The Plant Medic columnist Ricky Kemery says scrawny tomato plants might indicate soil has been depleted of nutrients.

Worm castings owe their pest control capacity to chitinase, an enzyme that breaks down chitin, an integral constituent of insect exoskeletons, fungus cell walls, and nematode eggshells.

Shasta College is expanding its composting program to include vermiculture, a process that uses worms to create castings from ...

Worm castings owe their pest control capacity to chitinase, an enzyme that breaks down chitin, an integral constituent of insect exoskeletons, fungus cell walls, and nematode eggshells. Chitin is a ...