Physiological and Nutritional Evaluation of the Application of Phosphite as a Phosphorus Source in Cucumber Plants

Abstract

The aim of this study was to determine how different phosphite and phosphate rates applied together affect the growth and morphology parameters in cucumber plants as well as to characterize the nutritional and physiological state of phosphorus (P). Different foliar application rates of phosphite were applied to analyze subsequent biomass production, the relative growth rate, morphological parameters, P bioindicators, P forms, and P-use efficiency. The data suggest that the application of phosphite as a P fertilizer at a rate of ≥0.5 mM would be an appropriate and effective strategy under suboptimal conditions of phosphate in the growth medium, represented by 0.5 mM in our work, as it improved the growth parameters, number of flowers, leaf area, nutritional state of P, incorporation of P in structural organs, and P-use efficiency by the plant. The results indicate that the validity of the foliar use of phosphite as a P fertilizer in cucumber plants was subject to phosphate availability in the culture medium.

Effect of Applying Potassium Phosphite with Potassium Fulvate on Plant Growth

“…Phosphorous is bonded with three oxygen atoms to form Phi molecule, These three O atoms in the phi molecule give this anion increased mobility in the whole plant tissues, also phi is easily absorbed and transported through both the xylem and the phloem to all areas of the plant because of its high solubility, Non-biological oxidation of Phi to Pi gradually in plant (McDonald et al, 2001;Gómez-Merino and Trejo-Téllez, 2016). The finding of the present study is in agreement with Glinicki et al, (2010); Tambascio et al, (2014); Constán-Aguilar et al, (2014) who found that phi-containing products stimulated the parameters of growth, leaf area, fresh and dry weight when adding under sufficient conditions for P in the medium of growth. Also, these results are in harmony with the finding of Sharaf El-Dine et al, (2011); Suh et al, (2014); Esringü et al, (2015); Taha et al, (2016); Abdel-Baky et al, (2019) who found that fulvic acid increased all parameters of plant growth.…”

“…With foliar application, the highest values of N, P and K % were (4.01, 0.7 and 5.74 %, respectively) that were achieved using the combined treatment of potassium phosphite with potassium fulvate at C2 (0.05 ml plant -1 + 3 kg fed -1 ), followed by (3.94, 0.65 and 5.34 %, respectively) with potassium fulvate as a single treatment at C3 (9 kg fed -1 ), and (4.00, 0.64 and 5.06 %) with potassium phosphite as a single treatment at C3 (0.2 mm plant -1 ). The finding of the present study is in accordance with Constán-Aguilar et al, (2014);Estrada-ortiz et al, (2016); Zambrosi (2016) and Zambrosi et al, (2017) who found that Phi had a significant effect on nutrient status of plants under Pi-sufficient supply. These results are also consistent with the results of Khalil et al ., (2011); Wright and Lenssen, (2013); Samavat and Samavat, (2014); Taha et al, (2016); Diab et al, (2017); who found that fulvic acid significantly increased nutrients concentration (%).…”

“…et al, (2014);Constán-Aguilar et al, (2014);Estrada-ortiz et al, (2016); Zambrosi, (2016);Zambrosi et al, (2017) who found that phicontaining products stimulated the traits and nutrient status of plants under Pi-sufficient supply. Also, these results are in harmony with the finding of Sharaf El-Dine et al, (2011);Khalil et al ., (2011);Suh et al, (2014);Samavat and Samavat, (2014);Esringü et al, (2015);Taha et al, (2016);Diab et al, (2017); Abdel-Baky et al,…”

High phosphorus at seedling stage decreases the post-transplanting fertiliser requirement of cucumber (Cucumis sativus L.)

“…The mode of high P application at seedling stage Conditions promoting early root growth, including P fertilization, are important for good yields (Hodge et al, 2009). Some practices to improve the root growth have been explored, including the application of nutrients, plant growth promoting rhizobacteria, arbuscular mycorrihizal fungi, and hormones; improving soil structure; and soil water management (Drost, 2008;Hodge et al, 2009;Tracy et al, 2010;Constán-Aguilar et al, 2014). Drost (2008) reported that a single early application of P significantly improved asparagus establishment and subsequent productivity.…”

Fertigation: Nutrition, Stimulation and Bioprotection of the Root in High Performance

“…The application of KPhi before infection by pathogens efficiently activates the antioxidant system and eliminates the reactive oxygen species [80]. There was an increase in the flower number, foliar area, and P concentration in cucumbers [81]. Recently, innovative and promising research has been carried out on cotton plants.…”