Spraying Bindweed 
Some places it is impossible to irrigate or culti- 
vate so I have experimented with weed spray or 
2-4-D. I find that I can get about 95% kill when 
the ground is dry and the weather 80 to 90 degrees, 
but there are always a few left and there are a few 
seeds that sprout. This method is a good control 
measure when others are impossible. Sodium chlor- 
ate can make a perfect kill but it makes the ground 
barren for from three to five years. 
Experiments on Tomatoes 
In the year 1939 I planted about twenty varieties 
of tomatoes. I grew them under natural rainfall 
conditions. The Earliana was the poorest of the 
twenty varieties. The three best were Rutgers, 
Bonny Best, and Marglobe. 
About 1944 I tested the three best varieties and 
the Earliana again under irrigation. The results 
under those conditions were different; the Earliana 
being the heaviest yielder by a shade. Under in- 
tensive irrigation, I believe it would have yielded 
much more. 
Manure 
In its broadest sense, manure is any substance 
applied to the soil to increase its productivity. 
Trash and weeds contain humus of doubtful 
value. If ground is deficient in lime and phosphoric 
acid or other elements, they cannot be restored by 
plowing under manure that does not contain them. 
Manure from livestock that eat nothing but straw 
or corn stalks is very low in value as fertilizer. 
Manure from animals fed grain is more valuable; 
while manure from animals that are fed balanced 
rations is very valuable. 
Ground rich in humus is harmed when heavily 
manured except under irrigation. Irrigated ground 
responds to great quantities of manure. 
Nitrogen has often been beneficial in irrigated 
ground at the rate of 100 to 120 pounds per acre 
while other ground may show injury at above 20 
pounds to the acre except in wet weather. 
Users of nitrogen often waste it by using too 
much in dry weather or on small plants. Large 
plants or heavy feeders like celery will respond to 
light feeding of nitrogen every two weeks when the 
plants have reached fair size. 
Phosphoric acid is slow acting but helps root 
growth and helps produce well developed flowers and 
