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Walton (W. R.) & Davt>! (J. J.). Cutworms and their Control in 

 Corn and other Cereal Crops. — U.S. Dept. Agric, Washington, D.C., 

 Farmers' Bull. no. 739, 1st June 1916, 3 pp., 1 jBg. [Received 

 3rd October 1916.] 



This paper gives an account of the habits, life-history and methods 

 of control of Lycophotia {Peridroma) margaritosa and other cutworms, 



Gibson (E. H.). The Corn and Cotton Wireworm in its Relation to 

 Cereal and Forage Crops, with Control Measures. — U.S. Dept. 

 Agric, Washington, D.G., Farmers' Bull. no. 733, 9th June 1916, 

 7 pp., 3 figs. [Received 3rd October 1916.] 



The Elaterid, Hoiistonotus nhleri, Horn, causes injury to cotton and 

 maize in North and South Carolina, Illinois, Missouri, Arkansas and 

 Mississippi. In the immature stages it appears to occur only in sandy 

 soils. In addition to maize and cotton, the roots of other plants are 

 attacked by the larvae, including : — Oats, rye, cowpea, Johnson grass, 

 sweet potato, tobacco, water-melon, and a species of wild bamboo. 

 Adults have been observed feeding on stems of cowpeas and leaves of 

 maize and crabgrass. Larval injury results in the production of 

 dwarfed, unhealthy plants. In the case of cotton, the larvae bore into 

 the seed and cause the death of the very young plant. Adults are 

 present from early June until the end of August. Eggs are laid during 

 the end of June and during July in groups of from 3 to 20 in the soil 

 round the roots of the host plants. Hatching takes place in from 

 8 to 11 days. The duration of the larval stage is two or possibly three 

 years. Pupation occurs in the soil in May or June and adults emerge 

 after about 12 days. During the sprmg and summer, larvae are to be 

 found at depths varying from 2 to 18 inches. With the approach of 

 winter they penetrate to deeper levels and in mid-winter occur at 

 depths varying from 4 to 6 feet. During this period feeding practically 

 ceases. Under experimental conditions larvae have been kept alive 

 in moist sand without food for six months. They appear to be suscep- 

 tible to extremes of moisture and drought. The adults fly at night 

 and are capable of migrating several miles. Eggs are only deposited 

 on recently ploughed fields. 



Control measures include (1) early planting of crops, followed by 

 frequent cultivation until the middle of June ; (2) crop rotation with 

 clover, cowpeas, soy beans or grasses which do not require summer 

 cultivation ; (3) manuring infested areas. 



McGregor (E. A,). The Red Spider on Cotton and how to Control it. 



— U.S. Dept. Agric, Washington, D.C.. Farmers' Bull, no, 735, 

 12th June 1916, 12 pp., 10 figs, [Received 3rd October 1916.] 



Injury to cotton by Tetranychus telarius, L,, occurs in the southern 

 parts of the United States. Attacks of this pest result in the dis- 

 coloration and falling of the leaves and sometimes in the death of the 

 plant. Infestation is limited to small areas ; it does not occur con- 

 tinuously over large tracts. In South Carolina the winter is mainlv 

 passed in the mature female stage ; a few males may be present, and 

 during warm periods, eggs may be laid. Feeding takes place on wild 



