ALLEVIATION OF SALT-STRESS ON SUGAR BEET (BETA VULGARIS L.) USING MOLASSES, HUMIC, AND NANO-CACO3

Abstract

The impact of soil application (control (C), molasses (M) and humic acid (HA)) and foliar applicllation treatments (C, HA, M and lithovit Boron (LB)) on sugar beet (Beta vulgaris L.) growth, yield, and quality under saline conditions were studied. A field experiment was conducted in Oct. 2017 and 2018 at Tamrfayah village (3122' N, 3112' E), Kafr El-Shiekh Governorate, Egypt. Soil or foliar application treatments increased leaf area index (LAI), dry weight plant -1 , root weight, length and diameter, root yield (t/ha), gross sugar%, extractable white sugar%, juice purity%, and sugar yield (t/ha) of sugar beet compared to C. The inverse was true in K, Na, K + Na, -amino nitrogen (meq/100 g), loss sugar (%), and quality for root juice. Adding M to soil along with foliar spraying with LB produced the maximum average increase of two season at about leaf area 53.67%, dry weight 18.56%, root diameter 7.88%, root weight (g plant -1 ) 23.89%, root yield (t/ha) 29.8%, gross sugar (%) 9.29%, extractable white sugar (%) 14.97%, Juice purity (%) 4.93%, sugar yield (t/ha) 47.55 compared to C (Soil application) C (Foliar application) treatment. The highest values of K 6.84 and 7.33, Na 2.47 and 2.53, and K + Na 9.32 and 9.85 meg/100 g of sugar beet were obtained with the C (Soil application) C (Foliar application) treatment.