Table might present that greater than half of all droplets at or psi perhaps less than μm diameter. in droplets with a diameter of lower than micrometers, nonetheless, little of the whole quantity is contained.are taken into the plant in the rule by the roots; but additionally some members of that family may be absorbed by the leaf. in the case of use as a leaf remedy, a surfactant or an oil is contained in the rule for increasing the absorption. triazines provide non-selective management over various grasses and broadleaved weeds when used to preisen beneficial for non-cropland.