Soil quality under conservation practices on farm operations of the southern semiarid pampas region of Argentina

Schmidt, Erica Susana; Villamil, María B.; Amiotti, Nilda Mabel

doi:10.1016/j.still.2017.11.001

Cited by 34 publications

(26 citation statements)

References 44 publications

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“…However, the choice of soil indicators and their contribution to soil quality vary according to several factors including climate, intended land use patterns and so on (Karlen et al, 2006). Soil quality was used as a tool to evaluate the effects of soil management practices and tillage systems (Armenise et al, 2013;Hussain et al, 1999;Shukla et al, 2006), land use type (Masto et al, 2008;Rahmanipour et al, 2014), cover crop (Bastida et al, 2006;Fu et al, 2004;Navas et al, 2011) and native ecosystems and grassland degradation (Alves de Castro Lopes et al, 2013;Li et al, 2013) on soil function.…”

Section: Introductionmentioning

confidence: 99%

“…However, the soil quality index should link the scientific knowledge and agricultural and land management practices in order to assess sustainability (Romig et al, 1995). Most of the SQI give more importance to the physical (soil aggregation, water retention) and chemical indicators (carbon dynamics and nutrient carrying capacity) with less importance to biological attributes (microbial biomass carbon, arthropods) (Biswas et al, 2017;Calero et al, 2018;de Paul Obade and Lal, 2016;Lima et al, 2013;Menta et al, 2018;Paz-Kagan et al, 2014;Pulido et al, 2017;Qi et al, 2009;Raiesi, 2017;Schmidt et al, 2018;Vasu et al, 2016). In order to emphasize the biological and biochemical attributes to soil quality, the biological quality of soil (BSQ) was first proposed by Parisi (2001) which used to measure the bioindicators of soil, especially the arthropods of soil.…”

Section: Introductionmentioning

confidence: 99%

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Development of soil biological quality index for soils of semi-arid tropics

Aravindh¹,

Chinnadurai²,

Balachandar³

2019

Preprint

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Abstract. The Agricultural intensification, an inevitable process to feed the ever-increasing population, affects the soil quality due to management-induced changes. To measure the soil quality in terms of the soil functioning, several attempts were made to develop the soil quality index (SQI) based on a set of soil attributes. However, there is no universal consensus protocol available for SQI and the role of soil biological indicators in SQI is meagre. Therefore, the objective of the present work is to develop a unitless soil biological quality index (SBQI) scaled between 0 and 10, which would be a major component of SQI in future. The long-term organic manure amended (OM), integrated nutrient management enforced (INM), synthetic fertilizer applied (IC) and unfertilized control (Control) soils from three different predominant soil types with three different cropping patterns of the location (Tamil Nadu state, India) were chosen for this. The soil organic carbon, microbial biomass carbon, labile carbon, protein index, dehydrogenase activity and substrate-induced respiration were used to estimate the SBQI. Five different SBQI methods viz., simple additive (SBQI-1 and SBQI-2), scoring function (SBQI-3), principal component analysis-based statistical modeling (SBQI-4) and quadrant-plot based method (SBQI-5) were developed to estimate the biological quality as unitless scale. All the five methods have same resolution to discriminate the soils and INM ≈ OM > IC > Control is the relative trend being followed in all the soil types based on the SBQIs. All the five methods were further validated for their efficiency in 25 farmers' soils of the location and proved that these methods can be effectively used to scale the biological health of the soil. Among the five SBQIs, we recommend SBQI-5, which relates the variables to each other to scale the biological health of the soil.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of soil biological quality index for soils of semi-arid tropics

Aravindh¹,

Chinnadurai²,

Balachandar³

2019

Preprint

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“…This was probably due to the roots of the pivotal type, which provide the presence of biological pores, decomposition of the same associated to the non-revolving soil, as reported Reinert, et al [27]. According to Schmidt, et al [17] the conservationist systems provided increased soil fertility, especially in relation to the exchangeable bases and soil organic matter content, motivated by legume species that favored increases. Thus, although compaction has occurred as discussed above.…”

Section: Resultsmentioning

confidence: 75%

“…It is observed that the layer 50-100 mm deep showed significant differences in MRP values, and the sunflower culture associated with CC provided higher MRP values. The degradation of the soil structure along the profile can be attributed to the intensive use of agricultural mechanization adopted in CC [16], resulting in soil compaction as a function of plowing and operations by grading [17]. These operations performed at the same depth and direction in the soil even though associated with favorable soil moisture can increase soil compaction [18].…”

Section: Resultsmentioning

confidence: 99%

Soil Mechanical Resistance Penetration after Fifteen Years with Previous Crops and Tillage Systems and Productivity of Green Corn Cob in Northeast Brazil

Pedrotti

Filho

Assunção

et al. 2019

JEAI

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Conservation systems for less soil movement and when associated with previous crops may reduce the effects of soil compaction. The objective of this work was to evaluate soil mechanical resistance penetration (MRP) in different cropping systems associated with previous corn crop after fifteen years. The experimental design was composed of experimental strips with subdivided plots, combining three soils management systems: CC- conventional cultivation, MC- minimum cultivation and NT- no-tillage, and four species of crops antecedent to maize for the production of commercial ears of green corn. In the determination of soil MRP, the electronic penetrometer (FALKER model SoloTrack PLG 5200) was used, with readings up to a depth of 400 mm. The results showed that there was a significant effect on the MRP values of the soil when submitted to the different cropping systems and previous crops at the end of fifteen years. The lowest MRP values were located in the superficial layers in the CC and MC. The NT cultivar system showed higher MRP values, at depth 0-100 mm. At conditions of tableland, after fifteen years, it was observed that the NT system provides better corn productivity levels combined with lower MRP values along the profile.

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“…Furthermore, 74 converting from conventional tillage (plough tillage, CT) to NT alone can potentially increase 75 SOC at a rate of 0.1-1 Mg C ha −1 yr −1 (Lal, 2004a). In addition, NT can improve soil structural 76 stability, soil nutrient availability, and water holding capacity (Blanco-Canqui and Ruis, 2018; 77 Schmidt et al, 2018), which eventually lead to greater crop productivity and SOC 78 sequestration. However, a global analysis in 2010 indicated that NT benefits SOC only in the 79 top 10 cm (Luo et al, 2010).…”

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confidence: 99%