The primary objective of the present study was to test whether agricultural chemical runoff was associated with in-stream genotoxicity in native fish. Using Sacramento sucker (Catostomus occidentalis), we combined field-caging experiments in an agriculturally dominated watershed with controlled laboratory exposures to field-collected water samples, and we coupled genotoxicity biomarker measurem...

Remote sensing bears the potential to provide quantitative information of agricultural crops instantaneously and of a certain regional extent. Estimates of crop growth which are used for crop yield prediction, and timing of forthcoming harvest are important in agricultural planning and policy making. For non-optimal growing conditions, estimates of crop growth may be inaccurate. Crop monitoring...

Riparian buffers can influence water quality in downstream lakes or rivers by buffering non-point source pollution in upstream agricultural fields. With increasing nitrogen (N) pollution in small agricultural watersheds, a major function of riparian buffers is to retain N in the soil. A series of field experiments were conducted to monitor pollutant transport in riparian buffers of small waters...

Nearly all modern off-road agricultural machinery are powered by petroleum, primarily diesel fuel. Equipment manufacturers work to improve fuel efficiency of their equipment to provide better value to their customers. Benefits of reducing petroleum use include lower operating costs, improved operational efficiency, improved energy security, and environmental benefits. Agricultural tractor testi...

Elevated mercury concentrations were measured at the University of Connecticut's mercury forest flux tower during spring agricultural field operations on an adjacent corn field. Concentrations at the tower were elevated, a peak of 7.03 ng m(-3) over the background concentration of 1.74+/-0.26 ng m(-3), during times when the prevailing wind was from the direction of the corn field and during per...

Crop rotation has been practiced for centuries in an effort to improve agricultural yield. However, the directions, magnitudes, and mechanisms of the yield effects of various crop rotations remain poorly understood in many systems. In order to better understand how crop rotation influences cotton yield, we used hierarchical Bayesian models to analyze a large ecoinformatics database consisting o...

With more than 350 million economically active children between the ages of 5 and 17 years old, child labor exploitation is a worldwide problem, and almost half of these children are engaged in hazardous work. In India, especially in West Bengal, children are mainly associated with agricultural work (potato cultivation) in rural areas due to poor socioeconomic conditions. Children have to perfo...

a r t i c l e i n f o A good harvest usually leads to a collapse of agricultural prices since the price elasticity of agricultural products is relatively low. To stabilize the market and protect farmers, many countries have introduced a target zone policy, together with product purchasing or price subsidy strategies. This article analyzes the effect of a target zone with different strategies op...

Kyllmar, K. 2004. Nitrogen Leaching in Small Agricultural Catchments Modelling and monitoring for assessing state, trends and effects of counter-measures. Doctoral thesis. ISSN 1401-6249, ISBN 91-576-6761-6. Nitrogen (N) leaching from arable land to the aquatic environment is considered a serious problem. Small agricultural monitoring catchments in Sweden were used for the application and testi...