. [Fruit culture]. duction of blackberries,etc. this is the best policy to follow. 10. Selection of Nursery Plants. Strong 1-year-old suckers are the bestblackberry nursery plants for setting in acommercial plantation. Such plants maybe obtained for about $12 per 1, of first-grade blackberry nur-sery plants are shown in Fig. 6. In (a) is shown a strong desir-able type of 1-year-old sucker. The plants shown in (b) and (c)are good but are less desirable than that shown in (a). Thequantity of fibrous roots on a blackberry nursery plant is animportant indication of its ability to make
. [Fruit culture]. duction of blackberries,etc. this is the best policy to follow. 10. Selection of Nursery Plants. Strong 1-year-old suckers are the bestblackberry nursery plants for setting in acommercial plantation. Such plants maybe obtained for about $12 per 1, of first-grade blackberry nur-sery plants are shown in Fig. 6. In (a) is shown a strong desir-able type of 1-year-old sucker. The plants shown in (b) and (c)are good but are less desirable than that shown in (a). Thequantity of fibrous roots on a blackberry nursery plant is animportant indication of its ability to make a thrifty Fig. 7 are shown two undesirable blackberry nursery have very few roots and could not be counted on toproduce vigorous plants. These plants are noticeably deficientin cross-roots, the one in (a) having only a short cross-rootand the one in (b) having none at all. Many well-grownnursery plants are greatly injured by the breaking off of thecross-roots through carelessness in Fig. 7 14 BLACKBERRIES AND DEWBERRIES § 18 The scale in Figs. 6 and 7 is graduated in inches and is usedto give a good idea of the size of the nursery plants. The samescale is used in Figs. 11 and 12. PLANTING OF BLACKBERRIES 11. The best time to plant blackberries is in the spring,because blackberry bushes planted in the fall are often injuredby low temperature during the winter. If blackberry bushesare planted in the fall, each bush should be covered with amulch of earth or of strawy manure. This mulch should beremoved in the spring before growth starts. Blackberry bushes are usually planted about the samedistances apart as black raspberries, that is, in rows 7 feetapart and the bushes spaced 2| feet apart in the rows; at thesedistances about 2,489 plants will be set per acre. Manysuccessful growers, however, claim that blackberries shouldhave more space and that the rows should not be less than8 feet apart with the plants spaced 3 feet apart in the these
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