Journal of Agjicultiire. 



[lo Nov., ig^o^. 



are required on such a soil. The 1908-9 plot at Mr. Gooch"s farm was 

 on a chocolate soil on a hillside. A minimum and a maximum dressing of 

 phosphoric acid was supplied by a dressing of 2 cwt. on section A and 

 4 cwt. on section B. In this case it was found that the most satisfactory 

 returns were oVjtained from the lightest dressing, whilst in this season's 

 plot the dressing of 270 Ihs. of superphosphate on section A gave a return 

 of 4 tons 8 cwt., and the heavier dressing, 540 lbs., on section B was 5 tons 

 2 cwt., equal to a gain of 8 cwt. of potatoes per acre, or 1.18 cwt. per 

 acre o\er the unmanured section. These results show that the red and 

 the grey soils require different treatment in manuring, or that the grey 

 loamv soils are more retenti\e of moisture, and conseduently artificial 

 manures give a better return than on the red soils, which are so liable 

 to drv out unless abundantly supplied I'y rain. 



The manure dressings on this plot were as follows: — 



Section A. — 270 lbs. superphosphate cost 10s. 6cl. per acre. 

 ,, B. — .540 lbs. superphosphate cost 21s. per acre. 

 ,, C. — No manure. 



,, D. — 270 lbs. superphosphate ^ cost -'Ss 6d 



,, 135 lbs. sulphate of ammonia ( 



E.^270 lbs. superphosphate 1 ^ .,- , , 



135 lbs. sulphate of potash j ^""^ "' ' ^''' 



From the following tal)le. giving the vields on sections D and E, it- 

 is apparent that this .soil has ah-eady sufticient nitrogen and potash and 

 that the onlv form of plant fof)d required is phosphoric acid: — 



Table K. — REfrnNS of Leongatha Plot. 



Varieties. — The plot contained the usual early and main crop varieties. 

 The earliest among the former is Vanguard, very similar to Early Rose. 

 It is a very small plant, fine quality, but a poor cropper, doing best in 

 garden culture. One peculiarity of this variety in this plot is its response- 



