Soil sustainability indicators following conservation tillage practices under subtropical maize and bean crops

Roldán, A.; Salinas-García, J. R.; Alguacil, M.M.; Caravaca, F.

doi:10.1016/j.still.2006.05.001

Cited by 102 publications

(76 citation statements)

References 44 publications

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“…Nevertheless, independently of the ecological zone, AMF species richness decreases by land use intensification (Tchabi et al, 2008). This decrease in diversity is attributed to a complex selective pressure of agricultural practices, such as ploughing, fertilization and fungicide application, on the AMF communities (Douds and Millner, 1999;Roldan et al, 2007). Besides agroecosystems plant species, soil types, weeds and previous crop have an effect on AMF population as well (Jansa et al, 2002;Mathimaran et al, 2005;Vestberg et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of different plant densities on the diversity of arbuscular mycorrhizal fungi community in a long-term maize monocrop system

Sasvári

Posta

2010

Span. j. agric. res.

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The association between terrestrial plants and arbuscular mycorrhizal (AM) fungi is one of the most widespread symbioses in natural and cropping systems. Different works have shown that besides natural ecosystem, arable crops can also be colonized extensively by arbuscular mycorrhizal fungi (AMF) however, the AbstractThe association between terrestrial plants and arbuscular mycorrhizal (AM) fungi is one of the most widespread mutualistic plant-fungus interactions in natural and cropping systems. We studied the effect of different plant densities (70,000 and 100,000 plant ha -1 ) on species diversity and community structure of AM fungi associated with maize (Zea mays L.) in a long-term crop production experiment established in Martonvásár, Hungary. Based on the differences in small subunit (SSU)/18S ribosomal genes nested-PCR procedure was used to identify groups of AM fungi that are active in the colonization of maize roots. Shannon-Wiener diversity index of AM fungi were 1.43 ± 0.37 and 1.31 ± 0.50 at 70,000 plant ha -1 and 100,000 plant ha -1 respectively. All of sequence types we found belonging to the Glomus clade. Besides Glomus A fungi, only the members of the Glomus B group occurred, however at significantly lower frequency. There were differences in the phylogenetic group composition of AM fungi demonstrating the effect of different plant densities on the diversity of arbuscular mycorrhizal fungi.Additional key words: diversity, mycorrhiza, plant density, Zea mays. Resumen Efecto de diferentes densidades de plantación en la diversidad de la comunidad de hongos micorrizas arbusculares en un sistema de monocultivo de maíz a largo plazoLa asociación entre las plantas terrestres y los hongos micorrizas arbusculares (MA) es una de las simbiosis mutualistas más extendidas entre plantas y hongos en los sistemas naturales y de cultivo. Se ha estudiado el efecto de diferentes densidades de la plantación (70.000 y 100.000 plantas ha -1 ) en diversas especies y la estructura de la comunidad de hongos MA asociados con el maíz (Zea mays L.), en un ensayo de producción a largo plazo en Martonvásár, Hungría. Utilizando las diferencias en la subunidad pequeña (SSU) /18S de los genes ribosomales, se usó un procedimiento de PCR anidada para identificar los grupos de hongos MA activos en las raíces de maíz colonizadas. El índice de diversidad de Shannon-Wiener respecto a los hongos MA fue 1,43 ± 0,37 y 1,31 ± 0,50 en los ensayos con densidades de 70.000 y 100.000 plantas ha -1 , respectivamente. Todos los tipos de secuencias encontradas pertenecieron al género Glomus. Además de hongos del grupo Glomus A, sólo se encontraron secuencias de especies del grupo Glomus B, pero con una frecuencia significativamente menor. Se encontraron diferencias en la composición de los grupos filogenéticos de hongos MA obtenidos, demostrando el efecto de las diferentes densidades de plantas en la diversidad de hongos micorrízicos arbusculares.Palabras clave adicionales: densidad de plantas, diversidad, micorrizas, Zea mays.

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Section: Introductionmentioning

confidence: 99%

Effect of different plant densities on the diversity of arbuscular mycorrhizal fungi community in a long-term maize monocrop system

Sasvári

Posta

2010

Span. j. agric. res.

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“…Du Preez et al, 2001 observed increased levels of K in ZT compared to CT, but this effect declined with depth. Govaerts et al, 2007 found that the K concentration in both the 0-5 cm and 5-20 cm soil layers increased significantly with increasing residue retention under PB planting compared to CT. No effect of crop rotation on K concentrations was observed by Roldan et al, 2007. However, Yadav et al, 2016 reported that after seven years of CA the highest amount of N, P and K (219.8, 24.9 and 203.1 kg ha -1 ) in 0-15 cm soil surface was recorded under PB planting while minimum amount of available N, P and K were observed under CT.…”

Section: Nutrient Dynamicsmentioning

confidence: 97%

“…Hons, 1996 andDe Oliveira andPavan, 1996 also observed higher P levels, probably due to the accumulation of P in soil and the higher SOC content of the soil. Roldan et al, 2007 reported that available P was not affected by tillage system and crop rotations.…”

Section: Nutrient Dynamicsmentioning

confidence: 99%

Conservation Agriculture and Soil Quality– An Overview

Yadav¹,

Parihar²,

Kumar³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…Reasons for stubble burning have been named as to control weeds, pests and diseases, and to facilitate seedbed preparation for the following crop (Pala et al 2000;Virto et al 2007). However, these tillage and residue management practices have been shown to degrade soil physical and chemical properties, as indicated by losses in structural stability and soil organic matter (Govaerts et al 2006;Roldan et al 2007;Verhulst et al 2011). Stubble management further includes summer grazing by sheep and goats.…”

Section: Rationale For the Sustainability Goalsmentioning

confidence: 99%

“…In semi-arid environments of the Mediterranean region, wheat and barley yields increased with no-tillage compared to conventional tillage under relatively drier conditions as determined by site and/ or season (Lampurlanés et al 2002;Cantero-Martínez et al 2003;De Vita et al 2007). Benefits of conservation agriculture include more efficient crop water use and increased yields through improved soil water infiltration and storage (Bescansa et al 2006;Verhulst et al 2011), reduced evaporative losses with residue retention, enhanced soil fertility through higher levels of soil organic matter (Mrabet et al 2001;Roldan et al 2007), improved timeliness of sowing and reduced fuel consumption through the use of direct seeding (Knowler and Bradshaw 2007). However, farmers also require the system-specific management skills to overcome pitfalls, including increased susceptibility to stubble-borne diseases (Fernandez et al 2008), reliance on herbicides for weed control and the risk of herbicide-resistant weed populations (D'Emden and Llewellyn 2006), risk of reduced crop N availability (Angás et al 2006) and a trade-off between crop residue retention and the need for animal feed (Tutwiler et al 1997).…”

Section: Rationale For the Sustainability Goalsmentioning

confidence: 99%

Assessing the sustainability of wheat-based cropping systems using simulation modelling: sustainability = 42?

et al. 2013

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Concepts of agricultural sustainability and possible roles of simulation modelling for characterising sustainability were explored by conducting, and reflecting on, a sustainability assessment of rain-fed wheat-based systems in the Middle East and North Africa region. We designed a goal-oriented, model-based framework using the cropping systems model Agricultural Production Systems sIMulator (APSIM). For the assessment, valid (rather than true or false) sustainability goals and indicators were identified for the target system. System-specific vagueness was depicted in sustainability polygons-a system property derived from highly quantitative data-and denoted using descriptive quantifiers. Diagnostic evaluations of alternative tillage practices demonstrated the utility of the framework to quantify key bio-physical and chemical constraints to sustainability. Here, we argue that sustainability is a vague, emergent system property of often wicked complexity that arises out of more fundamental elements and processes. A 'wicked concept of sustainability' acknowledges the breadth of the human experience of sustainability, which cannot be internalised in a model. To achieve socially desirable sustainability goals, our model-based approach can inform reflective evaluation processes that connect with the needs and values of agricultural decision-makers. Hence, it can help to frame meaningful discussions, from which actions might emerge.

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Soil sustainability indicators following conservation tillage practices under subtropical maize and bean crops

Cited by 102 publications

References 44 publications

Effect of different plant densities on the diversity of arbuscular mycorrhizal fungi community in a long-term maize monocrop system

Effect of different plant densities on the diversity of arbuscular mycorrhizal fungi community in a long-term maize monocrop system

Conservation Agriculture and Soil Quality– An Overview

Assessing the sustainability of wheat-based cropping systems using simulation modelling: sustainability = 42?

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