Analysis of RAZORMIN® as a Biostimulant and Its Effect on the Phytotoxicity Mitigation Caused by Fungicide Azoxystrobin in Pepper

Abstract

Use of biostimulants for stimulating plant growth and mitigating the negative impacts of biotic and abiotic stresses is a promising strategy to achieve higher crop yields. Fungicides such as azoxystrobin are used to control several pests and fungal diseases in plants but at the cost of altering various physiological processes; thereby, leading to reduced crop yields. The efficiency of the compound RAZORMIN® as a biostimulant product while taking into account its role in plant growth stimulation and fungicide azoxystrobin stress mitigation was evaluated in this study. The efficacy of RAZORMIN® was assessed considering its impact on the stimulation of growth-related physiological processes and stress mitigation mechanism, e.g., reactive oxygen species (ROS) detoxification. Application of RAZORMIN® significantly increased plant growth by improving fresh weight, photosynthetic efficiency, net photosynthesis rate, gas exchange, nitrogen (N) metabolism (with increases in soluble amino acids, foliar N concentration, and N use efficiency), growth hormone concentrations (mainly gibberellins and cytokinins), nutritional status of plants (producing a greater accumulation of phosphorus, potassium, calcium, magnesium, sulfur, zinc, molybdenum, iron, and boron), and sugars concentration. Furthermore, the application of RAZORMIN® on plants under fungicide azoxystrobin stress demonstrated its anti-stress and protective role by stimulating the antioxidant defense system and improving photosynthetic efficiency.

Determination of Antibacterial Potency of Different Chemicals Towards Bacterial Canker of Tomato Caused by Clavibacter Michiganensis Subsp. Michiganensis.

“…Chitinases play important role in the production of carbon and nitrogen. It increases the plant growth by improving nitrogen metabolism, sugar content, fresh weight and photosynthetic activity (Ahmad et al, 2022). Current study is supported by Kolomiiets et al (2017a) who used pyraclostrobin against Cmm and P. syringae pv.…”

Application of a Protein Hydrolysate-Based Biostimulant Obtained from Slaughterhouse Sludge on Pepper Crops

“…These findings agree with those obtained by Ávila-Pozo et al [5], who examined the effects of applying the same biostimulant (also through root and foliar application) to tomato crops. Para diković et al [6,18] and Ahmad et al [11] also observed elevated concentrations of photosynthetic pigments in pepper plants treated with various biostimulants composed of amino acids and organic matter. These authors suggest that the increased content of photosynthetic pigments is a result of enhanced nitrogen (N) absorption by the plant.…”

“…In our experiment, the application of the biostimulant notably improved the mineral nutrition of bell pepper crops. Adequate crop mineral nutrition is essential for optimal plant growth and development [11]. Both macro-and micronutrients play essential roles in regulating various physiological processes and facilitating metabolic reactions, including photosynthesis and nitrogen assimilation, while also serving as precursors or activators of various enzyme systems [11,31,32].…”

“…According to Ahmad et al [11], the positive effects of biostimulants composed of a mixture of amino acids and peptides are attributed to their role in the biosynthesis of non-protein nitrogenous compounds (such as purines and pyrimidine bases, coenzymes, vitamins, and pigments). This impact influences the mineral nutrition of plants and, consequently, their growth and development.…”