244 AGRONOMY 



7. Remove some of the ascocarps of lilac mildew from a lilac leaf 

 (they appear to the unaided eye like small black specks) and examine 

 with the microscope. Compare with the fruiting parts of any other 

 mildew you can find. Crush the ascocarps to see ascospores and asci. 

 Make a collection of mildewed leaves. The fruiting bodies, or ascocarps, 

 are likely to be mature in late summer. 



8. Make a collection of the fungi that grow on wood. 



9. Visit museums for other kinds of fungi. 



10. Make a collection of the different ingredients used in making 

 insect sprays. 



11. Make up standard solutions of the various sprays and use in the 

 garden. If no plants there need spraying, spray those that are most 

 likely to need it. 



12. Visit a hardware or implement store and study the various forms 

 of sprayers in stock. 



References 



Bailey, "Manual of Gardening." 



Duggar, " Fungous Diseases of Plants." 



Stevens and Hall, " Diseases of Economic Plants." 



Farmers' Bulletins 



75. The Grain Smuts. 



146. Insecticides and Fungicides. 



227. Lime-Sulphur-Salt Wash. 



231. Spraying for Cucumber and Melon Wilt. 



243. Fungicides. 



259. Disease-Resistant Crops. 



Bureau of Plant Industry 



17. Some Diseases of the Cowpea. 



76. Copper as an Insecticide. 



171. Some Fungous Diseases of Economic Importance. 



