Impacts of Effective Microorganisms, Compost Tea, Fulvic Acid, Yeast Extract, and Foliar Spray with Seaweed Extract on Sweet Pepper Plants under Greenhouse Conditions

Abstract

Sweet pepperincludes several vitamins and is regarded as a great source of bioactive nutrients, such as carotenoids and phenolic compounds, for human growth and activities. This work aimed to investigate the effects of the soil addition of growth stimulants, namely, effective microorganisms (EM), compost tea, fulvic acid, and yeast extract, and foliar applications of seaweed extract, on the vegetative growth, enzyme activity, phytohormones content, chemical constituents of plant foliage, fruit yield, and fruit quality of sweet pepper plants (Capsicum annuumL. cv. Zidenka) growing under greenhouse conditions. The results showed that the tallest plant, largest leaf area/plant, and heaviest plant fresh and dry weights were recorded after combining a soil addition of yeast extract and foliar spray with seaweed extracts at 3 g/L in two growing seasons. The highest number of fruit/plant, fruit yield/m2, fruit values of vitamin C (VC), total sugars, total soluble solids (TSS), and carotenoids, along with the highest leaf of cytokines, P, K, Fe, and total carbohydrates values, were obtained using a soil addition of fulvic acid and spray with seaweed extract at 3 g/L in the two seasons of study. These treatments also provided the lowest abscisic acid, peroxidase, and super oxidase dismutase values in the same conditions. Sweet pepper plants supplemented with compost tea and seaweed extract foliar spray at 3 g/L were the most promising for inducing the highest values of fruit fresh and dry weights, fruit length and diameter, and the leavesrichest in N, Zn, and Mn; inversely, it induced the lowest catalase levels in both seasons. The applications of EM, yeast extract, and seaweed extract could be applied for high growth, mineral levels, enzymatic activity, fruit yield, and nutritional value of sweet pepper fruit and minimizing environmental pollution.

Date-Palm Compost as Soilless Substrate Improves Plant Growth, Photosynthesis, Yield and Phytochemical Quality of Greenhouse Melon (Cucumis melo L.)

“…The organic substrates can develop microorganisms promoting plant growth. These benefit microorganisms-mediated mechanisms include modifications in the content of plant hormones (e.g., auxin, cytokinin, and gibberellin) and improvement in plant water status by increasing hydraulic conductivity [38,39].…”

“…The range of drainage fraction measured was from 20 to 40% during the experimental period. Melon plants were supplied with the following nutrient solution (in ppm): NO 3 -N (150-175), NH 4 -N (20-25), P (30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), K (250-300), Ca (150-180), Mg (40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55), SO4 (50-60), Fe (2.5-3), Mn (0.8-1.0), Cu (0.3-0.4), Zn (0.3-0.4), B (0.3-0.4) and Mo (0.05-0.08). The pH and EC of the nutrient solution were maintained within a range of 6.0-6.5 and 1.5-2.5 dS m −1 , respectively.…”

Analysis of the potential of effective microorganisms in plant production

“…According to Mohamed et al (2021), the application of EM as an additive to sweet bell pepper cultivation through foliar applications enhanced sweet bell pepper development traits and biochemical components (mineral elements and some biocomponents).…”

Active Bionanocomposite Coating Quality Assessments of Some Cucumber Properties with Some Diverse Applications during Storage Condition by Chitosan, Nano Titanium Oxide Crystals, and Sodium Tripolyphosphate

“…The color parameters of cucumber samples were evaluated by using the Miniscan XE Plus (Hunter & Associates Laboratory, Hunter Lab, Reston, VA, USA) spectrophotometer that provided changes in L*, a*, and b* color space values [25,26]. The reflectance spectra were carried out in triplicate for three equatorial opposite sides of the cucumber surfaces (n = 9), then the final average of L*, a*, and b* values were obtained for each treatment every 7 days.…”