Inorganic fertilizer use efficiency of millet crop increased with organic fertilizer application in rainfed agriculture on smallholdings in central Senegal

Tounkara, Adama; Clermont-Dauphin, Cathy; Affholder, François; Ndiaye, Saliou; Massé, Dominique; Cournac, Laurent

doi:10.1016/j.agee.2020.106878

Cited by 41 publications

(28 citation statements)

References 24 publications

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“…Our study indicated that manure amendment increased wheat yield by 9.4% in yellow cinnamon soil after 5 years' manure treatment. Organic fertilizer decomposition occurs after the fertilizer mixed with soil, and nutrient release becomes more synchronized with crop demands [52] and reduced the nutrient loss which increased nutrient use efficiency [53]. This is particularly the case for N, as manure has a high N content (12 g kg −1 in this study).…”

Section: Effects Of Biochar and Manure Amendments On Soil Productivitymentioning

confidence: 79%

Soil nematode community and crop productivity in response to 5-year biochar and manure addition to yellow cinnamon soil

Liu

Zhang

et al. 2020

BMC Ecol

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Background: Manure and biochar soil amendments have shown many benefits to soil quality and crop productivity. This study aimed to reveal the effects of biochar and manure applications on soil fertility improvement and crop productivity in yellow cinnamon soil. Results: This study based on a 5-year field experiment. Four treatments were designed, included the control (CK), biochar amendment, manure amendment, and both biochar and manure amendment (BM). The results showed that: after five years, both biochar and manure treatment improved soil structure by increasing soil mean weight diameter (MWD), and soil water and nutrient supply was also increased by increasing the contents of water content, available potassium and available phosphorus. The productivity was also enhanced as wheat yield under the biochar, manure, and BM treatments increased by 3.59-11.32% compared with CK. In addition, biochar and manure treatment increased soil microbial biomass carbon (MBC) by > 15%, and soil total nematode abundance was significantly increased. Furthermore, the nematode community structure was significantly affected by biochar and manure treatment, dominant trophic group in CK was herbivores, but bacterivores were dominant in the biochar and manure treatments. The distribution of nematode genera was closely related to soil chemical properties and microbial biomass. Increases in the Shannon's diversity index, and decreases in the dominance index and summed maturity index after the 5-year treatment indicated a sustainable soil ecosystem after the biochar and manure applications. Conclusions: These findings indicate that biochar and manure result in better soil quality and increased productivity in yellow cinnamon soil.

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Section: Effects Of Biochar and Manure Amendments On Soil Productivitymentioning

confidence: 79%

Soil nematode community and crop productivity in response to 5-year biochar and manure addition to yellow cinnamon soil

Liu

Zhang

et al. 2020

BMC Ecol

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“…Several efforts have been made to improve the utilization efficiency of inorganic fertilizers, however less success has been achieved [ 15 ]. Researchers have warned that long term continuous application of inorganic fertilizer without adequate organic restitution may degrade the soil to the level where it may become extremely unresponsive or even non-responsive to inorganic fertilizer [ 15 , 16 , 17 ]. The earth crust comprises approximately 28% of silicon [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

The Halotolerant Rhizobacterium—Pseudomonas koreensis MU2 Enhances Inorganic Silicon and Phosphorus Use Efficiency and Augments Salt Stress Tolerance in Soybean (Glycine max L.)

et al. 2020

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Optimizing nutrient usage in plants is vital for a sustainable yield under biotic and abiotic stresses. Since silicon and phosphorus are considered key elements for plant growth, this study assessed the efficient supplementation strategy of silicon and phosphorus in soybean plants under salt stress through inoculation using the rhizospheric strain—Pseudomonas koreensis MU2. The screening analysis of MU2 showed its high salt-tolerant potential, which solubilizes both silicate and phosphate. The isolate, MU2 produced gibberellic acid (GA1, GA3) and organic acids (malic acid, citric acid, acetic acid, and tartaric acid) in pure culture under both normal and salt-stressed conditions. The combined application of MU2, silicon, and phosphorus significantly improved silicon and phosphorus uptake, reduced Na+ ion influx by 70%, and enhanced K+ uptake by 46% in the shoots of soybean plants grown under salt-stress conditions. MU2 inoculation upregulated the salt-resistant genes GmST1, GmSALT3, and GmAKT2, which significantly reduced the endogenous hormones abscisic acid and jasmonic acid while, it enhanced the salicylic acid content of soybean. In addition, MU2 inoculation strengthened the host’s antioxidant system through the reduction of lipid peroxidation and proline while, it enhanced the reduced glutathione content. Moreover, MU2 inoculation promoted root and shoot length, plant biomass, and the chlorophyll content of soybean plants. These findings suggest that MU2 could be a potential biofertilizer catalyst for the amplification of the use efficiency of silicon and phosphorus fertilizers to mitigate salt stress.

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“…In the Sahel region, increased rainfall has had a positive effect on vegetation cover, the general trend of which indicates changes in the variation of the vegetation index. This "re-greening" phenomenon has been accompanied by an improvement in the quality of land in the region (Tounkara et al, 2020). In Zimbabwe, a perception survey (Perception and Indigenous Knowledge Systems) was conducted among 3000 farmers in 8 districts over a two-year period on topics such as population perception on increasing air temperature, shorter winter, reduced rainfall, extended dry season, and increasing frequency of droughts.…”

Section: Climate Ecosystems and Livelihoods For Sustainable Developmentioning

confidence: 99%

Global Dryland Ecosystem Programme (G-DEP): Africa consultative meeting report

Peng

Zhang

et al. 2020

J. Arid Land

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In order to enhance and restore the ecosystems of natural capital in African arid regions, the Global Dryland Ecosystem Programme (G-DEP) consultative meeting was hosted in Dakar, Senegal, from 23 to 25 September 2019. This paper details the first African meeting of the G-DEP. Consultative meeting reviewed preceding dryland ecosystems case studies, identified vulnerable arid and semi-arid regions, and proposed sustainable solutions to problems. It also identified the successes and failures of previous attempts to improve vulnerable ecosystems and ultimately formed an action plan to improve these attempts. Climate, ecosystems, and livelihoods for Sustainable Development Goals (SDGs), Great Green Wall Initiative (GGWI) for Sahara and Sahel, and China-Africa cooperation on science, technology, and innovation are three extra main sections concerned of the meeting. Separately, more specific topics as the complicated relationship between these natural processes and human activity, including pastoralism, soil restoration, and vegetation regenerate techniques, were fully discussed. Consultative meeting also identified the positive effects international collaboration can have on dryland regions, specifically in the capacity of sharing information, technology, and innovation on purpose to develop a joint proposal for long-term research programs in African arid and semi-arid areas. Moreover, meetings that review the progress made on ecosystem management for the sustainable livelihoods in Africa, identification of priority areas, and the development and implementation of ecosystem programs for proper research and collaboration in African arid and semi-arid zones, have been proposed as strategic recommendations to enhance the global partnership for sustainable development. Furthermore, as the outcomes of the workshop, there are three steps proposed to handle African dryland climate changes, several aspects suggested to solve current dilemmas of the GGWI, and a series of actions recommended for G-DEP related activities in Africa.

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Inorganic fertilizer use efficiency of millet crop increased with organic fertilizer application in rainfed agriculture on smallholdings in central Senegal

Cited by 41 publications

References 24 publications

Soil nematode community and crop productivity in response to 5-year biochar and manure addition to yellow cinnamon soil

Soil nematode community and crop productivity in response to 5-year biochar and manure addition to yellow cinnamon soil

The Halotolerant Rhizobacterium—Pseudomonas koreensis MU2 Enhances Inorganic Silicon and Phosphorus Use Efficiency and Augments Salt Stress Tolerance in Soybean (Glycine max L.)

Global Dryland Ecosystem Programme (G-DEP): Africa consultative meeting report

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