300 FORAGE OROPS 
Yield and composition of rape 
Owing to the fact that rape is usually fed from 
the field, data in reference to yields are somewhat 
limited. At the Wisconsin and New Jersey Sta- 
tions, the yields have ranged, in round numbers, 
from twenty-three to twenty-seven tons per acre. 
When mature, rape contains more dry matter than 
most root-crops, as, for example, mangels and 
turnips and the total yield of nutrients is much 
greater. The average composition and yield of 
nutrients per acre are as follows: 
Oneton Average acre- 
contains yield furnishes 
Per cent Lbs. Lbs. 
Wiebe er el Gi douse ee ee 86.2 Boag er 
Dry matter... ..... 13.8 276 6,900 
Ether extract. ...... 0.5 10 250 
Crude fiber... ..... 1.9 38 950 
Protein... 0. 2 se 6 8 @ 2.4 48 1,200 
ARID. a. calor. oe Ae he a aS 1.8 36 900 
Nitrogen-free extract ... 7.2 144 3,600 
At the New Jersey Experiment Station, rape 
when at the best stage for soiling showed the 
following composition: 
CoMPOSITION OF DWaRF Essex RAPE One ton 
contains 
Per cent Lbs. 
Wate! go Se we es a eee te Ge 84.50 ies 
Dry matter ..... ea Bcc at) Sa 15.50 310 
Ether extract ...... Steady ar hse 0.50 10 
Crude fiber ....... eps falrsay Uae “ae 2.60 52 
Protein: 3. <4, @ % ae a ww ws Re ees 2.30 46 
Ash cies So eS we See A ewe SS 2.00 40 
Nitrogen-free extract ........ 8.20 164 
