Synergy of biochar and biofertilizers to improve bell pepper fruit biochemical quality with increased soil carbon, Azospirillum population and mycorrhization
2024
Samyukta , S M S | Viji, M M | Manju, R V | Anith , K N | Nisha, S K | Beena , R
Sustainable crop production depends more on maintaining good soil health. Biochar significantly improves the soil's physical, chemical, biological and nutritional properties while aiding in carbon sequestration. Biofertilizers, which promote nutrient cycling, heavy metal chelation and the production of plant growth substances are crucial to sustainable agriculture. While the individual benefits of biochar and biofertilizers are well-documented, their combined effect in vegetable farming is less studied. The synergistic application of biochar and biofertilizers can improve soil health and nutrient dynamics, enhancing crops' biochemical properties. In a pot culture experiment, California Wonder bell peppers were treated with biochar and biofertilizers, including Azospirillum, Vesicular Arbuscular Mycorrhiza (VAM), and Serendipita indica. These were applied directly to the soil during transplanting. Results showed that plants treated with biochar + Azospirillum had higher flavonoid, total soluble protein and ascorbic acid content. Biochar + VAM treatment resulted in higher polyphenol content, total dry matter and root volume. S. indica reduced the vegetative period and induced earlier flowering. Biochar also increased soil organic carbon (2.89 %), improved the rhizosphere Azospirillum population and enhanced fungal endophytes' root colonization. Combining biochar and biofertilizer improves bell pepper plant performance, enhances biochemical parameters and improves soil health.
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