A.M., A., A.M., A., A.E., A. (2015). Effect of Kaolin and Fulvic Acid Antitranspirants on Tomato Plants Grown under Different Water Regimes. test, 36(April-June), 169-179. doi: 10.21608/asejaiqjsae.2015.2875
Aggag, A.M.; Alzoheiry, A.M.; Abdallah, A.E.. "Effect of Kaolin and Fulvic Acid Antitranspirants on Tomato Plants Grown under Different Water Regimes". test, 36, April-June, 2015, 169-179. doi: 10.21608/asejaiqjsae.2015.2875
A.M., A., A.M., A., A.E., A. (2015). 'Effect of Kaolin and Fulvic Acid Antitranspirants on Tomato Plants Grown under Different Water Regimes', test, 36(April-June), pp. 169-179. doi: 10.21608/asejaiqjsae.2015.2875
A.M., A., A.M., A., A.E., A. Effect of Kaolin and Fulvic Acid Antitranspirants on Tomato Plants Grown under Different Water Regimes. test, 2015; 36(April-June): 169-179. doi: 10.21608/asejaiqjsae.2015.2875

Effect of Kaolin and Fulvic Acid Antitranspirants on Tomato Plants Grown under Different Water Regimes

Alexandria Science Exchange Journal
Article 9, Volume 36, April-June - Serial Number 2, June 2015, Pages 169-179    PDF (1.9 M)
Document Type: Original Article
DOI: 10.21608/asejaiqjsae.2015.2875
Authors
Aggag, A.M.* ; Alzoheiry, A.M.* ; Abdallah, A.E.*
Dept. Natu. Res. & Agric. Eng., Fac. Agric., Damanhour Univ. (www.damanhour.edu.eg)
Abstract
This study was carried out to evaluate effects of kaolin (KA) and fulvic acid (FA) as antitranspirants (ATs) on relative water content (RWC) of leaves, net CO2 assimilation rate (CO2 AR), yield, fruit quality and irrigation water use efficiency (IWUE) of tomato plants (Solanum lycopersicum L.). The plants were grown under three water regimes based upon crop daily water consumptive use (ETc). These regimes included 100%ETc, 75%ETc and 50%ETc. Field experiments were achieved for two successive seasons 2012 and 2013 under drip irrigation system in sandy soil at El-Bostan, El-Beheira Province, Egypt. The results revealed that both ATs enhanced effectively the physiological activities and yield production of tomato plants, particularly at water regime of 75% ETc, but they did not compensate the negative effects caused by sever water regime of 50% ETc. FA antitranspirant was more effective than KA. Under water regime of 75%ETc, application of 1.5 FA ml L-1 at 21-day intervals increased IWUE by 34.82% compared to untreated plants. Foliar spray by FA reduces the values of crop response factor than KA in the two seasons. These led to conserving soil water and thereby reduce the applied water by 25% of irrigation water. In comparison to untreated FA plants, the FA (75%ETc) led to decreases in the yield to 93.4% of that irrigated at 100%ETc. There were no significant differences in the fruit quality (titratable acidity and vitamin C) between both ATs treatments.
Keywords
water use efficiency; kaolin; Fulvic acid; irrigation regimes; fruit quality
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