Effect of methanol spraying and seed inoculation with Azospirillumlipoferum on sugar beet performance under deferent regimes of irrigation

Abstract

The field study was carried out to evaluate the effects methanol concentrations and seed inoculation with Azospirillum in water stress conditions. Experiment was conducted using a randomized complete block design with a split-plot arrangement of treatments and four replications. The first treatment factor was two levels of water stress (based on 40 and 70% depletion of available soil moisture)as the main plots. The second treatment factor was methanol concentrations at three levels (0, 14 and 28 % (v/v) methanol) andthe third treatment factor was the absence and presence of seed inoculation with Azospirillumlipoferum Stain 21 bacteriaas subplots.RY(Root Yield), SC(Sugar content), SY(Sugar Yield), WSY(White Sugar Yield), Na, K and N contents,WSC, molasses sugar, alkalite were verified. Results showed a significant different between different concentrations of methanol on RY, SC, SY, WSY, and N contents. The greatest RY (60.01 ton ha -1 ) was observed in plots with 28 % (v/v) methanol spraying. The maximum WSY was found in 28 % (v/v) methanol treatment, followed by 14 % (v/v) methanol spraying (6.97 and 6.46 ton ha-1, respectively). Results also indicated that RY, SC, SY, WSY, Na, N contents, molasses sugar and alkalite were influenced by different levels of irrigation. Normal irrigation had a higher RY than deficit irrigation, 60.63 vs. 47.64 ton ha -1 . Furthermore, WSY was