36 MISC. PUBLICATION 4 3 4, U. S. DEPARTMENT OF AGRICULTURE 





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Recommendation for seed 

 storage and pretreat- 

 mcnt 



Fall-sow or stratify 30 to 45 

 days before spring plant- 

 ing. 



Cold dry storage, spring 

 sowing recommended; 

 soak several days in cold 

 water. 



Acid treatment 2 hours. 

 Fall sowing without 

 treatment also successful. 

 Also 90 days stratifica- 

 tion before spring sowing. 



Spring-sow; stratify 45 

 days. 



Kail-sow or stratify over 

 winter in outside pits. 



Do. 



Sow late in fall or store dry 

 and stratify 38 to 45 days 

 before spring sowing. 



Dry storage until sowing. 

 Acid treatment 20 min- 

 utes. Mechanical scari- 

 fication also successful. 



Proba- 

 ble type 



of seed 



dor- 

 mancy 3 



^, ju cc co ic cc co cc cc io 



si 



s 



Clean 

 seed per 

 pound 2 



Number 

 125-160 



1, 300 



1. 700 



150,000- 



200, 000 



32-45 



78 



200-300 

 27, 000 



Extrac- 

 tion fac- 

 tor by 

 weight 



Percent 

 100 



10-20 

 30 



40-65 

 40-65 



30-40 

 50 



Remarks on collection 

 and extraction 



Seed crop uncertain. 

 Avoid excessive dry- 

 ing. 



Seed usually plentiful 

 and easily collected. 

 Seed embryo enclosed 

 in endosperm. 



Seed usually abundant. 

 Avoid heating. 

 Spread on floor and 

 moisten until soft be- 

 fore extracting. 



Seed normally plentiful. 

 Can run seed through 

 macerator to break up 

 balls. 



Crop generally plenti- 

 ful. Not necessary to 

 remove husk unless 

 reduction of bulk is 

 desirable, 

 do 



Crop uncertain. Seed 

 often purchased from 

 farmers. Avoid 

 cooked seed. 



Seed sources limited- . 



Method 



of ex- 

 traction 



Code 

 number 

 14 



11 

 11 



12 or 14 

 12 or 14 



11 

 10 



Method 

 of collec- 

 tion 



Code 



number 

 6, 7, or 8 



6, 7, or 8 

 7 or 8 



7 or8 

 6, 7, or 8 



6, 7, or 8 



6, 7, or 8 

 6 or 7 



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EHoJ 



cu-^-ic »o tc -*r --en cn cc 

 S> R o o o c 



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CD 



>. 



Eh 



Oblong nut encased in 

 thin husk. 



Pale orange, ovate, ob- 

 long berry, 1 to \Yi 

 inches in diameter 

 with 3 to 8 seed. 



One-seeded drupe in 

 clusters. Yellow, 

 sem i translucent 

 flesh. Turns black 

 in winter. Persist- 

 ent. 



An aggregate (ball) 1 

 inch in diameter con- 

 taining numerous 

 elongated akenes. 



Round drupe with 

 fleshy indehiscent 

 exocarp enclosing 

 hard, thick-walled 

 nut. 



Same as black walnut, 

 smaller nut and 

 thinner husk. 



Large, edible, one- 

 seeded drupe. 



Inflated pod with pa- 

 pery walls. 



Form, habitat, and range 

 in the prairie-plains 



Medium-height native 

 tree; rich bottom lands; 

 Oklahoma and Texas. 



Medium-height t r e e ; 

 stream banks; Kansas, 

 Oklahoma, and Texas. 



Native medium-heighl 

 tree; stream banks or 

 on sand dunes; south- 

 ern Kansas to Texas. 



Native tall tree; bottom 

 lands; southeastern 

 Nebraska to Texas. 



Medium-height native 

 tree; rich bottom 

 lands; South Dakota 

 to Texas. 



Medium -height native 

 tree; bottom lands; 

 western Oklahoma 

 and Texas. 



Small tree; introduced 

 from Russia; hardy 

 from Nebraska south- 

 ward. 



Shrub; introduced from 

 Europe. 



CO 



s 



'5 



Medium-to-tall de- 

 ciduous trees — 

 Continued. 

 Pecan __ 



Persimmon, 

 common. 



Soapberry, 

 western. 



Sy cam o re , 

 American. 



Walnut, black 

 Walnut. 



Texas. 



Short trees or 

 shrubs: 

 Apricot 



Bladder-senna 



