10 



University of New Hampshire 



[Sta. Bull. 323 



10 



13 



20 



45 



50 55 



25 30 35 40 



Agc of Trecs 

 Figure 6. — High Cost Curve and Standard Cost Curve of Labor, 



MATERIAI.S AND LAND PER 1000 PERMANENT TREI-:S. 



The high cost curve is based on a 30% higher labor cost due either to inefficiency 



or higher wage rates. If labor were available on the farm, the out-of-pocket 



expense would be lower than the standard curve, especially in the early period. 



60 



Income 

 Yields 



In the first bulletin of this series a curve representing normal expected 

 viL'ld for the commercial life of the oreliard was developed. For this 

 study this curve has hoen modified slip'litly ])y assuming 60 years instead 

 of 65 as the commercial life of tlie orchard and also l)y cutting yields 

 gradually after the fortieth year. There has been a growing realization 

 that under present day conditions the profitableness of carrying the or- 

 eliard Ijcyoiid the sixtieth year is limited. OixM-ators exjiorieuco trouble 

 in eoiil rolling fungus and insect pests in llie largt> old trees, and due to 

 lower (|uality the fruit is not as valuable. 



The standard yield curve 



The yield eurve represents the estimated crop which can be expected 

 under normal conditions of production in a commercial oirliard under 

 good management. (Fig. 7.) 



It is a conservative estimate. Some producers on good sites have had 

 much better yields, but on the other liaiul. many have experienced lower 

 yields. 



The dehiyed yield curve 



it is well known tiiat certain vaiieties such as the Spy tend to come 

 into bearing late. In some orchards, due to management or some un- 

 (h'termined I'cason. trees of many varieties do not come into bearing 

 normallv. In order to studv tlie effect of delaved bearing, an additional 

 yield enr\c was eonstructi^d with the hearing age beginning at 11 instead 

 of seven years of age. (Fig. 1.) 



High and low yields 



l)ue to j)o;)r site 01' some lack in management, such as deficiency in 

 cross-pollination, the yields on some orcliards are definitely substandard ( 



