Abstract
MUCH recent research into the incidence and overwintering of the potato blight fungus (Phytophihora infestans) has made it necessary for the Ministry of Agriculture to revise its leaflet upon this subject. The new Advisory Leaflet, No. 271, shows that the fungus overwinters upon infected tubers, and there are usually sufficient of these left from previous crops, or thrown out from storage pits, to begin fresh infection in the spring. Control by spraying and dusting is described, and other methods include the removal and destruction of haulm before digging the crop, and the disposal of blighted tubers. Advisory Leaflet Np. 273 replaces leaflet No. 195, and deals ttith American gooseberry mildew (Sphceroiheca mors-uvi). The subject-matter has been brought up to date. A short Advisory Leaflet (No. 182) deals with spurrey (Spergula arvensis) as an agricultural weed. Spraying with 5 per cent solution of copper sulphate, or 7-10 per cent sulphuric acid, are recommended for control of the weed amongst cereal crops, in addition to the application of lime, and other methods.
Article PDF
Rights and permissions
About this article
Cite this article
Agricultural and Horticultural Pests. Nature 138, 755 (1936). https://doi.org/10.1038/138755a0
Issue Date:
DOI: https://doi.org/10.1038/138755a0