A Study in Cereal Rusts Physiological Races
A Study in Cereal Rusts Physiological Races
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In our eReader you can find the full English version of the book. Read A Study in Cereal Rusts Physiological Races Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Study in Cereal Rusts Physiological Races
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Minnesota No. 163 wheat was used. After inoculation plants were all placed under bell jars and kept under uniform conditions. Arranged according to virulence, the most severely affected being placed first, they would be arranged as follows: III, II, IV, I.
This was tried a second time with exactly the same results. The plants appeared about the same, all growing fairly well in the agar. All were well infected, producing a fairly large number of large, healthy pustules. They were kept three week...s after inoculation and by this time there was not much difference between II, IV, and I, but III was still much more virulently attacked. It seems, therefore, that an excess of nitrogen does not necessarily, in itself, cause an increase in the amount of rust and an excess of phosphorus does not affect it very appreciably.
The effect of excluding nitrogen and phosphorus was next tried. Sach's modified medium plus one per cent of agar was again used and in I no potassium nitrate was added while calcium phosphate was ex- cluded from II.
What to read after A Study in Cereal Rusts Physiological Races?
You can find similar books in the "Read Also" column, or choose other free books by E C Elvin Charles Stakman to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Minnesota No. 163 wheat was used. After inoculation plants were all placed under bell jars and kept under uniform conditions. Arranged according to virulence, the most severely affected being placed first, they would be arranged as follows: III, II, IV, I.
This was tried a second time with exactly the same results. The plants appeared about the same, all growing fairly well in the agar. All were well infected, producing a fairly large number of large, healthy pustules. They were kept three week...s after inoculation and by this time there was not much difference between II, IV, and I, but III was still much more virulently attacked. It seems, therefore, that an excess of nitrogen does not necessarily, in itself, cause an increase in the amount of rust and an excess of phosphorus does not affect it very appreciably.
The effect of excluding nitrogen and phosphorus was next tried. Sach's modified medium plus one per cent of agar was again used and in I no potassium nitrate was added while calcium phosphate was ex- cluded from II.
What to read after A Study in Cereal Rusts Physiological Races?
You can find similar books in the "Read Also" column, or choose other free books by E C Elvin Charles Stakman to read onlineMoreLess
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