Response of Organic Fertilizer Application to Soil Microorganisms and Forage Biomass in Grass–Legume Mixtures

Yan, Huilin; Zhou, Xueli; Zheng, Kaifu; Gu, Shuhang; Yu, Hao; Ma, Kun; Zhao, Yangan; Wang, Yingcheng; Zheng, Hua; Liu, Hanjiang; Shi, Dejun; Lu, Guangxin; Deng, Ye

doi:10.3390/agronomy13020481

Cited by 3 publications

(5 citation statements)

References 68 publications

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“…Ce sont donc les champignons dans une large mesure qui réalisent l'essentiel des activités de décomposition de la matière organique et de recyclage des nutriments (Val-Moraes et al, 2013 ;Rosas-Medina et al, 2019). Cette prépondérance des champignons est due au type de sol, à la qualité de la matière organique, au niveau d'acidité et au niveau de dégradation du sol (Chen Wen et al, 2020 ;Yan et al, 2023). Cependant, selon Tahat et al (2020), la diversité et l'activité des microorganismes constituent les composantes principales de la Santé et de la fertilité des sols, aussi la prédominance des espèces fongiques montre une fois de plus que le milieu est limité en biodiversité et en richesse enzymatique, par conséquent, les différentes activités de dégradation et de transformation de la matière organique ne se font pas de façon optimale dans ces sols.…”

Section: Sols Argileuxunclassified

Diagnostic de l’état agropédologique des sols argileux de Kango au Gabon

Endamane,

Ona,

Mbegha

et al. 2023

Rev. Afr. Environ. Agric.

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Description du sujet. La diminution drastique de terres arables à Libreville pousse de plus en plus les agriculteurs à s’installer dans les localités proches de la capitale gabonaise pour y pratiquer l’agriculture et ravitailler Libreville en produits agricoles.Objectif. La présente étude qui se déroule à quatre-vingt kilomètres de Libreville, a pour objectifs de : (1) déterminer certaines propriétés physico-chimiques et biologiques des sols de Kango, et de comparer les valeurs trouvées avec les valeurs seuil agronomiques, (2) relever les contraintes liées à la production agricole sur ces sols, et (3) proposer des solutions adéquates pour une exploitation agricole respectueuse de l’environnement.Méthodes. Des échantillons de sols ont été prélevés, et les analyses physico-chimiques et biologiques y ont été réalisées : le pH eau, le pH KCl, le carbone organique total, l’azote total, l’azote assimilable, le phosphore total, le phosphore assimilable, l’aluminium, les cations basiques, la capacité d’échange cationique, le taux de saturation en bases échangeables, la biomasse microbienne, le quotient microbien, les rapports azote microbien/azote total et carbone microbien/azote microbien.Résultats. Les sols prélevés sont argileux, ils ont des teneurs en carbone organique total, en azote total et en phosphore total agronomiquement convenables. Mais la très forte acidité, les teneurs en phosphore et azote assimilables, en cations basiques, le taux de saturation très bas et l’activité biologique constituent les principales contraintes à la production agricole.Conclusion. Le chaulage, l’apport de biochar et des amendements organiques sont des solutions à appliquer pour obtenir de bons rendements dans ces rendements dans ces sols dans le respect de l’environnement. Description of the subject. Faced with the drastic reduction of arable land in Libreville following the development of the city, more and more farmers and agro-industries are settling in localities close to the Gabonese capital where they can find land to exploit in to supply Libreville with agricultural products, such as the locality of Kango, located 82 kilometers from Libreville.Goals. The objectives of this study are (1) to determine certain physico-chemical and biological properties of the soils of Kango and to compare the values found with the agronomic threshold values, (2) to identify the constraints likely to limit agricultural production on these soils, and (3) to propose adequate solutions for an efficient and environmentally friendly agricultural exploitation.Methods. Soil samples were taken, and physico-chemical and biological analyzes were carried out: water pH, KCl pH, total organic carbon, total nitrogen, assimilable nitrogen, total phosphorus, phosphorus assimilable, aluminum, basic cations, cation exchange capacity, exchangeable base saturation rate, microbial biomass, microbial quotient, microbial nitrogen/total nitrogen and microbial carbon/microbial nitrogen ratios.Results. The soils sampled are clayey, they have agronomically suitable total organic carbon, total nitrogen and total phosphorus contents. But the very high acidity, the assimilable phosphorus and nitrogen, basic cations, the very low saturation rate and the biological activity constitute the main constraints to agricultural production.Conclusion. Liming, the addition of biochar and organic amendments are solutions to be applied to obtain good yields in these soils while respecting the environment.ls dans le respect de l’environnement.

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Section: Sols Argileuxunclassified

Diagnostic de l’état agropédologique des sols argileux de Kango au Gabon

Endamane,

Ona,

Mbegha

et al. 2023

Rev. Afr. Environ. Agric.

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“…The application of manure failed to improve soil fertility in the ultisol type. [1] stated that it has been widely recognized that the application of organic fertilizers in monoculture and continuous planting can change the microbial community and increase forage biomass on the Qinghai-Tibet Plateau. Thus, the preference for organic fertilizer is also high.…”

Section: Technical Efficiency and Effect Of Manure On Melon Productionmentioning

confidence: 99%

“…Of the various inputs used, organic fertilizer which in this case is manure is an environmentally friendly type of input. To reduce the environmental damage associated with high-input agriculture, farmers are increasingly required to maintain productivity while reducing synthetic fertilizer inputs [1]. The question is, could manure be an alternative?…”

Section: Introductionmentioning

confidence: 99%

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Organic Fertilizer and Technical Efficiency in Melon Cultivation in Wonogiri, Central Java

Agustono¹,

Irawan²,

Andriani³

2023

ijcsrr

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Melon (Cucumis melo L.) is a potential seasonal fruit crop. In melon cultivation, farmers combine various inputs. Combined inputs such as land, seeds, organic fertilizers, inorganic fertilizers, pesticides, labor. Organic fertilizer is now a promising method for sustainable agriculture where it is most affordable compared to synthetic fertilizers. The objectives of this study were (1) to determine the technical efficiency (ET) of melon farming, (2) to determine the effect of manure on melon production. (3) To determine the effect of age, formal education and farmer experience on the use of manure. Giriwoyo sub-district was chosen as the research location because it has the largest area of harvested land and the highest amount of melon farming production in Wonogiri Regency. Selection of farmer samples using accidental sampling technique. The number of respondents was 60 farmers. The conclusion from the results of the study that (1) the average technical efficiency of melon farmers is 96.7% classified as high criteria, (2) manure has a positive effect on melon production, thus the use of manure can increase melon production which will further increase technical efficiency. (3) Age, education and experience have a positive effect on the use of manure. The suggestions given are (1) to increase technical efficiency can be done by adding manure and (2) increasing the use of manure can be done by increasing age, education and experience. Increasing age as a proxy for information, namely by adding information, increasing knowledge with training and increasing experience can be improved by apprenticeship activities with other parties. Experience is a key factor to increase the use of manure.

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“…Currently, grass-legume mixtures are the most commonly used planting pattern for artificial grasslands compared with traditional monoculture ( 7 , 8 ). The key reason for selecting legumes as the main crop for a mixture in agriculture is their ability to fix nitrogen, which is highly valued for enhancing soil fertility and reducing dependence on synthetic nitrogen fertilizers ( 9 ).…”

Section: Introductionmentioning

confidence: 99%

Grass-legume mixtures maintain forage biomass under microbial diversity loss via gathering Pseudomonas in root zone soil

Liu,

Yan,

Yang

et al. 2023

mSystems

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As the most common approach for the restoration of degraded grasslands, the use of grass-legume mixtures has long been recognized for its role in increasing aboveground biomass and resisting grassland degradation. However, whether the legumes in these mixtures can help neighboring plants resist the decline in biomass caused by the loss of soil microbial diversity remains a question worthy of investigation. To address this, we employed a dilution method to create a gradient of decreasing microbial diversity in soil and utilized full-factorial combinations of legumes and two grasses to investigate the crucial role of legumes in the mixture. The results showed that compared to monoculture, the mixture of Medicago sativa L. and Elymus dahuricus Turcz. enhanced the biomass of grass species under conditions of soil microbial diversity loss. We then discovered that a significantly enriched Pseudomonas (ASV53), in the grass-legume mixtures under conditions of microbial diversity loss, was positively correlated with plant biomass and nitrogen-fixing ( nifH ) gene abundance, implying that it could be a keystone species. In addition, the grass-legume mixture increased the deterministic processes of microbial community enrichment in the root zone soil by enhancing the process of homogeneous selection. Functional predictions revealed that grass-legume mixtures increased the potential abundance of N-related and phototrophy-related microbial communities in the root zone soil. This study provides an important insight into the mechanism underlying the role of legumes in increasing and maintaining grass biomass despite soil microbial diversity loss. IMPORTANCE Grass-legume mixtures are a common practice for establishing artificial grasslands, directly or indirectly contributing to the improvement of yield. In addition, this method helps maintain soil and plant health by reducing the use of chemical fertilizers. The impact of grass-legume mixtures on yield and its underlying microbial mechanisms have been a focus of scientific investigation. However, the benefits of mixtures in the context of soil microbial diversity loss remain a problem worthy of exploration. In this study, we examined different aboveground and belowground diversity combinations to elucidate the mechanisms by which grass-legume mixtures help maintain stable yields in the face of diversity loss. We identified the significantly enriched Pseudomonas genus microbial ASV53, which was gathered through homogeneous selection and served as a keystone in the co-occurrence network. ASV53 showed a strong positive correlation with biomass and the abundance of nitrogen-fixing genes. These findings provide a new theoretical foundation for utilizing grass-legume mixtures to enhance grass yields and address the challenges posed by diversity loss.

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Response of Organic Fertilizer Application to Soil Microorganisms and Forage Biomass in Grass–Legume Mixtures

Cited by 3 publications

References 68 publications

Diagnostic de l’état agropédologique des sols argileux de Kango au Gabon

Diagnostic de l’état agropédologique des sols argileux de Kango au Gabon

Organic Fertilizer and Technical Efficiency in Melon Cultivation in Wonogiri, Central Java

Grass-legume mixtures maintain forage biomass under microbial diversity loss via gathering Pseudomonas in root zone soil

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