. Circular. Agriculture -- Massachusetts. Circular No. 41. April, 1914. MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION. AMHERST. THE CONTROL OE ONION SMUT. Bv George E. Stone. Onion smut has been known in Massacliusetts for about forty years, Mr. Benjamin P. Ware having referred to the injury caused by this fungus in the Massachusetts State Board of Agriculture Report for iS6g — 70. The smut germs infect the seedlings at a very early stage, the disease taking the form of dark-colored or sooty masses, and as the onion matures the black areas of pustules may be noticed on the leaves and bulbs. Si
. Circular. Agriculture -- Massachusetts. Circular No. 41. April, 1914. MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION. AMHERST. THE CONTROL OE ONION SMUT. Bv George E. Stone. Onion smut has been known in Massacliusetts for about forty years, Mr. Benjamin P. Ware having referred to the injury caused by this fungus in the Massachusetts State Board of Agriculture Report for iS6g — 70. The smut germs infect the seedlings at a very early stage, the disease taking the form of dark-colored or sooty masses, and as the onion matures the black areas of pustules may be noticed on the leaves and bulbs. Since infection takes place in the early stages of the seedling, onion sets being immune, any method which will kill the spores on the seed or in the soil must be beneticial. Where onions are grown year after year on the same land the smut shows a marked tendency to increase, but even here it can be controlled by the use of proper remedial Fk;. I. Shijwiiig Planet Jr. cultivatur with fcirnudin drip. Positive results have been obtained by applying per acre 100 pounds sulfur thoroughly mixed with 50 pounds air-slaked lime in the drills, and ground lime, drilled in with a fertilizer drill, at the rate of 75 to 100 bushels, is also good. But by far the best results have been ob- tained from the use of formalin, which may be applied at the rate of one ounce to one gallon of water (i-i 28), or in even weaker solutions. Some onion growers in the Connecticut valley, where the crop is grown extensively and with great success, occasionally use the for- malin stronger than the amounts recommended, but this results in injury to the crop, i-ioo parts, which is sometimes used, is capable of killing almost anything, and in our opinion is too strong to apply to Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work
Size: 2199px × 1136px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthor, bookcentury1900, bookdecade1900, bookpublisheramherst
