نتایج جستجو برای: growth degree days gdd

تعداد نتایج: 1402068  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

Journal: :Indian Journal of Agricultural Sciences 2022

A field experiment was conducted inside a temperature gradient tunnel (TGT) at the ICAR-Indian Agricultural Research Institute, New Delhi during rabi 2014-15 to quantify impacts of elevated on thermal requirement, growth and yield wheat crop. Wheat crop subjected five treatments, i.e. +0ºC (representing ambient condition), +0.9ºC, +2.5ºC, +2.8ºC +3.5ºC.Temperature elevation 3.5°C increased accu...

Journal: :تولید گیاهان زراعی 0

in order to investigate of quality and quantity yield and growing degree day (gdd) of plantago ovata and p. psyllium related to water stress and density, two experiments were conducted at the agriculture research field, tehran university, karaj, in april 2005 and 2006. the experiments were designed in factorial experiments based in randomized completely block (rcb) with three replication in whi...

2006
Martin M. Williams

Martin M. Williams II Corresponding author. U.S. Department of Agriculture—Agricultural Research Service, Invasive Weed Management Research, University of Illinois, 1102 S. Goodwin Ave., Urbana, IL 61801; [email protected] The critical period for weed control (CPWC) identifies the phase of the crop growth cycle when weed interference results in unacceptable yield losses; however, the effect of ...

Journal: :Journal of the Japanese Society of Snow and Ice 1964

Journal: :Journal of the Japanese Society of Snow and Ice 1962

Journal: :Optics express 2010
Li-Jin Chen Guoqing Chang Chih-Hao Li Andrew J Benedick David F Philips Ronald L Walsworth Franz X Kärtner

A broadband dispersion-free optical cavity using a zero group delay dispersion (zero-GDD) mirror set is demonstrated. In general zero-GDD mirror sets consist of two or more mirrors with opposite group delay dispersion (GDD), that when used together, form an optical cavity with vanishing dispersion over an enhanced bandwidth in comparison with traditional low GDD mirrors. More specifically, in t...

2016
Zhenhuan Liu Guojie Zhang Peng Yang

Northeast China (NEC) is one of China’s major rice production areas and has experienced obvious climate warming over the past three decades, similar to other midto high-latitude regions in the Northern Hemisphere. The present study investigates the temporal and spatial impacts of climate warming on rice yield in mid–high latitude regions. In this study, two time series datasets of rice yield an...

Journal: :International journal of horticultural science 2022

Snap bean, a warm-season crop, have low frost tolerance. The optimal temperature for seed emergence and plant growth is important. Therefore, appropriate planting dates adapted varieties has paramount significance in improving pod yield quality of snap bean under short cool season climates. Three cultivars planted at 3 different were examined to evaluate the effects on traits 2-year study clima...

Journal: :Journal of the Japanese Society of Snow and Ice 1961

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