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| Web URL(s): | https://gsrpdf.lib.msu.edu/?file=/1920s/1928/280361B.pdf#page=2
Last checked: 01/25/2017
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| Publication Type:
| Professional |
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| Content Type: | Q & A |
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| Corporate Author(s): | USGA Green Section |
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| Title: | Comparative value of mowrah meal and corrosive sublimate for worming greens |
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| Section: | Questions and answers
Other records with the "Questions and answers" Section
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| Source: | The Bulletin of the United States Golf Association Green Section. Vol. 8, No. 3, March 1928, p. 62-63. |
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| Publishing Information: | Washington, DC: USGA Green Section |
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| # of Pages: | 2 |
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| Question: | "If pure mowrah meal, unadulterated, packed in original export bags can be secured at a price ranging from $40 to $50 per ton, f. o. b., Baltimore, is it your opinion that the average golf course can secure equally good results by using this material instead of corrosive sublimate at the present market price, which we understand is around $1.40 per pound? Is it not true that mowrah meal can be safely handled and applied by any greenkeeper, whereas, corrosive sublimate is a deadly poison and must be handled with care? As mowrah meal contains from 4 to 6 per cent ammonia and approximately 1 per cent, each, phosphoric acid and potash, can it not be considered a complete fertilizer, whereas corrosive sublimate is merely a poison?" |
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| Source of Question: | Maryland |
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| Answer/Response: | "Our experience has shown mowrah meal to be an effective earthworm eradicator, provided it has not lost its original active properties or has not been adulterated. It is not, however, quite as effective as corrosive sublimate. One objection to the use of mowrah meal has been the cost, but with mowrah meal selling at $40 to $50 per ton and corrosive sublimate at $1.40 per pound the difference in cost would not amount to much applied at the rates usually recommended. It is true that mowrah meal may be handled with perfect safety while corrosive sublimate is a deadly poison. Of course, corrosive sublimate has been used so much in recent years in brown-patch control that the danger from its use is pretty well known and generally guarded against. Corrosive sublimate also has a tendency to burn the grass if not properly applied, while mowrah meal shows no injurious effect when applied at the rate of 15 pounds per 1,000 square feet, which is the usual recommendation. It is also true that mowrah meal contains the three plant food elements (nitrogen, phosphoric acid and potash) that are essential to what is generally recognized as a complete fertilizer. The percentages of these elements are low, and no one would be justified in paying $40 or $50 a ton for mowrah meal based on its fertilizing value alone. For your further information we are quoting passages from the May, 1924, BULLETIN of the Green Section as follows: "From the standpoint of economy and efficiency, corrosive sublimate is without question the best substance to use to rid turf of earthworms. It is exceedingly efficient if properly used. But here lies the difficulty. It is quite apparent that, notwithstanding all that has been written and said with regard to the use of corrosive sublimate as an earthworm eradicator, there are many who have injured their turf by applying it improperly.... Corrosive sublimate is a violent poison and due care must be exercised in its use.... Mowrah meal is a very effective earthworm eradicator provided it has not lost its original active properties by improper storage or has not been adulterated. Furthermore, it possesses some fertilizer value, although not much when applied at the rate recommended for earthworm eradication. Burning of the grass may occur with heavy applications of mowrah meal, but not the slightest trace of burning has been noted from the application of 15 pounds to 1,000 square feet. Mowrah meal deteriorates with age, especially if stored in a damp place. It is also subject to adulteration with sand or similar inert matter. These facts should be borne in mind by the purchaser.... Until something better has developed, it is urged that corrosive sublimate or mowrah meal be used as here suggested. The careful and systematic use of either will give highly satisfactory results and will have a tendency permanently to lessen the earthworm problem."" |
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| Keywords: | TIC Keywords: Chemical safety; Comparisons; Earthworm control; Fertilizer costs; Fertilizer evaluation; Fertilizer recommendations; Inorganic mercury; Mowrah meal; Recommendations
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related article "Earthworms" The Bulletin of the United States Golf Association Green Section, 4(5) May 22, 1924, p. 115-116 R=49250 R=49250 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
USGA Green Section. 1928. Comparative value of mowrah meal and corrosive sublimate for worming greens. Bull. U.S. Golf Assoc. Green Sec. 8(3):p. 62-63. |
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MSU catalog number: SB 433.15 .B85 |
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