6 4 



Importation Regulations. [april, 



and 7 cwt. of straw with 14 tons. Superphosphate 3 cwt., and nitrate 

 of soda i| cwt., supplying 26 lb. of nitrogen, gave an average gain 

 during four years of nearly 12 bushels of grain and 8 cwt. of straw; 

 2 cwt. of nitrate of soda did slightly better. In all the comparable 

 series nitrate of soda gave rather better results than sulphate of 

 ammonia containing the same quantity of nitrogen, viz., to 2^ 

 bushels more grain, and 2 or 3 cwt. more straw. 



Since 189 1 the plots have been cropped irregularly, but nearly 

 every year the manures applied to the different plots have been the 

 same as those applied in the beginning, and in future the plots are 

 again to be brought under exact experimental conditions. 



Summary of Foreign Experiments. 



Use of Sulphur as a remedy for Potato Scab {Deutsche Landw. 

 Presse, 5 March, 1910.) — An experiment is being conducted at the 

 Horticultural and Viticultural Institute, Ahrweiler, on the use of sulphur 

 as a remedy for potato scab, with very favourable results. It was 

 found that the proportion of diseased potatoes obtained from a plot 

 treated with sulphur, at the rate of 356 lb. of flowers of sulphur to an 

 acre, was much less than in the case of an untreated plot. The addition 

 of potash to the sulphur, in the proportion of 178 lb. of 40 per cent, 

 potash to an acre, gave even better results. It was also observed that 

 the soil of the plot so treated was looser, freer from weeds, and gave 

 a larger yield of potatoes. 



An experiment with artificial manures was combined with the 

 preceding experiment and the addition of superphosphate, nitrate of 

 soda, and potash to the sulphur-treated plots was found to give a 

 greatly increased yield over plots which were neither manured nor 

 treated with sulphur or which were manured only, or treated with 

 sulphur only. 



The experiment is not yet concluded, but observations taken during 

 1909 suggest that the application of sulphur produces a physical 

 improvement in the soil, and has a very favourable effect upon the 

 availability of the plant-food both in the soil and in the artificial manures. 



IMPORTATION REGULATIONS. 



Importation of Potatoes into Ireland. — The Department of Agri- 

 culture for Ireland have issued an order, dated February 15th, 1910, 

 prohibiting the landing in Ireland of any potatoes brought from the 

 Continent of Europe. 



Proposed Prohibition of Importation of Potatoes into Sweden. — 

 The Board of Agriculture are informed that, in order to prevent the 

 introduction of potato disease into Sweden, the Swedish Board of 

 Agriculture have recommended the total prohibition of the importation 

 of potatoes into that country. 



Importation of Bees and Honey into Lourengo Marques. — The Board 

 of Trade are in receipt, through the Foreign Office, of copies of Regu- 

 lations recently issued prohibiting the importation of bees into the 

 district of Lourengo Marques without a special permit (to be obtained 

 from the Entomological Section of the Department of Agriculture), 

 and entirely prohibiting the importation of honey, either in the comb 

 or extracted and bottled, from countries other than South Africa. — 

 (Board of Trade Journal, March 3rd, 1910.) 



