Long-term effects of tillage on stratification and plant availability of phosphate and potassium in a loess chernozem

Deubel, Annette; Hofmann, B.; Orzessek, Dieter

doi:10.1016/j.still.2011.09.001

Cited by 108 publications

(72 citation statements)

References 36 publications

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“…1b) was in line with Deubel et al (2011) and Zorn et al (2011). The increased P contents in the surface soil and thus reduced P contents in the subsurface soil of NT systems may result in reduced P availabilities for crops, especially in periods, where the surface soil is dried out and P side-root dressing may be required (Zorn et al, 2011).…”

Section: Crop Yields Labile P and Cal-p Status Of The Sitessupporting

confidence: 87%

“…Tillage also mixes the soil to a certain depth, preventing a stratification within the tilled soil layer (Vu et al, 2009). The effect of tillage on the distribution of P in the soil profile has been studied in detail, whereas its effect on the different P pools has received less attention (O'Halloran, 1993;Redel et al, 2007;Vu et al, 2009;Deubel et al, 2011;Messiga et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Long‐term tillage effects on the distribution of phosphorus fractions of loess soils in Germany

Piegholdt

Geisseler

Koch³

et al. 2013

Z. Pflanzenernähr. Bodenk.

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Different tillage systems may affect P dynamics in soils due to differently distributed plant residues, different aggregate dynamics and erosion losses, but quantitative data are scarce. Objectives were to investigate the effect of tillage on the availability of P in a long-term field trial on loess soils (Phaeozems and Luvisols) initiated from 1990 to 1997. Four research sites in E and S Germany were established with a crop rotation consisting of two times winter wheat followed by sugar beet. The treatments were no-till (NT) without cultivation, except for seedbed preparation to a depth of 5 cm before sugar beet was sown and conventional tillage (CT) with mouldboard plowing down to 25-30 cm. Soil P was divided into different pools by a sequential extraction method, and total P (P t ) in the single P fractions was extracted by digesting the extracts of the fractionation to calculate the contents of organic P. The P t content (792 mg [kg soil] -1 ) in the topsoil (0-5 cm) of NT was 15% higher compared to CT, while with increasing depth the P t content decreased more under NT than under CT. This was also true for the other P fractions except for residual P. The higher P contents in the topsoil of NT presumably resulted from the shallower incorporation of harvest residues and fertilizer P compared to CT, whereas estimated soil losses and thus also P losses due to water erosion were only small for both treatments. Contents of oxalate-extractable Fe and organic C were positively related to the labile fractions of inorganic P, while there was a high correlation of the stable fractions with the clay contents and pH. Multiple regression analyses explained 50% of the variability of these P fractions. Overall, only small differences in the P fractions and availability were observed between the long-term tillage treatments.

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Section: Crop Yields Labile P and Cal-p Status Of The Sitessupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Long‐term tillage effects on the distribution of phosphorus fractions of loess soils in Germany

Piegholdt

Geisseler

Koch³

et al. 2013

Z. Pflanzenernähr. Bodenk.

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“…It can be seen that the bulk density and the amount of aggregates smaller than 5 mm have a slight tendency to increase after tillage, while the opposite is observed in terms of gravimetric moisture. A higher accumulation of moisture in the areas with no tillage operation is consistent with the evaporation reduction effect of undisturbed vegetation (DEUBEL et al, 2011). Also, the increase in the contents of fine aggregates can be related to higher values of bulk density due to better packing and accommodation of the particles in the soil.…”

Section: Soil Analysissupporting

confidence: 73%

Wear of rotary plows operating in a tropical clay loam soil

2013

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ABSTRACT:The wear resistance of rotary plows operating in a clay loam soil was studied. The degree of damage caused to the soil and the amount of mass lost by the tools were determined in order to establish correlations between the physical properties of the soil and the wear mechanisms acting on the tribosystem. Field tests were carried out in 12 plots and a randomized experimental design with 4 levels, 3 replicas per level and 2 passes per plot was applied. The levels relate to the tillage implements employed: rotary tiller, rotary power harrow, small motorized rotary tiller and control (unaltered soil). The highest mass losses were measured in rotary tiller and rotary power harrow's tools, while the small motorized rotary tiller's tools showed generally lower levels of damage. It was determined that the effective contact time between tool and soil, the rotating speed and the sudden impact forces are the most significant factors affecting the wear resistance in field operations. Thirty days after tillage operation the soil samples were taken from each plot at a mean depth of 100 mm in order to determine bulk density, gravimetric moisture content and percentage of aggregates smaller than 5 mm. No significant differences among the values of these properties were found in the experiments. The wear mechanisms acting on the tools' surface are complex and include 2-body and 3-body abrasion as well as the presence of sudden impact forces.

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“…In some instances, CA increased yield by improving soil fertility through soil and water conservation and sequestering organic carbon (Holland, 2004 andGovaerts et al, 2007). While under some instances, CA may have detrimental impacts on crop yield by altering soil physiochemical and biological conditions, such as decreasing soil temperatures in high latitude areas and seasons with low temperature and higher insect and disease incidence (Boomsma et al, 2010;Kaschuk et al, 2010 andDeubel et al, 2011). As all the yield attributing characters as number of effective tillers per square meter, number of grains per spike and thousand grain weight is higher for earlier sowing at 14 th November, it is obvious and logically correct to have significantly greater grain yield than sowing at 29 th November followed by 14 th December.…”

Section: Harvest Indexmentioning

confidence: 99%

Response of Wheat Cultivars in Different Agricultural Practices Differed by Sowing Date

Acharya

Marahatta

Amgain

2017

Int J Appl Sci Biotechnol

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A field experiment with three wheat varieties at different sowing dates on two crop establishment methods was accomplished to identify the optimum sowing date at AFU Rampur during winter season of 2014/2015. Three wheat varieties namely: Tillotama, Danfe and Vijay sown on three dates: 14 th November, 29 th November, and 14 th December under two crop establishment practices: Conservational and conventional agriculture were evaluated with strip -split plot design in three replications. The field data on yield attributes and yields were collected. Earlier sowing on 14 th November gave the highest yield (3427.15 kg ha -1 ), total dry matter (8154.44 kg ha -1 ), with longest days to crop maturation (133.11 days). In case of varieties, Vijay gave the highest grain yield (3458.61 kg ha -1 ) and total dry weight (4456.11 and 8832.42 kg ha -1 respectively) with earliest days to heading and maturity. The straw yield was the highest for 29 th November sowing (5821 kg ha -1 ) and for Danfe variety (5756 kg ha -1 ). Vijay variety recorded the highest thousand grains weight (43.60 g) and highest harvest index (35.89%) even though with the lowest effective tillers per square meter (320.83), it proved to be the most promising variety.

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Long-term effects of tillage on stratification and plant availability of phosphate and potassium in a loess chernozem

Cited by 108 publications

References 36 publications

Long‐term tillage effects on the distribution of phosphorus fractions of loess soils in Germany

Long‐term tillage effects on the distribution of phosphorus fractions of loess soils in Germany

Wear of rotary plows operating in a tropical clay loam soil

Response of Wheat Cultivars in Different Agricultural Practices Differed by Sowing Date

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