Plant husbandry – Tree trunk guard or protector
Patent
1975-03-31
1976-06-15
Burr, Edgar S.
Plant husbandry
Tree trunk guard or protector
47 3413, 47 37, 47 58, A01G 2300
Patent
active
039628221
ABSTRACT:
This invention relates to planting containers which facilitate the mechanized planting of seedlings in large numbers. The containers comprise a square cross-sectioned tubular portion and an earth penetrating nose portion. For immediate root egress the containers have apertures which are offset to one side in order that they are blocked by the wall of another similar container when placed contiguous therewith. The containers are adapted to be grouped into bundles which facilitate the nursery, transporting and planting operations. The containers may be formed of a biodegradable material or may comprise separating sections to allow unimpeded root development.
REFERENCES:
patent: 532687 (1895-01-01), Mulhaupt
patent: 837977 (1906-12-01), Thornton
patent: 1774019 (1930-08-01), Lam
patent: 1936988 (1933-11-01), Otwell
patent: 2435539 (1948-02-01), Gould
patent: 3103278 (1963-09-01), Kuzma et al.
patent: 3755962 (1973-09-01), Walters et al.
patent: 3800974 (1974-04-01), Mogel et al.
patent: 3844987 (1974-10-01), Clendinning et al.
Bitner Ronald G.
Burr Edgar S.
Canadian Patents and Development Limited
Feyrer James R.
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