نتایج جستجو برای: agricultural fields
تعداد نتایج: 342254 فیلتر نتایج به سال:
In order to guarantee high-quality agricultural products and food safety, efforts must be made to manage and maintain healthy agricultural environments under the myriad of risks that they face. Three central system components of sustainable agricultural management schemes are real-time monitoring, decision-making, and remote access. Information and Communications Technology (ICT) systems are a ...
An integrated system was developed to detect sub-fields within agricultural parcels from remote sensing images. The permanent field boundaries are known and stored in a database. The detection of the sub-fields is carried out on field-by-field basis. The fields are selected one-by-one through a database query. The remotely sensed image is filtered using the Canny edge detector. The detected edg...
BACKGROUND: Conversion of BLH wetland forests to agriculture is a primary cause of wetland loss in the southeastern United States (Figure 1). Restoration of BLH in abandoned agricultural fields, however, has had limited success. Low survival rates of planted trees are a consequence of several environmental factors such as water stress and herbivory. However, pilot studies of growth of seedlings...
As part of a larger study of mercury (Hg) biogeochemistry and bioaccumulation in agricultural (rice growing) and non-agricultural wetlands in California's Central Valley, USA, seasonal and spatial controls on methylmercury (MeHg) production were examined in surface sediment. Three types of shallowly-flooded agricultural wetlands (white rice, wild rice, and fallow fields) and two types of manage...
Agricultural systems science generates knowledge that allows researchers to consider complex problems or take informed agricultural decisions. The rich history of this science exemplifies the diversity of systems and scales over which they operate and have been studied. Modeling, an essential tool in agricultural systems science, has been accomplished by scientists from a wide range of discipli...
In India, agricultural soil has been deteriorated by various on-going practices involving application of chemical fertilizers, pesticides and effluents. Presently, Amritsar (Punjab), an agricultural land, is undergoing rigorous cultivation of wheat and rice crops which consequently increased the application of chemical pesticides and fertilizers for high yield. These agricultural practices are ...
Availability of data on agricultural activities and production are essential for an appropriate socioeconomic planning and sustainability. This study was conducted using a questionnaire that was randomly distributed to farmers to identify some features of the agricultural activities in Hail region and to serve as baseline data on agricultural practices. The questionnaire was divided into main t...
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