GROWING PLANTS WITHOUT SOIL FOR EXPERIMENTAL USE 9 



Table 3. — Germination, transplanting, and nutrient requirements for selected plants 



Germination 



Species 



Method ■ 



Seeding 

 depth 



Temperature Time 



Period between seeding in 



vermiculite and- 





Transplant- 



Applying 



nutrient 



ing in 



solution at — 



nutrient 

 solution 







One-third 



One-half 





strength 



strength 



Days 



Days 



Days 





6 







6 



21 



14 



6 



._ 





.. 



6 



21 



7 



21 



21 



7 



.. 



21 



7 







._ 



10 



__ 



21 



6 



21 



.. 



5 



.. 



21 



6 



15 



28 



7 



.. 



.. 



5 



21 









21 







5 



21 



28 



7 



28 



28 



5 







21 



8 





21 



4 





1 I 



5 



.. 



Alfalfa 1 



Barley 1,2 



Barnyardgrass 1 



Bean 'Black Valentine' 1,2 



Beet 1 



Bermudagrass 1 



Bluegrass 1 



Broadbean 1,2 



Broccoli 1 



Buckwheat 1,2 



Cabbage 1 



Carrot 1 



Corn 1,2 



Cotton 1,2 



Cucumber 1,2 



Dill 1 



Endive 1 



Fall panicum 1 



Flax 1 



Head lettuce 1 



Johnsongrass 1 



Leaf lettuce 1 



Limabean 1, 2 



Melon 1,2 



Millet 1,2 



Mustard 1 



Oat 1,2 



Okra 1,2 



Parsnip 1 



Pea 1,2 



Peanut 1,2 



Pepper 1 



Pigeongrass 1 



Pintobean 1, 2 



Plantain 1 



Potato 1 



Red clover 1 



Rice 1,2 



Sorghum 1,2 



Soybean 1,2 



Spinach 1 



Squash 1,2 



Sudangrass 1,2 



Sugarbeet 1 



Sugarcane 1 



Sunflower 1,2 



See footnotes at end of table. 



Cm. 



1.3 



2.5 



1.3 



2.5 



2.5 











3.8 



1.3 



2.5 



1.3 



1.3 



2.5 



1.3 

 1.3 

 2.5 

 1.3 

 1.3 

 '5.0 

 1.3 



2.5 

 2.5 

 1.3 

 2.5 

 3.8 

 1.3 

 1.3 

 2.5 

 



'5. 

 1. 

 2. 

 1. 

 2 

 1 

 2. 

 1. 

 2 





 3 

 5 

 3 

 5 

 3 

 5 

 3 

 5 

 1.9 

 2.5 



°C. 



26 

 30 

 30 



27 

 25 

 26 

 26 

 24 

 23 

 30 

 23 

 23 

 30 

 30 

 30 

 30 

 23 

 23 

 30 

 23 

 30 

 25 

 27 

 30 

 30 

 23 

 30 

 30 

 23 

 24 

 30 

 30 

 30 

 27 

 25 

 21 

 21 

 30 

 30 

 30 

 25 

 30 

 30 

 25 

 30 

 30 



Days 



6 

 6 

 6 

 6 



7 



7 



7 

 10 



6 



5 



6 



7 



5 



5 



5 



7 



5 



8 



4 



5 



7 



5 



6 



5 



5 



6 



6 



5 

 10 



5 



7 

 10 



6 



6 



7 



5 10 



6 



7 

 5 

 5 

 5 

 5 

 5 

 7 

 7 

 4 



14 



14 

 21 



28 



28 

 14 



49 



2S 



14 



28 



14 

 21 

 35 



5 

 5 

 6 

 6 

 5 

 10 



7 



10 



6 



7 

 10 

 6 

 7 

 5 

 5 

 5 

 5 

 5 

 7 

 7 

 4 



1; 

 21 

 14 

 21 

 21 



5 

 42 



14 



21 

 14 

 21 

 35 

 28 



