Time to Maturity - 



Life- 



Soil Reauirements- 



(Read Preface) 



REOUIREfffiNTS AND TgrHODS OF GROWING POTATOES 



75-90 days for early crop 

 150 days for fall crop 



Annual 



Surface : Mellov;, rich, fine sand and silt Icam or peat 

 Subsoil : Y/ell drained, 3' or more in dearth 



Climatic Requireraents- 



Freedom from excessive heat v/hen ycung, and from severe frosts. 



Water Reouirements a.nd Irrigation - 



Plants must not be subjects to variations in moisture. If irrigated, 



water best applied at time plant is in blossom; allow 

 40 days to intervene between last irrigation and 

 harvest. 30" optimvira needed (rainfall and irrigation) 



Calendar of Operations- 



Preparing Seed Bed 



For early crop - Plowed November and December, 



worked down. 

 For fall crop - January plov/ed 10" deep, and 



worked down. 

 In Delta lands, where previously cropped, 



plowing and planting take. 



place simultaneously, 



Plamting : 

 Time : 



For early crop - January - February 



For fall crop - April 15^ June 20 

 Quantity: 6C0 - 800# 



Method and Distance: 35" rows, 14" - 16" in rows. Planted by hand 



or by machine, using cut potatoes and 

 dropping in plo'v furrov/s every 3d round. 



Care of Grov/ing Crop: 



2- 8 cultivations and ridged two months after 

 planting. Irrigation usually replaced by 

 cultivation. 



Varieties: Triumph and Rose (early), Uncle 3ani, 

 American Wonder (late) and Burbank 



Nev/ seed imported every 2d or 3d year from Oregon 



