An investigation was carried out on the important fungal diseases of turf grass -- mainly Zoysia spp. -- at 12 golf course of Okayama, Hiroshima, Yamaguchi, Fukuoka, Kumamoto and Ooita prefectures from August 1971 to April 1973.
As a result of this experiment the most frequently detected fungus was Curvularia spp., and this fungus gave a serious damage to Zoysia materella (L.) MERR. and Zoysia japonica STEUD., the secondly detected fungus was Helminthosporium spp., the third was Fusarium spp., and Pythium spp. followed it. Two types of fairy rings were recognized, the one was Lycoperdon perlatum PERS. which showed the green rings on the Zoysia spp., and the other was Lepista subnuda HONGO which showed the green and necrotic rings on the Zoysia spp. and the Tifgreen.

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Seeding in slope will be used more frequently in future. But, the growth of turf is not always satisfactory after construction. For instance, since the soil of cut slope has few or no manurial ingredients, the growth becomes worse.
The purpose of this paper is to investigate the effects of fertilizer's forms as a basic study of fertilizing to the turf cover in slope. The above investigation has disclosed the following features;
1) The growth of turf became better at all fertilized applications.
2) Among the forms of fertilizer, according to the growth at first, they were arraged as follow;
granule≥liquid>stick
But, most of granular and liquid fetilizers were washed away.
3) Fertilizer of stick did not take remarkable effect at first, but, it is expected later for a long time.
4) Among the densities of liquid, the growth of turf became worse at 1.0 percent application, so it is desirable to fertilize by less than 0.5 percent.

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[in Japanese]

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