Vol. 15—1961 - NorthEastern Weed Science Society

PROMISINGNEWCHEMICALSFORWEEDCONTROL
Stanford N. Fert1S !t
INTRODUCTION:
The development of promising new compounds for weed control and new uses
for many of the older ones continued at a rapid pace during 1960. The greater
selectivity to crops, the results on previously resistant weed species, changes
in application techniques, combinations of' herbicides for more effective results
and even stimulation of crop growth over that expected from the removal of weed
competition made 1960 an exciting year. Also to be recalled are the surprises,
the compounds to which we pinned great hopes in 1959 but which failed this
year. There is no doubt but what "MotherNature tl with all her variables of
temperatures, rainfall, humidity, soil type, seed germination, etc., will continue
to exercise a degree of skepticism on our Judgment of what looks good
and/or bad.
The following is an attempt to summarize some of the more promising developments
for the 1960 growins season.
Granulars
and Combinations
- New and promising developments continue in the areas of aquatic weed
control, vegetable and nursery crops, brush control and air application, particularly
with respect to sranular compounds. With improvements in eqUipment
and formulation, increased usage can be au:ticipated. .
Combinations of herbicides. show increased effectiveness over the use ·.of
a s iugle compound for the control of a number of perennial weed problems. Some
of these wll1 be discussed later in this ~aper. Others, includillg CIPC plus
Randox, dalapon plus Dinitro and 4(2,4-00) plus dalapon have been covered by
previous reports.
NEWCHEMICALS WITHPROMISINGUSES:
Amiben
The liquid amine fo:r:mulation as a pre -emergence treatment looks very
promil!ling for aDllual broad-leaved and annual grass control a.t :5 to 4 pounds
per acre on carrots, black-eyed peas" lima beans, pumpkin, snap beans and
soybeans. At rates of 2 pounds per acre favorable results have been obtained
on cucumbers. The weed control was excellent, as· was the stand of plants,
weight of plants, numbers and we:1gbt of fruits.
The granular formulation has looked promising on crucifers, peppers, sweet
potatoes, tomatoes and ornamentals I at rates of :5 to 8 pounds per acre.
y Professor ot Agronomy, Cornell Univere ity I Ithaca, NewYork.