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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
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    <item>
      <title>HERBICIDES FOR ROADSIDES</title>
      <link>https://trid.trb.org/View/97574</link>
      <description><![CDATA[A GENERAL SURVEY IS MADE OF WEED CONTROL MEASURES ON WHICH THERE IS WIDESPREAD AGREEMENT. THE CHOICE OF A CHEMICAL SHOULD BE BASED ON SUCH CONSIDERATIONS AS THE SPECIES OF PLANTS, WHETHER HERBACEOUS OR WOOD; THE TIMING OF SPRAYING IN RELATION TO STAGE OF PLANT DEVELOPMENT; SPECIFIC SOIL AND CLIMATIC CONDITIONS; THE TIME OF YEAR OF TREATMENT; THE SUSCEPTIBILITY OF ADJACENT PLANTS; THE DEGREE OF CONTROL DESIRED; AND RELATIVE COSTS. SOME CHEMICALS MAY NOT KILL CERTAIN WEEDS, WHILE ON THE OTHER HAND SOME CHEMICALS MAY KILL DESIRABLE AND PROFITABLE VEGETATION. THE EFFECTS OF VARIOUS MODERN CHEMICALS ON DIFFERENT KINDS OF PLANTS ARE DESCRIBED. THE DISCUSSION CONCLUDES WITH A REVIEW OF THE DIFFERENT EQUIPMENT REQUIREMENTS OF VARIOUS KINDS OF WEED CONTROL.]]></description>
      <pubDate>Wed, 22 Nov 2000 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/97574</guid>
    </item>
    <item>
      <title>A PROGRESS REPORT ON MALEIC HYDRAZIDE FOR GROWTH CONTROL OF GRASS AND TREES</title>
      <link>https://trid.trb.org/View/104036</link>
      <description><![CDATA[THE SCOPE AND COSTS OF THE GROWING HIGHWAY AND UTILITY MAINTENANCE PROBLEM ARE POINTED OUT. MALEIC HYDRAZIDE, A CHEMICAL GROWTH INHIBITOR, IS DISCUSSED FOR GRASS AND TREE GROWTH CONTROL. RATES, TIMING, SPRAYING TECHNIQUES AND RESULTS ARE DETAILED BASED ON EXTENSIVE TEST PROGRAMS. ACCEPTANCE AND FUTURE TRENDS ARE ALSO EMPHASIZED INSOFAR AS THE CHEMICAL PERTAINS TO GRASS AND TREES./AUTHOR/]]></description>
      <pubDate>Mon, 12 Dec 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/104036</guid>
    </item>
    <item>
      <title>MANAGEMENT OF TURFGRASS TREATED WITH MALEIC HYDRAZIDE</title>
      <link>https://trid.trb.org/View/110686</link>
      <description><![CDATA[A FIELD EXPERIMENT WAS CONDUCTED FOR TWO SEASONS TO STUDY THE EFFECT OF MALEIC HYDRAZIDE (MH) ON A MIXED STAND OF PERENNIAL GRASSES AND TO INVESTIGATE THE INTERRELATIONSHIPS OF NITROGEN FERTILIZER TREATMENTS, MOWING SCHEDULES, AND APPLICATION RATES OF GROWTH RETARDANT. MH LIMITED THE HEIGHT AND DRY WEIGHT OF CLIPPINGS OF ALL SPECIES INCLUDING KENTUCKY BLUEGRASS, ORCHARDGRASS, AND QUACKGRASS AT BOTH 4 AND 8 LB/ACRE. THE HIGHER RATE GAVE BEST RESULTS. MH REDUCED THE NUMBER AND HEIGHT OF ORCHARDGRASS AND QUACKGRASS SEEDHEADS AND REDUCED THE HEIGHTS OF BLUEGRASS SEEDHEADS SO THAT THEIR PRESENCE WAS NOT OBJECTIONABLE. IT REDUCED GROWTH OF GRASSES THROUGHOUT THE PERIOD OF NORMALLY HEAVY GROWTH. A SLIGHT INCREASE IN GROWTH OF TREATED GRASS FOLLOWED DURING THE SUMMER WHICH WAS ATTRIBUTED TO UTILIZATION OF CARBOHYDRATES ACCUMULATED DURING GROWTH SUPPRESSION. MH CAUSED THINNING OF THE SOD DURING THE SPRING, WHICH FAVORED ENCROACHMENT OF WEEDS. NORMAL STAND DENSITY RETURNED DURING THE SUMMER, BUT WEED PROBLEMS REMAINED. LOW CUTTING INCREASED THE CLIPPING WEIGHTS BUT NOT THE NUMBER OF MOWINGS NECESSARY. PLOTS CUT HIGH HAD GREATER DENSITY OF GRASS AND BETTER COLOR. /AUTHOR/]]></description>
      <pubDate>Mon, 31 Jan 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/110686</guid>
    </item>
    <item>
      <title>SELECTION, ESTABLISHMENT AND MAINTENANCE OF VEGETATION ALONG NORTH CAROLINA'S ROADSIDES. FINAL REPORT</title>
      <link>https://trid.trb.org/View/274049</link>
      <description><![CDATA[Plant adaptation zone delineations of North Carolina were generated by overlaying individual maps of North Carolina's environmental and geographical conditions.  Selected plant types were established throughout North Carolina to evaluate their establishment and long term adaptation.  The use of tall fescue and weeping lovegrass as nurse crops in the establishment of centipedegrass and bahiagrass was examined. The potential use of minimum tillage in the establishment of selected warm season grasses was studied.  Growth retardants were evaluated for their potential use on tall fescue and bahiagrass turf.  Minimum tillage preparations prior to plugging of warm season grasses provided an advantage over conventional procedures that persisted for 2 years after establishment.  Delineated adaptation zones maps supported field observations for bahiagrass, bermudagrass, tall fescue and weeping lovegrass.  Spring applications of maleic hydrazide (4 lbs ai/A), Embark (0.38 lbs ai/A), or Limit (2.5 lbs ai/A) provided acceptable suppression of tall fescue seedheads.  Tall fescue growth retardant treatments after the initiation of spring seedhead development and before a seedhead length of 1.0 to 1.6 inches was reached were effective in suppressing the development and elongation of seedheads.  Bahiagrass seedheads were significantly suppressed following applications of maleic hydrazide at 4 lb ai/A and Oust at 0.5 oz ai/A.  While maleic hydrazide and Oust treatments in May and June resulted in seedhead control through July and most of August, reduced suppression was observed for late August and September seedheads.]]></description>
      <pubDate>Sat, 28 Feb 1987 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/274049</guid>
    </item>
    <item>
      <title>THE INFLUENCE OF NITROGEN AND MALEIC HYDRAZIDE (MH-30) ON THE GROWTH AND CHEMICAL COMPOSITION OF WILMINGTON BAHIAGRASS (PASPALUM NOTATUM FLUGGE). A SPECIAL STUDY OF SELECTION, ESTABLISHMENT AND MAINTENANCE OF VEGETATION FOR EROSION CONTROL OF ROADSIDE AREAS IN GEORGIA.</title>
      <link>https://trid.trb.org/View/30336</link>
      <description><![CDATA[A Wilmington bahiagrass sod was established from seed in June, 1970, with fertilization consisting of 1680 kg/ha of (N-P-K) and ground dolomitic limestone at two metric tons per hectare. A randomized complete block split-split plot design with three replications was used to study N rates of 0, 112, and 224 kg N/ha from ammonium nitrate and maleic hydrazide rates of 0, 4.5, 9.0, and 13.5 kg MH-30/ha. Split-split plot treatments were time of MH-30 application. Data collected were color ratings, plant height, seedhead and tiller counts, percent N and total nonstructural carbohydrate content.]]></description>
      <pubDate>Wed, 04 Feb 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/30336</guid>
    </item>
    <item>
      <title>RESULTS ASSESSED OF TEN YEAR PROGRAM OF MASSACHUSETTS ROADSIDE DEVELOPMENT</title>
      <link>https://trid.trb.org/View/103367</link>
      <description><![CDATA[THE UNIVERSITY OF MASSACHUSETTS, IN COOPERATION WITH THE FEDERAL HIGHWAY ADMINISTRATION AND THE MASSACHUSETTS DEPARTMENT OF PUBLIC WORKS, HAS BEEN INVOLVED IN A 10-YEAR ROADSIDE DEVELOPMENT RESEARCH PROGRAM FROM 1962 UNTIL 1971. THE PURPOSE OF THIS INVESTIGATION WAS TO AID THE MASSACHUSETTS DEPARTMENT OF PUBLIC WORKS WITH ITS HIGHWAY MAINTENANCE PROBLEMS AND TO TEST NEW METHODS AND MATERIALS THAT MIGHT BE PRACTICAL AND ECONOMICAL IN MASSACHUSETTS. THE AREAS OF INVESTIGATION DISCUSSED ARE GRASS SEED, MULCH, FERTILIZATION, SEEDING TIME, MALEIC HYDRAZIDE, CAPE COD DUNES, GRASS-AREA REDUCTION, WOOD CHIPS, SWEET FERN, CROWN VETCH, BREEDING PROGRAM, SOIL STERILANTS, BARE-ROOT SEEDLINGS, AND CONTAINER-GROWN WOODY PLANTS. /IRRD/]]></description>
      <pubDate>Mon, 02 Apr 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/103367</guid>
    </item>
    <item>
      <title>REPORT ON USE OF MALEIC HYDRAZIDE FOR TEMPORARY GROWTH INHIBITION OF GRASS</title>
      <link>https://trid.trb.org/View/104298</link>
      <description><![CDATA[APPLICATION OF MALEIC HYDRAZIDE (MH) IS SUGGESTED ONLY FOR ESTABLISHED TURF AREAS. SINCE APPROXIMATELY 24 HOURS ARE REQUIRED FOR COMPLETE ABSORPTION OF AN MH SPRAY, RAINFALL RECORDS WITHIN THIS PERIOD WILL ASSIT IN INTERPRETATION OF RESULTS. A FALL SPRAY OF 4 OR 6 POUNDS OF MH IN NOT LESS THAN 40 GALLONS OF WATER PER ACRE APPLIED TO GREEN TURF IS SUGGESTED. MOWING AFTER APPLICATION IS NOT REQUIRED. AN EARLY SPRING APPLICATION AT 4 OR 6 POUNDS IS NOT LESS THAN 40 GALLONS OF WATER PER ACRE APPLIED TO GREEN GRASS AT START OF GROWTH OFFERS RESULTS EQUIVALENT TO FALL TREATMENT. SUMMER SPRAYING OF 4 TO 6 POUNDS IN NOT LESS THAN 40 GALLONS OF WATER PER ACRE INHIBITS GRASS BUT NOT TO THE DEGREE RESULTING FROM EITHER FALL OR SPRING TREAMENT. IF A MOWING IS NECESSARY TO TRIM AN AREA, ONE WEEK SHOULD BE ALLOWED TO ELAPSE BEFORE MOWING IS MADE, FOR ABSORPTION AND TRANSLOCATION OF MH TO ROOTS. RETREATMENT WITHIN THE SAME SEASON CAN BE MADE AFTER THE GROWTH HAS RESUMED. NO MORE THAN TWO APPLICATIONS IN ONE SEASON ARE RECOMMENDED AT THIS STAGE OF DEVELOPMENT. PRESENCE OF BROADLEAVED WEEDS IN PLOTS WILL REQUIRE INCLUSION OF 2, 4-D AS AMINE SALT AT LOCALLY RECOMMENDED DOSAGE.]]></description>
      <pubDate>Mon, 22 Nov 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/104298</guid>
    </item>
    <item>
      <title>PROGRESS REPORT ON USE OF MALEIC HYDRAZIDE FOR GRASS INHIBITION ON HIGHWAY AREAS</title>
      <link>https://trid.trb.org/View/104314</link>
      <description><![CDATA[THE SYNTHESIS OF MALEIC HYDRAZIDE (MH) WAS FIRST REPORTED IN 1895. THE CHEMICAL WAS PREPARED AND ITS UNIQUE GROWTH-INHIBITING PROPERTIES ON GRASSES WERE OBSERVED IN OUR LABORATORIES IN 1949. MH-SPRAYED PLANTS ARE INHIBITED FOR VARYING PERIODS, DEPENDING ON DOSAGE APPLIED AND STAGE OF PLANT DEVELOPMENT AT THE TIME OF TREATMENT. THE EFFECT IS MOST PRONOUNCED WHEN YOUNG, VIGOROUSLY GROWING PLANTW ARE SPRAYED, WHEREAS APPLICATION OF AN EQUIVALENT DOSAGE TO PLANTS APPROACHING MATURITY MAY SHOW LITTLE OR NO RESPONSE. HIGH DOSAGES MAY BE HERBICIDAL. APPLICATION OF 2 OR 4 LB. OF MH PER ACRE IN THE SPRING AT THE START OF THE GROWING SEASON IS SUGGESTED FOR GRASSES IN THE MEDIAN, AND 4 LB. PER ACRE ALONG GUARD RAILS AND ROADSIDES. APPLICATION TO ESPLANADE AND ROADSIDE AREAS AT 4 LB. PER ACRE IS SUGGESTED FOR THE REST OF THE YEAR. /AUTHOR/]]></description>
      <pubDate>Mon, 15 Nov 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/104314</guid>
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