Life Sciences Commons^™

The Value Of Break Crops In Weed Management, Wayne Parker, Ian Pritchard, Abul Hashem

Bulletins 4000 -

This publication discusses the effect on weed management of the inclusion of break crops (lupin, field pea, chickpea, faba bean, lentil and canola) in the cropping rotation compared to a rotation of continuous cereals.

Including break crops in the cropping rotation allows weed management options unavailable or not suited in wheat. For example, growing field peas allows crop-topping/ desiccation for weed seed set control, crop topping cannot be used in wheat without severe yield loss. Problem weeds can be targeted through break crops, for example, grass weeds are generally more easily controlled in break crops than in cereals. Most weed …

Historical Carbon Emissions And Uptake From The Agricultural Frontier Of The Brazilian Amazon, Gillian L. Galford, Jerry M. Melillo, David W. Kicklighter, John F. Mustard, Timothy W. Cronin, Carlos E.P. Cerri, Carlos C. Cerri

Rubenstein School of Environment and Natural Resources Faculty Publications

Tropical ecosystems play a large and complex role in the global carbon cycle. Clearing of natural ecosystems for agriculture leads to large pulses of CO2 to the atmosphere from terrestrial biomass. Concurrently, the remaining intact ecosystems, especially tropical forests, may be sequestering a large amount of carbon from the atmosphere in response to global environmental changes including climate changes and an increase in atmospheric CO2 Here we use an approach that integrates census-based historical land use reconstructions, remote-sensing-based contemporary land use change analyses, and simulation modeling of terrestrial biogeochemistry to estimate the net carbon balance over the period 1901-2006 for …

Southwest Research-Extension Center, Field Day 2011

Kansas Agricultural Experiment Station Research Reports

Report of agricultural research from Southwest Research-Extension Center of Kansas State University.

Subsurface Compaction A Guide For Wa Farmers And Consultants, Stephen Davies, Alison Lacey

Bulletins 4000 -

For plants to grow in agricultural soils, roots and emerging shoots must be able to force their way through the soil. In soils of high strength, this growth is physically restricted. High strength soils may be due to natural soil characteristics and conditions or develop as a result of agricultural practices and may be in layers or throughout the soil profile.

In agriculture, high strength soils commonly occur as a result of compaction. Compaction of agricultural soils can be in the surface (often caused by stock trampling or rain drop splatter) or in the subsurface (usually in a layer at …