364 The Philippine Journal of Science 198 
quired depends upon the maturing term of the variety and the 
optimum age for transplanting. Some long-maturing, hardy . 
varieties of rice can be transplanted with good results when 40 
or 45 days old, while other varieties requiring less time to 
mature must be transplanted before they are 30 days old. When 
transplanting is delayed until the internodes begin to lengthen, 
the plant can never recover from the injury, due to late trans- 
planting. According to experiments of the Bureau of Agricul- 
ture, about thirty to thirty-five days is the optimum time required 
for growing most varieties. 
NURSERY SEEDLING EXPERIMENT 
In order to determine the best method and the optimum rate 
of sowing the nursery seed bed, the following experiment was 
conducted at the College of Agriculture, the student members 
of the agronomy classes helping with the work. 
A seed bed (4 by 12 meters) located in the nursery was well 
prepared and the seed sown February 13, 1915. As the rain- 
fall is limited at this season of the year, an abundance of 
water was supplied by subirrigation and sprinkling—the water 
coming from a near-by stream. 
The bed was divided lengthwise into four strips, the inner 
strips being fertilized with a mixture of compost, chicken manure, 
and dried blood at the rate of 4.5 gantas, containing 0.5 kilo- 
gram dried blood and 12 per cent nitrogen per square meter. 
The different rates of sowing the seed appear in Table III. 
TABLE III.—Showing the results of the seedling experiment. 
be Rate of sowing. Average height of seedlings. Weight of 100 seedlings. 
Fertilized. Nonfertilized. Fertilized. Nonfertilized. 
Seeds per | 1 liter seed 
square per square 
meter. meter. | Drilled. | Broad: | pritied. | Broad | printed. | Broad: | pitted. | Broad: 
com. em. em. em. 9. g. g. 9. 
1, 000 28.0 47 ee! 22 28 121 109 47 39 
1, 500 18.7 51 55 26 24 79 74 86 17 
2, 000 14.0 55 44 25 29 89 73 $1 43 
2, 500 11.2 54 57 26 27 712 64 28 25 
3, 000 9.3 54 54 26 80 68 87 22 20 
3, 500 8.0 46 62 82 23 43 45 20 25 
4, 000 7.0 50 51 87 25 48 49 25 19 
4, 500 6.2 48 57 35 28 40 33 17 15 
5, 000 5.6 50 50 32 30 39 82 28 22 
5, 500 5.0 60 42 81 81 48 40 17 19 
6, 000 4.6 56 42 | 26 23 57 43 13 12 
Averages..........----- 50 | 51 | 29 eS | B44 25.3 28.2 
