US EPA

6442670 

Journal Article 

Buried red rice seed 

Goss, WLB 

1939 

Yes 

Journal of the American Society of Agronomy
ISSN: 0095-9650 

31 

7 

633-637 

Under dry storage at soil temperature conditions existing in California, all of the red rices tested showed good vitality after three winters. The cultivated rices showed loss of vitality in the third year, especially the Caloro variety. Cultivated white rice when buried in the soil at the depth of ordinary plowing loses its vitality during the first winter. Italian and California red rices behave very similarly to cultivated rices although they are slightly more persistent. In general, the seed remained alive longer in the irrigated than in the non-irrigated plots. The Italian purple-awned red variety retains its vitality longer than the California white-awned, particularly under dry conditions. The southern red rices show good vitality after 3 years in the soil and some germination after 7 years. They appear to persist longer under Texas and Arkansas conditions than under California conditions. It is evident that clean culture during a short rotation will not rid the land of red rice. 

; Oryza sativa; weed control; climatic factors; viability; seed dormancy; California; Texas; Arkansas/