300 



Duncan (F. M.). Insect Pests and Plant Diseases in the Vegetable 

 and Fruit Garden. — London, Constable and Co., Ltd.. 1919, 

 95 pp., 12 plates. Price 3s. 6f/. [Received 16th June 1920.] 



This book gives a short and popular account of those insect pests 

 and plant diseases that are most likely to be met with in allotment 

 or vegetable gardens together with such methods of control as could 

 be easily applied by the owner of a small garden. Only the commoner 

 British insects and fungi are included. 



HuLBERT (H. W.). Field Pea Production in North Idaho.— f/?(iv. 

 Idaho Agric. Exp. Sta., Moscoiv, Bull. 115, March 1919, 26 pp., 

 3 figs. 



The pests mentioned as attacking field peas are Bruchus pisonim 

 (pea weevil), AcyrtJiosiphon {Necfarophora) pisi destructor (pea aphis) 

 and Cydia (Setnasia) nigricana (pea moth). The damage caused by 

 these pests and the remedial measures for them are discussed. 



Webb (J. L.). How Insects affect the Rice Crop. — U. S. Dept. Agric, 

 Washington, D. C, Farmers' Bull. 1086, March 1920, 11 pp., 4 figs. 



The rice water weevil, Lissorhoptrus simplex, Say, occurs annually 

 in the rice-fields, attacking the roots. In extreme cases the plants are 

 killed. The adults hibernate in dead grass, the dates of their first 

 appearance in the spring varying from 25th March to 26th June. The 

 eggs are inserted into one of the principal roots. The larvae hatch in 

 a few days and commence feeding on the inner root tissues. One larva 

 may attack several roots. The duration of the pupal stage is probably 

 from 1 to 2 weeks, the total life-cycle occupying about 38 days. For 

 the control of this pest the fields should be drained while the larvae are 

 still young about 2| to 3 wrecks after the first flooding. The drainage 

 should continue for 2 weeks. A longer period will injure the rice, but 

 a shorter period will not kill the larvae. Other pests of rice include 

 the stink bug, Solubea (Oebalus) pugnax, F. ; Laphygma frugiperda, 

 S. & A. ; Chilo plejadellus, Zinck. ; Diabrotica duodecinipunctata, 01.. 

 and Ligyrus rugiceps, Lee. 



The methods advocated for controlling insect pests of rice include 

 the ploughing of fields in the autumn previous to planting time. If 

 this is not done, all vegetation should be burned off during the winter. 

 Fields should be drained after first flooding. In case of attacks by 

 caterpillars they should be flooded at once, and no weeds should be 

 permitted in their neighbourhood. 



Weiss (H. B.). Miscellaneous Nursery Insects. — ]^eiv Jersey State 

 Deft. Agric., Trenton, Cu-c. no. 31, March 1920, 21 pp., 17 figs. 



This circular deals briefly with the life-history of, and remedial 

 measures for the following insects pests: — GryUotalpagryllotalpa,\j.,. 

 (European mole -cricket), Idiocerus scurra, Ger. (poplar leaf-hopper), 

 Macropsis virescens var. graminea, F. (poplar stem leaf -hopper), Platy- 

 metopius hyalinus, Osb. (Japanese maple leaf-hopper), Brachys ovatus, 



