Abstract:
Naturally there are a lot of factors affecting on plant growth, such as water, light, temperature, nutrient and soil condition, etc, Different pH level and improper soil condition also affect on plant growth and plant production. Most of the previous research, involving in growing plants in different pH level of soil, was aimed to investigate the appropriate soil pH for plant growth. This research is concentrated on soybean growth in responding to the range of pH 4 8. Height and total seed weight is used as the data to crate a mathematical model for predicting soy bean growth and neural networks model for predicting the production.