Water bathing and pressure canning are two common ways to preserve foods by canning. These techniques use heat processing to preserve foods, and which technique you use depends on the acidity of the food.
Broadacre spraying of pastures is intended to reduce undesirable plants and increase grasses for livestock. This practice often results in unintended consequences, including damage and reduction of native forbs and reduced profitability. One approach to managing perceived “weedy” plants is incorporating different species of livestock into a grazing operation.