South's rice and crawfish farms face invasive snails and delphacid insects

Apple snails and rice-delphacid insects have spread through parts of the U.S. South, notably Louisiana, leading to crop damage and higher labor and costs for rice and crawfish producers.

Apple snails and tiny rice delphacid insects have been reported in rice and crawfish fields across the U.S. South, with particular attention on Louisiana. Farmers describe damaged rice stands, extra labor sorting pests from crawfish, and higher operational costs. Scientists and extension agents are sampling fields and studying how farming practices, shipping and weather may be affecting the spread. Researchers say the role of climate change is uncertain but could make it easier for some pests to persist in the region. Key facts: - Apple snails have become common in many Louisiana fields and reproduce rapidly, and they have been observed damaging young rice plants. - Rice delphacid insects were detected across several southern rice-producing states and have been linked to substantial yield losses, especially in ratoon crops. - Farmers report increased labor and costs from managing both snails and delphacids, and researchers are still developing management recommendations. Summary: The presence of these invasive snails and delphacid insects has reduced rice stands in some areas and added labor and expense for rice and crawfish producers. Undetermined at this time.