<i>Rhizobium</i>Inoculation Increases of Bean and Maize Yields in Intercrops on Farms in the Peruvian Sierra

Pineda, P.; Kipe-Nolt, Judith A.; Rojas, E.

doi:10.1017/s0014479700024418

Cited by 19 publications

(6 citation statements)

References 9 publications

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“…Siame et al (1998) & Cardoso et al (2007 reported that significant increases in yield of common bean in response to N applied to maize rows were due to inefficient N 2 fixation of common bean. Other studies have shown that common bean did not respond to applied N when nodulation and fixation were good (Pineda et al 1994).…”

Section: Discussionmentioning

confidence: 89%

Maize–common bean intercropping to optimize maize-based crop production

et al. 2017

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SUMMARYMaize (Zea mays L.)–common bean (Phaseolus vulgaris L.) intercropping is a recent practice in north-western Ethiopia and there is limited information on its productivity. A field experiment was conducted at South Achefer and Mecha in north-western Ethiopia during the 2012 and 2013 crop growing seasons to determine combinations of intercrop planting arrangement (IPA) with nitrogen (N) and phosphorus (P) rates for optimizing maize–common bean intercrop productivity and profitability. Treatments consisted of factorial combinations of two IPA (single row of common bean between maize rows and paired rows of common bean between paired rows of maize), two N rates (92 and 128 kg N/ha) and two P rates (20 and 40 kg P/ha). A sole crop maize with recommended fertilizer rate of 128/40 kg N/P/ha was used as a control treatment. The treatments were laid out in a randomized complete block design with three replications. Results indicated that land equivalent ratio was more than unity, and the intercrop system was 20% more productive relative to the sole crop. Maize equivalent yields were highest for most of the intercrop treatments relative to mono-crop maize with yield advantage of 14% from single row IPA with 128/20 kg N/P/ha. Single row IPA with 128/20 kg N/P/ha and paired row IPA with 92/20 kg N/P/ha increased financial returns by 16 and 8% relative to sole crop maize, respectively. Smallholder maize-based cropping of north-western Ethiopia could be nutritionally, agronomically and financially improved through maize–common bean intercropping of single row IPA with appropriate nutrient management.

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Section: Discussionmentioning

confidence: 89%

Maize–common bean intercropping to optimize maize-based crop production

et al. 2017

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“…This was not completely unexpected, recognizing previous research had reported benefits realized by corn when the maize-legume bicultures were collectively inoculated with symbiotic leguminous bacteria. 22,25,26 The results of this research suggest that the inoculated biculture corn indirectly benefited from either the increased nodulation of the bean as a result of an increased abundance of symbiotic nitrogen-fixing bacteria or through a change in the composition of plant-growth promoting rhizobia. Noting that the inoculated biculture bean performed equally as well when planted in monocultures, and the biculture bean appeared to recover from the reduced growth experienced under the un-inoculated condition (i.e.…”

Section: Discussionmentioning

confidence: 90%

“…The optimization of the conversion of atmospheric nitrogen to ammonia by Rhizobium has been the focus of novel sustainable intercropping practices, including the development and application of bacterial soil inoculants that promote plant productivity. [24][25][26] One study revealed a correlation between the abundance of indigenous rhizobia to the efficacy of the inoculant to promote root nodulation (i.e. low initial rhizobia population resulted in an increase in the quantity and mass of nodules).…”

Section: American Journal Of Undergraduate Researchmentioning

confidence: 99%

Effect of Native American Bean-corn Biculture Planting on Free-living Bacterial Abundance and Plant Growth

Miller¹,

Fiene²,

Marsh³

2015

AJUR

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Native American tribes with bountiful harvests. Today it is widely recognized that this associated intercropping system derives much of its success from symbiotic bacteria (e.g. Rhizobium). These bacteria colonize the roots of leguminous plants, allowing them to fix atmospheric nitrogen into ammonia. However, the effect of this intercropping practice on the microbial community, independent of the effect of the symbiotic nitrogen-fixing bacteria, is not well understood. Therefore, a study was designed to model the effects of simultaneously intercropping bean and corn on the abundance of aerobic heterotrophic, free-living nitrogen-fixing, and symbiotic nitrogen-fixing bacteria, as well as plant growth and fecundity markers. In parallel, the benefits mediated by rhizobia were evaluated by inoculating a duplicate set of treatments with N-Dure, a rhizobia-containing inoculum. Native American varieties of pole-bean (Phaseolus vulgaris L.) and corn (Zea mays mays L.) were planted in monoculture and biculture treatments. All cultivations were maintained under greenhouse conditions for 52 days with daily watering and no additional fertilizer or microbial amendments. Although a significant increase in weight per plant was noted for the inoculated biculture when compared to either the inoculated bean or corn monocultures (p ≤ 0.05), the abundance of heterotrophic and free-living nitrogen-fixing bacteria did not show a significant change from the related controls, with or without inoculation. However, symbiotic nitrogen-fixing bacteria, as measured by root nodulation, increased significantly (p ≤ 0.05) for the inoculated biculture and single planting. Thus, these data confirm that corn benefited from this associated intercropping system as shown by an increase in plant biomass that can be attributed to Rhizobium. However, neither the legume-bacteria symbiotic relationship nor the increase in plant biodiversity resulting from this intercropping practice appears to have had significant effects on the abundance of the two common soil-associated bacterial groups evaluated, though further research would be necessary to fully assess the changes to heterotrophic bacterial diversity at the species level. KEYWORDS: Three Sisters; Nitrogen-fixing Bacteria; Inoculation with Rhizobia; Plant Growth Promoting Bacteria; Soil Microbial Biota; Corn and Bean Simultaneous Planting.

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“…Mesoamerican strains of R. etli have also been shown to outcompete R. tropici UMR 1899, under all but acid soil conditions (Martinez and Rosenblueth 1990;Streit et al 1992;Anyango et al 1995;Hungria et al 1997). Even more surprising, significant response to inoculation of beans has been reported in the Andean center of origin of the crop (Pineda et al 1994; Instituto Nacional Autonomo de Investigaciones Agropecuarias (INIAP) 2001, unpublished data). Such specificity could be a factor in the perception of beans as weak in nodulation and nitrogen fixation, and again warrants further study.…”

Section: Discussionmentioning

confidence: 98%

Diversity in the rhizobia associated withPhaseolus vulgarisL. in Ecuador, and comparisons with Mexican bean rhizobia

Bernal

Graham²

2001

Can. J. Microbiol.

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Common beans (Phaseolus vulgaris L.) have centers of origin in both Mesoamerica and Andean South America, and have been domesticated in each region for perhaps 5000 years. A third major gene pool may exist in Ecuador and Northern Peru. The diversity of the rhizobia associated with beans has also been studied, but to date with an emphasis on the Mesoamerican center of origin. In this study we compared bean rhizobia from Mexico and Andean South America using both phenotypic and phylogenetic approaches. When differences between the rhizobia of these two regions were shown, we then examined the influence of bean cultivar on the most probable number (MPN) count and biodiversity of rhizobia recovered from different soils. Three clusters of bean rhizobia were distinguished using phenotypic analysis and principal-component analysis of Box AIR-PCR banding patterns. They corresponded principally to isolates from Mexico, and the northern and southern Andean regions, with isolates from southern Ecuador exhibiting significant genetic diversity. Rhizobia from Dalea spp., which are infective and effective on beans, may have contributed to the apparent diversity of rhizobia recovered from the Mesoamerican region, while the rhizobia of wild Phaseolus aborigineus from Argentina showed only limited similarity to the other bean rhizobia tested. Use of P. vulgaris cultivars from the Mesoamerican and Andean Phaseolus gene pools as trap hosts did not significantly affect MPN counts of bean rhizobia from the soils of each region, but did influence the diversity of the rhizobia recovered. Such differences in compatibility of host and Rhizobium could be a factor in the poor reputation for nodulation and N2 fixation in this crop.

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RhizobiumInoculation Increases of Bean and Maize Yields in Intercrops on Farms in the Peruvian Sierra

Cited by 19 publications

References 9 publications

Maize–common bean intercropping to optimize maize-based crop production

Maize–common bean intercropping to optimize maize-based crop production

Effect of Native American Bean-corn Biculture Planting on Free-living Bacterial Abundance and Plant Growth

Diversity in the rhizobia associated withPhaseolus vulgarisL. in Ecuador, and comparisons with Mexican bean rhizobia

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