34 BULLETIN 281, U. S. DEPABTMEXT OF AGRICULTURE. 
MARCH. 
1. A farm of 125 acres is valued at $16,000 in a township where taxes are SI. 50 on 
$100 and interest on good security is 5 per cent. What minimum rent on a club acre 
would be necessary to cover interest and taxes? 
2. Compute the number of hills in an acre of corn planted according to club direc- 
tions. If there are 1.400 kernels of corn in a pound, how many pounds will be needed 
to plant the club acre, if it is tested well? 
3 . An average of two and one-half hours a tree, at 25 cents an hour, is spent in pruning 
37 trees. How many more apples at $3.50 a barrel will be needed to pay for this work? 
4. If it costs 9 cents extra per dozen to trap-nest eggs for setting, what percentage of 
extra profit is there in selling setting eggs at $2 per 15 eggs instead of at 30 cents a 
dozen for market? 
5. Make out a bill of lumber for a cold frame to be covered by two 3-foot by 6-foot 
sash, the walls to be boarded 2h feet on the north side and 2 feet on the south. Add 
20 per cent for waste; bill lumber at $30 per M, and allow 12 cents for nails and $1.90 
each for sash. Receipt the bill properly. 
6. How many tomato plants may be started in the cold frame in problem 5, allowing 
2\ inches each way for each plant? 
1. A club member pays $7.20 for seed potatoes for his half-acre. $18 for fertilizer. 54 
cents for plowing, $2.16 for planting, $1.44 for cultivating. $5.76 for spraying, $3.60 
for harvesting and sacking. The yield is 91 bushels. It cost 7 cents a bushel to get 
them to market and the commission man returned to him 59 cents a bushel. Find 
the net profit. 
2. How much would this boy have gained by selling direct to the retailer and 
dividing the middleman's profit? The retailer paid $1.25 a bushel. 
3. Compare results on a half acre for early potatoes yielding 120 bushels an acre to 
sell at $1.30 as compared with late potatoes producing 185 bushels and selling at 55 
cents. Are there other advantages in either plan? 
4. A fertilizer formula, as 2 : 8 : 2 indicates the percentages of the entire weight avail- 
able for plant use as nitrogen, phosphorus, and potash, respectively. Find how many 
pounds of each in 1 ton (2.000 pounds) of fertilizer with the above formula. 
5. When nitrogen is worth 15 cents a pound, phosphorus 4 cents, and potash 7 cents, 
find the fertilizing value of 1 ton of 2 : 8 : 4. 
6. Much of the nitrogen can be provided by crops like clover. and alfalfa. What 
is the money saving per ton on each per cent of nitrogen thus saved? What gain when 
2 per cent extra nitrogen on 1 ton fertilizer increases the yield of timothy hay one-half 
ton? Use local prices. (Use Farmers' Bui. 44.) 
MAY AXD JUNE. 
1. Arsenate of lead costing 17 cents a pound is suspended in water, about 5 pounds 
in 50 gallons of water. If a 50-gallon tank full will spray 9 trees at a cost of 40 cents 
for labor, how much will it cost to spray three times an orchard of 25 trees? 
2. Bordeaux mixture consisting of 6 pounds of copper sulphate at 8 cents a pound 
and 4 pounds of lime at 1 cent a pound in each 50 gallons of water is used to spray 
potatoes three times. If it takes 30 gallons for once over the field and the labor is 75 
cents each time, find the cost of spraying. 
3. The crop in the field in problem 2 was increased 63 bushels apparently because 
of spraying. Whal was net gain if potatoes sell at 55 cents a bushel? 
4. One ton of clover contains 40.16 pounds of nitrogen, 11.2 pounds of phosphorus, 
and 36.6 pounds of potash. Find the fertilizing value of one-half ton plowed down 
on an acre. Use process given before. 
