The effect of slash/mulch and alleycropping bean production systems on soil microbiota in the tropics

Rosemeyer, Martha; Viaene, Nicole; Swartz, Heather; Kettler, J. S.

doi:10.1016/s0929-1393(00)00071-8

Cited by 12 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some authors (e.g., Rosemeyer et al 2000) have suggested that the use of cover crop species may favor the presence and abundance of AMF due to increased availability of organic matter and nutrients. The present study demonstrated that the use of cover crop species (both mulch and cover crops) in a long-term maize production system contributes to the maintenance of high levels of AMF species richness, which in turn results in high levels of AMF colonization in Fig.…”

Section: Discussionmentioning

confidence: 99%

Impact of weed control on arbuscular mycorrhizal fungi in a tropical agroecosystem: a long-term experiment

et al. 2012

View full text Add to dashboard Cite

Cover crop species represent an affordable and effective weed control method in agroecosystems; nonetheless, the effect of its use on arbuscular mycorrhizal fungi (AMF) has been scantily studied. The goal of this study was to determine root colonization levels and AMF species richness in the rhizosphere of maize plants and weed species growing under different cover crop and weed control regimes in a long-term experiment. The treatment levels used were (1) cover of Mucuna deeringian (Muc), (2) "mulch" of Leucaena leucocephala (Leu), (3) "mulch" of Lysiloma latisiliquum (Lys), (4) herbicide (Her), (5) manual weeding (CD), (6) no weeding (SD), and (7) no maize and no weeding (B). A total of 18 species of AMF belonging to eight genera (Acaulospora, Ambispora, Claroideoglomus, Funneliformis, Glomus, Rhizophagus, Sclerocystis, and Scutellospora) were identified from trap cultures. Muc and Lys treatments had a positive impact on AMF species richness (11 and seven species, respectively), while Leu and B treatments on the other hand gave the lowest richness values (six species each). AMF colonization levels in roots of maize and weeds differed significantly between treatment levels. Overall, the use of cover crop species had a positive impact on AMF species richness as well as on the percentage of root colonized by AMF. These findings have important implications for the management of traditional agroecosystems and show that the use of cover crop species for weed control can result in a more diverse AMF community which should potentially increase crop production in the long run.

show abstract

Section: Discussionmentioning

confidence: 99%

Impact of weed control on arbuscular mycorrhizal fungi in a tropical agroecosystem: a long-term experiment

et al. 2012

View full text Add to dashboard Cite

show abstract

“…By contrast, pasture and forest inoculum were comparable in AMF spore species composition in two Costa Rican moist forests Wedin 1997, Picone 2000), but were higher in density in pasture than in another moist forest in Costa Rica (Fischer et al 1994). Agricultural and grazing lands managed by burning (Gó mez-Pompa 1980) may also have altered mycorrhizal inoculum, although field bioassay plants showed no reduction in percentage of root mycorrhizal infection under standard tropical agricultural practices (Maldonado et al 2000, Rosemeyer et al 2000.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Early‐ and Late‐seral Mycorrhizae During Restoration in Seasonal Tropical Forest, Mexico

Allen

Egerton‐Warburton

et al. 2003

Ecological Applications

129

View full text Add to dashboard Cite

Disturbance of vegetation and soil may change the species composition of arbuscular mycorrhizal fungi (AMF), which may in turn affect plant species responses to AMF. Seasonal tropical forest in Mexico is undergoing rapid conversion to early-successional forest because of increased wildfire and may require restoration. The responses of six early-and late-successional tree species were tested using early-and late-successional AMF inoculum. The plants were germinated in the shadehouse and received three inoculum treatments: (1) soil from a two-year-old burned site, (2) soil from a mature forest site, or (3) uninoculated controls. They were transplanted as seedlings to a site prepared by burning, and their growth was measured from September 1997 to November 2000. All six species had the greatest growth response to early-seral inoculum, but the response to late-seral inoculum varied. Two tree species, Ceiba pentandra and Guazuma ulmifolia, were smallest with late-seral inoculum, even smaller than the uninoculated plants, and the other species, Brosimum alicastrum, Havardia albicans, Acacia pennatula, and Leucaena leucocephala, had intermediate growth with late-seral inoculum. Of these, Brosimum, Havardia, and Ceiba occur in late-successional forest, and the others are early seral. Of the several growth measurements (height, cover, biomass, stem diameter), stem-diameter responses to inoculum were still significantly different into the third year for four of the species. The uninoculated plants became infected by residual inoculum in the burned experimental site within three months of transplanting, yet mycorrhizal responses persisted. The treatment size differences may be due to different species composition of the inocula. The early-seral inoculum was dominated by small-spored Glomus spp., while the late-seral inoculum had a higher density of large-spored Gigasporaceae. The latter are known from greenhouse experiments to promote a smaller plant-growth response than Glomus. Mature forest trees may withstand the carbon drain from Gigasporaceae better than establishing seedlings, so the growth patterns we observed with inoculum source are consistent with a rapidly growing successional forest, followed by slower-growing mature forest. The results suggest that early-seral AMF should be used when seedlings are inoculated for restoration, even for late-seral tree species.

show abstract

“…References to slash and mulch systems, although they include common and pre-Hispanic systems in Mexico (Kettler, 1997), are indeed rare (Kettler, 1997;Thurston, 1997;Rosemeyer et al, 2000). Furthermore, burning has two separate effects and it needs to be understood if any positive or negative effect of burning is due to the burn per se, i.e.…”

Section: Introductionmentioning

confidence: 99%

Separating the Agronomic Effects of Burning and Biomass Removal in a Typical Slash and Burn Rotation System in Southern Cameroon

Norgrove¹,

Nkem²,

Häuser³

2003

Biological Agriculture & Horticulture

View full text Add to dashboard Cite

Little research on slash and burn systems has investigated whether effects of burning are due to the fire per se or to the removal of biomass from the soil surface. In this experiment, the aim was to assess the effects of burning versus no burning and mulching versus no mulching on maize yields, chlorophyll levels, nutrient uptake and soil properties in a short fallow 'no external input' system in two consecutive cropping seasons on an ultisol in southern Cameroon. In the second maize cropping season, treatments were not re-imposed so any effects would be residual. In the first cropping season, when mulch was retained, grain dry mass was 2.79 Mg ha-1 , more than the 1.41 Mg ha-1 obtained without mulch. Soil bulk density was higher in non-mulched than in mulched treatments and both grain yield and maize aboveground biomass were strongly (both r 2 = 0.50) and negatively associated with soil bulk density. Under such short fallow conditions, farmers should be encouraged to mulch rather than burn residues when cropping maize, as this leads to higher yields within the usual time frame of the cropping cycle.

show abstract

The effect of slash/mulch and alleycropping bean production systems on soil microbiota in the tropics

Cited by 12 publications

References 17 publications

Impact of weed control on arbuscular mycorrhizal fungi in a tropical agroecosystem: a long-term experiment

Impact of weed control on arbuscular mycorrhizal fungi in a tropical agroecosystem: a long-term experiment

Impacts of Early‐ and Late‐seral Mycorrhizae During Restoration in Seasonal Tropical Forest, Mexico

Separating the Agronomic Effects of Burning and Biomass Removal in a Typical Slash and Burn Rotation System in Southern Cameroon

Contact Info

Product

Resources

About