760 Journal of Agriculture. Victoria. [15 Dec. 1919. 



yields of hay (Algerian oats) from foni' of tlie rotations during tlie 

 past five seasons, is more iiistiiictive and reliable as a gnide to tlie vahu' 

 of rotation. 



Comparing tlie first system of rotatioi>-— or, rather lack of rotation — 

 hay continuously; with the other three systems, the following points 

 in favour of fallowing and crop rotation are evident. 



, System II. — Hay aftek Bare Faleow. 



One Crop in Ti.vo Years. 



This has doubled the yield, or, in other words, half the area sown 

 on fallow produced tlie same amount of liay. Thus, the net profits are 

 greater because — 



1. The cultural operations can be sjiread over the year to greater 



advantage. 



2. The soil is in perfect condition for seeding at the best time. 



3. Only half the area has to be ploughed and harve.sted. 



4. Only lialf the seed and manure are required. 



System III. — Hay, Barley. Bare Fallow. 

 l^u'O Crovs in Three Years. 



This rotation indicates the benefit derived from a change of crop by 

 slightly increasing the yield of hay over System No. II. and at the same 

 time having the land in fallow only every third instead of every second 

 year. 



System IV. — Hay, Barley. Peas. 

 A Crop every Year. 



Although the yield is lower here than in Systems II. and III. 

 where the hay is sown on fallow, the land in this rotation, like N"©. I., 

 is under crop every year. The introduction of barley and peas further 

 proves the case for rotation by producing } ton of hay per acre more 

 than System No. I. Avhere hay is grown every year. 



Green Manurial Rotation Field. 



The feeding-oif tests in this field have been completed for the j'ear. 

 the temporary fences removed, and the plots ploughed preparatory to 

 sowing wheat next year. In continuation of and supplementary to 

 the i)arti<'ulars contained in tlie September issue of this Jouimal. the 

 complete results for this season are summarized in the following table: — 



