AN INTRODUCTION TO THE INSECTICIDE AND FUNGICIDE SECTION 
OF THE KILGORE SEED COMPANY CATALOG 

The extremely rapid development and use of a wide variety 
of new insecticides and fungicides together with the complicated 
chemical names and the numerous trade designations have often 
completely confused the ultimate user. Conditions have reached 
the point, where a grower has the opportunity, or rather the 
task to choose any one of a fairly large number of compounds, 
all of which may be recommended for the particular pest he 
happens to be ‘concerned about. . 
So, far, there is no best insecticide for all purposes, as of 
course the efficiency of a compound, the type of crop,’ the 
stage of growth of the crop, the material application cost per 
acre, weather conditions, the possible toxicity to plants as 
well as to human beings and warm-blooded animals play an 
important role when trying to judge the suitability of any 
compound for any particular purpose. However, thanks to the 
many new insecticidal products now available, it is possible 
to logically select an insecticide, which will best suit the 
grower’s specific problem. 
This page of the catalog is designed to indicate the necessary 
procedure for the accomplishment of this aim as simple as 
possible. 
In the forgoing, it was indicated that a number of factors 
must be considered in order to determine a specific recommen- 
dation. For a practical solution of this task, the following 
table showing the principal influencing factors as well as 
their respective ratings is submitted. 
TABLE OF RATINGS OF FACTORS 
INVOLVED IN THE USE OF 
INSECTICIDAL COMPOUNDS 

CONTROL FACTOR: 
1—Excellent. = 
2—Good. 
3—Fair. 
4—Variable* (From Excellent to Fair). 
* Depending upon weather conditions. 
Note: A + affixed to the numerical rating of a material indicates 
that it is also effective against a wide variety of other insects. 
SAFETY FACTOR: 
1—No toxicity or residue problem involved. 
2—Toxicity or residue problem negliglible. 
3--Toxic to humans and warm-blooded animals, but no residue 
problem involved. 
4—Toxic to humans and warm-blooded animals and possible 
residue problem. 
5—Probably highly toxic to humans and warm-blooded animals 
as well as probable residue problem. 
6—Toxic to cucurbits. 
7—May impart objectionable odor or flavor to edible portions 
of crops, especially potatoes and/or other tuber and root 
crops. 
ECONOMIC FACTOR: 
1—$0.50 to $2.00 per acre. 
2—$2.00 to $3.00 per acre. 
3—$3.00 to $4.00 per acre. 
4—$4.00 to $5.00 per acre. 
5—4$5.00 to $6.00 per acre. 
6—$6.00 to $7.00 per acre. 
7—$7.00 and higher per acre. 
Note: Dust costs calculated at 30 lbs. per acre (single appli- 
cation). Spray costs calculated at 125 gallons per acre 
(single application). 
The foregoing table is intended to be used in connection with 
the insecticidal recommendations for individual insects shown 
on pages 55 to 60. To illustrate the procedure to be followed, let 
us assume that we are troubled with aphids infesting the 
following crops: , 
1—Cucumbers. 
2—Tomatoes—not bearing mature fruit. 
3—Tomatoes—bearing some fruit ready to pick. 
4— Potatoes. 
We will first refer to the Chart “Insecticide and Fungicide 
Recommendations” (pages 52 to 54), and look up the particular 
crop that we are interested in. We will next locate the line 
which lists “Aphids.” The second column refers us to page 59 
of the catalog, where we will find a description of the insect 
as well as numerous recommendations for both dusting and 
spraying purposes. In the case of aphids, seven dust and 
seven spray recommendations are listed. On the right of the 
listings, we find three columns headed up as follows: 
C.F. (Control Factor) 
S.F. (Safety Factor) 
E.F. (Economic Factor) 
In choosing the best insecticide for a particular purpose, all 
of the factors indicated should be scrutinized. The S. F. 
(Safety Factor) should be considered first of all. In examining 
this column we find that any products with a rating of “6” 
are automatically eliminated, as the Table (See page 55) 
shows that materials rated as “6” may prove toxic to cucur- 
bits (cucumbers, squash, melons, etc.). So we would not want 
to use Kilhex Dust 114%, Kilphene-10 Dust, Alltox Wettable 
No. 400, Gamtox Wettable and neither of the DDT Emulsion 
or Wettable. This leaves us with the following: 
Ga. Sut E.F 
Black Leaf 10 Dust 4 3 3 
Kilchlor Dust-5% 2+ 4 5 
Kilgam Dust-1144% 1+ 4, 7 7 
Nicotine Dust-4% Activated 4 3 5 
Rotenone Dust-1% 2 2 4 
Black Leaf 40 4 3 4 
Isotox-Wettable No. 250 ja 4, 7 4 
Synchlor 50-W. 2+ 4 4 
So six of the listed recommendations have been eliminated. 
Now, let’s go a step further. Some of the remaining products 
have a Safety Factor of “4”, indicating that a residue problem 
is involved. However, as cucumbers can be thoroughly washed 
before marketing, it is possible (and in fact it has been 
commercial practice), to use products of that nature until 
a reasonable time before picking. So the logical choice in 
this instance assuming that market prices are favorable, 
would be Kilgam Dust-142% or Isotox Wettable No. 250. 
Incidentally, cucurbits apparently are not affected by the 
odor or flavor of the two materials. 
As the “C.F.” rating of the two materials also shows a plus, 
control of other insects, such as striped or banded cucumber 
beetles and various worms can be expected. Kilchlor Dust-5% 
and Synchlor 50-W would be the next choice. You will note 
that the material cost per acre is lower, while the “C.F.” factor 
is rated at 2+, which again indicates toxicity against other 
insects usually found on cucumbers. If, however, it should 
become necessary to dust or spray during picking time and 
poisonous residue cannot be tolerated, then the nicotine dusts 
or sprays, e.i. Black Leaf-10 Dust, Nicotine-4% Activated Dust 
or Black Leaf 40 should be chosen. All of these materials carry 
a Safety Factor rating of “3”, which means that no residue 
problem is involved, as nicotine on foliage or fruit dissipates 
in a very short time. However, weather conditions must be 
favorable when applying these materials, in order to produce 
complete kills. Other insects infesting cucumbers are little, 
if any, affected by their application. 
50 THE KILGORE SEED COMPANY, Florida’s Leading Seedsmen 


