. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. FACTORS AFFECTING RETURNS FROM POTATOES 81 Figure 6. Average Hours of Man Labor Used for Planting by Hand and by Machine. Hours 15 plowed twice. AVith a tractor it took from hours to hours to plow rh acre. Stone picking was reported on only one farna in Granby. This freedom from stones is an important natural advantage. The usual preparation of the land after plowing in Granby consisted in double disk harrowing once or twice and smoothing once with a two section spike-tooth harrow. Those farmers w
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. FACTORS AFFECTING RETURNS FROM POTATOES 81 Figure 6. Average Hours of Man Labor Used for Planting by Hand and by Machine. Hours 15 plowed twice. AVith a tractor it took from hours to hours to plow rh acre. Stone picking was reported on only one farna in Granby. This freedom from stones is an important natural advantage. The usual preparation of the land after plowing in Granby consisted in double disk harrowing once or twice and smoothing once with a two section spike-tooth harrow. Those farmers who owned tractors used the double action disk harrow. The smoothing harrow was usually horse-drawn. - About half the growers in Granby treated their seed with corrosive sublimate in 1926. The time used is included with cutting in Table 3. Time for cutting varied with the method used and the kind of seed. Some of the No. 2's were cut only once if at all. Out of fourteen farms studied in Granby, five used a one-man planter, eight used a two-man, and one plant- ed by hand. Figure 6 shows the aver- age time used in all areas for plant- ing by different methods. > Whether the two-man planter is enough more accurate to warrant the use of an- other man is a matter which each farmer must determine for himself. The saving in man hours as shown in these records was from 1 hour to 5 hours per acre. When the one- man planter is carefully operated and the seed evenly cut there are few skips; but when it is not, or when the seed is uneven, there may be many. Time spent in spreading addition- al fertilizer is not included under planting. Half the farmers applied additional fertilizer a week or ten days after planting. Operations After Planting. On all but four of the farms, the potatoes were rolled once after planting and gone over with the weeder once or twice before cultivating. The most common number of cultivations was six, although the range was from four to twelve. Both one and two-h
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