Partial substitution of phosphorus fertiliser by farmyard manure and its localised application increases agronomic efficiency and profitability of maize production

Otinga, Abigael N.; Pypers, Pieter; Okalebo, J. R.; Njoroge, Ruth; Emong'ole, M; Six, Laetitia; Vanlauwe, Bernard; Merckx, Roel

doi:10.1016/j.fcr.2012.10.003

Cited by 55 publications

(28 citation statements)

References 23 publications

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“…Epicoccum nigrum, Epicoccum purpurescens), Fusarium sp., Fusarium nygamai, Fusarium oxysporum, Penicillium thomii and Trichoderma harzianum were present in both ecosystems. Next to Fusarium spp., the other Analysis of soil pH was conducted according to Otinga et al (2013). Organic carbon and nitrogen contents were determined following the protocol of Okalebo et al (2002), while extractable soil phosphorus was determined according to Olsen et al (1954) a Kihoro et al 2013 b Atieli et al 2009 c Wambugu et al 2012d Ohaga et al 2007 common taxa in the irrigated ecosystems were Curvularia and Talaromyces (Supplementary Table 1).…”

Section: Rice Endophytic Fungi From Irrigated and Upland Ecosystemsmentioning

confidence: 99%

Analysis of fungal endophytes associated with rice roots from irrigated and upland ecosystems in Kenya

et al. 2015

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Background and aim Fungal endophytes are commonly associated with plants, and are considered an important component of crop production. They can influence plant growth and tolerance to biotic and abiotic stresses. The aim of this study was to analyse and identify endophytic fungi associated with rice roots in irrigated and upland ecosystems in Kenya, as an inventory for a future search for biological control and growth promoting agents. Methods Fungi were isolated from the roots and selected based on culture characteristics. All selected isolates were sequenced using primers targeting the internal transcribed spacer (ITS) region, intergenic spacer (IGS) region and the gene encoding the translation elongation factor (TEF-1α). The species were determined by comparing their sequences with those of well characterised or type strains. Phylogenetic relationships among the species were used to identify their taxonomic groups, and distribution in the agroecosystems, especially for the Fusarium spp. Results Based on sequencing of the ITS region, 75 fungal isolates were identified as Fusarium-like, while the remaining 98 isolates were found to belong to different species representing other genera than Fusarium. A further analysis of the Fusarium spp., using concatenated IGS and TEF-1α sequences showed that these isolates belong to the Fusarium oxysporum (FOSC) and Gibberella fujikuroi (GFSC) species complexes. Within the FOSC isolates, a clear divergence was observed between isolates from irrigated and upland ecosystems, while in the GFSC this phenomenon was not observed. When the total number of species was considered, 27 species were identified in the irrigated ecosystems, while only 18 species were found in the upland ecosystems. Conclusions More fungal species were found in the irrigated ecosystems than in the upland ecosystems. We propose that flooding may affect the assembly of endophytic fungi in rice roots, however, other factors such as rice cultivars, geographical locations and soil types could also be important.

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Section: Rice Endophytic Fungi From Irrigated and Upland Ecosystemsmentioning

confidence: 99%

Analysis of fungal endophytes associated with rice roots from irrigated and upland ecosystems in Kenya

et al. 2015

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“…Demelash et al (2014) reported economical profitability with 844% MRR owing to integration of compost with mineral fertilizers in wheat production. Otinga et al (2013) also reported an increased net benefit of over 33% in response to combined application of FYM and mineral fertilizer in maize production. Sole application of mineral fertilizers brought relatively lower revenue to farmers compared to integration with organic amendments.…”

Section: Economic Analysismentioning

confidence: 99%

Malting barley response to integrated organic and mineral nutrient sources in Nitisol

Tadesse

Asrat

Admasu

et al. 2018

Int J Recycl Org Waste Agricult

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Purpose Depletion of soil fertility accounts for the low yield and quality of malting barley (Hordeum vulgare) in Ethiopia. Mineral fertilizers can counteract nutrient depletion but are unaffordable by low-input farmers. Organic amendments can contribute to correct soil degradation but are often unavailable in the required amounts. Therefore, this experiment was conducted to investigate the effects of combined use of organic and mineral amendments on the yield and quality of malting barley, and on selected soil chemical properties at Lemu-Bilbilo district in the southeastern highlands of Ethiopia. Methods Eight treatments were arranged in randomized complete block design with three replications to compare sole and integrated applications of organic and mineral nutrient sources on crop performance attributes and selected soil characteristics. Results Application of 2.82 t ha −1 compost or 1.07 t ha −1 farmyard manure (FYM) along with 18-10 kg ha −1 N-P gave 4234-4443 kg ha −1 grain yield with 15-17 and 32-39% increase over sole organic amendments and control, respectively, and 757% economic benefit. Combining organic and mineral fertilizers also gave 7-17 and 1-6% increase in available soil P and total N content of the soil. Conclusion Combined application of 50% recommended compost (RC) or 50% recommended FYM (RFYM) + 50% recommended NP (RNP) or 33% RC + 33% RFYM + 33% RNP enhanced yield, grain quality, soil attributes and economic benefits. Therefore, integration of organic and mineral amendments is recommended as best agronomic and economic optimum soil fertility management options for sustainable malting barley production in the southeastern highlands of Ethiopia.

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“…Integrated soil fertility management is mainly aimed at increasing yield [69], but spin-off effects have been noted such as the enhancement of soil structure [70,71], increases microbial biomass [72,73], and improves water infiltration [74,75] through additions of manures, compost, or mineral fertilizers. The use of green manure and low quantities of animal manure have been shown to increase and maintain soil fertility and biodiversity, while surface runoff and soil erosion are significantly reduced.…”

Section: Soil Fertility Managementmentioning

confidence: 99%

Multifaceted Impacts of Sustainable Land Management in Drylands: A Review

et al. 2016

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Biophysical restoration or rehabilitation measures of land have demonstrated to be effective in many scientific projects and small-scale environmental experiments. However circumstances such as poverty, weak policies, or inefficient scientific knowledge transmission can hinder the effective upscaling of land restoration and the long term maintenance of proven sustainable use of soil and water. This may be especially worrisome in lands with harsh environmental conditions. This review covers recent efforts in landscape restoration and rehabilitation with a functional perspective aiming to simultaneously achieve ecosystem sustainability, economic efficiency, and social wellbeing. Water management and rehabilitation of ecosystem services in croplands, rangelands, forests, and coastlands are reviewed. The joint analysis of such diverse ecosystems provides a wide perspective to determine: (i) multifaceted impacts on biophysical and socio-economic factors; and (ii) elements influencing effective upscaling of sustainable land management practices. One conclusion can be highlighted: voluntary adoption is based on different pillars, i.e. external material and economic support, and spread of success information at the local scale to demonstrate the multidimensional benefits of sustainable land management. For the successful upscaling of land management, more attention must be paid to the social system from the first involvement stage, up to the long term maintenance.

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Partial substitution of phosphorus fertiliser by farmyard manure and its localised application increases agronomic efficiency and profitability of maize production

Cited by 55 publications

References 23 publications

Analysis of fungal endophytes associated with rice roots from irrigated and upland ecosystems in Kenya

Analysis of fungal endophytes associated with rice roots from irrigated and upland ecosystems in Kenya

Malting barley response to integrated organic and mineral nutrient sources in Nitisol

Multifaceted Impacts of Sustainable Land Management in Drylands: A Review

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