Phytopathology, Volume 8American Phytopathological Society, 1918 List of members of the society accompany v. 22 no. 9, v. 25 no. 5, v.38 no. 8, v.43 no. 5. |
From inside the book
Results 1-5 of 100
Page x
... quarantines against , 485 ; hibernation of spores of Cronartium ribicola on , 290 ; overwintering of Cro- nartium ribicola on , 617 ROBERTS , JOHN W. , Plum blotch ( ab- stract ) , 74 Root , rot . Thielavia , 77 ; rots of X INDEX.
... quarantines against , 485 ; hibernation of spores of Cronartium ribicola on , 290 ; overwintering of Cro- nartium ribicola on , 617 ROBERTS , JOHN W. , Plum blotch ( ab- stract ) , 74 Root , rot . Thielavia , 77 ; rots of X INDEX.
Page 28
... Spores of this orange rust from both raspberries and blackberries were sown on wet slides and kept in a moist chamber for two days , in order to observe their germination . In both cases the spores germinated readily and drawings were ...
... Spores of this orange rust from both raspberries and blackberries were sown on wet slides and kept in a moist chamber for two days , in order to observe their germination . In both cases the spores germinated readily and drawings were ...
Page 35
... spores of Cronartium ribicola is one of the most important factors in the spread 300 2004 7004 Minules FIG . 1 ... spore adrift in an air current is acted on by two forces - the horizon- tal pressure of the wind and the downward pull of ...
... spores of Cronartium ribicola is one of the most important factors in the spread 300 2004 7004 Minules FIG . 1 ... spore adrift in an air current is acted on by two forces - the horizon- tal pressure of the wind and the downward pull of ...
Page 36
In determining the time of spore fall air - dried spores were released in- stantaneously and automatically at the upper end of a long cardboard tube 9 inches in diameter . A flat disk revolving slowly and uniformly be- low this tube ...
In determining the time of spore fall air - dried spores were released in- stantaneously and automatically at the upper end of a long cardboard tube 9 inches in diameter . A flat disk revolving slowly and uniformly be- low this tube ...
Page 37
... spore - forms is not understood , the com- plete cycle of development is passed on the fern . Bartholomew comes to the conclusion , after determining both the thick- and thin - walled spores , that this rust has an alternate stage to be ...
... spore - forms is not understood , the com- plete cycle of development is passed on the fern . Bartholomew comes to the conclusion , after determining both the thick- and thin - walled spores , that this rust has an alternate stage to be ...
Contents
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Common terms and phrases
Abies acid aecial stage aeciospores agar Agriculture Alternaria appear areas Arth bean beet blight Bordeaux mixture Bureau of Plant cabbage Caeoma caused cent cerebrum Coleosporium collected color comptoniae conidia coöperation cotyledons Cronartium Cronartium ribicola crop developed effect Expt Federal Horticultural Board field formaldehyde fruit fungi fungus Fusarium germination greenhouse growth healthy Hedgcock host hyphae hypocotyls illus infection injury inoculations investigation Jour leaf leaf-roll leaves lesions lightning lingam Literature cited Melampsora mosaic disease muscicola mycelium nursery observed organism overwintering parasitic pathologists Peridermium Peridermium cerebrum Phoma Phytopathology pine Pinus Plant Disease Survey Plant Industry plant pathology plates potato Pucciniastrum pycnidia reported ribicola rust scab season seed treatment seedlings showed smut soil solution species specimens spores sporophores spots spraying stem sterilized strains surface telial tests tion tissues tomato trees tritici tubers uredinia uredinial urediniospores varieties wheat wilt Wisconsin writer
Popular passages
Page 171 - person" as used in this Act shall be construed to import both the plural and the singular, as the case demands, and shall include corporations, companies, societies and associations. When construing and enforcing the provisions of this Act, the act, omission, or failure of any officer, agent, or other person acting for or employed by any...
Page 172 - Congress, later of the office of foreign seed and plant Introduction of the Bureau of Plant Industry.
Page 171 - Nursery stock, including all field-grown florists' stock, trees, shrubs, vines, cuttings, grafts, scions, buds, fruit pits and other seeds of fruit and ornamental trees or shrubs, and other plants and plant products for propagation, except field, vegetable, and flower seeds, bedding plants and other herbaceous plants, bulbs, and roots...
Page 141 - This latter probability has an important bearing both from the standpoint of the public health and economic interests, and the Bureau of Plant Industry of the United States Department of Agriculture has undertaken an investigation of corn with a view to determining its possible relation to the development of pellagra.
Page 155 - An act to provide further for the national security and defense by encouraging the production, conserving the supply, and controlling the distribution of those ores, metals, and minerals which have formerly been largely imported, or of which there is or may be an inadequate supply.
Page 3 - Does it not seem plausible that they cause the subsequently apparent change? It does to me, but this is the extent of my own faith; we should not say the conclusion is reached and the cause of the difficulty definitely ascertained. So far as I know, the idea is an entirely new one — that bacteria cause disease in plants — though abundantly proved in the case of animals.
Page 156 - ... reasonable and as nearly as may be to cover the cost for the service rendered: Pro-vided, That certificates issued by the authorized agents of the Department shall be received in all courts of the United States as prima facie evidence of the truth of the statements therein contained $459,000.
Page 171 - Act, the act, omission, or failure of any officer, agent, or other person acting for or employed by any corporation, company, society, or association, within the scope of his employment or office, shall in every case be also deemed to be the act, omission,, or failure of such corporation, company, society, or association as well as that of the person.
Page 21 - ... There is always danger that the dust mixture may be carried by the wind to the other plats, and this difficulty makes it impossible to select trees in adjoining rows for different kinds of treatment when a dust mixture is used. For most of the experiments performed, the plats were arranged so that a part of each row of plants was included in each of the different plats. With such an arrangement there is less danger that the dust mixture may affect the results in the sprayed and the untreated...
Page 156 - Agriculture to investigate and certify to shippers the condition as to soundness of fruits and vegetables and other food products when received at important central markets.