Hassanin,, M., Elayan, S. (2000). EFFECT OF PHOSPHORUS AND NITROGEN RATES AND TIME OF NITROGEN APPLICATION ON YIELD AND JUICE QUALITY OF SUGAR BEET. Journal of Plant Production, 25(12), 7389-7398. doi: 10.21608/jpp.2000.260240
M. A. Hassanin,; Sohair E. D. Elayan. "EFFECT OF PHOSPHORUS AND NITROGEN RATES AND TIME OF NITROGEN APPLICATION ON YIELD AND JUICE QUALITY OF SUGAR BEET". Journal of Plant Production, 25, 12, 2000, 7389-7398. doi: 10.21608/jpp.2000.260240
Hassanin,, M., Elayan, S. (2000). 'EFFECT OF PHOSPHORUS AND NITROGEN RATES AND TIME OF NITROGEN APPLICATION ON YIELD AND JUICE QUALITY OF SUGAR BEET', Journal of Plant Production, 25(12), pp. 7389-7398. doi: 10.21608/jpp.2000.260240
Hassanin,, M., Elayan, S. EFFECT OF PHOSPHORUS AND NITROGEN RATES AND TIME OF NITROGEN APPLICATION ON YIELD AND JUICE QUALITY OF SUGAR BEET. Journal of Plant Production, 2000; 25(12): 7389-7398. doi: 10.21608/jpp.2000.260240
EFFECT OF PHOSPHORUS AND NITROGEN RATES AND TIME OF NITROGEN APPLICATION ON YIELD AND JUICE QUALITY OF SUGAR BEET
Yield response of sugar beet to P rates (30 and 45 kg P2O5 /fed), N rates (60 and 90 kg N/fed) and timing of N application viz., all amount 0f N at sowing, split application in two equal doses, at sowing and at thinning or in three equal doses 1/3 at sowing + 1/3 at thinning + 1/3 one month after thinning. The main results obtained from this study revealed that:
- Application of 45 kg P2O5 /fed increased root size, in terms of length and diameter as well as root weight and produced the highest yield of roots, sugar and tops /fed, while juice quality traits (TSS, sucrose and purity %) were not affected by P rates.
- Increasing N rate up to 90 kg N/fed improved size and weight of the individual root and increased root yield by 3.4 tons, sugar yield by 460 kg and top yield by 1.41 ton/fed. On the other hand, higher N rate depressed beet quality.
- Split application of N in three equal doses improved size and weight of individual root and produced the highest yield of roots, sugar and tops/fed, while juice quality traits, in terms of sucrose and purity % were not affected by timing of N application.
- The interaction between P and N rates was significant with respect to root diameter, root weight and root yield/fed.
- The interaction between N rates and times of N application was significant with respect to length and weight of the root, TSS and top yield.
- The second order interaction had a significant effect on root weight.
The highest yields of roots and sugar /fed resulted from 45 kg P2O5 /fed + 90 kg N/fed applied in three equal doses 1/3 at sowing + 1/3 at thinning + 1/3 one month after thinning.
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