Amala K paul, Akshara R, Arunachalam G, Lavanya K, Samson S. Agriculture Soil Testing And Nutrient Spraying Machine- An Inference With Esp-32 Wroom Microcontroller. kuey [Internet]. 2024 Sep. 24 [cited 2025 Sep. 16];30(9):877-88. Available from: https://www.kuey.net/index.php/kuey/article/view/9657