273 



Reports on the State of the Crops in each Province of Spain. — Bol 



Agric. Tecnica y Economica, Madrid, x, no. Ill, March 1918, 

 pp. 2-17-265. 



In the Province of Badajoz a spring campaign is being organised 

 against locusts, and, as large areas remained untreated in the winter, 

 it is considered that the measures ordered by the local councils are 

 insufficient and additional help has been sought from the State in 

 order to avoid unnecessary losses to crops. The same conditions 

 prevail in Caceres, while a great abundance of locust eggs, some of 

 which are already hatching, is reported from Cordoba. 



Mazieres (A. de). Enquete sur L'Eudemis. [Investigation regarding 

 Polychrosis bofrana.] — Rev. Horlic. de VAlgerie, Algiers, xxii, 

 no. 3, March 1918, pp. 35-39. 



The history is given of the infestations of Polychrosis hotrana that 

 have occurred in Algeria since 1904, when the pest was introduced. 

 The various methods of control that have been tried for this vine- 

 moth and for Clysia anibigueUa are reviewed. The results have shown 

 that, as soon as the presence of the moths or of young larvae is observed, 

 the most efficacious way of protecting the vine is by spraying the fruit 

 with some substance that will repel oviposition and poison the larvae. 

 This includes two treatments, namely, two sprayings in spring with 

 arsenicals and a summer treatment with nicotine. Lead arsenate mixed 

 ^nth Bordeaux solution is given in two applications at 8 to 15 days' 

 interval ; summer treatment begins as soon as the grapes begin to 

 develop ; for this, nicotine should be mixed with a copper solution. 

 For the last few years the majority of vine-growers have gathered 

 infested grapes before maturity in order to destroy the larvae embedded 

 in the pulp ; this naturally reduces the quantity of the crop. It has 

 been noticed that the flights of moths are always more abundant 

 around farm buildings, where they seem to be attracted either by the 

 shelter afforded from strong winds or by lights. For this reason 

 light and bait traps placed in the vicinity of such buildings collect 

 more individuals than those placed elsewhere. 



Several causes are suggested for the lack of success in spraying 

 recorded by ^^ne-growers. These include faulty preparation of the 

 spraying mixtures, economy in the use of sprays, and their bad distri- 

 bution. Those who are in the habit of treating vines for mildew tend 

 to spray the young leaves only and forget to sprinkle the future grapes. 

 Applications against the first generation are often left too late, thus 

 allo\%"ing future generations to occur. Acetates are mixed with copper 

 solutions of var}'ing powers of spreading. Preliminary defoHation, 

 which allows the operator to reach the fruit more easily, is frecjuently 

 omitted. The insecticides are sometimes washed away by rain just 

 as the larvae are hatching. 



DiCKERSON (E. L.) & Weiss (H. B.). Corythucha spinulosa, Gibson, a 

 New Lace-bug on Wild Cherry (Hem. Horn.). — Entom. News, 

 Philadelphia, Pa., xxix, no. 4, April 1918, pp. 121-125, 1 plate. 



Up to the present Corythuca spimdosa, the food-plant of which is 

 wild cherry {Prunus serotina), has been found only at one place in 

 (C479) Wt.P2/137. 1,500. 7.18. B. &F.Ltd. Gp.tl/3. a 



