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Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society

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346<br />

1.<br />

2.<br />

4.<br />

5.<br />

6.<br />

8.<br />

SUMMARY<br />

A study was conducted to evaluate the effect of several forms<br />

of attapulgite as a carrier of 2.4-D.<br />

In this study the 30/60 size gave better control with the LVM<br />

granular than with the RVMgranular.<br />

The 24/48 and 20/35 si~es appeared to be affected very little<br />

by type of particle breakdown.<br />

All granular sizes gave comparable weed control when the three<br />

pound rate was conslde~ed.<br />

The 24/48 particle size resulted in a higher degree of weed<br />

control than the 20/35 size at the lower rate of herbicidal<br />

application.<br />

The 10 per cent concentration granular produced better control<br />

than the 20 per oent concentration granular at the lower<br />

rate.<br />

There was a slight trend towards higher yields with the 24/48<br />

size at the l~pound rate.<br />

The somewhat greater weed control and lower corn injury obtained<br />

with the liquid formulations were not significantly<br />

different from those obtained with granular formulations.<br />

ACKNOWLEDGEMENT<br />

The authors would like to acknowledge Dr. R. J. Marrese of<br />

Diamond Alkali Co. Cleveland. Ohio. for his assistance in preparing<br />

and supplying the herbicides for this study.

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