Assessment of changes in soil health throughout organic potato rotation sequences

Nelson, Karen L.; Lynch, D. R.; Boiteau, Gilles

doi:10.1016/j.agee.2009.01.014

Cited by 57 publications

(28 citation statements)

References 56 publications

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“…Nelson et al (2009) found, in similar soil types as the present study, that MBC and the microbial quotient were decreased in the potato phase, compared with other phases of the potato rotation. In the present study, similar trends for MBC and microbial quotient were evident although for the latter significant treatment differences were not evident.…”

Section: Soil Propertiessupporting

confidence: 62%

Influence of 10 years of conservation tillage on some biological properties of a fine sandy loam in the potato phase of two crop rotations in Atlantic Canada

Carter¹,

Peters²,

Noronha³

et al. 2009

Can. J. Soil. Sci.

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Conservation practices in potato (Solanum tuberosum L.) cropping systems can reduce excess tillage, provide crop residue cover, and maintain crop productivity; however, little is known about their long-term influence on soil biota and biological properties. Conservation tillage was evaluated in two potato rotations: a 2-yr barley-potato rotation and 3-yr clover-based (barley-red clover-potato) rotation initiated in 1994 on a fine sandy loam (Orthic Podzol) in Prince Edward Island, eastern Canada. Soil samples were obtained in 2003 from the 0- to 10-cm soil depth of the potato phase of both rotations to evaluate the influence of conservation, compared with conventional tillage, on changes in soil fertility, soil structural properties, soil C and N fractions, soil-borne pathogens, nematode communities, and micro-arthropod (Collembola and Acari) communities. The 3-yr conservation tillage practice improved soil structural stability, increased soil extractable P and K, increased soil organic C and total N and their particulate fractions, compared with the other treatments. Comparisons with earlier studies indicated that soil organic C had reached an equilibrium level at the 0- to 10-cm soil depth. Reduction of potato disease caused by Rhizoctonia solani was evident in the 3-yr rotation, compared with the 2-yr rotation, but was not influenced by tillage practice. Plant parasitic nematodes were not greatly influenced by rotation and tillage treatments; however, densities of the beneficial bacterial-feeding nematodes were increased under the 3-yr conservation tillage treatment. The abundance of micro-arthropods was increased by conservation tillage, while their diversity was mainly influenced by the rotation cycle rather than tillage practice. Overall, the 3-yr conservation tillage treatment provided a more beneficial soil biological condition than the other treatments, especially when compared with the 2-yr conventional tillage practice. Key words: Conservation systems, potato rotation, fine sandy loam, soil fertility, soil organic C and N fractions, soil structure, soil-borne pathogens, nematode, Collembola; Acari

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Section: Soil Propertiessupporting

confidence: 62%

Influence of 10 years of conservation tillage on some biological properties of a fine sandy loam in the potato phase of two crop rotations in Atlantic Canada

Carter¹,

Peters²,

Noronha³

et al. 2009

Can. J. Soil. Sci.

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“…After converting the combined effects of measured N 2 O production, CH 4 oxidation and C sequestration, plus the CO 2 costs of agronomic inputs to CO 2 equivalents (g CO 2 m -2 yr -1 ) none of the systems provided net mitigation, and N 2 O production was the single greatest source of GWP. The no-till system had the lowest GWP (14), followed by organic (41), low input (63) and conventional (114). Cavigelli et al [34] reported on GWP calculations for a no-till (NT), chisel till (CT) and organic (Org3) cropping systems at the long-term USDA-ARS Beltsville Farming Systems Project in Maryland, USA.…”

Section: Field Cropsmentioning

confidence: 99%

“…Recent studies suggest these rotations confer marked benefits to soil organic matter and soil health including micro-and macro-fauna. In a study conducted on four farm sites over 2 years, indices of soil health, including earthworm abundance and biomass and soil microbial biomass, appeared to benefit particularly from these extended rotations, recovering from marked reductions during potato cropping to levels found in adjacent permanent pastures only 3 to 4 yrs after potatoes (comprising 1 yr of grain followed by forages) [114]. Soil organic C levels were also sustained at all sites (~30-38 Mg C ha -1 in the surface 0-15cm across all sites and rotation phases) with no significant change during the potato phase or relative to the reference fields.…”

Section: Soil C Sequestrationmentioning

confidence: 99%

The Carbon and Global Warming Potential Impacts of Organic Farming: Does It Have a Significant Role in an Energy Constrained World?

2011

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About 130 studies were analyzed to compare farm-level energy use and global warming potential (GWP) of organic and conventional production sectors. Cross cutting issues such as tillage, compost, soil carbon sequestration and energy offsets were also reviewed. Finally, we contrasted E and GWP data from the wider food system. We concluded that the evidence strongly favours organic farming with respect to whole-farm energy use and energy efficiency both on a per hectare and per farm product basis, with the possible exception of poultry and fruit sectors. For GWP, evidence is insufficient except in a few sectors, with results per ha more consistently favouring organic farming than GWP per unit product. Tillage was consistently a negligible contributor to farm E use and additional tillage on organic farms does not appear to significantly deplete soil C. Energy offsets, biogas, energy crops and residues have a more limited role on organic farms compared to conventional ones, because of the nutrient and soil building uses of soil organic matter, and the high demand for organic foods in human markets. If farm E use represents 35% of total food chain E use, improvements shown of 20% or more in E efficiency through organic farm management would reduce food-chain E use by 7% or more. Among other food supply chain stages, wholesale/retail (including cooling and OPEN ACCESSSustainability 2011, 3 323 packaging) and processing often each contribute 30% or more to total food system E. Thus, additional improvements can be obtained with reduced processing, whole foods and food waste minimization.

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Section: Abstract Yield Of Organic Potato Cultivars In the Subtropicaunclassified

“…Esses mesmos autores relatam que o principal fator para alta produtividade no cultivo orgânico de batata é a escolha correta da cultivar, a qual deve ser adaptada ao sistema de cultivo e ao ambiente e apresentar alto potencial produtivo e resistência às principais pragas e doenças (Palmer et al, 2013). As principais cultivares utilizadas no Brasil, Ágata, Asterix, Markies, Mondial e Atlantic, são importadas, sendo ambiente, através da conservação da matéria orgânica do solo e da possibilidade de recuperação de atributos chaves da sustentabilidade do solo (Nelson et al, 2009).A obtenção de boa produtividade de batata em sistema de cultivo orgânico é um desafio aos produtores, sendo que as informações de manejo e cultivares são escassas (Reichert et al, 2013). A alta produtividade no sistema de cultivo orgânico está relacionada ao manejo da cultura como adubação, controle de pra-E m tempos atuais em que o debate sobre o bem-estar humano e a produção de alimentos aumenta, o cultivo orgânico se destaca como uma prática sustentável (Bennett, 2017).…”

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Produtividade de cultivares de batata orgânica em região subtropical do Brasil

et al. 2017

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RESUMOA escolha da cultivar é fundamental para se alcançar altas produtividades de batata em sistema de cultivo orgânico. O objetivo deste trabalho foi avaliar a produtividade e os componentes produtivos de tubérculos e sugerir cultivar de batata para sistema de cultivo orgânico na região Sul do Brasil. O experimento foi realizado em duas safras, 2013/2014 e 2014/2015, três ensaios, em Guarapuava-PR e Caseiros--RS. Foram avaliadas oito cultivares (Agata, Clara, Eliza, Catucha, Aracy Ruiva, Itararé, Vitória e Cris) quanto à produtividade comercial e total de tubérculos, número de tubérculo total e comercial, e porcentagem de massa seca dos tubérculos. O delineamento experimental foi blocos ao acaso em esquema de parcela subdividida, em que os ensaios foram alocados na parcela e as cultivares nas subparcelas, com quatro repetições. A produtividade total e comercial das cultivares variou conforme o ensaio, entretanto 'Catucha' manteve-se sempre no grupo das cultivares mais produtivas, atingindo cerca de 28 e 23 t/ha de produtividade total e comercial, respectivamente. A relativa alta produtividade dessa cultivar foi devido principalmente ao maior número de tubérculos produzidos, cerca de oito e quatro tubérculos/ planta, total e comercial, respectivamente. Além disso, essa cultivar produziu tubérculos com maior porcentagem de massa seca nos três ensaios (25; 16 e 21% nos ensaios 1; 2 e 3, respectivamente). Deste modo, 'Catucha' é uma das cultivares sugeridas para o plantio de batata em sistema de cultivo orgânico em regiões de clima subtropical no Brasil.Palavras-chave: Solanum tuberosum, esterco, rendimento, tubérculo. ABSTRACT Yield of organic potato cultivars in the subtropical region of BrazilThe cultivar selection is fundamental to reach high potato yield in the organic production system. The objective of this work was to evaluate tuber yield and yield components and make suggestion for organic production system in South region of Brazil. The experiment was carried out in two crop seasons, 2013/2014 and 2014/2015, three trials, in Guarapuava, Paraná State and Caseiros, Rio Grande do Sul State, Brazil. Eight cultivars were evaluated (Agata, Clara, Eliza, Catucha, Aracy Ruiva, Itararé, Vitória and Cris) for total and marketable tuber yield, number of total and marketable tubers, and percentage of tuber dry matter content. A completely randomized block design in a split plot scheme, with trials as main plot and cultivars in sub plot, and four replications was used. The total and marketable yield varied according to the trial, however 'Catucha' stayed always in the group of high yielding cultivars, reaching around 28 and 23 t/ha of total and marketable yield, respectively. The relatively high yield of this cultivar was mainly due to high number of tubers, around eight and four/plant, total and marketable tubers, respectively. Moreover, this cultivar had the tubers with higher percentage of tuber dry matter content in all three trials (25; 16 and 21% in the trials 1; 2 and 3, respectively). Therefore, 'Catucha' is ...

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Assessment of changes in soil health throughout organic potato rotation sequences

Cited by 57 publications

References 56 publications

Influence of 10 years of conservation tillage on some biological properties of a fine sandy loam in the potato phase of two crop rotations in Atlantic Canada

Influence of 10 years of conservation tillage on some biological properties of a fine sandy loam in the potato phase of two crop rotations in Atlantic Canada

The Carbon and Global Warming Potential Impacts of Organic Farming: Does It Have a Significant Role in an Energy Constrained World?

Produtividade de cultivares de batata orgânica em região subtropical do Brasil

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