Akademik Veri Yönetim Sistemi
Communications in Soil Science and Plant Analysis, 2024 (SCI-Expanded)
A two-season experiment to identify an efficient strategy for the optimized soil microbial activity using biochar from four agricultural residues subjected to two different pyrolyzing temperatures (300°C and 500°C) was conducted in greenhouse conditions. The biochar types were identified according to the final pyrolyzing temperature as vineyard pruning biochar-300°C (VB300), vineyard pruning biochar-500°C (VB500), tomato biochar-300°C (TB300), tomato biochar-500°C (TB500), clove biochar-300°C (CB300), clove biochar-500°C (CB500), banana biochar-300°C (BB300) and banana biochar-500°C (BB500). The experimental design consisted of a randomized complete block design with five replications and 9 treatments including the control with a total of 45 pots. Soil samples were taken after biochar applications at two-week intervals (0, 2nd, 4th, 6th and 8th week) during the growth period of lettuce (Lactuca sativa var. Crispa) and analyzed for chemical (pH and EC) and biological parameters (urease, alkaline phosphatase, β-glucosidase, dehydrogenase, nitrification, denitrification activities and bacterial count). Biochar applications were found to have an impact on enzyme activities in various degrees. Selected biochar treatments increased pH, EC, urease, alkaline phosphatase, β-glucosidase and nitrification activities but not the bacterial count in the first growing period. However, no significant difference was found among treatments in the second growing period (except β-glucosidase). Overall evaluation of the data suggested that, under the experimental conditions, feedstock type, rather than pyrolyzing temperature, appeared to be more influential on the biological parameters monitored and banana biochar was found to be the most effective one in the short term.