Growth Response of Selected Rice (Oryza sativa L.) Varieties to Integrated Weed Management in Sudan Savanna of Nigeria

Ajala, A. A.; Muhammad, Aisha; Yakubu, A. I.; Sanda, H. Y.

doi:10.9734/jaeri/2019/v20i330106

Cited by 1 publication

(4 citation statements)

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“…A major setback in the implementation of an IWM strategy is the poor timing of operations (Alagbo and Akinyemiju 2018a). Weed control at an early crop growth stage is important to enhance rice yield (Ajala et al 2019b;Nojima 1966). Weeds are better controlled during periods of crop establishment (when crop plants and weeds are tender) provided planting or transplanting takes place within a short time after land preparation (Adigun et al 2005;Imeokparia and Okusanya 1997).…”

Section: Timing Of Operationsmentioning

confidence: 99%

“…Rice must remain weed-free during the critical period of biomass development (Ajala et al 2019a) to support panicle initiation and grain filling. Once the tillering is adversely affected by weeds, the yield will be reduced (Ajala et al 2019b;Imeokparia and Okusanya 1997). Achieving such timeliness would imply that farmers have the required weed control inputs ahead of time.…”

Section: Timing Of Operationsmentioning

confidence: 99%

“…In Nigeria, cultural practices such as land preparation, crop rotation, and adoption of a weed-competitive cultivar are most widely recommended practices in lowlands in combination with an appropriate chemical weed-control method (Ajala et al 2019a(Ajala et al , 2019bDanmaigoro et al 2016;Imeokparia and Okusanya 1997;Jiya et al 2019). Emphasis given to each weed control method would depend on the peculiarity of rice ecosystems across each agroecological zone (Figure 1) in which rice is cultivated.…”

Section: Integrated Weed Managementmentioning

confidence: 99%

“…a References:Adeyemi et al 2017;Ajala et al 2019aAjala et al , 2019b Akobundu and Ahissou 1985;Alagbo and Akinyemiju 2018b;Alhassan 2015b; …”

mentioning

confidence: 99%

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Weed management in rainfed lowland rice ecology in Nigeria – challenges and opportunities

2022

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Developing an effective weed management strategy is crucial to sustainable rice production in Nigeria. Rainfed lowland ecology contributes significantly to the volume of rice cultivated in the country in terms of yield and land acreage. Nevertheless, increased weed infestation remains one of its major production constraints. This review highlights the strength and weaknesses of weed management practices in rainfed lowland ecology, potential research gaps, and discusses the potential of a sustainable weed management strategy for lowland rice. In this review, a rainfed lowland situation is described (where water is limited) to engage flooding as a potential weed control option, due to the undulating land terrains. Effective weed management begins with creating a weed-free environment at the critical crop growth stages, such that broadcasted or transplanted rice seedlings can efficiently utilize water, nutrients, and light. Sustainable weed management practices in Nigerian lowland ecology would therefore imply that farmers begin to incorporate crop rotation to suppress problem weed pressure in continuous rice cropping systems, adopt conventional or minimum tillage to enhance herbicide efficacy and early establishment of rice, adopt weed competitive and high yielding cultivars, and practice appropriate spacing, seeding rate, and seeding methods that can support easy adoption of mechanical weeders and optimum plant population to suppress weed pressure at a later growth stage. This is feasible where farmers are supported with infrastructural facilities, farm machinery, and necessary inputs. Future research should engage lowland rice farmers in specific agroecological zones.

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Section: Timing Of Operationsmentioning

confidence: 99%

Section: Timing Of Operationsmentioning

confidence: 99%