OATS : PRACTICUMS 



315 



Beards: long; medium short; straight; twisted. 



Color cf leaves : light green ; medium green; dark green. 



Leaf blade: average length of ten blades , , , 



Leaf blade : average width of maximum dimensions of ten blades . , , 



Leaf blade: erect; ascending; drooping. 



Leaf blade : smooth ; rough ; downy, 



Ligule: large; medium; small. 



431. Mature Dried- Plant in Laboratory. — Proceed as in paragraph 

 above. If opportunity to study varieties in the field is lacking, some of the items 

 above may be included here. If only a field practicum is desired, some of the items 

 below may be included above. 

 I. Length of panicle: average of five panicles from base of lower whorl to tip of 

 flowering glume of upper spikelet , . , 

 Number of whorls: average of five panicles . . , 

 Number of ma.m branches : average of five panicles , , . 

 Number of spikelets : average of five panicles . , 

 Variation in length of pedicel: . . . to . . . 

 Number of grains: average of five panicles . . . 

 Number of grains per spikelet . . . 

 Weight of grains : average of five panicles . . . ; weight per 100 



grains . . . 

 Relative size of lower and upper grains of spikelet: weight of twenty-five 



lower grains . . . ; weight of twenty-five upper grains . . 

 Per cent cf kernel : weight of 100 grains . . . ; weight of 100 kernels 



. . . ; per cent . . . 

 Plumpness: plump; medium; inflated. 

 Flowering glume : thick ; medium ; thin. 

 Length: twent>'-five grains from base to tip of flowering glume . ,; 



twenty-five kernels . . . 

 Density : weight per bushel obtained by weighing one pint . . . 

 Color of grain : light yellow ; yellow ; gray ; reddish brown ; black. 

 432. Soil Fertility in Relation to Oats.— Provide each student with ten 

 three-gallon earthen jars, which each may fill with earth 

 secured from home farm or elsewhere. Make application 

 of plant food as follows : 



1. None. 



2. Nitrogen. 



3. Phosphorus. 



4. Potassium. 



5. None. 



6. Nitrogen and phosphorus. 



7. Nitrogen and potassium. 



8. Phosphorus and potassium. 



9. Nitrogen, phosphorus and potassium. 

 Kx None. 



