Control of weeds and rice sheath blight disease in paddy fields by rice chaff and duckweeds ( Lemna spp.)
Year: 2003
Type: article
Abstract: The effects of rice chaff, rice straw powder, duckweed ( Lemna spp. ) and overlapping azolla, Azolla imbri-cata (Roxb. ) Nakai on rice growth and yields, and their control efficacy against weeds and rice sheath blight (Rhizocoto-nia solani Kilhn) were studied in greenhouse and paddy fields. The results indicated that there were no significant negative effect on rice tiller, plants height, biomass production and yields by using rice chaff, rice straw powder, duckweed and overlapping azolla alone. However, it significantly inhibited the germination of barnyardgrass (Echinochloa crusgalli) and reduced its biomass production. The effects on plants height and biomass production of transplanted weeds difformed aglin-gale ( Cyperus difformis) , sheathed monochoria ( Monochoria vaginali) and needle spikesedge ( Eieocharis yokoscensis ) were different. The control efficacy against weeds and sheath blight disease were significantly improved by using rice chaff combined with duckweed, whereas there was no obvious negative effect on rice.
Source: Plant Protection
Author: Huang Shi
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2375246943