Irrigation scheduling and its impacts on Freesia-water productivity, vegetative and flowering parameters under greenhouse cultivation

Abdel-Fattah, I.; Attia, Enas A. S.; El-Banna, Ghada M.

doi:10.21608/jenvbs.2020.28824.1091

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Biostimulants could improve plant tolerance to mitigate drought damages and improve plant growth (Du-Jardin, 2015 andRouphael et al 2018). Water application at a rate and volume lower than the evapotranspiration throughout the whole growth period defiend as water deficit irrigation and might be used to improve plant quality by reducing excessive vigor and increasing water use efficiency (Alvarez et al 2009 andAbdel-Fattah et al 2020). Crop evapotranspiration and irrigation water applied were higher in the first seasons than second season might be due to the high temperature during the first season.…”

Section: Discussionmentioning

confidence: 99%

Onion drought tolerance enhancement in calcareous soils based on using bio-stimulants

Hefzy

Mostafa

Zahran

2020

EBSS

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T HE current investigation was aimed to investigate the influences of different irrigation regimes, bio-stimulants and their interaction on onion yield and yield components, to improve plant growth under water stress, to reduce the negative effect of water stress. A split-plot desing was used, which the main plot was irrigation treatments (100% of crop evapotranspiration, 80% ETc and 60% ETc), while the bio-stimulants (control, active dry yeast extract, potassium humate and active dry yeast extract plus potassium humate) were assigned in sub-plot. The results showed that soil application of the biostimulants reduced the negative impact of water deficit compared to control. Yeast extract followed by yeast extract plus potassium humate recorded the highest plant height, diameter of neck and bulb, shoots fresh weight, fresh weight of bulb and total yield of onion during both seasons. With decreasing the required amount of water (at 80% ETc), the reduction percentage was only 5.18% and 4.65% when plants treated with yeast extract compared to 100% ETc in the 1 st and 2 nd seasons, respectively. However, yeast extract at 80% ETc was higher in the total yield than untreated plants under 100% ETc irrigation regime by 16.37% and 16.03% during the first and second seasons. Moreover, the highest irrigation water use efficiency was recorded at an irrigation regime 80% ETc and yeast extract with no significant difference with yeast extract plus potassium humate. From obtained results, yeast extract and or yeast extract plus potassium humate could play an important role in increasing plant stress tolerance to water deficit irrigation.

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