Relationships Between Ph Values of Organic Soils and Availabilities of 12 Plant Nutrients

Lucas, Robert E.; Davis, James F.

doi:10.1097/00010694-196109000-00005

Cited by 210 publications

(129 citation statements)

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“…Organic soils are known to be acidic, minimalizing microbial decomposition and having high organic matter content with >30 C:N ratio immobilizing N; these are two characteristics that hinder N plant availability [44]. In our study, the organic soil was atypical with a pH of 7.7 and a C:N ratio of 15 that is ideal for N mineralization.…”

Section: Nitrogen Mineralization Occuring In Subarctic Cultivated Soilsmentioning

confidence: 78%

Nutrient Concentrations of Bush Bean (Phaseolus vulgaris L.) and Potato (Solanum tuberosum L.) Cultivated in Subarctic Soils Managed with Intercropping and Willow (Salix spp.) Agroforestry

2017

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Abstract:To ease food insecurities in northern Canada, some remote communities started gardening initiatives to gain more access to locally grown foods. Bush beans (Phaseolus vulgaris L.) and potatoes (Solanum tuberosum L.) were assessed for N, P, K, Mg, and Ca concentrations of foliage as indicators of plant nutrition in a calcareous silty loam soil of northern Ontario James Bay lowlands. Crops were grown in sole cropping and intercropping configurations, with comparisons made between an open field and an agroforestry site enclosed with willow (Salix spp.) trees. Foliage chemical analysis of the sites revealed an abundance of Ca, adequacies for Mg and N, and deficiencies in P and K. Intercropping bean and potato did not show significant crop-crop facilitation for nutrients. The agroforestry site showed to be a superior management practice for the James Bay lowland region, specifically for P. The agroforestry site had significantly greater P for bean plant (p = 0.024) and potato foliage (p = 0.002) compared to the open site. It is suspected that the presence of willows improve plant available P to bean and potatoes by tree root-crop root interactions and microclimate enhancements.

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Section: Nitrogen Mineralization Occuring In Subarctic Cultivated Soilsmentioning

confidence: 78%

Nutrient Concentrations of Bush Bean (Phaseolus vulgaris L.) and Potato (Solanum tuberosum L.) Cultivated in Subarctic Soils Managed with Intercropping and Willow (Salix spp.) Agroforestry

2017

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“…In a greenhouse experiment by Matsubara et al (2002), the soil pH of treatments receiving biochar increased from 5.4 to 6.2 (10% biochar by volume) and 6.3 (30% biochar by volume). According to Lucas and Davis (1961), these pH values fall within the pH range (5.5 to 7.0) where plant nutrients are near their maximum availability in agricultural soils. Many of these alterations in soil characteristics probably occur at a micro-scale , and thus may only affect hyphae that are in the immediate vicinity of biochar particles.…”

Section: Mechanism 1: Biochar Changes Soil Nutrient Availabilitymentioning

confidence: 98%

“…Additions of biochar to soil alters important soil chemical and physical (see below) properties such as pH (has caused both increases and decreases), and typically increase soil cation exchange capacity (CEC), and can lead to greater water holding capacity (WHC), while generally decreasing bulk density (Tryon 1948). Increases in soil pH towards neutral values (Lucas and Davis 1961), in addition to increased CEC (Glaser et al 2002), may result in increases in bio-available P and base cations in biochar influenced soils. Additionally, Lehmann et al (2003), Topoliantz et al (2005), Gundale and DeLuca (2006) and Yamato et al (2006) showed that biochar itself contained small amounts of nutrients that would be available to both soil biota (including mycorrhizal fungi) and plant roots.…”

Section: Mechanism 1: Biochar Changes Soil Nutrient Availabilitymentioning

confidence: 99%

Mycorrhizal responses to biochar in soil – concepts and mechanisms

et al. 2007

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Experiments suggest that biomass-derived black carbon (biochar) affects microbial populations and soil biogeochemistry. Both biochar and mycorrhizal associations, ubiquitous symbioses in terrestrial ecosystems, are potentially important in various ecosystem services provided by soils, contributing to sustainable plant production, ecosystem restoration, and soil carbon sequestration and hence mitigation of global climate change. As both biochar and mycorrhizal associations are subject to management, understanding and exploiting interactions between them could be advantageous. Here we focus on biochar effects on mycorrhizal associations. After reviewing the experimental evidence for such effects, we critically examine hypotheses pertaining to four mechanisms by which biochar could influence mycorrhizal abundance and/or functioning. These mechanisms are (in decreasing order of currently available evidence supporting them): (a) alteration of soil physico-chemical properties; (b) indirect effects on mycorrhizae through effects on other soil microbes; (c) plant-fungus signaling interference and detoxification of allelochemicals on biochar; and (d) provision of refugia from fungal grazers. We provide a roadmap for research aimed at testing these mechanistic hypotheses.

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“…All of the samples except two OFS sites (S-9 and S-10) represented the lower concentration of B in soil in all three cropping seasons ( Figure 10). The availability of increased concentration of B in OFS may be due to the continuous application of organic fertilizer in soil (Lucas and Davis, 1961).…”

Section: Resultsmentioning

confidence: 99%

Impacts of Fertilizer Application on Soil Properties at Kaharole Upazila of Dinajpur District in Bangladesh

et al. 2016

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Relationships Between Ph Values of Organic Soils and Availabilities of 12 Plant Nutrients

Cited by 210 publications

References 0 publications

Nutrient Concentrations of Bush Bean (Phaseolus vulgaris L.) and Potato (Solanum tuberosum L.) Cultivated in Subarctic Soils Managed with Intercropping and Willow (Salix spp.) Agroforestry

Nutrient Concentrations of Bush Bean (Phaseolus vulgaris L.) and Potato (Solanum tuberosum L.) Cultivated in Subarctic Soils Managed with Intercropping and Willow (Salix spp.) Agroforestry

Mycorrhizal responses to biochar in soil – concepts and mechanisms

Impacts of Fertilizer Application on Soil Properties at Kaharole Upazila of Dinajpur District in Bangladesh

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