Sentences with phrase «at tillage»

Things get complicated when you start looking at tillage implements, because there is no clear definition and common use for them.

Not exact matches

More than 10 000 years ago, agricultural societies accelerated these early defaunation and land clearing processes, ultimately replacing them with even more novel ecological transformations, including the culture of domesticated species, widespread soil tillage, sustained societal growth, and ever - increasing scales of material exchange, leading to globally significant transformation of the terrestrial biosphere by at least 3000 years before the present time.

Mean oat mineral concentrations between cropping systems and tillage methods at the Farming Systems Trial (Wagner et al., 2016).

Rolf Derpsch and Theodor Friedrich, «Development and Current Status of No - till Adoption in the World,» presentation for International Soil Tillage Research Conference, Izmir, Turkey, 16 June 2009; Conservation Technology Information Center, Purdue University, «National Tillage Trends (1990 — 2004),» from the 2004 National Crop Residue Management Survey Data; FAO, Intensifying Crop Production with Conservation Agriculture, at www.fao.org/ag, viewed 20 May 2003.

USDA, Natural Resources Conservation Service, CORE4 Conservation Practices Training Guide: The Common Sense Approach to Natural Resource Conservation (Washington, DC: August 1999); Rolf Derpsch, «Frontiers in Conservation Tillage and Advances in Conservation Practice,» in D. E. Stott, R. H. Mohtar, and G. C. Steinhardt, eds., Sustaining the Global Farm, selected papers from the 10th International Soil Conservation Organization Meeting, at Purdue University and USDA - ARS National Soil Erosion Research Laboratory, 24 — 29 May 1999 (Washington, DC: 2001), pp. 248 — 54.

About 91 % of farmers are practicing the technology at different levels depending on the component adopted out of the six, namely minimum land tillage; laying out fixed planting basins; no burning of crop residues; planting and input application in basins; and rotation with nitrogen - fixing crops for soil fertility restitution, outlined by the Conservation Farming Unit (CFU).

I wouldn't be surprised to learn that minimum tillage, improved crop varieties, and more judicious use of fertilizers and agri - chemicals had helped farmers increase the margin between inputs and outputs, but I'm not sure there aren't other factors at play, as well.