Effects of long-term compost and fertilizer application on stability of aggregate-associated organic carbon in an intensively cultivated sandy loam soil

2011 ◽  
Vol 48 (3) ◽  
pp. 325-336 ◽  
Author(s):  
Hongyan Yu ◽  
Weixin Ding ◽  
Jiafa Luo ◽  
Ruilin Geng ◽  
Anwar Ghani ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Sandy Loam ◽  
Fertilizer Application ◽  
Sandy Loam Soil ◽  
Loam Soil

Long term fertilization effects on soil organic carbon pools in a sandy loam soil of the Indian sub-Himalayas

2010 ◽  
Vol 341 (1-2) ◽  
pp. 109-124 ◽  
Author(s):  
Ranjan Bhattacharyya ◽  
Samaresh Kundu ◽  
Anil Kumar Srivastva ◽  
Hari Shankar Gupta ◽  
Ved Prakash ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Carbon Pools ◽  
Loam Soil ◽  
Soil Organic Carbon Pools ◽  
Fertilization Effects

Long‐Term Persistence of Picloram in a Sandy Loam Soil

1979 ◽  
Vol 8 (1) ◽  
pp. 83-86 ◽  
Author(s):  
J. D. Fryer ◽  
P. D. Smith ◽  
J. W. Ludwig
Keyword(s):  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Loam Soil

Surface physical properties of a sandy loam soil under different tillage practices

Soil Research ◽  
1988 ◽  
Vol 26 (3) ◽  
pp. 549 ◽  
Author(s):  
KY Chan ◽  
JA Mead
Keyword(s):  
Organic Carbon ◽  
Physical Properties ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Organic Carbon Content ◽  
Moisture Profile ◽  
Tillage Practices ◽  
Pasture Soil ◽  
Cultivated Soil ◽  
Loam Soil

The infiltration behaviour and physical properties of a hardsetting sandy loam soil at Cowra, N.S.W., following 2 years of different tillage treatments are reported. Soil that had not been cultivated for 25 years was also investigated at an adjacent pasture site. Infiltration of simulated rainfall at the end of the wheat-growing season gave moisture profiles that were quite different for cultivated, direct drilled and pasture soils. The moisture profile for the cultivated soil suggested the presence of an impeded layer which retarded the movement of infiltrated rain to the subsoil. Porosity measurements confirmed the presence of a layer with significantly fewer macropores (> 300 �m diameter) at the 50-100 mm depth in the cultivated soil, when compared with the direct drilled soil. The old pasture soil had significantly higher porosity (> 300 �m diameter) in the top 100 mm. Aggregate stabilities and organic carbon contents were measured in narrow increments to 150 mm depth for the three different soils, and revealed that a surface 25 mm layer of high organic carbon and highly stable macro-aggregates was present in the pasture and direct drilled soils but absent in the cultivated soil. The unstable surface layer in the conventionally cultivated soil was a consequence of the mixing and inverting action of cultivation and was not due to a net loss of organic carbon from the profile. The organic carbon content of the pasture soil was not significantly different from the direct drilled soil below 50 mm; however, it was significantly lower than the conventionally cultivated soil between 50 and 150 mm depth. These results indicate a need to adopt tillage practices that can preserve the top 25 mm layer of such fragile soils.

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