Weeds are major biotic constraints to rice production worldwide. Compared other sub-regions, weed communities of not well described for East Africa and there is limited information on environmental factors affecting the distribution species. This study aimed address these knowledge gaps. Seasonally flooded fields 31 sites in Rwanda, Tanzania, Kenya Uganda, across three altitude classes (Low: <2...

Natural products are one of the resources for discovering novel pesticide leads. Here, by molecular hybridization between natural enamino diketone skeleton and reported herbicide lead compound I, a series 3-(1-aminoethylidene)-6-methyl-2H-pyran-2,4(3H)-dione derivatives (APD) were rationally designed, synthesized tested herbicidal activity in greenhouse. The bioassay results showed that most ta...

Abstract Rice tungro bacilliform Virus (RTBV) is one of the viruses that cause disease in rice plants causing leaf yellow and plant stunting. Some weed species have also been described as potential hosts for RTBV addition to rice. However, cannot be diagnosed weeds only by looking at their morphological symptoms because infected with do not show typical symptoms. Hence this research was conduct...

Abstract The transition from puddled-transplanted rice ( Oryza sativa L.) (PTR) to direct-seeded (DSR) is gaining popularity in central China. In contrast, the PTR system most common practice southwest Weeds are a major problem paddy fields of DSR systems, and herbicides widely used for weed control. However, increased frequency rate herbicide use leads rapid evolution resistance. Smallflower u...