Effect of Spraying Algae Extract and Potassium Nitrate on the Yield and Fruit Quality of Barhee Date Palms

Abstract

The effect of foliar spray with algae extract and/or potassium nitrate on the quantity and quality of Barhee date palm yields was investigated during the 2017 and 2018 seasons. Inflorescences of Barhee date palms were sprayed twice, after pollination (1st April of each season) and one month later, with algae extract at concentrations of 0.5% and 1.0% and with potassium nitrate at concentrations of 1% and 2% applied individually or in combinations. The obtained results showed that all of the sprayed treatments enhanced the yield and fruit properties when compared to the controls. Spraying inflorescences of Barhee date palms with algae extract and/or potassium nitrate had a significant effect on the yield and on the physical and chemical properties of the fruit when compared with the untreated palms. The increase in yield and qualitative properties was associated with increasing concentrations of both materials (algae extract and potassium nitrate). The best results were detected with spray containing high rates of combined treatment (1% algae extract + 2% potassium nitrate) applied twice in both seasons studied because this treatment resulted in the highest value of fruit and bunch weight, increased the yield per palm compared to the control by about 60.2%, and improved the fruit physical properties (fruit length, fruit diameter, fruit shape index, flesh weight, and seed weight) and fruit chemical properties (total soluble solids (TSS); acidity; TSS/acid ratio; tannins; and reducing, nonreducing, and total sugars) of the Barhee date palm given the experimental conditions.

Enhancing Growth and Nutrient Uptake in Bouffegous Date Palm Variety With Seaweed Extracts and AMF/PGPR Combination in the Field.

“…Alebidi et al, 2021;Badran, 2016;Murad & Al-Dulaimy, 2021;Omar, 2017), as well as other crops like tomato, Ceropegia maculate bedd and sweet pepper plants(Ali et al, 2022;Anbazhakan et al, 2022). The observed increase in growth rate can be attributed to the noted improvements in various physiological activities, including nutrient uptake, chlorophyll content, and chlorophyll uorescence, recorded in the present study.…”

Synergistic effect of seaweed extract and boric acid and/or calcium chloride on productivity and physico-chemical properties of Valencia orange

“…Likewise, Ayub et al (2019) reported that SW applied to ‘Gala’ apple at concentrations ranging from 0.1% to 0.6% resulted in higher fruit set percentage, total fruit numbers, fruit weight, and fruit length compared to the control, with the 0.3% concentration yielding the best results. Alebidi et al (2021) reported that spraying algae on Barhee date palm enhanced the physical and chemical properties of the fruit and yielded the highest values of fruit length, fruit diameter, fruit shape index, flesh weight, seed weight, total soluble solids (TSS), acidity, TSS/acid ratio, tannins, reducing sugars, nonreducing sugars, and total sugars.…”

Synergistic Effects of Applying Potassium Nitrate Spray with Putrescine on Productivity and Fruit Quality of Mango Trees cv. Ewais

“…Among mineral nutrients, potassium element plays a great role in plants, being involved in multiple physiological and biochemical processes vital to plant growth, yield, fruit enlargement, quality, and stress, and improving fruit quality parameters i.e., total soluble solids, total sugars, and coloration [14]. Moreover, potassium is indispensable to plant life and plays an imperative role in the activation of many enzymes, the photosynthesis process, and the subsequent carbohydrate translocation and metabolism process, which eventually increases the crop yield [15,16]. In addition, application of potassium regulates many physiological processes such as translocation of solutes, transpiration, respiration, and photosynthesis, and activates nitrate reductase (NR) and starch synthetase, and these two enzymes create a balance by producing protein and carbohydrates, respectively [7,17].…”