Effect of Planting Dates, Plant Population and Nitrogen Fertilization on Sugar Beet Productivity Under the Newly Reclaimed Sandy Soils in Egypt

(Abdul Rahim Abdul Rahim night, Mohsen)

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Abstract

This investigation was carried out in a newly reclaimed sandy soil to study the effect of planting dates, plant populations, nitrogen fertilizer levels and times of its application and their interactions on sugar beet productivity. Plant population markedly affected all studied characters in the two seasons. The highest root and sugar yields ha-1 were obtained with sowing sugar beet on both sides of ridges, 70 cm width and 25 cm between plants (114240 plants ha-1). Nitrogen levels had significant effects on all estimated characters in both seasons. Adding 250 Kg N ha-1 produced the highest values of length, diameter and fresh weight of roots, foliage fresh weight as well as root, top and sugar yields ha-1. Split application of nitrogen into four equal portions (45, 60, 75 and 90 days after planting) was associated with the highest values of length, diameter and fresh weight of roots, foliage fresh weight, purity percentage as well as root, top and sugar yields ha-1. In general, it can be concluded that sowing sugar beets on first of October on both sides of ridges, 70 cm width and 25 cm apart (114240 plants ha-1) and the addition of 250 Kg N ha-1 into four equal portions (45, 60, 75 and 90 days after planting) was the best treatment for maximizing sugar beet productivity in the newly reclaimed sandy soils under the environmental conditions of the present study.
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