Vol. 16—1962 - NorthEastern Weed Science Society

DISCUSSIONOF RESULTS
Transplant Tomatoes. Experiment No.1. 1960
The chemical tre.attnents in this trial were five in
number. and consisted of the following:
a. Solan at rate of 2.0 pounds/acre;
4 applications at two week intervals.
b. Solan at rate of 4.0 pounds/acre;
2 applications one week apart.
c. Solan at rates of 2.0. 4.0. and 6.0 pounds/acre;
single applications.
Both grasses and broadleaved weed species were less
than one inch high when the first treatment was made on June 21.
Weed species represented Were pi~weed (Amaranthus retroflexus).
lambsquarters (Chenopodium album), buckhorn plantain (Plantago
lanceolata), barnyard grass (Echinochloa crusgalli), and yellow
foxtail (Setaria lutescens). None of the plots was cultivated.
1.3.3
Data on weed control were taken at three intervals
throughout the season. The final counts just prior to harvest
are reported in Table 1. The most effective treatment was tw.o
applications of Solan (4 pound/acre rate) made at 7 day intervals.
There was an appreciable reduction in weed population following
all single treatments, but in view of the size reached by the
surviving weeds, these data may be misleading. Thus, in the case
of the 2 pound rate, the escapes developed to such large size as
to interfere with growth and yields of crop plants. At both the
4 and 6 pound rate the escape weeds were considerably reduced in
s:'ze.
The total number and pounds of tomatoes produced for
the entire season for each treatment are reported in Table 2. No
significant difference was noted in the number of tomatoes
produced following any of the 5 control programs and the cultivated
check.
Although the untreated check was not included in the
analyses of data, it 1s obvious that all treatments had significantly
more fruit than the check.
Considering the total number of pounds of tomatoes for
the season, the treatment receiving a single application of 2
pounds of Solan per acre yielded significantly less than the
cultivated check in the case of Fireball. This was interpreted
to be the result of weed competition.
Transplant Tomatoes, Experiment No.2, 1961
A test was implemented in 1961 with the purpose of
-" ".3 __ L...! -.._Of "" L'I . .. _c _ _L ~ _