208 



Sherman (F.). Report of Division of Entomology. — 40th Ann. Rept. 



North Carolina Agric. Expt. Sta. for Year ended 30th June 1917 ^ 



[Raleigh] [n.d.j, pp. 64-66. [Received 18th March 1919.] 



Peach spraying experiments during the years 1914-15 showed that 



commercial lime-sulphur at the rate of 1 gal. to 49 gals, water with 



lead arsenate added, when persistently used as a summer spray, resulted 



in final injury to the trees, though this was not evident during the 



first year, and though it gave a better colour to the fridt than the 



standard self-boiled lime-sulphur with arsenate. The use of soap as 



a spreader, or of flour-paste as an adhesive, did not appear to render 



the lead arsenate more effective against the peach curculio [Conotra- 



chelus nenuphar], the injury due to which, based on the counts of 



prematurely dropping fruit, was greater near woodlands. 



Metcalp (Z. p.). Report of Entomologist. — 40th Ann. Rept. North 



Carolina Agric. Expt. Sta. for Year ended 30th June 1917, [Raleigh] 



[n.d.], p. 67. [Received 18th March 1919.] 



Since reporting on experiments with lime for the control of Bruchus 



spp. (cow-pea weevils) [see this Review, Ser. A, v, p. 208], further 



experiments on a large scale have shown that where cowpeas are 



stored in large amounts, the lime may simply be spread in a layer 



on top of the peas and still accomplish the same result. 



Ehehorn (E. M.). Division of Plant Inspection. — Hawaiian Forester 

 & Agriculturist, Honolulu, xvi, no. 1, January 1919, pp. 13-14. 

 A nest of an ant, Monomorium pharaonis, was intercepted during 

 December on sealing-wax palms from Java ; the same species and 

 a scale-insect were found on orchids from the same country. 

 Pots of Thuya orientalis from Japan were fumigated owing to the 

 presence of larvae of a Curculionid beetle. Acorns from Japan were 

 also found to be infested with weevils. 



Fryer (J. C. F.). Mustard-growing as a Preventive of Wire worm. 



— Gardeners^ Chronicle, London, Ixv, no. 1676, 8th February 

 1919, p. 64. 

 A mustard crop, grown for the purpose of treating land infested 

 with wireworms. may be dealt with in three ways. It may be sown 

 in April and May as a seed crop and will occupy the ground for the 

 whole summer ; it may be ploughed in green, usually when about 

 18 ins. to 2 ft. in height ; it may be eaten off by sheep. In the last 

 two cases it is usually sown in late summer, after a fallow or the har- 

 vesting of an early crop, the manurial effect being considerable in 

 both cases. Mustard is seldom attacked by wdreworms, but w^hen 

 these have absolutely no other food they can for a time eat mustard 

 though they cannot thrive on it, and if there is little else growing 

 on the land during the summer they gradually die out. When the 

 crop is ploughed in, it would almost appear that the plant on decom- 

 position releases some substance definitely injurious to wireworms. 

 When mustard is to be used as a preventive treatment for wireworm, 

 probably the best method is to sow it as a first crop, preferably for 

 seed, in which case it will certainly prevent trouble from such " annual " 

 pests as leather- jackets [Tipula], 



