1532 



Journal of Agriculture, Victoria. [ii Sept., 1911. 



Variety. 



New Zcalaiiil Pinkeye 



V. — Tre.\tmbnt for Scab. 



Condition of Ssed. 



Treated 

 Untreated . . 



Clean. 



per cent. 

 79-5 

 60-3 



Scabby. 



per cent. 

 20-5 

 39-7 



Manures. — This plot was badly attacked by the Blight. On reference 

 to Table III., it will be seen that some varieties were not harvested. The 

 results obtained from the manures are therefore not as reliable as they 

 would have been had the crop been clean. Section A, with 2 cwt. of 

 superphosphate, really shows an increase over the unmanured section (C) of 

 ^6 lbs. per acre, whilst the maximum dressing of 4 cwt. of superphosphate 

 increased this yield by 11 cwt. Section D shows an increase of i ton 

 10 cwt. I qr. for a dressing of 2 cwt. superphosphate, and i cwt. sulphate 

 of ammonia ; but this .section with a dressing of nitrogenous manure 

 suffered most severely from Blight, nearly half the crop being affected. In 

 section E,- the addition of i cwt. of sulphate of potash to the 2 cwt. 

 dressing of superphosphate did not increase the yield. 



Leongatha Plot. 



The plot at Leongatha was planted on the 29th and 30th November, 

 on Mr. G. Williams' farm near the town. The soil was a grey loam on 

 bottom land, very suitable for potato culture in a dry season, but rather 

 wet for such a season as the last. This, no doubt, accounted in a measure 

 for the severity of the Irish Blight, which on this plot supplies some in- 

 teresting results. 



On reference to Table VI., it will be noted that in the unmanured 

 section only one variety survived the attack of Blight, viz., State of 

 Maine. It is also remarkable that this variety returned the highest per- 

 centage in this section, as well as the whole plot, of clean tubers, being 

 83 per cent, clean for section C, and 63.4 for the five sections. 



The following varieties were so badly diseased that records could not 

 be obtained, viz., Black Prince, Green Mountain, Brownell's Beauty, Van- 

 guard and Scotch Grey. 



VI. — Leongatha PtoT. 



Bruce 



Black Prince 



Adirondak 



Scruftic 



Green Mountain 



Champion 



Brownell's Beauty 



Vanguard 



Scotch Grey 



Stat« of Maine . . 



Sections. 



Ma'ures. — The results from the manurial dressings, as far as theii 

 influence on the yield of the crop is concerned, are valueless on account of 

 the Blight. Their influence on the disease in the crop is dealt with at the 

 conclusion of this report. 



