Vol. 15â1961 - NorthEastern Weed Science Society
Vol. 15â1961 - NorthEastern Weed Science Society Vol. 15â1961 - NorthEastern Weed Science Society
In the Niagara 5996 tJ:'eated plots, little or na:"damagewas observed in all petunias except those which were planted I, 2 and 4 days after treatment in plots treated at 4 pounds per acre. Even these plants showed only a very slight amount of damage. The petunias planted in plots treated with EP-16l showed no damage regardless of time of plan,ting. The plots which we~e treated with EPTCat 5, 10 and 20 pounds per acre and Niagara 5996 a~, 4 pounds per acre gave the best weed control and also the best petunia growth. The petunias which were growing in beavily weeded plots showed signs of severe stunting later in the summer. SU'I1II1'tary Five pre-plant herbicides were applied at t1u:ee concentrations. Petunia plants were ~ransplanted to the treated plots one day. two days. four days. one week, two weeks, three weeks and four weeks after t~eatment. It was found that petunia plants could be safely transplanted in some treated 80i1sone day after application. In others at least one week delay was necessary. Effective weed control with either no or negligible damage to the transplanted petunias were found in plots treated with EPTCat 5, 10 and 20 pounds per acr~ and with Niagara 5996 at 4 pounds per acre.
- 135. Dim tro for Weed Control in Gladiolus Arthur :Bing* Weed control investigations on gladiolus have been in progress for several years on Long Island and the results have been reported to this conference (1, 2, 3). Diuron gives long lasting weed control and suppresses or eliminates a wide variety of weeds. However, Diuron may slightly del8\Y blooming or reduce cut nower yield (3). Simazine also ma.y adversely affect cut flower yield (3). Diuron and Simazine usually give good weed control on stock grown for corms without reducing corm yield. CIPC gives good temporary control of weeds other than the resistant Jweeds such as galinsoga, ragweed, or perennial grasses. Liquid Dinitro has proved to be an effective pre emergence herbicide at ra.tes of 4-12 pounds actual DliBPper acre. It can be used on emerged weeds but should be kept off of gladiolus foliage. The past two seasons a series of tests were made to determine how safe the DNBPapplications are to gladiblus. Also a test was carried out to evaluate the feasibility of a second application of granular DNBPto gladiolus in spiking or prespiking stage. Results in 1959 (3) showed that the application of liquid DliBPat 4,8, and 12 pounds actual DNBPin 100 gallons of water per acre did not reduce corm yield of variety Friendship in numbers or weight compared to hand weeded cultivated plots. There was a slight del8\Y in flowering but no loss in cut flowers as measured by numbers or weight of flowers cut. The 1959 corms from each treatment were planted in the same plot areas in 1960and received the same treatments. Flowering again was not adversely affected by the treatment. On June 14, 1960a half acre of gladiolus was planted as part of a virus transmission study. After the small corms were set in the furrows, the corms were covered by running a tractor cultivator over the rows. Immediately after covering, the half acre was spr8\Yed with one gallon of DNBP (3 pounds per gallon) in 18 gallons of water. This kept the field free of weeds for about 5 weeks. After 7 weeks the field was cultivated and the rows hand weeded where necessary. Only a few weeds were present. In a few days as spikes began to emerge the rows were treated With a 2 foot wide band of 10~ granular DNBPat 6 pounds DNBPper acre. Flowering was normal in early September. In late October a good crop of corms was dug. trleed control in the rows was good -.until the time of digging_ The suggested treatment is liquid emergence followed by cultivation at of granular DliBPat 4-6 pounds actual the per DNBPat 6-8 pounds per acre pre-spike stage and then an before application acre; * Cornell Ornamentals Research Laboratory, Farmingdale, Long Island, New York
- Page 83 and 84: ( ( ( Table 5 Effect of Lay-By Herb
- Page 85 and 86: Chemical Weed Control Charles J. No
- Page 87 and 88: Table I. Weed control, plant stand,
- Page 89 and 90: Table 1 - Table Beets Pre-plant; Pr
- Page 91 and 92: 91. Chemical Weed Control in Onions
- Page 93 and 94: 93. Table I. l;ced control, plant s
- Page 95 and 96: 95. Results Survey Table I of Hando
- Page 97 and 98: 97. Weed counts were made 3 weeks a
- Page 99 and 100: 99. Third applications were made on
- Page 101 and 102: 1t1. ~ata - Onion stand counts, wee
- Page 103 and 104: The data in table 2 gives the signi
- Page 105 and 106: The following effects were noted. 1
- Page 107 and 108: PRE-fREATINGSOILS, APOSSIBLE.TECfiN
- Page 109 and 110: · 109. Table 2. The influence of d
- Page 111 and 112: ..... 11 ... - Progress Report on W
- Page 113 and 114: 113. fndothal as a pre-planting inc
- Page 115 and 116: 115~ Table 3. Mean markebab l.e 9£
- Page 117 and 118: 1170 Chemical Weed Control Charles
- Page 119 and 120: 119. Table I .. Weed contrOl! plant
- Page 121 and 122: 121. '- The stand of plants of bo
- Page 123 and 124: 123. Table II. Weed control stand a
- Page 125 and 126: EFFECTOF SEVERALHERBICIDESONEARLYYI
- Page 127 and 128: Table 2. Calcula.ted ecre yields of
- Page 129 and 130: 129. - Treatment Average weight per
- Page 131 and 132: -- The herbicides were applied on J
- Page 133: 133. Table 2. Effect of pre-plant h
- Page 137 and 138: PJ,OORESSREPORT:ON.:WEEJhCGNTROL IN
- Page 139 and 140: - Simazine 2 and 2 1/2 lb./A and at
- Page 141 and 142: 141. Results - .l2.22 Table 2 shows
- Page 143 and 144: - !!!! Applications 143. The plots
- Page 145 and 146: 145. Conclusions ADexperiment carri
- Page 147 and 148: 147. Residual herbicide activity wa
- Page 149 and 150: - Table 1. Herbicides and Rates Use
- Page 151 and 152: ~ __ ( ( ( Table 3. WeedControl on
- Page 153 and 154: 153. TreatiD§ Established Hemlock
- Page 155 and 156: 155. flowering and growth in the sp
- Page 157 and 158: 157. Table 2. Pansy Weed Control (P
- Page 159 and 160: 1590 Table 3. Herbicides Used on Tu
- Page 161 and 162: ------- -------------_._------ ..
- Page 163 and 164: '. 163. In .Table 3 Co.mpariS01'U$
- Page 165 and 166: 1.65. "'-" Ia.!!l.! ! __!ind_a!!,d_
- Page 167 and 168: 167. Maleic Hydrazide for Weed Cont
- Page 169 and 170: 169. 1. Dana, M. N. Sensitive Fern
- Page 171 and 172: 171. -' Table 1. Amino triazole res
- Page 173 and 174: 1730 Additiona! apple .,samples wer
- Page 175 and 176: more consistently effective than 5
- Page 177 and 178: 177. HUBICIDES roll YOUNGAPPLE TUES
- Page 179 and 180: --. Table I. Treatments No. Materia
- Page 181 and 182: Table 1 -Effect of Granular Formula
- Page 183 and 184: iss. BVAWATIONor rIVE HEIBICIDES 10
In the Niagara 5996 tJ:'eated plots, little or na:"damagewas observed<br />
in all petunias except those which were planted I, 2 and 4 days after treatment<br />
in plots treated at 4 pounds per acre. Even these plants showed only<br />
a very slight amount of damage.<br />
The petunias planted in plots treated with EP-16l showed no damage<br />
regardless of time of plan,ting.<br />
The plots which we~e treated with EPTCat 5, 10 and 20 pounds per acre<br />
and Niagara 5996 a~, 4 pounds per acre gave the best weed control and also<br />
the best petunia growth. The petunias which were growing in beavily weeded<br />
plots showed signs of severe stunting later in the summer.<br />
SU'I1II1'tary<br />
Five pre-plant herbicides were applied at t1u:ee concentrations. Petunia<br />
plants were ~ransplanted to the treated plots one day. two days. four days.<br />
one week, two weeks, three weeks and four weeks after t~eatment.<br />
It was found that petunia plants could be safely transplanted in<br />
some treated 80i1sone day after application. In others at least one week<br />
delay was necessary.<br />
Effective weed control with either no or negligible damage to the<br />
transplanted petunias were found in plots treated with EPTCat 5, 10 and<br />
20 pounds per acr~ and with Niagara 5996 at 4 pounds per acre.<br />
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