10 May, 1916.] Results of Experiments, 1915. 



295 



maturing wheats, Gluyas and King's Early, with a short a-rowing period, 

 gave 6 bushels 36 lbs. more per acre when sown late in the season than 

 when sown early. Similar results were obtained at other centres. 



These results imply that the seeding season may be protracted if 

 the farmer uses a judicious selection of early and late maturing wheat 

 varieties. The seeding should be commenced with the late maturing 

 types, such as Yandilla King, Marshall's ISTo. 3, followed by midseason 

 types as Federation, and the early maturing varieties such as Gluyas, 

 Bunyip, and King's Early should be reserved until the completion of 

 seeding. 



The rate of seeding is closely connected with the time of sowing. 

 Wheat sown early on well prepared land requires the minimum amount 

 of seed. 



The temperatures in April and early May favour speedy germina- 

 tion and vigorous healthy stooling. At the end of June the soil tempera- 

 tures approach 41 deg. F., the temperature at which germination and 

 plant growth are suspended. 



Seed sown late needs thicker seeding to counteract the lessened 

 germination and diminished stooling powers of the plant. 



These points are Avell illustrated in the rate of sowing trials at 

 Wvuna last season with Federation wheat. 



Early Sowing (May). 



;30 lbs 

 45 

 60 

 75 

 90 

 120 



per acre 



Bushels. 

 31.4 

 34.5 

 36.6 

 35.8 

 34.7 

 33.2 



30 lbs 

 45 

 60 

 75 

 90 

 120 



I. A IK Sowing (June), 

 per acre 



28.8 

 27.3 

 31.9 

 34.0 

 35.3 

 32.1 



The above table shows that the maximum yield per acre, 36.6 bui^hels, 

 was obtained by sowing 60 lbs. of seed early in May. In spite of the 

 mildness of the season and the Inte spring rains, none of the late so^vn 

 plots quite equalled this yiihl. The maximum yield on the late sown 

 plots was 35.3 bushels, but in order to secure this yield no less than 

 90 lbs. of .'^eed per ncre had to be used. 



The i-jiinfiill (lui'iiiii- the o-i-oAvim:- period w:is 12. S5 iiicbes. 



