نتایج جستجو برای: lack of optimal growing degree days gdd

تعداد نتایج: 21209518  

Behroz Aminzadeh Gholam Reza Din Panah Saleh Barzegar Sirus Naderi Zarneh

One of the major issues of increasing agricultural production, is adaptation of technology to specific climatic variables in cultivated areas. Knowing the weather and climatic condition and periodic yearly and multi-year changes of meteorological phenomena and deviations from normal values ​​are of major requirements of modern agriculture. In this study, daily, monthly and annual weather data o...

Behroz Aminzadeh Gholam Reza Din Panah Saleh Barzegar Sirus Naderi Zarneh

One of the major issues of increasing agricultural production, is adaptation of technology to specific climatic variables in cultivated areas. Knowing the weather and climatic condition and periodic yearly and multi-year changes of meteorological phenomena and deviations from normal values ​​are of major requirements of modern agriculture. In this study, daily, monthly and annual weather data o...

Journal: :بوم شناسی کشاورزی 0
سمیرا سبزواری محمد کافی محمد بناییان حمید رضا خزاعی

persian shallot is one of the important medicinal and industrial plants in iran which is under very dense utilization. study of morphological characteristics in this plant in agronomical systems is very important for expanding agronomic production of this plant. in order to evaluate some physiological, yield characteristics and thermal requirement of two species of shallot, a field experiment w...

Journal: :Revista de ciencias agricolas 2021

Carnation crop in Colombia is one of the main income generating activities Colombian floriculture. However, growth dynamics and its relationship with thermal time are unknown. For this reason, objective research was to determine development carnation (Dianthus caryophyllus L.) cv. ‘Moon Light’ when grown a greenhouse Bogotá savanna. This developed based on phenological stages accumulation Growi...

Journal: :Geospatial health 2012
Ntombi B Mudenda John B Malone Michael T Kearney Paula D Mischler Prixia del Mar Nieto Jennifer C McCarroll Penelope Vounatsou

The distribution of hookworm in schistosomiasis-endemic areas in Brazil was mapped based on climate suitability. Known biological requirements of hookworm were fitted to data in a monthly long-term normal climate grid (18 x 18 km) using geographical information systems. Hookworm risk models were produced using the growing degree day (GDD) water budget (WB) concept. A moisture-adjusted model (MA...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1394

with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

2016
Tianyi Zhang Tao Li Xiaoguang Yang Elisabeth Simelton

Climate-induced crop yields model projections are constrained by the accuracy of the phenology simulation in crop models. Here, we use phenology observations from 775 trials with 19 rice cultivars in 5 Asian countries to compare the performance of four rice phenology models (growing-degree-day (GDD), exponential, beta and bilinear models) when applied to warmer climates. For a given cultivar, t...

پایان نامه :0 1391

uncertainty in the financial market will be driven by underlying brownian motions, while the assets are assumed to be general stochastic processes adapted to the filtration of the brownian motions. the goal of this study is to calculate the accumulated wealth in order to optimize the expected terminal value using a suitable utility function. this thesis introduced the lim-wong’s benchmark fun...

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