Long-term influence of leguminous cover crops on the biochemical properties of a sandy clay loam Fluventic Sulfaquent in a humid tropical region of India

SummarySoils were analysed from two long-term liming experiments on a sandy-clay loam at Rothamsted and a loamy sand at Woburn. Plots given four levels of limestone factorially combined with phosphate and potassium fertilizers (with magnesium subplots in 1974) were cropped with beans, barley, potatoes and oats from 1963 to 1974.The smallest limestone applications (5 t CaCO3/ha) increased soil pH the following year to values predicted by lime-requirement determinations using a standard advisory method. The larger limestone applications (10 and 20 t/ha) increased pH proportionally less. Soil pH decreased after the first year with 5 t/ha in both experiments but increased at the 20 t/ha rate for 6 years in the sandy-clay loam and for 3 years in the loamy sand before starting to decline.Exchangeable calcium (soluble in N ammonium acetate) decreased at approximately linear rates in all plots of both experiments from the first year. Slopes of the regressions were smaller at low than at higher rates of liming, depending primarily on the average pH. Rates of CaCO3 losses from the surface 23 cm of soil ranged from 225 to 823 kg/ha per year at Rothamsted and from 307 to 852 kg/ha per year at Woburn.Observed rates of Ca loss were compared with an empirical relationship suggested by Gasser (1973) between annual Ca losses and soil pH under average rainfall conditions and estimates based on a model system.

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Is chiseling or inverting tillage required to improve mechanical and hydraulic properties of sandy clay loam soil under long-term no-tillage?

Geoderma ◽

10.1016/j.geoderma.2017.04.012 ◽

2017 ◽

Vol 301 ◽

pp. 72-79 ◽

Cited By ~ 17

Author(s):

José Miguel Reichert ◽

André Anibal Brandt ◽

Miriam Fernanda Rodrigues ◽

Milton da Veiga ◽

Dalvan José Reinert

Keyword(s):

Hydraulic Properties ◽

No Tillage ◽

Clay Loam ◽

Clay Loam Soil ◽

Sandy Clay Loam ◽

Sandy Clay ◽

Loam Soil

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Effects of Woody Compost and Biochar Amendments on Biochemical Properties of the Wind Erosion Afflicted a Calcareous and Alkaline Sandy Clay Loam Soil

Communications in Soil Science and Plant Analysis ◽

10.1080/00103624.2020.1862148 ◽

2021 ◽

pp. 1-12

Author(s):

Noel Manirakiza ◽

Cevdet Şeker ◽

Hamza Negiş

Keyword(s):

Wind Erosion ◽

Biochemical Properties ◽

Clay Loam ◽

Clay Loam Soil ◽

Sandy Clay Loam ◽

Sandy Clay ◽

Loam Soil

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Degradation of oxyfluorfen in sandy clay loam soil

International Journal of Chemical Studies ◽

10.22271/chemi.2020.v8.i6o.10901 ◽

2020 ◽

Vol 8 (6) ◽

pp. 1038-1041

Author(s):

C Bharathi ◽

P Murali Arthanari ◽

C Chinnusamy

Keyword(s):

Clay Loam ◽

Clay Loam Soil ◽

Sandy Clay Loam ◽

Sandy Clay ◽

Loam Soil

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Comparison of oxidoreductive enzyme activities in three coal tar creosote-contaminated soils

Soil Research ◽

10.1071/sr19040 ◽

2019 ◽

Vol 57 (8) ◽

pp. 814 ◽

Cited By ~ 2

Author(s):

Arkadiusz Telesiński ◽

Teresa Krzyśko-Łupicka ◽

Krystyna Cybulska ◽

Barbara Pawłowska ◽

Robert Biczak ◽

...

Keyword(s):

Contaminated Soils ◽

Sandy Loam ◽

Coal Tar ◽

Loamy Sand ◽

Clay Loam ◽

Oxidoreductase Activity ◽

Sandy Clay Loam ◽

Sandy Clay ◽

Polycyclic Aromatic ◽

Negative Effect

This study used laboratory experiments to compare the effects of coal tar creosote on the activity of oxidoreductive enzymes in sandy loam, loamy sand and sandy clay loam soils. Different amounts of coal tar creosote were added to soil samples as follows: 0 (control), 2, 10 or 50 g kg–1 dry matter. The activity of soil dehydrogenases (DHAs), o-diphenol oxidase (o-DPO), catalase (CAT), nitrate reductase (NR) and peroxidases (POX) was determined. Contamination of soil with coal tar creosote affected oxidoreductase activity. Oxidoreductive enzyme activity following soil contamination with coal tar creosote was in the following order: DHAs > CAT > NR > POX > o-DPO in loamy sand and in sandy loam; and DHAs > POX > CAT > NR > o-DPO in sandy clay loam. The index of soil oxidoreductive activity (IOx) introduced in this study confirms the negative effect of coal tar creosote on oxidoreductase activity in soil. DHAs were the most sensitive to the contamination of soil with coal tar creosote. Moreover, the greatest changes in oxidoreductase activities were observed in loamy sand. Knowledge of the mechanism underlying the effects of coal tar creosote on oxidoreductive processes may enable development of a method for the bioremediation of polycyclic aromatic hydrocarbon-contaminated soils.

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