Community life is also affected by the type of farming which is prevalent among its people. Modern agriculture is becoming specialized, and the crops grown are determined both by soil and climate and by the markets available. Fruit sections are due primarily to the former, while the regions producing market milk are determined chiefly by the latter factor. Now various types of farming make distinctly different demands upon the time of the farmer and so to a considerable extent they condition his social life. Dairying is probably the most confining sort of farming, and on the one-man farm there is little opportunity for getting away. "Haven't missed milking morning or night for six years," one dairyman replied to me when asked if he ever had a vacation. The fruit grower, on the other hand, during the winter can take a few weeks to go South or visit relatives without injury to his business. In the South after the crops are "laid by" in midsummer is the season for camp-meetings, picnics, and "frolicking" in general. Not only does the fruit grower have more leisure than the dairyman, but population is denser in a fruit-growing or trucking community and hence the communities are smaller and more compact. Just what characteristics of community life may be attributed to these differences in vocation it would be difficult to say, for so far as I am aware no exact studies have compared several communities of each type, but that they exercise a large influence on community customs and the social attitudes of the people is patent to even a casual observer who passes from a dairy section to a fruit region, or from the northwestern grain belt to a region of general farming.[21] Specialization in agricultural production also affects community life in that its economic interests are unified both as regards production and marketing and as the income of most of its people comes from one or two products, their attention is focused upon them and a greater degree of solidarity results than where farming is more diversified and farmers are not so dependent on the sale of one or two crops. Specialization is chiefly due to advantages which it ensures in marketing, as will be indicated in the next chapter, and it is because there is less economic pressure to compel general farmers to market together and that they lack the solidarity developed by specialization, that cooperative selling associations have not generally succeeded in a general farming region when they have attempted to handle various farm products.