# Manual of Agriculture for Secondary Schools: Studies in Soils and Crop Production

D.C. Heath & Company, 1910 - Agriculture - 89 pages

### Popular passages

Page 86 - The deficiency and excess in circumference of all ears not conforming to the standard of the variety, shall be added together and for every two inches thus obtained, a cut of one point shall be made.
Page 86 - Where the full diameter ot the cob is exposed, a cut of one point shall be made, and a proportionate cut as the cob is less exposed. Regularity of the rows...
Page 86 - ... be made. Measure the circumference at one-third the distance from the butt to the tip of the ear.
Page 86 - ... point shall be made. Kernels missing from the ear shall be counted as mixed. Difference in shade or color, as light or dark red, white or cream color, must be scored according...
Page iii - ... good for anything, the impulse to be doing something definite takes hold of them early, and the only way to keep a live boy in school or to make him good for anything after he leaves it is to be certain that some portion of his curriculum relates directly to some form of business activity outside. It is dangerous to attempt to educate a live boy with no reference to the vocational.
Page 77 - If, in a field of corn planted 3 feet 6 inches each way, there is on the average 1J pounds of corn to each hill, counting 80 pounds to the bushel to allow for shrinkage, what is the yield per acre ? 20. If corn is planted 3 feet 6 inches each way, and when mature is cut and put into shocks, each shock containing the corn from an area...
Page 78 - Measure 144 square inches = 1 square foot 9 square feet = 1 square yard 30V4 square yards = 1 square rod 160 square rods = 1 acre 43,560 square feet = 1 acre 640 acres = 1 square mile or one section Volume Measure 1,728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard 128 cubic feet = 1 cord (A cord of wood = 4...
Page 77 - Average number of leaves per plant 5. Figure the total leaf surface on five average corn plants (for each leaf blade take twice the product of the length and average width) 6. Length of ear stem, or shank (distance from joint, or node, to base of ear). Average of ten plants 7. The ear stem, or shank, may be...
Page 82 - Shell and weigh the cobs; subtract the weight of the cobs from the total weight of the ears, giving weight of shelled corn. Divide the weight of shelled corn by the total weight of ears, which will give the per cent of grain.