2018
DOI: 10.1007/s10333-018-0666-7
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Increasing paddy yields and improving farm management: results from participatory experiments with good agricultural practices (GAP) in Tanzania

Abstract: Rice is an increasingly important commodity in sub-Saharan Africa. In Tanzania, the rice yield gap is as high as 87%, due to a combination of production constraints and sub-optimal crop management. Reducing this yield gap may be partly achieved through the introduction and dissemination of good agricultural practices (GAP). We conducted 18 farmer-managed onfarm trials in Tanzania, to test a set of GAP components against conventional farmers' practices (FP) for two consecutive growing seasons in 2013 and 2014. … Show more

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Cited by 45 publications
(58 citation statements)
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“…Improved modern varieties such as NERICA‐4, Primavera and B22 were used at Ankazomiriotra in Madagascar (88%), variety Saro‐5 at Kahama (13%) and Kilombero (38%) in Tanzania, and variety K98 at Doho (36%) in Uganda. A recent study from Kilombero observed Kisekese, Kalamata and Super India to be among the most popular local varieties (Senthilkumar et al., 2018). The poor adoption rates of improved modern rice varieties in ESA have been attributed to the mismatch in terms of farmer and consumer grain quality preferences (Meertens, Ndege, & Lupeja, 1999; Nhamo et al., 2014) and more recently to sub‐optimal adaptation to occurring climate extremes and poor performance following erratic crop management that is often observed at smallholder farms (Sekiya, Tomitaka, Oizumi, Assenga, & Jacob, 2015).…”
Section: Resultsmentioning
confidence: 99%
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“…Improved modern varieties such as NERICA‐4, Primavera and B22 were used at Ankazomiriotra in Madagascar (88%), variety Saro‐5 at Kahama (13%) and Kilombero (38%) in Tanzania, and variety K98 at Doho (36%) in Uganda. A recent study from Kilombero observed Kisekese, Kalamata and Super India to be among the most popular local varieties (Senthilkumar et al., 2018). The poor adoption rates of improved modern rice varieties in ESA have been attributed to the mismatch in terms of farmer and consumer grain quality preferences (Meertens, Ndege, & Lupeja, 1999; Nhamo et al., 2014) and more recently to sub‐optimal adaptation to occurring climate extremes and poor performance following erratic crop management that is often observed at smallholder farms (Sekiya, Tomitaka, Oizumi, Assenga, & Jacob, 2015).…”
Section: Resultsmentioning
confidence: 99%
“…At Kilombero in Tanzania, compared to the weed‐free fields, presence of a below canopy weed cover ranging from less than 10 to more than 60% reduced the yield by 3.6 to 4.4 t/ha. Good land levelling and timely weed control are components of good agricultural practices recommended to avoid yield losses (Rodenburg & Johnson, 2009; Senthilkumar et al., 2018). In the irrigated lowland of Ambohibary, compared to direct seeding, yield reduced with 1.74 t/ha by transplanting.…”
Section: Resultsmentioning
confidence: 99%
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“…In general, the cropping calendar for double or triple rice is tight as each location has a climatically inappropriate period for rice cultivation. To narrow the yield gap in farmers' field and to achieve yield ceiling (potential) of high-yielding varieties, introducing good agricultural practices (GAP), an integrated set of the recommended crop, soil, water, and weed management practices (Senthilkumar, Tesha, Mghase & Rodenburg, 2018), is important. Selection of the most appropriate cropping calendar should be a component of GAP.…”
Section: Introductionmentioning
confidence: 99%