Chapter 5 Legume–Wheat Rotation Effects on Residual Soil Moisture, Nitrogen and Wheat Yield in Tropical Regions

Danga, B. O.; Ouma, Josephine P.; Wakindiki, Isaiah I.C.; Bar‐Tal, Asher

doi:10.1016/s0065-2113(08)00805-5

Cited by 43 publications

(18 citation statements)

References 99 publications

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“…By including perennial grasses and legumes (e.g., alfalfa) into complex rotation systems, significantly fractal aggregation (D m < 1) was readily observed. The root systems of these perennial plant species can facilitate the development and enhancement of soil structure (Danga et al 2009). More interestingly, in the Breton soils, D m was seen to be correlated with POM-C concentration and POM C:N ratio.…”

Section: Complex Rotations Further Improve Other Soil Quality Indicatorsmentioning

confidence: 99%

Soil organic matter dynamics in long-term temperate agroecosystems: rotation and nutrient addition effects

Hernandez‐Ramirez

Kiani

et al. 2018

Can. J. Soil. Sci.

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Soil organic matter (SOM) is a major driver of key agroecosystem functions. Our objective was to examine the dynamics of organic matter in whole soil, particulate (POM; >53 μm size), and mineral-associated (MAOM) fractions under varying crop rotations and nutrient managements at two long-term experimental sites (Breton and Lethbridge). Soil samples were collected from simple (2 yr) and complex (5 or 6 yr) crop rotations at the 5-10 cm depth. We found associations between SOM pools versus microbial community and soil aggregation. Compared to cropped soils, an adjacent forest exhibited a significantly higher soil total organic carbon (TOC) and a shift in SOM fractions with substantially higher POM. However, the forest soil had the lowest microbial biomass C among all the assessed land use systems (P < 0.05), suggesting that other factors than the amount of labile SOM (i.e., POM-C) were controlling the microbial community. When contrasted to simple 2 yr rotations, the complex rotations including perennials and legumes significantly raised TOC and soil total nitrogen as well as the stable SOM fraction (i.e., MAOM-C and -N) consistently for both Breton and Lethbridge sites. Our findings highlight that varying land managements have profound feedbacks on soil quality as mediated by alterations in long-term SOM dynamics.Résumé : La matière organique (MO) joue un rôle important dans le fonctionnement des écosystèmes agricoles. Les auteurs voulaient approfondir la dynamique de la MO dans le sol entier, dans les particules de matière organique (PMO; granulométrie > 53 μm) et dans les minéraux associés à la matière organique (MAMO) en fonction du régime d'assolement et de gestion des éléments nutritifs à deux sites expérimentaux à long terme (Breton et Lethbridge). Pour cela, ils ont échantillonné le sol des assolements simples (2 ans) et complexes (5 ou 6 ans) à une profondeur de 5 à 10 cm. Le réservoir de MO présente des liens avec la microflore tellurique et les agrégats. Comparativement aux sols cultivés, le sol d'une forêt contigüe s'est avéré sensiblement plus riche en carbone organique total (COT), et la MO comprenait sensiblement plus de particules. Cependant, le sol forestier présentait la plus faible biomasse microbienne parmi les sols examinés (P < 0,05), signe que d'autres facteurs que la concentration de MO labile (à savoir, le C-PMO) régissent la microflore. Comparativement aux assolements simples de deux ans, les assolements complexes incluant des vivaces et des légumineuses accroissent sensiblement le COT et l'azote total du sol, de même que la fraction de MO stable (à savoir, C-MAMO et N-MAMO), tant aux sites de Breton qu'à ceux de Lethbridge. Ces constatations soulignent que les différents régimes de gestion du sol ont des répercussions appréciables sur la qualité du sol, consécutivement à une modification de la dynamique à long terme de la MO. [Traduit par la Rédaction] Mots-clés : écosystème agricole, biomasse microbienne, matière organique du sol, agrégation, qualité du sol.

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Section: Complex Rotations Further Improve Other Soil Quality Indicatorsmentioning

confidence: 99%

Soil organic matter dynamics in long-term temperate agroecosystems: rotation and nutrient addition effects

Hernandez‐Ramirez

Kiani

et al. 2018

Can. J. Soil. Sci.

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“…Furthermore, Akhtar et al reported that N recovery in biomass was significantly higher when the soil contained additional fertilizers [42]. Pierce et al and Danga et al reported that grain legumes grown in turning round with annual cereal crops contribute to the total pool of nitrogen in the soil and improve the yield of cereals [21,46].…”

Section: Above Ground Biomass and Grain Yield Of Maizementioning

confidence: 99%

Biochar Integration with Legume Crops in Summer Gape Synergizes Nitrogen Use Efficiency and Enhance Maize Yield

et al. 2020

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Besides carbon (C) sequestration, biochar (BC) is recently believed to deliver multiple eco-friendly benefits to the soil for enhancing crop productivity. Use of mineral fertilizers coupled with BC been suggested a promising sustainable strategy for increasing crops yield. However, imperative study is needed to investigate (1) BC integration with multiple legumes crop adjusted in summer gape for pooling more organic carbon and nitrogen, and (2) subsequently looking into its synergism with mineral N in the following crop. Therefore, two years’ field experiments were conducted on maize under cereal based cropping pattern with the adjustment of legumes (i.e., mungbean, cowpea, and Sesbania) with a fallow in summer. In legumes, treatments consist of (0 and 50 t ha−1) BC application. However, N rates of 0, 90, 120, 150 kg ha−1 were added to the subsequent maize crop. Preceding legumes plots with the use of 50 t ha−1 biochar enhanced maize grain yield, above ground biomass, stover N, grain N, soil C, and N content after maize harvest and N use efficiency as compared to non-legumes with BC and legumes without BC plots. N application increased grain yield, above-ground biomass, stover N, grain N, and soil N but reduced N use efficiency with higher rates. Conclusively, the integration of biochar and legumes is a promising option for increasing the entire farm production of cereal-based cropping systems. This increment in yield was associated with supplying a viable input of N and C to soil and increased yields from this supplementary ‘summer gap’ crop.

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“…It has long been known that cereals, oilseeds, grasses, and herbs produce higher protein grains and higher yields when grown after or in conjunction with legumes (Dakora and Keya 1997;Jensen and Hauggaard-Nielsen 2003;Danga et al 2009). Accordingly, legumes are frequently rotated with non-legume crops such as cereals.…”

Section: Introductionmentioning

confidence: 99%

Legumes in the reclamation of marginal soils, from cultivar and inoculant selection to transgenic approaches

Peña¹,

Pueyo²

2011

Agron. Sustain. Dev.

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Mineral nitrogen deficiency is a frequent characteristic of arid and semi-arid soils. Biological nitrogen fixation by legumes is a sustainable and environmentalfriendly alternative to chemical fertilization. Therefore, legumes have a high potential for the reclamation of marginal soils. Such issue is becoming more urgent due to the ever-rising requirement for food and feed, and the increasing extension of salinized and degraded lands, both as a consequence of global change and irrigation practices. This manuscript reviews current research on physiological and molecular mechanisms involved in the response and tolerance to environmental stresses of the Rhizobiumlegume symbiosis. We report in particular recent advances on the isolation, characterization, and selection of tolerant rhizobial strains and legume varieties, both by traditional methods and through biotechnological approaches. The major points are the following. (1) Understanding mechanisms involved in stress tolerance is advancing fast, thus providing a solid basis for the selection and engineering of rhizobia and legumes with enhanced tolerance to environmental constraints. (2) The considerable efforts to select locally adapted legume varieties and rhizobial inocula that can fix nitrogen under conditions of drought or salinity are generating competitive crop yields in affected soils. (3) Biotechnological approaches are used to obtain improved legumes and rhizobia with enhanced tolerance to abiotic stresses, paying particular attention to the sensitive nitrogen-fixing activity. Those biotechnologies are yielding transgenic crops and inocula with unquestionable potential.In conclusion, the role of legumes in sustainable agriculture, and particularly, their use in the reclamation of marginal lands, certainly has a very promising future.

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Chapter 5 Legume–Wheat Rotation Effects on Residual Soil Moisture, Nitrogen and Wheat Yield in Tropical Regions

Cited by 43 publications

References 99 publications

Soil organic matter dynamics in long-term temperate agroecosystems: rotation and nutrient addition effects

Soil organic matter dynamics in long-term temperate agroecosystems: rotation and nutrient addition effects

Biochar Integration with Legume Crops in Summer Gape Synergizes Nitrogen Use Efficiency and Enhance Maize Yield

Legumes in the reclamation of marginal soils, from cultivar and inoculant selection to transgenic approaches

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