Rhizoctonia solani and Didymella applanata impact on potato and red raspberry managed by Bacillus velezensis strains
Stem canker and black scurf caused by Rhizoctonia solani are the important diseases in potato, while spur blight caused by Didymella applanata is a major disease in red raspberry. Bacillus velezensis strains significantly stimulated plant growth of potato, which contributed to the plant productivity on both cultivars. The BZR 336 g strain affected the potato productivity more than the BZR 517 strain. Under the influence of both bacterial strains, raspberry yield was significantly higher compared to the control on the susceptible cultivar. B. velezensis strains had
Biological control of anthracnose disease (Colletotrichum acutatum) by crude leaf extract of fig
Fig (Ficus septica Brum.f.) leaf extract has bioactive compounds with antifungal properties due to alkaloid and phenolic compounds. Colletotrichum acutatum is a plant pathogen, which causes the most destructive fungal disease (called anthracnose) in the Solanaceae family, and is triggered by post-bloom fruit drop. The fungus C. acutatum is also the causal agent of the anthracnose disease of chili peppers. Experiments were conducted to measure antifungal activity as well as diffusion to identify the mode of action of fig leaf extract, including a control treatment using sterile distilled water. The minimum concentration inhibition (MIC) to inhibit
Plant nutrient and disease management control by bioformulation of Spent Mushroom Substrate (SMS) and Trichoderma asperellum
Paddy straw (PS) based silica (Si) rich Spent Mushroom Substrate (SMS) of Pleurotus ostreatus for Plant Nutrient and Disease Management in wilt (caused by F. oxysporum f. sp. lycopersici) susceptible tomato plant. Raw PS and SMS generated by P. ostreatus cultivated on PS only, and PS amended with 5% soybean cake (SC) were bio-fortified with Trichoderma asperellum (TA). SMS (PS+ 5% SC) was found supporting the growth of T. asperellum to an extent of 12.37 × 1013 conidia/g substrate. Bioformulations were developed employing Press Mud (PM) and
Trichoderma spp. combination with fatty acid mixtures influence biocontrol activity, growth promotion yield nutritional quality of tomato and lettuce plant species
This research aimed at developing new biological formulations based on the combination of small microbial consortia containing two Trichoderma spp., with a medium–long chain fatty acids mixture (FAm). The bioactivity of these formulations was investigated on different vegetable crops in terms of biocontrol, growth promotion, yield and quality improvements. FAm application reduced Botrytis cinerea necrosis by up to 90% compared to the infected control plants and some of the assayed Trichoderma spp. + FAm combinations
The current study aimed to determine the chemical compositions of ginger extract (GE) and to assess the antibacterial activities of GE against the ginger bacterial wilt pathogen Ralstonia solanacearum and to screen their mechanisms of action. The minimum inhibitory concentration and minimum bactericidal concentration of R. solanacearum were 3.91 and 125mg/ml, respectively. The cell membrane permeability and integrity of R. solanacearum were destroyed by GE, resulting in cell content leakage, such as electrolytes, nucleic acids, proteins, extracellular adenosine triphosphate and exopoly saccharides. Further
Biostimulation effects of rosemary essential oil on growth and nutrient uptake
In this study, effects of two concentrations of rosemary essential oil was evaluated on growth characteristics and nutrient uptake of tomato seedlings in a relatively lime soil and under greenhouse conditions. Treatments were foliar spray of 500 or 1000 ppm oil, soil application of 500 μL oil/kg soil, and a no application control. The results indicate that rosemary oil has beneficial effects on nutrient uptake of tomato seedlings toward a better growth quality.
Application of Moroccan seaweed-based biostimulants
This study assessed the effect of polysaccharide-enriched extracts (PEEs) derived from six Moroccan seaweeds on tomato growth, yield, and fruit quality. PPEs were applied to tomato plants as soil drench in a greenhouse experiment. The obtained results showed that all PEEs improved the growth, yield, and fruit quality of treated tomato plants. According to principal component analysis, the presence of SO4, galactose, glucose, and maltose in the characterized polysaccharides was closely associated with their effect on plant growth, yield, and fruit
Ascophyllum nodosum extract act as a biostimulants in tomato plants
Biostimulants are an emerging category of crop management products which can enhance crop productivity under abiotic stress conditions. The ability of some biostimulant products such as Ascophyllum nodosum extracts (ANE) to enhance the tolerance of crops to drought stress has been observed by growers. The objective of this study was to investigate if different commercial ANE biostimulants provided the same tolerance to tomato plants (cv. Moneymaker) subjected to a defined drought period. A compositional characterisation of the
Influences of Air, Oxygen, Nitrogen, and Carbon dioxide Nanobubbles on Seeds Germination and Plants Growth
Nanobubbles (NBs) hold promise in green and sustainable engineering applications in diverse fields (e.g., water/wastewater treatment, food processing, medical applications, and agriculture). This study investigated the effects of four types of NBs on seed germination and plant growth. Air, oxygen, nitrogen, and carbon dioxide NBs were generated and dispersed in tap water. Different plants including lettuce, carrot, fava bean, and tomato were used in germination and growth tests. The seeds in water
