in order to study radiation use efficiency and radiation interception in intercropping of herb sweet basil and common bean, an experiment was conducted at the agricultural research station, ferdowsi university of mashhad, iran for the growing season of 2008. treatments were 1) sole crop of bean , 2) sole crop of sweet basil, 3) strip intercropping of bean and sweet basil (four rows bean and two...

The objective of this study was to evaluate the effect of soil moisture condition and irrigation regime on the bioelectric potential of crops with different growth stages. The bioelectric potential of broccoli (Brassica oleracea var. italica) plants at the initial and mid-growth stages was measured under different soil moisture conditions and irrigation regimes using pot experiments. The result...

This research was conducted to develop relationships among evapotranspiration (ET), percolation (PERC), groundwater discharge to the stream (GWQ), and water table fluctuations through a modeling approach. The Soil and Water Assessment Tool (SWAT) hydrologic and crop models were applied in the Big Sunflower River watershed (BSRW; 7660 km(2) ) within the Yazoo River Basin of the Lower Mississippi...

Normalized difference vegetation index (NDVI) data, acquired at two-meter resolution by an airborne ADAR System 5500, were compared with fraction of photosynthetically active radiation (FPAR) absorbed by commercial vineyards in Napa Valley, California. An empirical line correction was used to transform image digital counts to surface reflectance. “Apparent” NDVI (generated from digital counts) ...

This study applies the environmental Kuznets curve to test the relationship between the regional economic growth and the different types of agricultural nonpoint source pollution loads in the Ningxia Yellow River irrigation area by using the Johnes export coefficient method. Results show that the pollution load generated by crop cultivation and livestock-breeding industries in the Ningxia Yello...

24 The main goal of this research was to evaluate the potential of the dual approach of 25 FAO-56 for estimating actual crop evapotranspiration (AET) and its components (crop 26 transpiration and soil evaporation) of an olive (Olea europaea L.) orchard in the semi arid 27 region of Tensift-basin (central of Morocco). Two years (2003 and 2004) of continuous 28 measurements of AET with the eddy c...

The convergence of heat below subsidence inversions was estimated from radiosonde ascents on fine summer days. Sensible heat input from the ground was estimated from measurements of heat fluxes and net radiation over a wheat field. Absorption and back scattering of solar radiation by aerosol throughout the atmosphere were calculated from measurements of solar radiation at the ground. Radiation ...

The availability of a considerable amount of Synthetic Aperture Radar data, obtained from airborne and spacecraft systems, has stimulated significant research for the purposes of interpreting backscattering data and investigating the potential of radar remote sensing for various applications. Vegetation has been one of the most studied subjects; however, much of the work has been carried out in...

Sugarcane is an important economic resource for many tropical countries and optimizing plantations is a serious concern with economic and environmental benefits. One of the best ways to optimize the use of resources in those plantations is to minimize the occurrence of gaps. Typically, gaps open in the crop canopy because of damaged rhizomes, unsuccessful sprouting or death young stalks. In ord...

Soil management practices that maintain crop residue cover and reduce tillage improve soil structure, increase organic matter content in the soil, positively influence water infiltration, evaporation and soil temperature, and play an important role in fixing CO2 in the soil. Consequently, good residue management practices on agricultural land have many positive impacts on soil quality, crop pro...