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Studies of the culture of the Jerusalem artichoke, Helianthus tuberosus L. in Manchuria. I. Growth of the tops and tubers and seasonal variation in total sugar and nitrogen contents. II. Effect of planting time on growth and yield. III. Effect of planting distance on yield and development. IV. Effects of three fertilizer elements on yield.

Ogasa, T.; Arao, Y.

Rept. Inst. Sci. Res. Manchoukuo 4: 163-200

1940


Accession: 013513122

The earlier the planting, the earlier was the germination and the better the yield. Planting distance greatly affected the yields of tops and tubers. Wide spacing increased the yield per plant but reduced the total yield; the best yield of tops was obtained with rows and hills both spaced at 60 cm., while a row distance of 90 cm. and hills spaced at 30 cm. gave the best yield of tubers. No effect of N, P, or K on chemical composition of the tubers was found.

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