Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Faye, Aliou; Sall, Saïdou Nourou; Chotte, Jean‐Luc; Lesueur, Didier

doi:10.1007/s10705-007-9093-7

Cited by 12 publications

(9 citation statements)

References 18 publications

(10 reference statements)

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“…Absence of fixation in plants belonging to species that are potentially high fixers has also been reported in the same (Souza et al, 2012) and in other semiarid areas (Faye et al, 2007). The legumes were not inoculated, and native rhizobia populations compatible with the legume species could be absent in the soil.…”

Section: Resultssupporting

confidence: 67%

Nitrogen symbiotically fixed by cowpea and gliricidia in traditional and agroforestry systems under semiarid conditions

Martins

Freitas

Menezes

et al. 2015

Pesq. agropec. bras.

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-The objective of this work was to estimate the amounts of N fixed by cowpea in a traditional system and by cowpea and gliricidia in an agroforestry system in the Brazilian Northeast semiarid. The experiment was carried out in a randomized complete block design, in a split-plot arrangement, with four replicates, in the semiarid region of the state of Paraíba, Brazil. Plots consisted of agroforestry and traditional systems (no trees), and split-plots of the three crops planted between the tree rows in the agroforestry system. To estimate N fixation, plant samples were collected in the fourth growth cycle of the perennial species and in the fourth planting cycle of the annual species. In the agroforestry system with buffel grass and prickly-pear cactus, gliricidia plants symbiotically fix high proportions of N (>50%) and contribute with higher N amounts (40 kg ha -1 in leaves) than in the traditional system (11 kg ha -1 in grain and 18 kg ha -1 in straw). In the agroforestry system with maize and cowpea, gliricidia plants do not fix nitrogen, and N input is limited to the fixation by cowpea (2.7 kg ha -1 ), which is lower than in the traditional system due to its lower biomass production.Index terms: Gliricidia sepium, Vigna unguiculata, biological nitrogen fixation, natural abundance, 15 N. Nitrogênio fixado simbioticamente por feijão-caupi e gliricídia em sistemas tradicional e agroflorestal sob condições semiáridasResumo -O objetivo deste trabalho foi estimar as quantidades de N fixadas em feijão-caupi em sistema tradicional e em feijão-caupi e gliricídia em sistema agroflorestal, sob condições semiáridas do Nordeste brasileiro. O experimento foi conduzido em blocos ao acaso, em arranjo em parcelas subdivididas, com quatro repetições, no semiárido da Paraíba. As parcelas consistiram dos sistemas agroflorestal e tradicional (sem árvores), e as subparcelas, dos três cultivos entre as linhas das árvores, no sistema agroflorestal. Para estimar a fixação de N, amostras das plantas foram coletadas no quarto ciclo de crescimento das espécies perenes e no quarto ciclo de cultivo das espécies anuais. No sistema agroflorestal com capim-buffel e palma forrageira, a gliricídia fixa simbioticamente altas proporções de N (>50%) e adiciona quantidades maiores de N (40 kg ha -1 nas folhas) que no sistema tradicional (11 kg ha -1 nos grãos e 18 kg ha -1 na palhada). No sistema agroflorestal com milho e feijão-caupi, a gliricídia não fixa N e a adição de N é limitada à fixação no feijão-caupi (2,7 kg ha -1 ), que é menor que no sistema tradicional em razão da sua baixa produção de biomassa.Termos para indexação: Gliricidia sepium, Vigna unguiculata, fixação biológica do nitrogênio, abundância natural, 15 N.

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Section: Resultssupporting

confidence: 67%

Nitrogen symbiotically fixed by cowpea and gliricidia in traditional and agroforestry systems under semiarid conditions

Martins

Freitas

Menezes

et al. 2015

Pesq. agropec. bras.

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“…In these areas effective nodulation is generally observed. In some cases the nodules formation are occurred but the symbiosis may be not effective (Faye et al, 2007. The contribution of natural fixed N due to symbiosis with native rhizobia has revealed varied rates of fixation in tree legumes, demonstrating the variability in the efficiency of indigenous rhizobia.…”

Section: Introductionmentioning

confidence: 99%

Symbiotic efficiency of native rhizobia in legume tree Leucaena leucocephala derived from several soil classes of Brazilian Northeast region

Silva¹,

Santos²,

Freitas³

et al. 2018

Aust J Crop Sci

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The effective symbiotic activity of rhizobia can contribute increment of biological nitrogen fixation (BNF), which is of great importance in low technology regions. This study aimed to evaluate the symbiotic efficiency of native rhizobia from Brazilian Northeast soils for selection of the most efficient and competitive strains for Leucaena leucocephala plant. The greenhouse test was conducted in factorial scheme (7x3) ). The plants were harvested at 90 days and the following characteristics were determined: plant height, diameter, shoots dry matter, roots dry matter and nodules dry matter, number of nodules, nitrogen concentration and accumulation in shoots, and efficiency of nitrogen fixation. The isolates 36F and 45G are very promising on Biologic Nitrogen Fixation (BNF). They showed high symbiotic efficiency (higher than 90%). These selected strains provided the best characteristics such as plant height (57 and 52 cm), diameter (4.03 and 4.02 mm), dry matter of shoot (3.2 and 3.6 g plant -1) and nitrogen accumulation in shoots (60 and 65 mg plant-1).

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“…De ce fait, cette espèce peut être un moyen pour l'amélioration des sols dégradés surtout ceux ayant un faible niveau de fertilité dans la mesure où A. senegal est particulièrement utilisé dans les jachères pour reconstituer la fertilité du sol (Deans et al, 1999 ;Raddad et Luukkanen, 2006). Faye et al (2007) ont montré des effets positifs de l'arbre A. senegal sur la fertilité des sols grâce à la symbiose avec les bactéries fixatrices d'azote appelées Rhizobiums.…”

Section: Introductionunclassified

Effet de l’arbre <i>Acacia senegal</i> sur la fertilité des sols de gommeraies au Niger

Abdou¹,

Mayaki²,

Kadri³

et al. 2014

Int. J. Bio. Chem. Sci

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Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Cited by 12 publications

References 18 publications

Nitrogen symbiotically fixed by cowpea and gliricidia in traditional and agroforestry systems under semiarid conditions

Nitrogen symbiotically fixed by cowpea and gliricidia in traditional and agroforestry systems under semiarid conditions

Symbiotic efficiency of native rhizobia in legume tree Leucaena leucocephala derived from several soil classes of Brazilian Northeast region

Effet de l’arbre <i>Acacia senegal</i> sur la fertilité des sols de gommeraies au Niger

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