Ixxxvi Department of Plant Pathology 



EXTENSION 



The extension work of the Department has been distributed as follows: 

 teaching, demonstration, exhibits, lectures, and correspondence. 



1. Teaching. — During the year 1911— 1912 a course in plant diseases 

 was offered to winter-course students. This consisted of two lectures 

 and two laboratory practices each week. As many of the students were 

 not familiar with plant anatomy, the first four weeks of work was 

 devoted to this subject before entering on the work in plant diseases. 



Lessons on plant diseases were given in extension schools at the fol- 

 lowing places: Wyoming (Wyoming county), Alden (Erie county), 

 Riverhead (Suffolk county), Mountainville (Orange county), Kinder- 

 hook (Columbia county), and Keuka Park (Yates county). At these 

 schools actual laboratory work was given, with microscopes and specimens 

 of diseased plants, and its value was evident from the interest manifested 

 by the students. 



A lesson on hop diseases was presented at the Morrisville School of 

 Agriculture early in the year. 



During Farmers' Week, lectures and practice work were offered and 

 were largely attended. 



Instruction consisting of lectures and practice work on the diseases of 

 ginseng was offered to the visitors at the annual meeting of the New 

 York State Ginseng Growers' Association, held at the College of Agri- 

 culture on April 26 and 27. An exhibit of ginseng diseases was provided. 



2. Demonstration. — Demonstrations have been carried out wherever 

 possible in connection with exhibits. At the meetings of the Fruit 

 Growers' Association and of the Horticultural Society at Rochester during 

 January, a demonstration of spraying, with particular reference to 

 spraying against the wind, was given daily. On the farm trains, at the 

 State Fair, and at the Rochester Exposition, numerous demonstrations 

 were given to show the method of treating oats to prevent smut, and 

 potatoes to prevent scab, and to show methods of cutting out cankers on 

 fruit trees. Demonstration experiments were conducted in apple orchards 

 belonging to H. L. Scribner at Plattsburg, A. G. Fletcher at Keeseville, 

 and E. Lyman Smith at Willsboro. A spraying demonstration v/ith a 

 power sprayer was given at IMr. Scribner's orchard during June. 



Many spraying demonstrations have been conducted in connection Vv^ith 

 the field laboratories. The fellowship men in charge have assisted the 

 growers to a better understanding of the nature of plant diseases, and 

 have not only offered valuable suggestions regarding their control, but 

 have shown the growers how to put these suggestions into operation on 

 their own farms. The extension phase of the field laboratory work has 



