Method for controlling root growth using diquat bromide

Details Method for controlling root growth using diquat bromide Method for controlling root growth using diquat bromide

A - Human Necessities

01

N

A01N 43/90 (2006.01) A01N 25/02 (2006.01) A01N 25/16 (2006.01) A01N 37/34 (2006.01) A01N 47/14 (2006.01) A01P 21/00 (2006.01)

Patent

CA 2328103

The present invention relates to the use of diquat bromide as a root control agent. It is based, at least in part, on the results of green house testing in which application of diquat bromide as a dense foam to tree roots resulted in the destruction of the test roots without causing damage to the upper portion of the trees. Without being bound to any particular theory, it is believed that by applying diquat bromide to produce a high local concentration on the target root, the inactivating effects of local organic substances are overcome, and the diquat bromide kills root tissue by its dessicating activity. The inactivation of diquat bromide by organic materials, under these circumstances, becomes an advantage, as it prevents toxic levels of diquat bromide from traveling downstream from the point of application.

La présente invention concerne l'utilisation de bromure de diquat comme agent de régulation des racines. L'invention se fonde en partie sur les résultats d'essais en serre au cours desquels l'application sur des racines d'arbres de bromure de diquat sous forme de mousse dense a provoqué la destruction des racines soumises à l'essai sans endommager la partie supérieure des arbres. Indépendamment de toute théorie particulière, il apparaît qu'en appliquant du bromure de diquat de façon à obtenir une concentration locale élevée sur la racine cible, on parvient à neutraliser les effets d'inactivation des substances organiques locales et à permettre au bromure de diquat de tuer les tissus des racines par son action déshydratante. Dans ces conditions, l'inactivation du diquat de bromure par des matières organiques constitue un avantage, étant donné qu'elle permet d'empêcher que des niveaux toxiques de bromure de diquat se déplacent en aval de leur point d'application.

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