The effects on growth, development and yield of sugar beet of extension of the growth period by transplantation

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Abstract
1. A series of three field experiments, concerning the effects on growth, development and yield of sugar beet of extension of the growing season by transplantation, were carried out in 1962, 1963 and 1964. The first two experiments were subject to sequential sampling programmes for growthanalysis purposes, but in the third only yield data were recorded.2. Root yield increased with advance in planting date and increase in plant population in all 3 years. Nitrogen had no effect on root yield in any year. There was no consistent interaction between time of planting and plant population in their effects on root yield. The advantage for transplanting over field sowing ranged from 4 tons washed beet per acre in the case of an early field sowing (20 March) to 10 tons in a late one (23 April). There were no treatment effects on the concentration of sugar in the roots. The roots of transplants were more globular in shape and fanged than were those of field-sown beet.