REPRINTED FROM JOURNAL OF THE AMERICAN SOCIETY OF SUGAR BEET TECHNOLOGISTS Effect of Irrigation Method and Late Season Nitrate-Nitrogen Concentration on Sucrose Production by Sugarbeets'
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چکیده
For maximum sucrose production by sugarbeets (Beta vulgaris L.) in southern Idaho, the available soil nitrogen (N) level should be highest during early July, when the plant N uptake (N u p) rate is highest, and lowest by the latter part of August ( 1, 12r. Inadequate N during the early growth stages limits root and sucrose yield, whereas excess N stimulates top growth, increases root impurities, and decreases sucrose percentage and extractable sucrose (7). Inadequate irrigation limits root and sucrose yields, whereas overirrigation leaches N and may affect the sugarbeet response to N application (2, 6, 9, I I).
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REPRINTED FROM JOURNAL OF THE AMERICAN SOCIETY OF SUGAR BEET TECHNOLOGISTS Effect of Row Spacing and Nitrogen Rate on Root and Sucrose Yield of Sugarbeets in Southern Idaho1
Research results at other locations in western U.S. indicate that a plant spacing of approximately 12 inches within rows and 20 or 22 inches between rows is necessary to obtain near maximum yields of sugarbeets (Beta vulgaris 1..) and yet maintain adequate space for machinery operation (4, 6, 10). 3 Increasing row and plant spacings with corresponding decreases in plant population have reduced ...
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For maximum sucrose production in southcentral Idaho, the available N level in the soil should be highest during July, when the plant N uptake rate is highest, and should be nearly depleted by about August 20. The desired available N supply in silt loam soil depends on proper N application and removal of excess N from the root zone late in the season. If the available N level in the soil can be...
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In a 3-year experiment (2002-2004), five N rates (0, 60, 120, 180, 240 kg N ha-1) were applied to sugar beets arranged in a Randomized Complete Block design with six replications. Experimentation took place under the semi-arid, irrigated conditions of central Greece. The aim of this work was to study the late season response of sugar beet crop to N fertilization as assessed by non-destructive m...
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Nitrate-nitrogen in sugarbeet petioles is used to evaluate current N status of sugarbeet crops. Since the NO,-N changes rapidly during the season, better relationships are needed to interpret these data relative to sugarbeet N nutrition. Sugarbeets (Beta vulgaris, L.) were grown at four N fertilization rates and two irrigation levels to determine the root yield, sucrose percentage, sucrose yiel...
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Defoliation produced by abiotic factors and the subsequent re-growth can reduce sugar beet (Beta vulgaris L.) sucrose content and final sugar yield. Field experiments were conducted during 2003 and 2004 growing seasons in the farm of Hellenic Sugar Industry SA, Larissa factory, central Greece. Three sugar beet cultivars (Rival, Europa and Corsica) were ordinary irrigated till the beginning of J...
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