. The cereals in America. 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 it
. The cereals in America. 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 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, phosp
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