Prediction of trafficability and workability from soil moisture deficit

Earl, Richard A.

doi:10.1016/s0167-1987(96)01072-0

Cited by 73 publications

(60 citation statements)

References 18 publications

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“…The most influential factor in determining the suitability of land for field operations is the soil moisture status. When a soil is trafficked or worked in an unsuitable condition, damage to the soil's structure and the consequent effect on crop production can persist for many years [1]. In mechanised agriculture, high axle loads are the cause of major concern regarding the risk of soil compaction, especially if wheeling and tillage are conducted at high soil moisture content [2,3].…”

Section: Introductionmentioning

confidence: 99%

Soil Tillage Systems and Wheat Yield under Climate Change Scenarios

2016

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Abstract:In this study, the effects of three different main preparatory tillage operations: ploughing at 0.4 m (P40) and 0.20 m (P20) depth and harrowing at 0.20 m depth (MT) were investigated. The tillage operations were carried out at two different times, as the soil water content increased over time from rainfall: (low, 58% (LH) and high, 80% (HH) of field capacity). Results obtained from the soil monitoring carried out before and after tillage showed high values of soil strength in terms of Penetration resistance and shear strength particularly in deeper soil layers at lower water content. During tillage, fossil-fuel energy requirements for P40 LH and P20 LH were 25% and 35% higher, respectively, with respect to the HH treatments and tractor slip was very high (P40 LH = 32.4%) with respect to the P40 HH treatment (16%). Soil water content significantly influenced tractor performance during soil ploughing at 0.40 m depth but no effect was observed for the MT treatment. The highly significant linear relations between grain yield and soil penetration resistance highlight how soil strength may be good indicator of soil productivity. We conclude that ploughing soil to a 0.20 m depth or harrowing soil to a 0.20 m depth is suitable for this type of soil under climate change scenarios.

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Section: Introductionmentioning

confidence: 99%

Soil Tillage Systems and Wheat Yield under Climate Change Scenarios

2016

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“…Apesar de ainda existirem dúvidas sobre valores de resistência do solo à penetração considerados críticos ao desenvolvimento das culturas (Earl, 1997), resultados semelhantes foram obtidos por Grant & Lanfond (1993), os quais sugerem um intervalo de RP com valores superiores a 1,5 e 3,0 MPa como impeditivo ao crescimento radicular. Carvalho et al (2006) relatam que valores de RP variando entre 1,3 e 2,9 MPa não restringiram a produtividade de grãos da cultura do feijão em um Latossolo.…”

Section: Resultsunclassified

Produtividade de culturas e resistência à penetração de Argissolo Vermelho sob diferentes manejos

Lima

Reinert

Reichert

et al. 2010

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a relação entre parâmetros de plantas de soja e feijão e a resistência do solo à penetração de Argissolo Vermelho distrófi co arênico sob semeadura direta e convencional. Em experimento implantado em 1989 em semeadura direta, foram aplicadas diferentes passadas de máquina de 10 Mg e realizados diferentes preparos do solo em delineamento inteiramente casualizado. Foram quantifi cados o índice de velocidade de emergência, o índice de área foliar, a altura e a produtividade de grãos de soja e de feijão e a resistência do solo à penetração. O índice de área foliar, a altura e a produtividade do feijão são infl uenciados pela resistência do solo à penetração em 46, 51 e 59%, respectivamente, enquanto 55% da variação da altura da soja é explicada pela resistência à penetração. Indica-se um valor crítico de resistência à penetração de aproximadamente 1,7 e 1,9 MPa no que se refere ao crescimento e à produtividade de grãos de feijão e de soja, respectivamente.Termos para indexação: Glycine max, Phaseolus vulgaris, plantio convencional, plantio direto. Yield of crops and soil resistance to penetration of the Alfi sol under different managementAbstract -The objective of this work was to evaluate the relationship among soybean and bean plant parameters and soil resistance to penetration of an Alfi sol under no-tillage and conventional systems. In an experiment deployed under no-tillage in 1989, different wheel tracks of a 10-Mg machine were applied and different soil management systems were used in completely randomized design. Emergence speed index, foliar area index, height and yield of soybean and bean crops and soil resistance to penetration were quantifi ed. The infl uence of soil resistance to penetration in foliar area index, height and productivity of beans is of 46, 51 and 59% respectively, whereas 55% of the height variation in soybean is explained by soil resistance to penetration. The critical value of soil resistance to penetration indicated for bean and soybean growth and yield is of approximately 1.7 and 1.9 MPa respectively.

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“…Therefore, the VWC at this depth was below field capacity, defined at a -100 cm water matric potential, for this soil type. Earl (1997) concluded that as VWC decreases below field capacity, trafficability increases. Reasonably, therefore, these results are consistent with this conclusion since corn was planted when the soil was trafficable.…”

Section: Methodsmentioning

confidence: 99%

“…When each plot had a VWC at 10 cm depth below field capacity (Earl 1997), average soil temperature at 10 cm above 10°C (Elmore et al 2014), and a water table deeper than 30 cm (Kanwar et al 1988;Evans et al 1999), the plot was deemed suitable for planting. Using the first day when both drainage plots within a treatment would be suitable for planting, a theoretical target planting date was determined.…”

Section: Methodsmentioning

confidence: 99%

Drainage water management effect on corn planting date in southeast Iowa

Schott¹,

Lagzdiņš²,

Daigh³

et al. 2017

Journal of Soil and Water Conservation

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In Iowa, producers achieve an adequate growing season for high yielding corn (Zea mays L.) by beginning field activities in a timely fashion. Subsurface drainage allows for early field activities by improving trafficability and decreasing excess water stress to crops on poorly drained soils. Drainage water management practices reduce drainage volumes and nitrate (NO 3 ) loss by maintaining the water table closer to the ground surface when compared to conventional drainage systems. The objective of this study was to determine the effect of shallow, controlled, conventional, and no drainage on depth to water table, volumetric water content, and soil temperature during a 51-day period, from mid-April through May, to evaluate if drainage water management practices delay planting. At the Iowa State University Southeast Research Farm near Crawfordsville, Iowa, we evaluated eight large-scale research plots with two replicates for each of the four drainage treatments over the 51-day planting period during 2012 to 2015. Each plot was planted half to soybeans (Glycine max [L.] Merr.) and the other half to corn, and the halves rotated every year in accordance with a typical corn-soybean rotation. Conventional and controlled drainage significantly lowered (p < 0.05) the water table when compared to the undrained treatment over the four-year study period. However, the shallow and undrained treatments significantly increased (p < 0.05) daily average soil temperatures at a 10 cm depth when compared to the conventional and controlled drainage treatments. Drainage treatment did not affect daily volumetric water content, maximum soil temperature, and minimum soil temperature at 10 cm. Overall, drainage treatment did not affect potential planting dates due to similar soil temperatures and volumetric water contents. However, drainage treatment does affect the depth of water table and reduces the risk of excess water stress on the crop during early season periods near planting.

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Prediction of trafficability and workability from soil moisture deficit

Cited by 73 publications

References 18 publications

Soil Tillage Systems and Wheat Yield under Climate Change Scenarios

Soil Tillage Systems and Wheat Yield under Climate Change Scenarios

Produtividade de culturas e resistência à penetração de Argissolo Vermelho sob diferentes manejos

Drainage water management effect on corn planting date in southeast Iowa

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