scholarly journals The potential use of cover crops for building soil quality and as trap crops for stinkbugs in sub-tropical fruit orchards: Knowledge gaps and research needs

2014 ◽  
Vol 9 (19) ◽  
pp. 1522-1529
Author(s):  
N. Steyn J. ◽  
E. Crafford J. ◽  
vdM. Louw S. ◽  
R. Gliessman S.
Keyword(s):  
Soil Quality ◽  
Cover Crops ◽  
Research Needs ◽  
Knowledge Gaps ◽  
Tropical Fruit ◽  
Trap Crops ◽  
Fruit Orchards ◽  
Potential Use

Labile carbon and other soil quality indicators in two tillage systems during transition to organic agriculture

2011 ◽  
Vol 26 (4) ◽  
pp. 342-353 ◽  
Author(s):  
David Bruce Lewis ◽  
Jason P. Kaye ◽  
Randa Jabbour ◽  
Mary E. Barbercheck
Keyword(s):  
Soil Quality ◽  
Cover Crops ◽  
Organic Agriculture ◽  
Weed Management ◽  
Cover Crop ◽  
Transition Period ◽  
Interactive Effects ◽  
Labile Carbon ◽  
Initial Field ◽  
Soil Attributes

AbstractWeed management is one of the primary challenges for producers transitioning from conventional to organic agriculture. Tillage and the use of cover crops are two weed control tactics available to farmers transitioning to organic management, but little is known about their interactive effects on soil quality during the transition period. We investigated the response of soils to tillage and initial cover crop during the 3-year transition to organic in a cover crop–soybean (Glycine max)–maize (Zea mays) rotation in the Mid-Atlantic region of the USA. The tillage treatment contrasted full, inversion tillage with moldboard plowing (FT) versus reduced tillage with chisel plowing (RT). The cover crop treatment contrasted annual versus mostly perennial species during the first year of the rotation. The experiment was initiated twice (Start 1 and Start 2), in consecutive years in adjacent fields. By the end of the experiment, labile carbon, electrical conductivity, pH and soil moisture were all greater under RT than under FT in both starts. Soil organic matter and several other soil attributes were greater under RT than under FT in Start 1, but not in Start 2, perhaps owing to differences between starts in initial field conditions and realized weather. Soil attributes did not differ between the two cover crop treatments. Combining our soils results with agronomic and economic analyses on these plots suggests that using RT during the organic transition can increase soil quality without compromising yield and profitability.

Agricultural water pollution: key knowledge gaps and research needs

2019 ◽  
Vol 36 ◽  
pp. 20-27 ◽  
Author(s):  
Alexandra EV Evans ◽  
Javier Mateo-Sagasta ◽  
Manzoor Qadir ◽  
Eline Boelee ◽  
Alessio Ippolito
Keyword(s):  
Water Pollution ◽  
Research Needs ◽  
Agricultural Water ◽  
Knowledge Gaps

scholarly journals Physical properties and particle-size fractions of soil organic matter in crop-livestock integration

2012 ◽  
Vol 36 (4) ◽  
pp. 1299-1310 ◽  
Author(s):  
Carolina Tirloni ◽  
Antonio Carlos Tadeu Vitorino ◽  
Anderson Cristian Bergamin ◽  
Luiz Carlos Ferreira de Souza
Keyword(s):  
Organic Matter ◽  
Soil Quality ◽  
Crop Rotation ◽  
Cover Crops ◽  
Chemical Properties ◽  
Environmental Stability ◽  
Native Forest ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

Crop-livestock integration represents an interesting alternative of soil management, especially in regions where the maintenance of cover crops in no-tillage systems is difficult. The objective of this study was to evaluate soil physical and chemical properties, based on the hypothesis that a well-managed crop-livestock integration system improves the soil quality and stabilizes the system. The experiment was set up in a completely randomized design, with five replications. The treatments were arranged in a 6 x 4 factorial design, to assess five crop rotation systems in crop-livestock integration, and native forest as reference of soil undisturbed by agriculture, in four layers (0.0-0.05; 0.05-0.10; 0.10-0.15 and 0.15-0.20 m). The crop rotation systems in crop-livestock integration promoted changes in soil physical and chemical properties and the effects of the different systems were mainly detected in the surface layer. The crops in integrated crop-livestock systems allowed the maintenance of soil carbon at levels equal to those of the native forest, proving the efficiency of these systems in terms of soil conservation. The systems influenced the environmental stability positively; the soil quality indicator mineral-associated organic matter was best related to aggregate stability.

scholarly journals Advances in ozonation and biodegradation processes to enhance chlorophenol abatement in multisubstrate wastewaters: a review

2019 ◽  
Vol 5 (3) ◽  
pp. 444-481 ◽  
Author(s):  
P. Van Aken ◽  
N. Lambert ◽  
R. Van den Broeck ◽  
J. Degrève ◽  
R. Dewil
Keyword(s):  
Research Needs ◽  
Knowledge Gaps

The objective of this study is to emphasize relevant knowledge gaps and research needs regarding chlorophenol degradation by applying biological and/or ozone-based oxidation techniques.

Sign in / Sign up

Export Citation Format

Share Document