To gain perspective on alfalfa-annual crop rotations in the upper Midwest, USDA-National Agricultural Statistics Service cropland data layers and Soil Survey Geographic Database layers were combined for six states (North Dakota, South Dakota, Nebraska, Minnesota, Iowa, and Wisconsin) and seven years (2006-2012). Soil texture and geographic location both significantly affected the length of the ...

Question 101: ‘Lord Melchett, in relation to genetic modification, what do you object to and why?’ Lord Melchett, Head of Greenpeace, UK: ‘My Lord Chairman, the fundamental objection is that there are unreliable and unpredictable risks.’ Question 105: ‘How far are you prepared to carry your objections to these developments?’ Lord Melchett: ‘I am happy to answer for Greenpeace [...] Greenpeace o...

Ethanol is mainly produced from sugar cane (Brazil) and corn or other cereals (US), but these sources induced criticisms as for social sustainability, being directly competitive with the food and feed chain. Therefore, a second generation concept was introduced for biofuels, by developing processes for their production from waste biomass or energy crops not competitive with agriculture. However...

Of the most important questions facing society today, those near the top of the list include the status and future of the world's food supply, its environmental quality and its sources of energy. These questions have increasingly been before the general public in recent years and have for an even longer period of time, been of concern to the world's thinkers, planners and policy makers . It had...

Plastic mulch increased minimum temperature of soil, accelerated plant height,early growth, early yield, and bring satisfactory weed control without anyapplication of herbicides. This experiment was laid out on three-factorialRandomized Complete Block Design with three replications during 2008-2010 atthe National Rice Research Institute, Rasht, Iran using three kinds of mulches(Transparent and ...

in this research, the effect of crops such as corn, wheat, sugar beet and clover as previous crop on incidence of leaf and crown wart disease of sugar beet was studied. in the first year, corn, wheat, clover and sugar beet were planted as previous crop in a randomized complete block design with four replications. the amounts of turnover of nitrogen to the soil due to crop residue and their effe...

Abstract: The objective of this work was to evaluate phytomass production, nutrient cycling, and efficiency use by single intercropped crop systems, in the second crop, under no-tillage. experiment carried out during 2014 2015 Cerrado biome state Mato Grosso, Brazil, a randomized complete block design, with nine treatments four replicates. In 2014, systems were evaluated at 63, 93, 124, 157 day...