نتایج جستجو برای: inversion tillage

تعداد نتایج: 50577  

2017
Maysoon M. Mikha Joseph G. Benjamin Merle F. Vigil David J. Poss

Soil loss through wind and water erosion is an ongoing problem in semiarid regions. A thin layer of top soil loss over a hectare of cropland could be corresponding to tons of productive soil loss per hectare. The objectives of this study were to evaluate the influence of beef feedlot manure, tillage and legume grass mixtures on changes in soil quality and nutrient components. The study was init...

2016
Neal Robert Haddaway Katarina Hedlund Louise E. Jackson Thomas Kätterer Emanuele Lugato Ingrid K. Thomsen Helene B. Jørgensen Per‐Erik Isberg

Background: Soils contain the greatest terrestrial carbon (C) pool on the planet. Since approximately 12 % of soil C is held in cultivated soils, management of these agricultural areas has a huge potential to affect global carbon cycling; acting sometimes as a sink but also as a source. Tillage is one of the most important agricultural practices for soil management and has been traditionally un...

2015

The objectives were to promote farmer adoption of reduced and modified tillage (RT) systems and to investigate the efficacy of deep zone tillage systems to reduce the disease severity in crops affected by Phytophthora capcisi. It was our intent to evaluate the ability of reduced tillage (RT) systems to ameliorate large fluctuations in water supply, which may result from climate change and, in p...

Journal: :Journal of environmental quality 2014
Bijesh Maharjan Rodney T Venterea

Anhydrous ammonia (AA) is a major fertilizer source in North America that can promote greater emissions of nitrous oxide (NO) than other nitrogen (N) fertilizers. Previous studies found that injection of AA at a shallow depth (0.1 m) decreased NO in a rainfed clay loam but increased NO in an irrigated loamy sand compared with the standard injection depth of 0.2 m. The objective of this study wa...

2002
J. A. Baldwin A. K. Culbreath S. Jones

The object of this experiment was to determine the response of peanut when planting in single or twin row patterns by strip tillage or no tillage methods. During 1997 and 1998 the peanut cultivars "Georgia Green" and "Georgia Runner" or "Georgia Green" and "Georgia Bold" (Arachis hypogaea L.) were planted in 9.5 or 9.0 inch twin row patterns versus 36 inch single rows at the same seeding rate (...

2013
Q.Yang X. Wang Y. Shen

The effects of long term no-till and crop residue on soil microbial community catabolic function and relevant carbon cycle in the rhizosphere and bulk soils were assessed in the 10th year of a maize-winter wheat-soybean crop rotation. Conventional and zero tillage were coupled with residue removal and residue retention in a factorial design. Soil microbial community catabolic diversity was dete...

2000
N. C. Hansen S. C. Gupta J. F. Moncrief

In cold climates, snowmelt runoff often exceeds rainfall runoff during the year. Conservation tillage practices may be effective in reducing runoff during the cropping season but not during the snowmelt period. A plot study was conducted on a cropped hillslope to assess how tillage practices affect snowmelt runoff and the associated losses of sediment, phosphorus (P), and chemical oxygen demand...

Journal: :Scientific reports 2015
Chunjian Tan Xue Cao Shuai Yuan Weiyu Wang Yongzhong Feng Bo Qiao

Conservation tillage is commonly used in regions affected by water and wind erosion. To understand the effects of conservation tillage on soil nutrients and yield, a long-term experiment was set up in a region affected by water and wind erosion on the Loess Plateau. The treatments used were traditional tillage (CK), no tillage (NT), straw mulching (SM), plastic-film mulching (PM), ridging and p...

2003
L. E. Jackson F. J. Calderon K. L. Steenwerth K. M. Scow D. E. Rolston

The short-term responses of soil microbial processes and community structure to perturbation constitute one aspect of soil quality. Such responses are often associated with an increase in the emissions of greenhouse gases (i.e., CO2, NO, or N2O) and the accumulation and potential loss of nitrate by leaching. Here we describe our recent work on responses of soil carbon and nitrogen dynamics, mic...

2016
K. B. ESSER

Hardpans (plough/hoe pans) are commonly believed to restrict plant root growth and crop yields under conventional small-scale agriculture in sub-Saharan Africa. This study questions the notion of widespread hardpans in Zambia and their remedy under conservation tillage. Soil penetration resistance was measured in 8x12 grids, covering 80 cm wide and 60 cm deep profiles in 32 soil pits. Large and...

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