Rice yields under Rhamphicarpa fistulosa-infested field conditions, and variety selection criteria for resistance and tolerance

Rodenburg, Jonne; Cissoko, Mamadou; Dieng, Ibnou; Kayeke, Juma; Bastiaans, L.

doi:10.1016/j.fcr.2016.04.030

Cited by 20 publications

(19 citation statements)

References 38 publications

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“…It should be noted that 2015 was characterized by relatively low R. fistulosa infestation levels, rendering the virtues of resistance less evident. Moreover, compared to the resistant NERICA varieties, Supa India showed to be superiorly tolerant to R. fistulosa parasitism (Rodenburg et al, 2016a). Also the preference for early sowing was confirmed in these farmer managed trials.…”

Section: Species-specific Control Strategiesmentioning

confidence: 60%

“…Poor accessibility to seeds of improved varieties was frequently mentioned as an obstacle for the use of resistant rice varieties. Recently systematic screenings of popular rice varieties were undertaken to find good sources of resistance and tolerance against both S. asiatica and R. fistulosa (Cissoko et al, 2011;Jamil et al, 2011b;Rodenburg et al, 2015aRodenburg et al, , 2016a. But prior to these exercises, very few adapted and high-yielding rice varieties with effective resistance or tolerance were known.…”

Section: Obstacles For Implementation Of Alternative Control Optionsmentioning

confidence: 99%

“…The strategy does not rely on an early maturing variety, simply because early sowing combined with the hydromorphic to flooded conditions of the lowlands allows the rice crop to mature without being exposed to conditions of severe drought stress. In the farmer managed on-farm trial, Supa India was compared with NERICA-varieties that had demonstrated resistance against R. fistulosa in previous seasons (Rodenburg et al, 2016a).…”

Section: Species-specific Control Strategiesmentioning

confidence: 99%

“…In lowland, the selected rice varieties were Supa India (late maturing; 144 days), NERICA-L-20 (medium maturing; 142 days) and IR64 (early maturing; 134 days). Varieties Supa India and NERICA-L-20 were more susceptible to R. fistulosa than IR64 (Rodenburg et al, 2016a). The varieties were sown at five different times, with intervals of 14 days.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…The use of resistant or tolerant varieties is another promising track. Recently, several improved rice varieties with resistance and tolerance against S. asiatica, S. hermonthica and R. fistulosa have been identified (Rodenburg et al, 2017;Rodenburg et al, 2016a). Complex national variety release procedures and the absence of functional seed systems, however, still hamper the use of this technology in many parts of Africa.…”

Section: Introductionmentioning

confidence: 99%

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Section: Species-specific Control Strategiesmentioning

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Differences in the ecology of witchweed and vampireweed: Implications for rice farming in Africa

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Societal Impact StatementParasitic weeds in African rice systems threaten household‐level food security and income generation. Most affected farmers are smallholders with limited capacities to address these pests. Obligate parasites Striga asiatica and Striga hermonthica (witchweed) are problematic in rainfed upland rice, affecting approximately 312,000 households. Facultative parasite Rhamphicarpa fistulosa (rice vampireweed) has more recently become problematic in rainfed lowland rice, affecting approximately 133,000 households. A better appreciation of differences in biology, ecology and host–parasite interactions between these weeds, and the implications for species‐specific management, will inform awareness and preparedness among regional actors.

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Importance of market-oriented research for rice production in Tanzania. A review

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Rice consumption in Tanzania has greatly increased since the 1960s; it is predicted to continue to increase owing to urbanization and changes in consumer preferences from traditional staples to rice. In this study, we review rice agroecology, its value chain, and price determinants, and the history of and challenges to rice research in Tanzania. Our main findings are as follows: (1) rice cultivation can be classified into three major categories: irrigated lowland, rainfed lowland, and rainfed upland. Irrigated lowland is then subdivided into the permanent river, seasonal water, dam, and groundwater subtypes, while rainfed lowland is subdivided into flood plain (fields near rivers), catchment (fields on gentle slope in catchment basin), narrow valley (fields on flat narrow valley bottoms), and plain grassland (fields on gentle slope in savannah grassland). (2) Various stakeholders are involved in production, storage, milling, wholesale, retail, and trade at local, urban, regional, and national levels, resulting in higher market prices of local rice compared to imported rice. However, consumers still choose local rice consisting of traditional cultivar because of its distinct taste and aroma. (3) Improving yield potential through the introduction of foreign elite lines/cultivars has been a major research target; however, farmers have been rejecting most of the new cultivars due to poor grain quality. (4) An integrated set of agronomic management techniques is effective in increasing the yield of traditional cultivars under irrigated lowland. Technical package effectiveness has yet to be tested in all subtypes of rainfed lowland. We propose a new research framework for rice production in Tanzania that is greatly oriented toward meeting consumer demands. In the framework, both breeding and agronomy should have specific research targets for each agroecosystem. Furthermore, genetic resources of traditional cultivars should be fully explored. This study shows the importance of multidisciplinary approach in improving rice production in Tanzania.

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Rice yields under Rhamphicarpa fistulosa-infested field conditions, and variety selection criteria for resistance and tolerance

Cited by 20 publications

References 38 publications

Developing parasitic weed control strategies for rainfed rice production environments

Developing parasitic weed control strategies for rainfed rice production environments

Differences in the ecology of witchweed and vampireweed: Implications for rice farming in Africa

Importance of market-oriented research for rice production in Tanzania. A review

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