. Bulletin. Agriculture; Agriculture -- Arizona. Fig. 15.—Adult tarnished plant bug (natural size and enlarged).. Fig. 14.—Nymph of tarnished plant bug (enlarged nine times). Fig. 16.—Adult cotton square dauber (en- larged about twice). been found in abundance on cotton plants. Evidently they do not find the cotton field a suitable breeding place. Alfalfa fields appear to be the principal source of the adults which invade the cotton fields. In one instance it was estimated that there was an average of one adult square dauber to each square foot of area in an alfalfa field. If all of these inse
. Bulletin. Agriculture; Agriculture -- Arizona. Fig. 15.—Adult tarnished plant bug (natural size and enlarged).. Fig. 14.—Nymph of tarnished plant bug (enlarged nine times). Fig. 16.—Adult cotton square dauber (en- larged about twice). been found in abundance on cotton plants. Evidently they do not find the cotton field a suitable breeding place. Alfalfa fields appear to be the principal source of the adults which invade the cotton fields. In one instance it was estimated that there was an average of one adult square dauber to each square foot of area in an alfalfa field. If all of these insects in a single acre of this alfalfa were dis- tributed in cotton fields so that there would be an average of one per plant there would be more than suf^cient to prevent all setting of bolls in from 6 to 8 acres of cotton. The insects were observed in one instance exceeding 20 per plant on a few rows on one side of a cotton field. An average of one of the bugs per plant is be- lieved by the w^riter to be sufficient to cause maximum damage, and all in excess of this may, therefore, be considered harmless. This. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Arizona. Agricultural Experiment Station. Tucson : Agricultural Experiment Station, University of Arizona
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