PLANT-BREEDING METHODS 429 
used in all the plant-breeding work at that station. These forms il- 
lustrate the sorts of records which it is necessary to keep; the sheet for 
data on varieties would have to be designed especially for each crop plant. 
Planted Harvested ~ Plot No. 
Last Year In Plant 
Length Ft. Breath Ft. Area Acres 
Manure 
Fertilizer 
Seed Used 
Amount of Seed Used 
Disposal of Crop 
Why Planted? 
Observer 
| ( NB-Say SOMETHING? A Blank Page Conveys No Information 
NOTES: ( and ory Suggests the Observer was Blind ) 
Maine Agricultural Experiment Station PLOT RECORD 
Fig. 175.—Facsimile of plot record sheet used in oat variety tests at the Maine Experiment 
Station. (After Surface and Barber.) 
Plot No. 
Seed Year Row No. 
4 Stand Straw Heads Yield 
8 Fall Height Symmetrical Total Weigut 
2 € of Full Weak Spreading Grain» 
FS Even Medium Str, Close Straw oo» 
a Uneven Stitt Side Bu.(32 Lb.)per A 
te Maturity Leaves Branches Stiff BuAct)perA 
3 Early Broad ih Drooping Lbs.per Bu. 
é Medium Medium »» Short Seeds in Gm. 
|| Late Narrow » Long Grain 
a Matured Well Color Dark Large White 
3 ” Fairly » Medium Small Yellow 
2 ” Poorly » Light Long Brown 
4 Stooling Disease Short Black 
Fs Heavy Smut: Much I< Spikelets Filled Mixed 
mS Medium ” Little £ ” Barren Good 
4 Light Rust: Much Pins Enclosed Fair 
a General Score 1 Little 1 Free Poor 
Fig. 176.—Facsimile of oat breeding record used in oat variety tests at the Maine Experi- 
ment Station. (After Surface and Barber.) 
The experimental errors involved in variety testing may be considered 
under two heads: (1) accidental errors such as incorrect weighing, 
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