Long-term soil quality decline due to the conventional tobacco tillage in Southern Brazil

Thomaz, Edivaldo Lopes; Antoneli, Valdemir

doi:10.1080/03650340.2020.1852550

Cited by 14 publications

(11 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This inconsistency was probably due to the different soil textures and land uses under investigation, which can result in varying soil structures, thereby transport behaviors of water and solute (Luo et al., 2010; Schwartz et al., 2003; Schwen et al., 2014). In contrast to grasslands and farmlands planted with grain crops, the tobacco fields as investigated here are characterized by heavy textured soil (Table 1), intensive tillage, elevated bulk density, degraded soil structure, and decreased macroporosity (Thomaz & Antoneli, 2021; Zou et al., 2015), which are not favorable for preferential macropore flow. Notwithstanding, the sampling interval of 3.3 m was larger than those employed in most previous studies, for example, 0.5 m in Wendroth et al.…”

Section: Discussionmentioning

confidence: 99%

Effects of rainfall characteristics on bromide leaching in a typical tobacco field in China's Yunnan Province

Zou

Zhang

Yang

et al. 2023

Soil Science Soc of Amer J

View full text Add to dashboard Cite

Knowledge about water and solute transport in the vadose zone is critical for agrochemical management, especially for the tobacco cultivation characterized by extensive fertilizer and pesticide applications. Under the field conditions, however, natural soil heterogeneity complicates and limits the analysis of water and solute transport. Applying the scale-dependent treatment distribution in a rainfall simulation experiment, the objective was to evaluate the impact of rainfall characteristics on bromide (Br − ) leaching in a typical tobacco field in China's Yunnan Province. On a transect established with 24 plots, rainfall amount, intensity, and time delay relative to solute application were arranged in cyclic patterns at different spatial scales.Soil samples in 10-cm increments down to 50 cm depth were collected for Br − determination after the simulated rainfall. The results display a significantly decreasing trend of Br − concentration with depth, suggesting the predominance of matrix diffusion over preferential flow at the scale of investigation in the intensively cultivated tobacco field. The Pearson correlation analysis only detected significant associations of Br − with rainfall intensity at the 0-10 cm depth and with rainfall amount at the 20-30 cm. With the aid of frequency-domain analysis, by comparison, strong spatial correlations were revealed with rainfall characteristics at each depth, even with the presence of a plow pan at the depth of 30-40 cm due to deep tillage. Although the dominant control of Br − distribution varied with depth, these findings demonstrate the profound effects of rainfall characteristics on solute leaching and the usefulness of scale-dependent treatment distribution in field-scale investigations of solute transport as well as other hydrological processes.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of rainfall characteristics on bromide leaching in a typical tobacco field in China's Yunnan Province

Zou

Zhang

Yang

et al. 2023

Soil Science Soc of Amer J

View full text Add to dashboard Cite

show abstract

“…In this study, the total soil loss during the tobacco cultivation was 62.7 Mg ha −1 (on‐site effect). This, therefore, implies that soil CA practices at the properties level must be urgently adopted (Thomaz & Antoneli, 2020). Moreover, tobacco cultivation is recognized as an important source of sediment and contaminants beyond the farm boundary (Benham et al, 2007; Melquiades et al, 2018; Merten & Minella, 2006).…”

Section: Discussionmentioning

confidence: 99%

“…The land conversion of regions with agricultural restrictions, that is, steep slope and shallow soils into agricultural area has over time contributed to soil degradation (Squire et al, 2015), particularly in tobacco areas (Reichert et al, 2019; Thomaz & Antoneli, 2020), and has also led to the abandonment of arable land owing to reduced productivity.…”

Section: Introductionmentioning

confidence: 99%

“…Soil preparation and agricultural activities during cultivation produce an adverse effect on the soil surface; change the soil structure (Schillinger et al, 2007), generate substantial alterations on the soil surface hydrology (Dabney et al, 2011), alter the rate of soil erosion (Taconet & Ciarletti, 2007), change the soil aggregates stability (Thomaz & Antoneli, 2020) and cause loss of nutrients (Reichert et al, 2019).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Tobacco harvest phase is critical to runoff and soil loss in conventional tillage system

Antoneli

Bednarz

Thomaz

2022

Soil Use and Management

View full text Add to dashboard Cite

Soil erosion in tobacco (Nicotiana tabacum) cultivation has been reported in recent years around the world. Moreover, studies also demonstrated total soil loss during cultivation. In this study, we proposed an assessment of loss of water and soil during the phases of tobacco cultivation. The tobacco cultivation cycle is approximately 180 days in Southern Brazil. We divided this period into 6 phases from planting (September) to the end of the harvest. During the phases, there were variations in soil management, which may indicate different rates of water and soil loss. Gerlach gutters were used to mediate soil and water loss. At each phase of cultivation, we also measured the surface roughness of the soil, water retention, soil exposure, trampling, soil resistance and soil bulk. Our results show that during cultivation the water and soil loss were 10.2% and 62.7 Mg ha−1, respectively. However, the variation of activities during tobacco cultivation indicates different rates of water and soil loss. In the first three phases (90 days after planting), the surface roughness remained high (~19.2%) due to the soil turning, thus reducing the loss of water and soil despite little ground surface coverage. The soil tillage is stopped when the harvest of tobacco begins 120 days after planting. During the harvest, there was an increase in daily activities in the tobacco field, as the leaves were harvested every week, thus reducing soil roughness (~6.8%) and increasing soil density and strength. These conditions increased the rate of soil erosion during harvest. Therefore, the harvest phase is critical to runoff and soil loss.

show abstract

“…The cultivation of tobacco also demands land with uncovered soil. It is cultivated in September, after the coldest months, in attempt to benefit from the natural hot and regular rainfall (it does not need irrigation in this part of the world) [39], although the highest soil erosion rates have been detected in summer during the harvesting period [40].…”

Section: Discussionmentioning

confidence: 99%

Changes in Water Quality of the River das Antas as It Passes through Rural and Urban Areas

et al. 2021

Self Cite

View full text Add to dashboard Cite

The catchment area of River das Antas (Irati, Paraná, Brazil) is of high importance both for human consumption and irrigation. Within Irati, this river passes through a rural area and through the city of Irati, crossing both poor and rich neighbourhoods. We selected three study areas downstream (a rural area, poor community, and rich neighbourhood) in which we measured turbidity, the concentration of sediments and pH during rainy days. Our results showed downstream trends of increasing turbidity and concentrations of sediments with decreasing pH. The values of turbidity and of concentration of sediments were significantly different in the rural area, while the pH values were significantly different between the three study areas. These findings highlight the effect of agricultural activities in the generation of sediments and turbidity. The—presumably expected—effects of organic urban waste from the poor neighbourhood were also detected in the pH values. We conclude that efforts should be made to ensure that land planning and training/education programmes on sustainable farming practices are undertaken by the authorities to reduce water pollution and its effects on water bodies during rainfall events, since paving streets is not a feasible option in the short term due to the high costs associated with this measure.

show abstract

Long-term soil quality decline due to the conventional tobacco tillage in Southern Brazil

Cited by 14 publications

References 37 publications

Effects of rainfall characteristics on bromide leaching in a typical tobacco field in China's Yunnan Province

Effects of rainfall characteristics on bromide leaching in a typical tobacco field in China's Yunnan Province

Tobacco harvest phase is critical to runoff and soil loss in conventional tillage system

Changes in Water Quality of the River das Antas as It Passes through Rural and Urban Areas

Contact Info

Product

Resources

About