| Material Information
||Herbicides and the foliage industry
||Mimeo report - ARC-A
||5 leaves : ; 28 cm.
||Poole, R. T ( Richard Turk )
Conover, Charles Albert, 1934-
Waters, W. E ( Will E )
Agricultural Research Center (Apopka, Fla.)
||University of Florida, IFAS, Agricultural Research Center
||Place of Publication:
||Foliage plants -- Growth -- Florida ( lcsh )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||by R.T. Poole, C.A. Conover and W.E. Waters.
| Record Information
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 71194288
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not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
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site maintained by the Florida
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Copyright 2005, Board of Trustees, University
RERBICIbES AND tHE FOLIAGE INDUSTRY
II. Non Crop Areas
R. T. Poole, C. A. Conover and W. E. Waters
Agricultural Research Center Apopka
Mimeo Report ARC-A 1972-2
Herbicides discussed in this paper at the rates sugge ed will cause
soils to be unproductive for approximately a year or longer. HowOg,27 1976
there are many areas throughout the foliage industry where the use of
i.F.A.S. Univ. of Florida
these chemicals will be beneficial. F.A.S. v.ofFlorida
Weeds in the aisles, along edges of growing structures and along
fence rows are unnecessary and detrimental. The immediate effect is an
appearance of uncleanliness, which indicates to many buyers that the same
neglect occurs in foliage plant culture. In addition, weeds mar the
aesthetic beauty of the property and influence the regard employees
exercise in their treatment of plants.
Weeds also cost money, and removal of weeds in the stock beds,
propagation benches and in potted plants are expensive. Weeds outside
the immediate growing area can also be expensive and dangerous as they
can impair visibility of traffic, signs and rubbish which provides cover
Weeds harbor insects and diseases and their elimination around
growing areas will reduce problems of insect and disease pests. Weeds
also damage building structures, they crack concrete and pierce asphalt
and also present a fire hazard.
During the last two years two experiments were established at the
Agricultural Research Center Apopka to test the durability and select-
ivity of several herbicides. Materials selected for tests are listed in
The first experiment was initiated April 22, 1970. Materials were
applied along chain link fences north and south of the Center. Percent
weed control and weed species present were determined July 1, August 3,
November 30, 1970 and April 1, 1971. The second experiment was initiated
March 15, 1971 along the fence bordering the western edge of the Center.
Evaluations were made April 15, June 15, September 15 and December 15,
1971. One half of the fence row south of the entrance in Exp. 2 was
surrounded by Argentine Bahia, the half north of the entrance way was not
cultivated and had many perennial field weeds growing within the treated
area. Percent weed control of Exp. 1 is given in Table 2. All herbicides
except Princep at 10 pounds active ingredient per acre (ai/A) gave satis-
factory results, although GS-14254 and Bromacil were apparently longer
lasting than the others. Bahia was the most frequent intruder of treated
plots, entering by means of runners from the adjacent lawn. Pramitol.,
GS-14254 and Bromacil were the most successful chemicals to prevent
entrance of Bahia. Richardia scabra (Florida Purslane) and Chenopedium
ambrosides (Jerusalem Oak) were next in importance. Princep, Telvar,
GS 14254 and Bromacil were most successful in controlling Florida purslane.
Pramitol and Telvar controlled Jerusalem Oak.
Herbicides which gave the best weed control in Bahia lawn in Exp. 2
were Tandex, Pramitol and GS 14254 (Table 3). Similar results were obtained
along the fence in the field with the addition of Bromacil as a satisfactory
herbicide (Table 4). Florida purslane was usually the first annual to
appear in all plots.
Of the herbicides tested and currently on the market Tandex and Pramitol
at the rates used appear to be the most satisfactory. Bromacil has long
lasting effects, but should be used with caution as it has been known to
kill trees whose roots enter into the zone of application. Fumes from
these herbicides may be toxic when used in an enclosed structure. However,
when used in well ventilated areas, there is little possibility of damage
to foliage plants. The use of these herbicides will improve the appearance
and efficiency of the foliage nursery. These herbicides should not be
applied to soil that may be used for growing foliage plants.
MENTION OF A MATERIAL DOES NOT IMPLY ANY GUARANTEE OF EFFECTIVENESS
OR SAFETY. SPECIFIC TRADE NAMES USED DOES NOT IMPLY ENDORSEMENT OR
PREFERENCE OF THESE COMPOUNDS OVER EQUIVALENT COMPOUNDS.
Table 1. Herbicides tested for durability and non selectivity.
Herbicide Formulation ai/A Lbs Mat/A Mat/1000 ft
Tandex 80 WP 10 12.5 4.6 oz
Princep1 80 WP 10 12.5 4.6 oz
Atratol 8 P 10 125 3 lbs
Pramitol 5 PS 40 800 18.4 Ibs
Karmex1 80 WP 10 12.5 4.6 oz
Sinbar 80 WP 10 12.5 4.6 oz
Telvar 80 WP 10 12.5 4.6 oz
GS 14254 5 P 40 800 13.4 Ibs
Bromacil 80 WP 10 12.5 4.6 oz
1Paraquat added (1 quart/100 gal).
Table 2. Percent weed control. Herbicides applied April 22,
Herbicide ai/A Jul 1,70 Aug 3,70 Nov 30,70 Apr 1,71
Tandex 10 93 98 80 65
Princep1 10 86 70 38 12
Atratol 10 81 71 60 60
Pramitol 40 98 98 68 66
Karmex1 10 88 89 58 56
Sinbar 10 97 94 63 66
Telvar1 10 96 91 78 61
GS-14254 40 98 99 85 85
Bromacil 10 95 99 76 79
1Paraquat added.(1 quart/100 gal).
Table 3. Percent weed control in Bahia
lawn. Herbicides applied March 15,
Herbicides ai/A Apr. 15 June 15 Sept. 15 Dec. 15
Tandex 10 42 98 94 85
Atratol 20 32 58 45 55
Pramitol 44 65 98 98 87
Karmex + MSMA1 7+1 30 40 50 60
Sinbar 10 50 94 62 50
Telvar 10 45 28 12 15
Bromacil 10 40 95 75 65
GS 14254 44 70 96 95 92
IParaquat added (i quart/100 gal).
Table 4. Percent weed control along fence in non-cultivated field.
Herbicides applied March 15, 1971.
Herbicide ai/A Apr. 15 June 15 Sept. 15 Dec. 15
Tandex 10 75 98 82 80
Atratol 20 50 85 40 35
Pramitol 44 78 96 94 87
Karmex + MSMA1 7+1 40 62 70 72
Sinbar 10 70 85 80 55
Telvar 10 35 32 70 68
Bromacil 10 68 90 85 80
GS 14254 44 60 80 92 85
Iparaquat added (1 quart/100 gal).