12 
BULLETIN 1343, U. S. DEPAETMEXT OF AGRICULTURE 
The short straw has been an advantage only on the richer soils, 
and in some instances Tvhere the variety has been sown on less fer- 
tile land it has been too short for convenient harvesting. Eichland 
is recommended primarily as a special-purpose variety for growing 
on rich soils where other varieties usually lodge and also in cases 
where the use of a short-strawed early oat as a riurse crop is an 
important consideration. 
EXPERIMEXTS ON IOWA FAEMS 
Bichland also was included in the farm experiments of the Iowa 
Agricultural Experiment Association. 
One of the most interesting 
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Fig. 8. — Diagram showing- tlie mean acre yields (in busliels) of Richland as compared 
witli those of Kherson as a standard oat Variety in 46 trials on Iowa farms during the 
five-year period from 1914 tO' 1918, inclusive 
phases of these experiments was the comparison of Richland with 
the parent variety Kherson. In Table 7 are given the annual aver- 
age and weighted average yields of Richland and Kherson obtained 
on 46 Iowa farms during the five-year period from 1914 to 1918, in- 
clusive. 
The data in Table 7 show that on Iowa farms Richland outyielded 
its parent variety Kherson by only l.Ji bushels per acre during the 
five years from 1914 to 1918, inclusive. The almost identical yielding 
power of these varieties as indicated by the mean yields from the 46 
