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تأثير مواعيد الزراعة وعمر النبات التكنولوجي في إنتاجية ونوعية محصول الشوندر السكري

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 Publication date 2009
and research's language is العربية
 Created by Shamra Editor




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إحصائيات منظمة الزراعة والأغذية التابعة للأمم المتحدة FAO للعام 2205
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It is well established that sugar content of sugar beet increases as the plant reaches the biological maturity stage. This means that the sugar beet plant must be left in the field to complete its growth. Farmers are usually concerned with the hig hest yield of sugar beet roots regardless of their content of sugar, but sugar-processing companies are concerned mainly with the amount of sugar extracted from a certain weight of roots, in addition to the purity of the sugary juice. Farmers normally receives the price of their sugar beat crop based on the sugar content of the crop. Thus, in this type of farming, biological control is a worldwide-procedure. Biological maturity depends on ways of yield formation and a close control of the mechanisms of forming yield components (no. of roots / unit area; average root weigh; average sugar content) which require a detailed study of the characters of the grown cultivar and the overall conditions of the growing area. Results showed that harvesting of sugar beet sown in fall season befor the plant completes it’s growing cycle (in June) results in a big yield in addition to a reduction in sugar content in the roots which inturn results in a big loss in the national economy. Results indicated that delaying date of harvest up to ١٨th of July markedly increased root and sugar yield as well as sugar content in the beet roots. Increasing nitrogen rate up to ٤٠٠ kg / ha resulted in a marked increase in root and sugar yield / ha . On the other hand, sucrose content gradually decreased with excess nitrogen. Higher plant density (more than ١٠٠,٠٠٠ plants /ha) enforce for late harvesting in comparison with other densities for at least ١٠ days to obtain high yield of roots and sugar.
The aim of the research was to study the effect of five mowing dates (vegetative growth, beginning of flowering inflorescences, beginning of flowering, full flowering, and completion of vegetative growth at the beginning of September for plants that had previously been mowed), on some morphological, physiological, and productivity indicators of common thyme.
The study included the reality of marketing crop sugar beet in Syria in general, and in al ghabb 's area , in particular, has shown results that the problems and difficulties of marketing sugar beet back to the non-compliance of farmers date of Agr iculture appropriate and space devoted to the cultivation of the crop sugar beet and assessed by the General Authority to manage and develop Al Ghabb's area, in addition to the failure of the extension units in turn supply the deadline cards provide timely and sufficient quantities to farmers as a result of the process control system of favoritism in the distribution of cards supply extension units. In addition to the low energy manufacturing to the sugar mill, and its inability to absorb the quantities produced in excess of the agricultural plan, along with breakdowns lab frequent result gave the mechanisms used in it, and the need for frequent maintenance, and low efficiency of some sections of the lab, and the control system favoritism determine the degree of sweetness, as shown by the results Search also "high production and marketing costs for sugar beet crop and is higher than its price.
تضمنت هذه الدراسة واقع تسويق محصول الشوندر السكري في سورية بشكل عام , وفي منطقة الغاب بشكل خاص .

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