ScienceJohn Michels (Journalist) 1939 |
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Page xxiv
... plant . The classical experience of inducing plants to flower by girdling would suggest that the leaves may not be the exclusive means of con- trol of the blossom - inducing stimulus . To observe the response of some plants to the trans ...
... plant . The classical experience of inducing plants to flower by girdling would suggest that the leaves may not be the exclusive means of con- trol of the blossom - inducing stimulus . To observe the response of some plants to the trans ...
Page 273
... plants examined . Cage experiments at the Greeley Potato Experiment Station begun on July 31 with plants known to be free of psyllids and disease , have demonstrated that the Say's pentatomid , feeding on the plants , is defi- nitely ...
... plants examined . Cage experiments at the Greeley Potato Experiment Station begun on July 31 with plants known to be free of psyllids and disease , have demonstrated that the Say's pentatomid , feeding on the plants , is defi- nitely ...
Page 331
... plant pathology and human affairs , development of plant pathology , disease in plants , parasitism , the influence of environment on plant diseases and principles of control measures . The following 336 pages are devoted to specific ...
... plant pathology and human affairs , development of plant pathology , disease in plants , parasitism , the influence of environment on plant diseases and principles of control measures . The following 336 pages are devoted to specific ...
Contents
40 | 4 |
Fishes Viviparous Cyprinodont C L TURNER | 42 |
ADAMS R W A Noyes Laboratory of Chemistry_71 | 65 |
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