Bulletin Volume 185-220

Bulletin Volume 185-220

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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. 1918 edition. Excerpt: ... previously indicated the sweet potato often does best on lands below the average in fertility and made productive by the use of fertilizers. It has been our experience that it is a crop that does not require high fertilization and some of our most satisfactory yields have been made on newly cleared lands with moderate amounts of commercial fertilizers. The crop does not seem to respond to changes in kind and quantity of fertilizers as freely as does cotton and some other farm crops and the work that we have done first at Mc Neilland later at Poplarville with fertilizers under potatoes does not lead to any very positive conclusions on our part. A study of the fertilizer work carried on at other Southern Stations would also fail to lead us to any very definite conclusions as to how the crop should be fertilized. Thus in Florida as a result of carefully conducted fertilizer work extending over five years the most pronounced difference in yield due to fertilizers was the leaving off of potash from mixtures containing nitrogen and phosphorus. By so doing the yield as reported in Bulletin No. 156 of the Florida Experiment Station was reduced from 204 bushels with the complete fertilizer to 65 bushels where only nitrogen and phosphorus were applied. On the other hand one of the conclusions drawn from a number of cooperative tests conducted by the Alabama Experiment Station and reported in Bulletin No. 184 is, "Taken as a whole these experiments seem to indicate that the popular idea that potash is the most important constituent in a fertilizer for sweet potatoes is incorrect, at least as to practically all the soils here represented. On the other hand, these tests show that phosphate and nitrogen were much more important than potash...".show more

Product details

  • Paperback | 218 pages
  • 189 x 246 x 12mm | 399g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236973682
  • 9781236973689