102 CORN AND GRASS. 



moistened. Consequently, manure made from infested fodder, 

 whether Straw, Clover, or other plants, ought not to be 

 carried to fields where crops are to be grown which are liable 

 to attack. Likewise it is desirable to collect and burn the 

 stubble remaining on the ground, in order to destroy in it 

 all the wormlets which may have remained, and also all the 

 TyUncluLS eggs. 



Amongst Corn crops, Oats and Eye are especially subject 

 to attack. Wheat can take it, but as far as we have seen 

 does not suffer much. 



Clover is excessively liable to attack of this Stem-eelworm, 

 and Buckwheat also and Teazels, both wild and cultivated. 



Onions suffer much from the infestation in Holland, but 

 have not yet been reported as injured in this country. 



Various kinds of meadow plants and Grasses are liable to 

 attack, as Daisies, Buttercups, and the Eibwort Plantain ; 

 also the Sweet-scented Vernal Grass, Annual Meadow Grass, 

 and Meadow Soft Grass.* 



Barley appears to be perfectly free from infestation, there- 

 fore is useful in rotation, and the ordinary jBield crops (with 

 the exception of those specified above) appear safe practically, 

 although there may be doubt as to what time may show as to 

 Potatoes, and I have myself infested Turnips by sowing seed 

 on earth in which I had buried Tulip-rooted Oats or Rye. 



Clover after Tulif-root, or Oats after stem-sick Clover, should 

 he most carefully avoided. 



Special applications which have been found most service- 

 able as manure in the preparation of the land, or as dress- 

 ings to bring an infested crop over attack, are sulphate 

 of potash alone, or as a mixture with sulphate of ammonia 

 and phosphates. 



In one special case reported of Tulip-rooted Oats in Mid 

 Lothian, in 1888, a top-dressing of about 1 cwt. per acre of 

 sulphate of potash was given, with the result that the disease 

 disappeared, and an excellent crop was cut. 



Li another instance regarding Tulip-rooted Oats (in fields 

 from which specimens of stem-sick Clover had been sent me 

 in the previous year) the manure applied consisted of phos- 

 phates, ammonia, and potash when sown, at the rate of 

 3 cwt. per acre. This produced a very luxuriant growth, 

 with the exception of a sandy knoll. These knolls are noted 

 as being especially subject to Tulip-root. 



The following detailed note, sent me in the course of 

 experiment carried on for several years with much care, 

 regarding Tulip-root prevention, by Mr. J. Elder, of The 



* For most rcccut list of plants liable to iiifostation, and amount, see 

 woik by Dr. Bitzcma Bos already quoted. 



