94 STEM EELWORMS. 
about ten inches in length; another only four; whilst a Bean plant 
sent accompanying showing the natural length was over three feet 
and a half. 
Onions are also (see my ‘ Twentieth Annual Report’ for details 
and figures) subject to attack, and lists of other crops which are to 
some degree liable to infestation, as well as weeds and grasses which 
serve as food-plants to keep the Eelworms alive in absence of the field 
crops which they will (if circumstances permit) presently transfer 
themselves to, will be found in my papers previously referred to, as 
well as detailed observations regarding applications which have proved 
trustworthily serviceable for use to ground before sowing, or, remedially, 
to check attack and push on growth. 
The following notes are just given merely shortly from the abstract 
published in my leaflet on Stem Eelworms, of which I should be happy 
to send copies free to any applicant; and I should like particularly to 
draw attention to the circumstance that, whilst marked success has 
attended use of sulphate of potash and some other sulphates named, 
nitrate of soda has failed, so far as report to myself shows, in producing 
satisfactory results. 
Special applications, which have been found most serviceable for 
Clover and Oats, whether as preventives, as manure in the preparation 
of the land, or as dressings to bring a crop over attack, are sulphate of 
potash alone, as a mixture with sulphate of ammonia, or both of these 
with phosphates. 
Sulphate of potash at the rate of 1 cwt. per acre has had a good 
effect in stopping the disease and bringing a good crop;—also at the 
rate of about 4 cwt. per acre it has done well. 
As a manurial application, a mixture of about two parts sulphate 
of potash, three parts sulphate of ammonia, and four parts of phos- 
phates, brought remarkably healthy plants, with few exceptions. 
A recipe found.to answer well in case of attack in ‘‘ Tulip-rooted 
Oats” or ‘* Stem-sick Clover’ is—sulphate of ammonia four parts, 
sulphate of potash one part, and steamed bones two parts; this at the 
rate of 14 cwt. per acre, followed up by a dressing of 2 cwt. per acre 
of sulphate of ammonia. 
The following note of experiment in treatment of Clover-sickness 
at Rothamsted, which I was kindly permitted to use, showed entirely 
satisfactory results:—‘‘ A mixture of sulphate of potash 3 cwt., and 
sulphate of ammonia 1 cwt. per acre, was applied on April 8rd.” The 
disease ceased, and the Clover made a very vigorous growth, which 
was continued markedly in the second crop. Sulphate of iron at the 
rate of 2 cwt. also answered very well both for stopping the disease 
and giving good growth; at the rate of 1 cwt. the sulphate of iron was 
not so serviceable. 
