Mycological NoteSi— Y 



By liVRON D. Hai.stkd 



The notes for the present issue have this in common that they 

 are all derived from the results obtained at the Experiment Area 



J 



This test field, sometimes 



called the '' Plant Hospital,'^ consists of two acres laid off into 

 six scries, each with four plots and the latter are all divided into 

 six equal parts 1 1 by 33 feet and called belts. These belts are 

 usually the unit of area for any variation in the method of treat- 

 ment for the crop in the plot. 



Nearly all the vegetable and vegetable-fruit crops are grown, 

 some one or more fungi infesting each being under consideration- 

 In some instances the treatment is entirely with the soil, as for 

 club-root of turnip, or scab of the round potato, but hi the major- 

 ity of cases it is by means of various fungicides applied to the 

 aerial portions of the plant, as in the spraying of beets for leaf 

 blight {Cercospora bcticola Sacc.) or beans for the pod spot {Col- 

 IctotricluDH lagcnaniin Pass.). 



The present season closed the fifth year in the existence of 



these exper 



all that time some crops 



have been grown continuously upon the same land. The w^ork 

 with the turnip club-root {PlasniodiopJwra Brassicae W or.) is a 

 good nistance of this latter fact and may well serve as the first note 



to be recorded. 



Lime for the Club-root of Tunnps. — Experiments with lime as a 

 remedy for the club-root, due to the subterranean Myxoviycete, 

 above named, have been carried out upon one plot, one-twentieth 

 of an acre, and divided into six equal belts. Lime, air slaked, was 

 used upon three of the belts, namely numbers i, 3 and 5, and at 

 the rate of 150, 75 and 37 ^^ bushels per acre respectively, applied 

 April 24, 1894, to the surface of the ground already prepared for 

 sow^ing, and thoroughly raked in. Belt number 6 received cor- 

 rosive sublimate and its consideration wall be omitted at this time. 



The followhig table gives the yield of turnips in terms of 

 pounds, and sound and clubbed roots for each of the past five 

 years, no additional lime having been applied during that time, 



(72) 



