Corn Day Annual for the Schools of Illinois

Corn Day Annual for the Schools of Illinois

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ...matter also renders available the potassium which in normal soils is usually in sufiicient abundance to supply standard yields. This method of supplying plant food to the soil in connection with good systems of crop rotation, not only increases the annual yields of each crop in the rotation, but leaves the soil permanently richer in plant food, after the single applications as stated above and the four or five crops of the rotation have been produced. Plan of Soil Treatment, the Corn Series.--The following is the general plan of soil treatment for ten plots in each of a series of five at the University of Illinois. The figures show the yields of corn in one season: plot No-Soil treatment. Corn yield.._'A 1 None _ _ _ _ _-_ _ _ _ _ _ _ _..............: .............................................. 60 -, . 2 Legurna (catch crops and crop residues)........... 60. 3 Manure....................-............-.-.......... 75 ' 4 Legume, lime----------------------------------------------------------------65 5 Manure, lime. _.....-------------------------------------------------30 6 Legums, lime, phosphorus......... 87 7 Maniue, lime, phosphorus.......... 90 8 Logume, lime, phosphorus, potassium.. 90 9 Manure, lime, phosphorus, potassium... _ _ _-_93 10 legume (manure, lime, phosphorus, potassium, Xv)........................... 96 QUESTIONS. 1. Why does the farmer raise such good crops of corn on new ground'? 2. What do the farmers in your locality do to fertilize their corn ground? 3. Are these methods good or bad? Why? 4. What is the meaning of the term "Permanent Soil Fertility?" 5. Name the steps necessary in building up the soil permanently on a run-down Illinois farm? (See Circular 168, "Bread from Stones, ..".show more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236798929
  • 9781236798923