RESPONSE OF SOME SUGAR BEET VARIETIES TO THE INTEGRATED SOIL AND FOLIAR APPLICATION OF POTASSIUM IN SALINE SOIL | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 12, Volume 28, Issue 2, July 2014, Page 155-170 PDF (820.08 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2014.193707 | ||||
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| Authors | ||||
| E.F.A. ALY1; EMAN M. ABDEL FATAH2; SOHA R. A. KHALIL3 | ||||
| 1Var. Mainten. Res. Dept., | ||||
| 2Physiol. and Chem. Res. Dept. | ||||
| 3Sugar Technol. Dept. Res. Sugar Crops Res. Inst., Agric. Res. Center, Giza 12619, Egypt | ||||
| Abstract | ||||
| Two field experiments were carried out at Gelbana district, Sahl El-Tina (longitudes 32º 20' and 32º 33' E and latitudes 30º 57' and 31º 04' N), North Sinai Governorate during the two seasons of 2011/2012 and 2012/2013 to study the effect of the combined application of potassium fertilizer on some chemical compositions, growth, yield and quality of sugar beet under saline soil. This work included eighteen treatments represent the combinations among three multi-germ sugar beet varieties viz. Gloria, Toro and Desperez poly N and six Kcombinations, which were: 1) The check treatment (without K application). 2) 3 cm3 l-1 as potassium silicate as foliar application, 3) 24 kg K2O fed-1 as potassium sulphate as soil application. 4) 48 kg K2O fed-1 as potassium sulphate as soil application. 5) 24 kg K2O fed-1 as potassium sulphate + 3 cm3 l-1 potassium silicate. 6) 48 kg K2O fed-1 as potassium sulphate + 3 cm3 l-1 potassium silicate. A split plot design was used with three replications in both seasons, the main plots were assigned to K-fertilization treatments, while sugar beet varieties were sown randomly in the sub plots. The obtained results pointed out the following. The applied potassium treatments either soil or foliar application alleviated the adverse effect of soil salinity and significantly increased chlorophyll a, b and carotenoides, root length, diameter and fresh weight/plant, sucrose%, sugar extracted%, quality index as well as root and recoverable sugar yields/fed and reduced Na root content, while increased K/Na ratio in root in comparison to the control, in both seasons. The application of K-fertilizer at 24 and/or 48 kg K2O fed-1 as soil side dressing of K-sulphate, along with the foliar application of K-silicate at 3 cm3 l-1 were more effective and significantly increased root yield (ton fed-1) by (8.19 and 10.24 %), and sugar yield by (8.83 and 13.85%) compared to the soil single application in the 1st season and the 2nd one was the same trend. Supplying sugar beets by 48 kg K2O fed-1 as form of K-sulphate, given as soil application, combined with foliar application of 3 cm3 l-1, as K-silicate, significantly increased quality index and sucrose% and reduced impurity index in both seasons compared to the soil single application. Gloria variety showed the superiority over the other tested ones and recorded the highest values of chlorophyll a, b, proline, the thickest and heaviest roots/plant, root and recoverable sugar yields/fed., sucrose%, sugar extraction% in both seasons and K/Na ratio in the 2nd one. Fertilizing Gloria sugar beet variety with 48 kg K2O fed-1 as K-sulphate added to the soil integrated with 3 cm3 l-1 of K-silicate sprayed on beet foliage can be recommended to get the highest root yield/fed and sucrose% and the lowest content of sodium in juice in Sahl El-Tina, North Sinai. | ||||
| Keywords | ||||
| Potassium silicate; potassium sulphatee; quality; salinity; sugar beet; varieties and yield | ||||
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