Research entitled The Effect of Coconut Shell Biochar and Cow Manure on the Growth and Production of Cucumbers (Cucumis sativus L.) on Red and Yellow Podzolic Soil. Research was carried out at the Cold Water Experimental Garden, Faculty of Agriculture, Riau Islamic University, Pekanbaru City for 3 months starting from May to July 2023. The aim of this research was to determine the main and inte…
Research that has been carried out with the aim of knowing the interaction effect and the main coconut shell biochar and NPKMg 15:15:6:4 on the growth of hybrid areca nut (Areca catechu L.) seedlings on yellow red podsolik planting media. The research was conducted at the Experimental Garden of the Faculty of Agriculture, Riau Islamic University, Air Dingin Street, Air Dingin Village, Bukit Ray…