Green-Manuring Experiment . 
299 
on July 27. The results are given in Table IX. below. A 
second lot of mustard was drilled in on August 11, but the 
drought caused it to fail altogether, and it was ploughed up, 
the land being then left for wheat to form the crop of 1907. 
Table IX . — Rotation IV. Mustard , 1906. 
Stackyard Field. 
Plot 
Green produce per acre. 
T. 
c. 
q. 
lb. 
1 
After barley — decorticated cotton cake plot . 
3 
5 
0 
0 
2 
,, ,, maize meal plot 
3 
17 
3 
0 
3 
,, ,, no cake or corn 
3 
4 
1 
4 
4 
)) 1) ... 
2 
14 
1 
0 
Green-manuring Experiment (. Lansome Field), 
1905 and 1906. 
Barley having been grown in 1904, the land came in for 
green crops in 1905, to be followed by wheat in 1906. The 
green crops were, as before, mustard, rape, and tares, but it was 
decided to try winter-sown, instead of spring-sown, tares, so 
that the latter crop, being longer on the land, might have more 
time in which to store up nitrogen, and also prevent to some 
extent loss by drainage through the winter. In this way, it 
was thought, the tares would have a better chance of showing 
their superiority as a preparation for a corn crop, if such 
superiority really existed. It will be remembered that, up to 
the present time, tares — though a highly nitrogenous crop — 
have, over a number of years, failed to give as good a succeed- 
ing corn crop as has mustard. On the upper half (plots 1, 3, 
and 5), mineral manures (superphosphate 3 cwt. and kainit 
2 cwt. per acre) were applied again, and on the lower half 
(plots 2, 4, and 6), 1 ton of lime per acre was now put, to ensure 
that there should be no failure due to lack of lime. The latter 
was applied on October 31, 1904, and the mineral manures 
were applied to plot 1 on November 16, 1904. 
Winter tares were drilled on November 2, 1904, on plots 
1 and 2, and they came up very well. Rape seed (5 lb. per 
acre) was drilled on plots 3 and 4, and white mustard seed 
on plots 5 and 6, on May 11, 1905. Mineral manures went on 
plots 3 and 5 on May 13. The rape did not grow well and 
never was a strong crop, but the mustard flourished. The 
crops generally seemed to be better on the half with mineral 
manures applied. The tares began to flower June 22, and on 
July 3 the crops, both of mustard and tares, were cut, weighed 
green, and then returned to the land and ploughed in. The 
weights of green produce are given in Table X., page 300. 
