Defoliant - Wikipedia
网页A defoliant is any herbicidal chemical sprayed or dusted on plants to cause their leaves to fall off. Defoliants are widely used for the selective removal of weeds in managing croplands and lawns.
Defoliant | Herbicides, Pesticides, Agriculture | Britannica
网页Defoliant, a chemical dust or spray applied to plants to cause their leaves to drop off prematurely. Defoliants sometimes are applied to crop plants such as cotton in order to facilitate harvesting. They are also used in warfare to eliminate enemy food crops and potential areas of concealment by.
Defoliant Definition & Meaning - Merriam-Webster
网页2024年2月2日 · The meaning of DEFOLIANT is a chemical spray or dust applied to plants in order to cause the leaves to drop off prematurely.
PI-101/PI138: Defoliants and Desiccants - EDIS
网页2021年8月19日 · Defoliation is the abscission, or shedding, of leaves that occurs naturally after annual plants reach physiological maturity, but may also be induced by frost, disease, insect damage, drought, or mineral deficiency. Defoliation can …
20.3: Herbicides and Defoliants - Chemistry LibreTexts
网页2022年8月10日 · A defoliant is any herbicidal chemical sprayed or dusted on plants to cause their leaves to fall off. Defoliants are widely used for the selective removal of weeds in managing croplands and lawns.
What Are Defoliants Used For? - WorldAtlas
网页2017年4月25日 · Defoliants are sprayed on or applied to the portion of the weeds above the ground, which are absorbed by plant tissue. The defoliants are called post-emergence herbicides and can be applied at numerous sites on the plant or at specific points.
Defoliant - an overview | ScienceDirect Topics
网页DEF is an organophosphate chemical used as a cotton defoliant to facilitate mechanical harvesting. Recommended application rate is ∼1–2.5 pints per acre per year applied as a diluted spray.
Defoliant - an overview | ScienceDirect Topics
网页Harvest aid chemicals such as defoliants, desiccants and plant growth regulators help the crop for timely harvest by promoting defoliation and desiccation at the time of plant maturity (Du et al., 2013: Dodds et al., 2018). Defoliation is generally practiced when around 60 percent of the bolls are opened.
Defoliant - Encyclopedia.com
网页2016年8月24日 · defoliant, any one of several chemical compounds that, when applied to plants, can alter their metabolism, causing the leaves to drop off. In agriculture defoliants are used to eliminate the leaves of a crop plant so they will …
Defoliant - an overview | ScienceDirect Topics
网页Any substance(s) intended for use as a plant regulator, defoliant, or desiccant can also be included in this definition (Ragsdale, 1999). The definition of a “pest” can vary depending on the context in which it is employed, but generally, a pest represents an organism that causes harm to humans, their livestock, crops, or possessions ( Hill ...