The structure of farm output in 1970 did not differ materially from the structure in 1960. The share of crops in the total output declined from 67.3 to 64.7 percent, while the share of livestock production rose correspondingly from 32.7 to 35.3 percent. The proportions of grains and technical crops were identical in both years. The share of vegetables, potatoes, and melons declined slightly, but the proportion of feed crops dropped from 9.2 to 6.2 percent. The lag in the growth rate of feed production has contributed to the difficulties in the livestock sector. Crops With the exception of rye, potatoes, hemp, and cotton, output of all major crops increased substantially in the 1960s (see table 16). The production of rye declined sharply as a result of the diversion of rye acreage to the production of more valuable crops. By 1970 rye output had become insignificant--less than 1 percent of the volume of wheat produced in that year. The decline in potato production was minor, but the output of raw cotton declined by 15 percent. The largest increases were attained in the production of alfalfa and table grapes--crops that are important for livestock production and export, respectively. Barley output, important for livestock and beer production, rose by 82 percent. Wheat output surpassed 3 million tons in 1970; it reached 3.56 million tons in 1972. _Table 16. Bulgaria, Production of Major Crops, Annual Average, Selected Years, 1958-60 to 1966-70, and 1970_ (in thousands of tons) --------------------+-----------+-----------+-----------+---------- | Average | Average | Average | Crops | 1958-60 | 1961-65 | 1966-70 | 1970 --------------------+-----------+-----------+-----------+---------- Wheat | 2,376 | 2,208 | 2,919 | 3,032 Rye | 97 | 58 | 35 | 28 Barley | 542 | 694 | 986 | 1,167 Corn (grain) | 1,298 | 1,601 | 2,147 | 2,375 Sunflower seeds | 281 | 338 | 462 | 407 Hemp (dry stem) | 62 | 49 | 62 | 55 Cotton (raw) | 54 | 39 | 46 | 36 Tobacco (oriental) | 77 | 101 | 109 | 112 Sugar beets | 1,328 | 1,440 | 1,862 | 1,714 Tomatoes | 525 | 738 | 716 | 685 Potatoes | 383 | 400 | 380 | 374 Alfalfa | 598 | 951 | 1,443 | 1,719 Apples | 265 | 315 | 402 | 363 Grapes | 721 | 1,006 | 1,133 | 884 (Table grapes) | (135) | (267) | (313) | (263) --------------------+-----------+-----------+-----------+---------- Source: Adapted from _Statistical Yearbook, 1971_, Sofia, 1971, pp. 120-122.