Northern Nut Growers Association Thirty-Fourth Annual Report 1943

Northern Nut Growers Association -- Periodicals; Nut trees -- Periodicals; Nuts -- Periodicals

2. This toxicity is due to the action of juglone, the oxidized form of
hydrojuglone, a non-toxic substance occurring in the inner bark and
green husk of walnuts.

3. Juglone has been used in dermatology to cure various skin disorders
including both bacterial and fungus diseases.

4. As a seed protectant, juglone is unsuitable because of its inherent
toxicity to the non-cutinzed root surfaces.

5. Laboratory and field tests have shown juglone to be an excellent
fungicide


LITERATURE CITED

     1. Bernthsen, A. and A. Semper Ueber die Constitution des Juglons
     und seine Synthese aus Naphtalin. Ber. d. deutsch. Chem. Gesellsch.
     20: 934-941. 1887.

     2. Brissemoret et Michaud Sur une nouvelle classe de medicaments de
     la peau; les quinones peroxydes. Jour. pharm. et chim. 7e ser.
     16:283-285. 1917.

     3. Brown, Babette I. Injurious influence of bark of black walnut on
     seedlings of tomato and alfalfa. Northern Nut Growers' Assn., Proc.
     1942:97-102. 1943,

     4. Combes, R. Sur un procede de preparation et de purification des
     derives oxyanthraquinoniques et oxynapthoquinoniques en general, du
     juglon et de l'emodine en particulier. Bull. soc. chim. 4c ser. 1:
     800-816. 1907.

     5. Cook, Mel T. Wilting caused by walnut trees. Phytopathology
     11:346. 1921.

     6. Davis, Everett. The toxic principle of _Juglans nigra_ as
     identified with synthetic juglone, and its toxic effects on tomato
     and alfalfa plants. Amer. Jour. Bot. 15: 620. 1928.

     7. Greene, K.W. The toxic (?) effect of the black walnut: Northern
     Nut Growers' Assn., Proc. 1929: 152-156. 1930.

     8. Jones, L. R. and W. J. Morse The shrubby cinquefoil as a weed.
     16th Ann. Rpt, Vt, Agr. Expt. Sta. 188-190. 1902-03.

     9. MacDaniels, L. H. and W. C. Muenscher Black walnut toxicity.
     Northern Nut Growers' Assn., Proc. 1940 172-179. 1941.

     10. Massey, A. B. Antagonism of the walnuts (_Juglans nigra I._ and
     _J. cinerea_.) in certain plant associations. Phytopathology 15:
     773-784. 1925.

     11. Pirone, P. P. The detrimental effect of walnut to Rhododendrons
     and other ornamentals. Nursery Disease Notes 11; 1-4. 1938.

     12. Plinius Secundus, C. The historie of the world. English
     translation by P. Holland, A. Islip, London. 1601.

     13. Schneiderhan, F. J. The black walnut (_Juglans nigra L._) as a
     cause of death to apple trees. Phytopathology 17: 529-540. 1927.




Possible Black Walnut Toxicity on Tomato and Cabbage

_By OTTO A. REINKING

New York State Agricultural Experiment Station_

Public-domain text, read in full here on John Shaqi.

Opening the text

Science

Northern Nut Growers Association Thirty-Fourth Annual Report 1943

Northern Nut Growers Association -- Periodicals; Nut trees -- Periodicals; Nuts -- Periodicals

2. This toxicity is due to the action of juglone, the oxidized form of
hydrojuglone, a non-toxic substance occurring in the inner bark and
green husk of walnuts.

3. Juglone has been used in dermatology to cure various skin disorders
including both bacterial and fungus diseases.

4. As a seed protectant, juglone is unsuitable because of its inherent
toxicity to the non-cutinzed root surfaces.

5. Laboratory and field tests have shown juglone to be an excellent
fungicide


LITERATURE CITED

     1. Bernthsen, A. and A. Semper Ueber die Constitution des Juglons
     und seine Synthese aus Naphtalin. Ber. d. deutsch. Chem. Gesellsch.
     20: 934-941. 1887.

     2. Brissemoret et Michaud Sur une nouvelle classe de medicaments de
     la peau; les quinones peroxydes. Jour. pharm. et chim. 7e ser.
     16:283-285. 1917.

     3. Brown, Babette I. Injurious influence of bark of black walnut on
     seedlings of tomato and alfalfa. Northern Nut Growers' Assn., Proc.
     1942:97-102. 1943,

     4. Combes, R. Sur un procede de preparation et de purification des
     derives oxyanthraquinoniques et oxynapthoquinoniques en general, du
     juglon et de l'emodine en particulier. Bull. soc. chim. 4c ser. 1:
     800-816. 1907.

     5. Cook, Mel T. Wilting caused by walnut trees. Phytopathology
     11:346. 1921.

     6. Davis, Everett. The toxic principle of _Juglans nigra_ as
     identified with synthetic juglone, and its toxic effects on tomato
     and alfalfa plants. Amer. Jour. Bot. 15: 620. 1928.

     7. Greene, K.W. The toxic (?) effect of the black walnut: Northern
     Nut Growers' Assn., Proc. 1929: 152-156. 1930.

     8. Jones, L. R. and W. J. Morse The shrubby cinquefoil as a weed.
     16th Ann. Rpt, Vt, Agr. Expt. Sta. 188-190. 1902-03.

     9. MacDaniels, L. H. and W. C. Muenscher Black walnut toxicity.
     Northern Nut Growers' Assn., Proc. 1940 172-179. 1941.

     10. Massey, A. B. Antagonism of the walnuts (_Juglans nigra I._ and
     _J. cinerea_.) in certain plant associations. Phytopathology 15:
     773-784. 1925.

     11. Pirone, P. P. The detrimental effect of walnut to Rhododendrons
     and other ornamentals. Nursery Disease Notes 11; 1-4. 1938.

     12. Plinius Secundus, C. The historie of the world. English
     translation by P. Holland, A. Islip, London. 1601.

     13. Schneiderhan, F. J. The black walnut (_Juglans nigra L._) as a
     cause of death to apple trees. Phytopathology 17: 529-540. 1927.




Possible Black Walnut Toxicity on Tomato and Cabbage

_By OTTO A. REINKING

New York State Agricultural Experiment Station_

Public-domain text, read in full here on John Shaqi.

Northern Nut Growers Association Thirty-Fourth Annual Report 1943

Northern Nut Growers Association Thirty-Fourth Annual Report 1943

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