The National Weather Service has three types of alerts that can be issued whenever temperatures get near or below freezing: frost, freeze and hard freeze. Here’s a closer look at the differences between these cold-weather categories. Frost Ice-covered apple on a tree in a park. (Mikhail Ja...
The hole diameter was about 0.5 cm, and the hole was deep into the middle of the trunk. We installed the dyeing infusion device, and the gap between the orifice and the infusion needle was sealed with tree callus to prevent the entry of bacteria. After one year of the experiment, the...