Soil Organic Matter under Long-Term No-Tillage and Conventional Tillage Corn Production in Kentucky

Soil organic matter under different tillage and fertilisation systems of long-term fallow experiment established in 1958 in Prague was characterised in period of 1972–2004. This experiment consists of seven variants (control (no tillage, no manuring); farmyard manure compost (FYM); 2FYM; mineral fertilisation (NPK); 2NPK; reduced tillage (RT), and conventional tillage (CT)). In 1989, regular manuring and tillage were terminated and since then the plots have been maintained bare. Organic carbon content (Cox) was analysed and the hydrophobic (A) and hydrophilic (B) functional groups were determined using Fourier-transform infrared (FTIR) spectroscopy. Hydrophobicity index (HI) and soil wettability (A/B ratio) were assessed in the experimental variants. A high significant positive correlation (r = 0.976; P < 0.05) was found, between hydrophobic functional groups (Band A) and Cox, hydrophilic functional groups (Band B) did not correlate with Cox. Soil wettability tended to decrease after the organic manuring was finished with the result that the values of A/B ratio were significantly different according to the farmyard manure doses applied. On the contrary, HI responded to organic manuring termination later on and no significant differences were found between different farmyard manure doses. In the variants without any fertilisation, a continual decrease in both soil wettability and hydrophobicity during the selected time period was found; the degradation process is going on in these variants.

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Long-term no-tillage effects on particulate and mineral-associated soil organic matter under rainfed Mediterranean conditions

Soil Use and Management ◽

10.1111/sum.12039 ◽

2013 ◽

Vol 29 (2) ◽

pp. 250-259 ◽

Cited By ~ 28

Author(s):

N. Blanco-Moure ◽

R. Gracia ◽

A. C. Bielsa ◽

M. V. López

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

No Tillage ◽

Mediterranean Conditions

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Long-term Impact of No Tillage in Two Intensified Crop Rotations on Different Soil Organic Matter Fractions in Argentine Rolling Pampa

The Open Agriculture Journal ◽

10.2174/1874331501307010022 ◽

2013 ◽

Vol 7 (1) ◽

pp. 22-31 ◽

Cited By ~ 3

Author(s):

A. Irizar

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Crop Rotations ◽

No Tillage ◽

Soil Organic Matter Fractions ◽

Organic Matter Fractions ◽

Long Term Impact

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Evaluation of Soil Management Effect on Crop Productivity and Vegetation Indices Accuracy in Mediterranean Cereal-Based Cropping Systems

Sensors ◽

10.3390/s20123383 ◽

2020 ◽

Vol 20 (12) ◽

pp. 3383 ◽

Cited By ~ 2

Author(s):

Roberto Orsini ◽

Marco Fiorentini ◽

Stefano Zenobi

Keyword(s):

Organic Matter ◽

Durum Wheat ◽

Precision Agriculture ◽

Vegetation Index ◽

Soil Management ◽

Conventional Tillage ◽

Nutrition Status ◽

No Tillage ◽

Vegetation Indexes

Mostly, precision agriculture applications include the acquisition and elaboration of images, and it is fundamental to understand how farmers’ practices, such as soil management, affect those images and relate to the vegetation index. We investigated how long-term conservation agriculture practices, in comparison with conventional practices, can affect the yield components and the accuracy of five vegetation indexes. The experimental site is a part of a long-term experiment established in 1994 and is still ongoing that consists of a rainfed 2-year rotation with durum wheat and maize, where two unfertilized soil managements were repeated in the same plots every year. This study shows the superiority of no tillage over conventional tillage for both nutritional and productive aspects on durum wheat. The soil management affects the vegetation indexes’ accuracy, which is related to the nitrogen nutrition status. No-tillage management, which is characterized by a higher content of soil organic matter and nitrogen availability into the soil, allows obtaining a higher accuracy than the conventional tillage. So, the users of multispectral cameras for precision agriculture applications must take into account the soil management, organic matter, and nitrogen content.

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Soil physical attributes and organic matter accumulation under no-tillage systems in the Cerrado

Soil Research ◽

10.1071/sr19047 ◽

2019 ◽

Vol 57 (7) ◽

pp. 712

Author(s):

J. L. R. Torres ◽

J. C. Mazetto Júnior ◽

J. Silva Júnior ◽

D. M. S. Vieira ◽

Z. M. Souza ◽

...

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Crop Production ◽

Conventional Tillage ◽

Native Forest ◽

Organic Carbon Content ◽

No Tillage ◽

Deep Soil ◽

Tillage Systems ◽

Physical Attributes

Soil management has a major effect on soil physical characteristics, and consequently on soil organic matter (SOM) content, which are important for the success of crop production. The aim of this study was to evaluate the soil physical attributes and the accumulation of SOM in no-tillage systems (NTS) with different periods of implantation in a conventional tillage area and to compare them with native forest (NF) in the Cerrado biome. The experiment was planned in a 3 × 4 factorial scheme, consisting of three soil treatments (NTS for 17 years (NTS17), NTS for 5 years (NTS5) and NF) and four soil depths (0–0.1, 0.1–0.2, 0.2–0.3 and 0.3–0.4 m), with a completely randomised design and four replicates. At deep soil layers (0.2–0.4 m) the NTS17 area had a greater soil density than the NTS5 and NF areas, and greater SOM compared with the NTS5 area. Soil macroporosity in the NTS5 area was below 10% at all soil depths evaluated. The NF area had the greatest total organic carbon content (1.39 dag kg–1), stock of carbon (16.63 Mg ha--1), amount of soil organic matter (28.66 Mg ha--1) and equivalent carbon credits (60.96 Mg ha–1). Carbon stocks were similar in the NTS areas in all soil depths evaluated. The results indicate that conventional tillage areas can be successfully recovered under the Cerrado edaphoclimatic conditions with the implantation of an NTS.

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