Dec. 2, 1920.] 



Agricultural Gazette cf N.S.W. 



877 



show a g-radual increase with fertilisers, P7, with a yield of 107 bushels, 

 being 22 bushels per acre better than the unmanured plot. Payable increases 

 were obtained from all fertilisers except ground limestone. 



This experiment is of particular interest in respect of many of our rich 

 maize lands that have been growing maize continuously without artificial 

 fertilisers for many years. It demonstrates that, although the depletion of 

 fertility is so slow that it may take years before maize cannot be profitably 

 grown, the application of artificial fertilisers results in substantially in- 

 creased yields and less depletion of the soil's fertility. 



Maize Variety Trials. 



.5 5- 



Oca 



ci s: — 

 pa-t: 5 



cm:? 



3 o 



<6d 



o 



d 



^^1 



'-.a 



Date sown. 



4th Dec, 

 1910. 



SOtli Oct. 

 1919. 



If.th Nov. 

 J 9 19. 



!>-2nd Nov., 

 1919. 



16th Jan. 



1920. 



25th Nov., 

 1919. 



ISthOct. 

 1919. 



Improved Yellow Dent 



Golden Superb ... 



Yellow Hogan ... 



Learning 



Golden Nugget 



White- cap Horsetobth 



Narrow Hogan... 



Kansas Sunflower 



Red Hogan 



Early Clarence... 



Hickory King ... 



Yellow Mastodon 



Gold Standard Learning 



Eureka ... 



Golden King ... 



Early Yellow Dent . . 



Silvermine (Manning River). 



Goldmine 



Golden Glow ... ... 



Golden Beauty... 

 Leggett's Pride 

 Silvermine (Yanco) ... 



U. S. l.'^S 



Giant White 



Boone County White .. 

 Small Hogan ... 

 Large Macleay Yellow 

 Canada Early Flint ... 

 King of the Earlies ... 

 Silver King 



bushels. 

 67i 

 64 

 63i 

 63 

 5S| 

 57^ 

 56' 

 532 

 52^ 

 48 

 47i 

 461 

 4-2^ 

 41 

 S9h 



bushels. : bushels. 



... I 81 



36 



41 



JH 



53 



50 



374 



37 



34 



334 



31i 



31 



86 

 68 

 78 

 79i 



77 



49 

 764 



IH 



bushels 



29 

 25 



27 



bushel; 



854 



s. bushels. 

 40^ 



284 



:^7 



31 



26 



25 



58 



63i 



«3 



63 



61 

 49 



34 



35 



41 



45 

 29 



31 



bushels. 



52J 



63 

 61 



36i 

 44 



49 

 21 



23 

 43 



32 



29 

 30 



3Si 



m 



39 

 41 

 28 



Lawrence.— The experiments were sown on a clay loam soil of medium 

 fertility. The previous crop, oats and vetches, was fed to stock and then 

 allowed to grow a foot high and ploughed under. The first ploughing was 

 on 20th September, and the second on 10th December. The ground was 

 left in its rough state until heavy rain fell on 28th December, when it was 

 harrowed as soon as it was dry enough and planted on 3rd January. The 



