Method for fertilizing cultivated plants for optimizing the...

A - Human Necessities – 01 – C

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A01C 21/00 (2006.01)

Patent

CA 2394708

The invention relates to a method for the fertilization of cultivated plants by optimizing the quantity and quality of the yield with the help of a bio- indicator, in which method, before the establishing of the plant stand, the following steps are taken: the cultivated area is divided into sub-areas; in each sub-area the potential yield is determined on the basis of a bio- indicator; the optimal bio-indicator level aimed at for the potential crop is selected; the nitrogen fertilization required for achieving the desired optimal level of the bio-indicator in the potential crop is determined; and thereafter, in connection with the planting, a nitrogen fertilizer is spread, and nitrogen fertilizer is optionally spread once or several times, after the planting, according to the said fertilization requirement, the realization of the potential yield being monitored during the growing season in each sub-area by means of plant stand measurement, and on the basis of these measurements additional nitrogen fertilizer is spread once or several times, according to need, in order to attain the desired bio-indicator level.

La présente invention concerne une méthode de fertilisation de plantes agricoles destinée à optimiser la quantité et la qualité du rendement grâce à un indicateur biologique, méthode qui consiste, avant l'établissement de la densité de peuplement, à: diviser la surface agricole en deux zones secondaires; déterminer le rendement dans chaque surface secondaire sur la base d'un indicateur biologique; sélectionner le niveau optimal recherché de l'indicateur biologique pour la culture potentielle; déterminer le volume de fertilisation azotée nécessaire pour atteindre le niveau optimal souhaité de l'indicateur biologique dans la culture potentielle; puis, en vue de la plantation, répandre de l'engrais azoté, celui-ci pouvant être éventuellement répandu une ou plusieurs fois après la plantation, selon les exigences de fertilisation. Le rendement potentiel est surveillé pendant la saison de croissance dans chaque surface secondaire avec des mesures de la densité de population, et sur la base de ces mesures, davantage d'engrais azoté est répandu une ou plusieurs fois, selon le besoin, afin d'atteindre le niveau de l'indicateur biologique recherché.

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