Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1976-04-05
1977-07-12
Spear, Jr., Frank A.
Chemistry: fertilizers
Processes and products
Organic material-containing
71 28, 71 64C, 71 1, 47DIG13, C05C 900, C05C 100
Patent
active
040351734
ABSTRACT:
This invention relates to a method for simultaneously fertilizing and thinning commercial timber forests of which, as a general rule, the predominant population are conifers of the family Pinaceae. The trees are characterized in two groups, preferred and unpreferred, the preferred trees comprising one or more species of the conifer family Pinaceae while the unpreferred trees comprise either competing broadleaf varieties or species of the family Pinaceae which are less desirable in a given instance. Broadleaf brush and weeds can also be selectively eliminated by this procedure.
Selective thinning and fertilization is accomplished by applying to the foliage of all of the trees, brush and weeds an aqueous nitrogenous fertilizer solution containing an amount of a nitrogen source corresponding to at least about 12.5 weight percent elemental nitrogen at a dosage level sufficient to kill a substantial proportion of the unpreferred trees and/or brush by promoting extreme foliage burning and desiccation, yet insufficient to kill a substantial number of the preferred species which, by definition, are stronger and more tolerant to these solutions.
REFERENCES:
patent: 2869996 (1959-01-01), Vierling
patent: 2978309 (1961-04-01), Buc
patent: 3046105 (1962-07-01), Young
patent: 3539325 (1970-11-01), Young et al.
patent: 3558300 (1971-01-01), Wagner
patent: 3640698 (1972-02-01), Backlund
patent: 3663197 (1972-05-01), Backlund
Feeding Plants with Foliage Sprays, Beattie Horticulture, vol. XXXI, May, 1953, pp. 1209-1217.
Hashimoto Saburo
Young Donald C
Hartman Richard C.
Laird Michael H.
Lander Ferris H.
Sandford Dean
Spear, Jr. Frank A.
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