El-Mansoub, M., Mohamed, H. (2014). EFFECT OF SOWING DATES AND PHOSPHORUS FERTILIZER ON ROOT ROT AND QUALITY OF SOME SUGAR BEET VARIETIES. Journal of Plant Production, 5(5), 745-764. doi: 10.21608/jpp.2014.53900
M. M. A. El-Mansoub; Hanan Y. Mohamed. "EFFECT OF SOWING DATES AND PHOSPHORUS FERTILIZER ON ROOT ROT AND QUALITY OF SOME SUGAR BEET VARIETIES". Journal of Plant Production, 5, 5, 2014, 745-764. doi: 10.21608/jpp.2014.53900
El-Mansoub, M., Mohamed, H. (2014). 'EFFECT OF SOWING DATES AND PHOSPHORUS FERTILIZER ON ROOT ROT AND QUALITY OF SOME SUGAR BEET VARIETIES', Journal of Plant Production, 5(5), pp. 745-764. doi: 10.21608/jpp.2014.53900
El-Mansoub, M., Mohamed, H. EFFECT OF SOWING DATES AND PHOSPHORUS FERTILIZER ON ROOT ROT AND QUALITY OF SOME SUGAR BEET VARIETIES. Journal of Plant Production, 2014; 5(5): 745-764. doi: 10.21608/jpp.2014.53900
EFFECT OF SOWING DATES AND PHOSPHORUS FERTILIZER ON ROOT ROT AND QUALITY OF SOME SUGAR BEET VARIETIES
Sugar Crops Res. Inst., Agric. Res. Center, Giza, Egypt.
Abstract
The present investigation was carried out at the experimental farm of Malawi Agricultural Research Station, El-Minia Governorate, Egypt during 2009/2010 and 2010/2011 seasons to investigate the effect of sowing dates (15th October, 30th October and 15th November) and phosphorus fertilizer (0, 15 and 30) kg P2O5 /fed on root rot disease incidence, yield and its quality of three sugar beet varieties i.e. Farida, Kawemira and Montibianco. A split-split plot design with three replications was used, sowing dates were allocated in the main plots, phosphorus fertilizer was assigned in the sub plots while, sugar beet varieties were distributed in the sub- sub plots.
The results revealed that sowing date15th October significantly reduced root rot disease incidence and increased all quality parameters, i.e. sucrose ,sex, Na, K, alpha amino N,SLM and extractability percentages except purity % as well as productivity traits (top and root yields ) in the two growing seasons. The above varieties of sugar beet significantly differed in all studies traits in the two growing seasons. Phosphorus fertilizer significantly effected on all studies traits in both seasons, except sugar yield and (root yield and root fresh weight ) in the first season only. Planting Kawemira sugar beet variety when received 30 kg P2O5 / fed in 15th October significantly increased yields of root and top (ton/fed) in the second season.
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