Effect of time of irrigation on the distribution of 1,2‐dibromo‐3‐chloropropane in soil after shallow injection

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Abstract
The effect of irrigation time on the dispersion of 1,2‐dibromo‐3‐chloroproparie (DBCP) in soil after a shallow injection treatment was determined for Yolo fine sandy loam. When injections equivalent to 23.5 litres of DBCP/ha at a depth of 7 to 8 cm were subsequently followed by 15 cm of irrigation water, adequate distribution of DBCP was obtained if the soil was irrigated within 5 days. However, the most rapid and deepest penetration of fumigant was obtained by irrigating 2 to 5 days after application. There was insufficient downward movement of DBCP in non‐irrigated soil.

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