Sosa, et al (2024) Lactuca sativa Growth and Yield as Affected by Cashew Nut Shells BiocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More, Cattle Manure and Urea in Northern and Central Benin. International Journal of Plant & Soil Science. https://doi.org/10.9734/ijpss/2024/v36i94999

A study conducted in North and Central Benin explored the effects of using cashew nut shell biochar, cattle manure, and urea on the growth and yield of lettuce (Lactuca sativa). With rising concerns about excessive mineral fertilization depleting soil fertility, this research aimed to identify sustainable practices using local organic resources to boost vegetable production.

The study used a Fisher experimental design, testing various combinations of biochar, manure, and urea across two sites. Results showed that integrating biochar with cattle manure and urea significantly improved plant growth and yields. The best results were achieved with treatments combining 10 t/ha biochar, 20 t/ha manure, and a reduced amount of urea, yielding up to 318% higher lettuce production compared to traditional mineral fertilization.

The application of biochar not only enhanced soil nutrient retention but also increased the number of leaves and plant height, demonstrating its potential as a soil amendmentA soil amendment is any material added to the soil to enhance its physical or chemical properties, improving its suitability for plant growth. Biochar is considered a soil amendment as it can improve soil structure, water retention, nutrient availability, and microbial activity.   More. This combination reduced the need for mineral fertilizers, offering a sustainable alternative for lettuce farmers in Benin.

These findings underscore the importance of promoting biochar use, particularly from cashew shells, which are abundant in the region. Further research is encouraged to optimize the use of biochar and explore its broader impact on soil health and other crops in Benin.