120 FARM ARITTI^rETIC. 



trees, cultivated two seasons and only one season; (3) 

 the difference due to spraying in the once cultivated half 

 of the orchard (check trees with sprayed ones) ; and (4) 

 a like difference between the 10 trees twice and the 10 

 trees once cultivated, but not sprayed. What were his 

 answers? 



391. A farmer bought a Delaware peach orchard of 

 200 trees that averaged three pecks of fruit to the tree 

 the year he bought it. He planned to sell the crop in 

 half-peck baskets, and estimated that 15 per cent of the 

 crop would be unsalable. He ordered his baskets on this 

 basis, but when he picked the fruit the trees averaged 

 10 per cent less than he had estimated, and when graded 

 20 per cent were unsalable. How many baskets had he 

 left on hand? 



392. The second year he experimented in thinning. 

 After the "June drop" he removed half the fruit from 

 the trees in each alternate row through the orchard. This 

 year he calculated upon three pecks to the tree and 20 

 per cent as unsalable. But only 10 per cent of the fruit 

 was unsalable, and all of that was on the unthinned trees. 

 As the baskets left over from the previous year were in 

 good condition and could be used, how many baskets did 

 he order, and how many should he have ordered? 



393. The salable peaches on the unthinned trees sold 

 for 40 cents a basket, and that from the thinned trees at 

 50 cents. He calculated the cost of thinning at 15 cents 

 a tree. How much did he make on the operation because 

 of the finer fruit? 



394. A Maryland fruit grower uses annually 150 bar- 

 rels of lime-sulphur spray in his 750-acre orchard. Sup- 

 posing his trees to be 30 feet apart, and supposing that he 

 can buy the spray material at $4.50 a barrel, how much 

 does the material alone cost an acre ? 



