Effects of inter-specific interaction of nitrogen fertilizer and bean-maize cropping systems on quality of bean seed in Western Kenya

Ogutu, Maurice; James, Omale

doi:10.5251/abjna.2012.3.4.154.168

Cited by 7 publications

(3 citation statements)

References 9 publications

(11 reference statements)

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“…These results are in line with the research conducted by Ożzütrk (2010), who found that TSW in winter rapeseed (Brassica napus L.) showed a steady increase when N rate increased from 0 to 150 kg ha −1 N, as well as consistent with studies in lentil (Lens culinaris Medik.) (Rahman et al 2013), common kidney bean (Phaseolus vulgaris L.) (Ogutu et al 2012), winter wheat (Triticum aestivum L.) (Mohammad and Ataei 2013), and mustard [Brassica juncea (L.) Czern.] (Mozaffari et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Effect of nitrogen fertilization on camelina seed yield, yield components, and downy mildew infection

Jiang

2016

Can. J. Plant Sci.

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Camelina [Camelina sativa (L.) Crantz] has potential in aquaculture, livestock feed production, and the biofuel industry. It is necessary to determine the appropriate production technology for the newly introduced crop under different environmental conditions. The objective of this 2-year study was to measure the response of five camelina genotypes in terms of seed yield, yield components, and disease incidence to applied nitrogen (N) at multiple sites in the Maritime provinces of eastern Canada. The factorial experiment was set up as a randomized complete block design. The two factors were six N rates (0, 25, 50, 100, 150, and 200 kg ha −1 N) and five genotypes of camelina (Calena, CDI002, CDI005, CDI007, and CDI008). The interactive effect of N rates and genotypes was considered. Results showed that camelina, which is usually considered a low-input crop, responded positively to increased applied N at rates up to 200 kg ha −1 N. Seed yield responded differently to applied N rates depending on genotype. Branch and pod development were decisive for seed yield. The advanced line CDI007 had the highest yield potential among the five genotypes. Downy mildew infection was positively correlated with applied N rates; however, seed yield was not significantly affected by downy mildew infection.Key words: camelina, genotype, nitrogen, yield, yield components, downy mildew.Résumé : La caméline [Camelina sativa (L.) Crantz] présente de l'intérêt pour l'aquaculture, la fabrication d'aliments du bétail et l'industrie des biocarburants. Toutefois, il faut identifier la technologie qui permettra de produire cette nouvelle culture dans diverses conditions. Cette étude de deux ans devait préciser la réaction de cinq génotypes de caméline à l'application d'engrais azoté (N) sur les plans du rendement grainier, des composantes du rendement et de l'incidence des maladies, à de nombreux endroits dans les provinces des Maritimes, dans l'est du Canada. L'expérience factorielle était structurée en blocs aléatoires complets. Les deux facteurs examinés consistaient en six taux d'application des engrais N (0, 25, 50, 100, 150 et 200 kg de N par hectare) et cinq génotypes de caméline (Calena, CDI002, CDI005, CDI007 et CDI008). Les chercheurs ont examiné l'interaction de ces facteurs. Les résultats indiquent que la caméline, souvent considérée comme une culture peu exigeante, réagit bien à l'application d'une plus grande quantité d'engrais N, jusqu'au taux de 200 kg par hectare. Le rendement grainier réagit de façon variable au taux d'application de l'engrais, selon le génotype. Le développement des ramifications et des gousses joue un rôle déter-minant dans le rendement grainier. La lignée évoluée CDI007 se caractérise par le rendement potentiel le plus élevé des cinq génotypes. L'infection par le mildiou présente une corrélation positive avec la quantité d'engrais N appliquée. Cependant, cette maladie n'a aucun impact significatif sur le rendement grainier. [Traduit par la Rédaction]

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Section: Discussionmentioning

confidence: 99%

Effect of nitrogen fertilization on camelina seed yield, yield components, and downy mildew infection

Jiang

2016

Can. J. Plant Sci.

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“…Relative to its effect on maize, fertiliser plus manure treatment did not influence bean yield in the maize-bean intercrops (Table 4), owing to intra-specific competition, where beans are generally outcompeted by maize. Notably, maize has higher competitive abilities for nutrients than beans under a bean-maize intercrop (Ogutu and Owuoche, 2012). As such, higher yields in pure stands could be attributed to a lack of competition for nutrients, water and other environmental resources.…”

Section: Discussionmentioning

confidence: 99%

Effect of combining organic manure and inorganic fertilisers on maize–bush bean intercropping

Ndengu¹,

Mponela²,

Chataika

et al. 2022

Ex. Agric.

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Summary In sub-Saharan Africa (SSA), farmers intercrop common beans with maize but apply inorganic or organic fertilisers targeting only maize. Effects of this practice on bush bean yield have not been fully evaluated with respect to input use and compatibility when intercropped with maize. An on-farm trial managed by smallholder community members was conducted to assess the influence of various soil fertility management options and cropping systems on the yield of two bush bean genotypes (SER45 and SER83) in two agro-ecological zones of Malawi. The farmer-managed trials were laid out in split-plot design, with the bean genotypes as main plots and a combination of the soil fertility management options (i.e., no input, manure, fertiliser and fertiliser + manure) and cropping systems (i.e., sole crop and intercrop) as subplots. The trials were affected by terminal drought and dry spells, but results show that manure and fertiliser application enhanced the resilience of the drought-tolerant bean genotypes. The genotype SER45 was responsive to manure application in the sole crop, giving a 44.4% yield increase over no-manure application. In sole cropping with fertiliser plus manure, bean yields improved by 40.1% for SER45 and 78.3% for SER83 relative to the no-input control. Although sole cropping had higher bean yields, the treatment with manure and fertiliser had a higher land equivalence ratio for intercrop of 1.54 for SER45 and 1.32 for SER83 over sole cropping. These results show that, under smallholder farmer management, the climate adaptability of bush bean genotypes could be enhanced by the combined application of organic and inorganic fertilisers in maize–bean intercrop. The combined application also enhances whole-farm productivity of the common maize–bean intercrop practice than monocrop, hence is of benefit to most low-input smallholder farmers of SSA.

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“…Seed weight was taken after seeds had been threshed, winnowed and dried to moisture content of 14% as recommended by Ogutu et al (2012).…”

Section: Yield Datamentioning

confidence: 99%

Effect of modified spacing arrangements, fertilizer use and legume intercrop on prevalence of cassava brown streak disease in Western Kenya

Ememwa¹,

Wéré²,

Ogemah³

et al. 2017

Afr. J. Agric. Res.

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Cassava is an important food security crop in Western and Coastal counties of Kenya. As a food security crop, it is continuously cultivated with minimal inputs. Its production is constrained by factors like declining soil fertility, poor agronomic practices, pests and diseases. Cassava brown streak disease (CBSD) is a viral infection attacking the cassava crop causing yield losses of up to 100%. The current study was intended to determine the effect of planting technologies on the prevalence of CBSD in two agro-ecological zones of Western Kenya: lower midland (LM1) and upper midland (UM1). Various spacing arrangements, four fertilizer regimes, legume intercrop and improved cassava cultivars were tested in a randomised complete block design (RCBD) with each site as a replicate. Data was collected on pathogen population and disease incidences and severity, and cassava and legumes yields. Results showed no effect of modified spacing and legume intercrop on CBSD incidence. However, incidences varied by cassava cultivar (9 to 59%) and fertilizer application (3 to 41%). Low CBSD incidences (3 to 16%) were observed over time in management strategies involving fertilizer NPK 17:17:17 suggesting that vigour enhancement may have contributed to low CBSD incidences. Low incidence of CBSD on improved cultivars indicates that CBSD can be mitigated through crop improvement technologies such as breeding for resistance to diseases. Intercropping cassava with beans and modification of spacing did not demonstrate an effect on CBSD incidence. However, 2 m× 0.5 m spacing arrangement can compensate for rising land pressure in Western Kenya and areas facing similar problem.

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Effects of inter-specific interaction of nitrogen fertilizer and bean-maize cropping systems on quality of bean seed in Western Kenya

Cited by 7 publications

References 9 publications

Effect of nitrogen fertilization on camelina seed yield, yield components, and downy mildew infection

Effect of nitrogen fertilization on camelina seed yield, yield components, and downy mildew infection

Effect of combining organic manure and inorganic fertilisers on maize–bush bean intercropping

Effect of modified spacing arrangements, fertilizer use and legume intercrop on prevalence of cassava brown streak disease in Western Kenya

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