Urea formaldehyde

Urea formaldehyde

A slow-release nitrogen fertiliser composed of a polymer of urea and formaldehyde. Availability is based on low solubility and biological breakdown. Also called ureaform.

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Industry/Domain: Plants
Category: Horticulture
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urea formaldehyde

Plants; Horticulture

A slow-release nitrogen fertilizer composed of a polymer of urea and formaldehyde. Availability is based on low solubility and biological breakdown. Also called ureaform.

urea-formaldehyde resins

Science; General science

The condensation products obtained by the reaction of urea or melamine with formaldehyde. Resinous condensation products of formaldehyde with other nitrogen-containing compounds, ...

urea-formaldehyde foam insulation

Agricultural chemicals; Pesticides

A material once used to conserve energy by sealing crawl spaces, attics, etc.; no longer used because emissions were found to be a health hazard.

formaldehyde

Chemistry; Analytical chemistry

A colorless gas that has a sharp smell. When mixed with water, it forms a solution that is used to preserve specimens.

formaldehyde

Engineering; Electronic engineering

Formula, HCHO. A colorless, pungent gas that is a constituent of many well-known plastic insulating materials.

formaldehyde

Chemistry; Weather; Atmospheric chemistry

CH 2 O, A colorless, pungent, carcinogenic, and toxic gas which can irritate membranes. It is used as formalin in its aqueous state (37 %). Formaldehyde is reactive due to its ...

bark

Plants; Horticulture

The rough outer part of the cortex; loosely used for the entire cortex.

articulate

Plants; Horticulture

Having nodes or joints where separation may naturally occur.

annular

Plants; Horticulture

Ring-like; said of leaf scars that encircle the bud, or bundle scars that are circular with an opening in the center.

Plants; Horticulture

On the front side, away from the axis, toward the subtending bract.

aphid

Plants; Horticulture

a small green or white insect that sucks juices from plant parts

apomixis

Plants; Horticulture

process of producing viable seed without fertilization

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