Effect of Humic Acid Application on Quantitative Parameters of Sugar Beet (Beta vulgaris L.) Cv. Shirin

Abstract

The present experiment aimed to investigate the influence of humic acid application on qualitative traits of sugar beet cv. 'Shirin' basis of a randomized complete block design with four replications during 2007-2008. The plants were treated with different humic acid treatments (control, 200, 300, 400, 500, and 600 kg ha-1). The nonsugar components such as potassium, sodium, aminonitrogen and some qualitative parameters for sugar processing such as alkalinity, root yield, sugar percent, recoverable sugar, and sugar content in molasses were determined according to standard methods. According to results, humic acid application enhanced sugar quality of sugar beet. The lowest value of K, Na and amino-nitrogen were observed in H300 sample (300 kg ha-1) with 3.85 meq 100 g-1 pulp, 1.22 meq 100 g-1 pulp and 1.21 meq 100 g-1 pulp, respectively. The highest recoverable sugar content (15.64%) was obtained from 300, 400, 500, and 600 kg ha-1 application. Also, the highest sugar yield resulted from 400, 500, and 600 kg ha-1 and the lowest sugar content in molasses were observed in the treatments of 200 and 300 kg ha-1 humic acid.

Novel Effects of Leonardite-Based Applications on Sugar Beet

“…Regarding the relationship between sugar beet yield traits and leonardite treatment, we did not find significant differences in the impurity content between control and treated plants unlike Rahimi et al (2020) who observed a decrease in Na, K, and α-amino N following treatment with humic acid. However, we reported higher values of sugar yield on treated plants.…”

Yield and Quality of some Sugar Beet Varieties as Affected by Humic Acid Application Rates under Sandy Soil Condition

“…These results are in agreement with those obtained by Motaghi and Nejad (2014) and Shaban et al, (2014) who reported that quality traits of sugar beet were significantly increased by increasing the rate of humic acid. Rahimi et al, (2020) indicated that humic acid application enhances quality parameters of sugar beet.…”

“…Humic acid is assumed that under sandy and saline soils, humic acid improves the growth and yield of sugar beet and increases the uptake of nutrients as a result (Rahimi et al,2020). Therefore, humic acids are commonly used as a soil supplement in agriculture.…”