نتایج جستجو برای: crop modelling
تعداد نتایج: 229326 فیلتر نتایج به سال:
The impact of global climate change is a challenge to the sustainability many ecosystems, including soil systems. However, performance properties under future was rarely assessed. Therefore, this study carried out evaluate selected processes using an agri-environmental modeling approach Sri Lanka. Agricultural Production Systems Simulator (APSIM) model used simulate and plant-related recent pas...
Pesticide use is still much too often systematic on many crops. However, there is scientific consensus that many farmers could change their crop protection practices without putting their revenue in jeopardy. There is need for crop protection management systems that yield significantly lower pesticide consumption. For many crops such management systems are not available, although knowledge abou...
This paper provides a comprehensive review of literature related to the assessment of climate change impacts on crop productivity using climate, water and crop yield models. The existing studies present that climate change models with higher spatial resolution can be a way forward for future climate projections. Meanwhile, stochastic projections of more than one climate model are necessary for ...
Anticoagulant rodenticides (AR) are a widespread and effective method of rodent control but there is concern about the impact these may have on non-target organisms, in particular secondary poisoning of rodent predators. Incidence and concentration of AR in free-living predators in Denmark is very high. We postulate that this is caused by widespread exposure due to widespread use of AR in Denma...
The IWRAM Decision Support System was developed to consider economic, environmental, and sociocultural trade-offs involved with resource competition and development in the Mae Chaem catchment in Northern Thailand. IWRAM contains two modelling toolboxes utilising a nodal network structure for catchment analysis: a Biophysical Toolbox, for considering the biophysical (erosion, streamflow, crop) i...
Crop extent and frequency maps are an important input to inform the debate around land value and competitive land uses, in particular between cropping and mining in the case of Queensland, Australia. Such spatial datasets are useful for supporting decisions on natural resource management, planning and policy. For the major broadacre cropping regions of Queensland, Australia, the complete Landsa...
When identifying suitable niches for specific crops, or identifying the probability of a phenomenon occurring at a specified location, the focus is often on quantifying spatial extent. Whilst this is a fundamental aspect of modelling, it is also important to understand why these locations are selected. This is specially so for agricultural products for which quality matters, i.e. most higher va...
Abstract—Present study focused on the utilization of solar energy by the help of photovoltaic greenhouse solar dryer under forced mode. A single slope photovoltaic greenhouse solar dryer has been proposed and thermal modelling has been developed. Various parameters have been calculated by thermal modelling such as greenhouse room temperature, cell temperature, crop temperature and air temperatu...
In this contribution, a prototypical development platform is presented, which supports model development of standard and hybrid low level Petri nets with respect to the requirements of environmental modelling. The basic theory of hybrid Petri nets with important extensions for ecological modelling are summarised, and the development platform is shortly described. Two examples are chosen for det...
This paper deals with the modelling and simulation of greenhouse climate. The obtaining of greenhouse production models (climate, crop development, etc.) is a subject of large interest nowadays, as these models can be used for simulation, control and production optimization purposes. A greenhouse constitutes a complex dynamical system, which is described in this paper using the object-oriented ...
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