Integrated Water and Nitrogen Fertilizer Management Using Modeling of System Dynamics Approach in Sugarcane Farmlands with Subsurface Drainage Systems

مدل‌سازی مدیریت کوددهی نیتروژن در مزارع نیشکر تحت پوشش سیستم‌های زهکشی با استفاده از رویکرد پویایی سیستم

In this research, a comprehensive simulation model for water cycle and the nitrogen dynamics modeling including all the important processes involved in nitrogen transformations such as fertilizer dissolution, nitrification, denitrification, ammonium volatilization, mineralization, immobilization as well as all the important nitrogen transportation processes including nitrogen uptake by the plan...

simulation of subsurface drainage systems in unsteady states using system dynamics

the system dynamics technique is an object-oriented approach that studies and manages complex feedback systems. its merits include the friendly and easy development and improvement of a model. it is also used as a decision tool for engineering problems. in this paper, the system dynamics technique was used to simulate the performance of a subsurface drainage system in an unsteady state. the mod...

Health System Financial Supply Chain Management with System Dynamics Approach: An Integrated Review

Introduction: Financing, creating resources, delivering services, and stewardship are the four main tasks of the health system, and achieving these goals is the main indicator of an efficient and fair health system. The present study was conducted to investigate the model of the management of the financing chain of the health system with the approach of system dynamics. Methods: In this integra...

Designing the Model of Strategic Planning Systems in Automobile Industry with Using System Dynamics Approach

Strategic planning increases the probability of reaching goals with the optimal use of organization resources by determine the organization strategic goals, identify and select the suitable strategies to achieve selected goals and develop the organization strategic capability.  In this study not only identify the various models in strategic planning systems, but also presented the features of a...

Corn Yield and Nitrate Loss in Subsurface Drainage from Midseason Nitrogen Fertilizer Application

Whether in response to remotely sensed plant N status or as a rescue treatment when previously applied N has been lost to denitrification or leaching, there is growing interest in applying N to corn at midseason. While the yield benefits of this practice are variable, little information is available as to the impacts of midseason N application on water quality. We compared grain yields and NO3 ...

Hydraulic conductivity measurment for subsurface drainage system