Study on number of times for Fertigation of cassava in drip irrigation system in loamy sand at Khon Kaen Province.

Abstract

At present, in agriculture, irrigation systems have been implemented to increase yields and reduce the impact of climate change conditions. If it's possible to apply fertilizer through the irrigation system, it can improve fertilizer efficiency and enhance crop yield and quality. However, there is currently no specific recommendation for how often to apply fertilizer along with water irrigation. Therefore, an experiment was conducted using a randomized complete block design (RCB) with four replications and five treatments as 1. Apply Fertilize beside row 2. ½ rate beside the row and ½ with fertigation (1 time) 3. ½ rate beside the row and ½ with fertigation (2 time) 4. ½ rate beside the row and ½ with fertigation (3 time) 5. ½ rate beside the row and ½ with fertigation (4 time). Chemical fertilizer rate recommended rate based on soil analysis. Results indicated that applying fertilizer at half the recommended rate as a basal dressing and the other half divided into two applications through the irrigation system resulted in a high cassava yield of 8.6 tons per rai.