Panelboard

Distribution board, breaker panel, electrical panel, fuse box, load center

Pyrethrum

Chrysanthemum cinerariifolium, Chrysanthemum coccineum, Tanacetum cinerariifolium, Tanacetum coccineum, Dalmatian chrysanthemum

Propagule

Any structure capable of giving rise to a new plant by asexual or sexual reproduction, including bulbils, leaf buds, etc.

Propagate

Sexual propagation produces seed by breeding male and female cannabis plant or asexual propagation to produce a plant by cloning.

Primordia

Belonging to or characteristic of the earliest stage of development of an organism or a part.

Phytotron

Growth chamber, plant growth facility, controlled environment chamber, plant research lab, environmental simulator

pH Tester

pH meter, acidity tester, pH monitor, pH gauge, pH probe

Perennial

Everlasting, enduring, perpetual, recurrent, timeless

Parameter

Criterion, guideline, specification, standard, benchmark