Cassava Root Distribution Responses to Soil Moisture Levels
The objective of this study was to determine cassava root distribution responses to soil moisture levels. The experiment was conducted in a loamy clay soil to compare cassava root distribution between irrigated and non–irrigated fields. The results revealed that cassava roots distribution was highly correlated with soil moisture contents. At 1–3 months after planting, root length density (RLD) of cassava in irrigated fields was greater than under non–irrigated fields at the depth of 10–40 cm. While at the depth of 20–40 cm, RLD was slightly greater under non–irrigated fields. Under irrigation, high level of soil moisture was maintained at the soil surface (0–25 cm) which induced more roots development in this area. Without irrigation, the soil surface was dry, therefore cassava roots developed to deeper levels for more moisture condition.
Keywords - Manihot Esculenta, Drip Irrigation, Root Distribution Pattern, Root Length Density.