نتایج جستجو برای: winter wheat

تعداد نتایج: 100972  

2017
Wei Feng Shuangli Qi Yarong Heng Yi Zhou Yapeng Wu Wandai Liu Li He Xiao Li

Plant disease and pests influence the physiological state and restricts the healthy growth of crops. Physiological measurements are considered the most accurate way of assessing plant health status. In this paper, we researched the use of an in situ hyperspectral remote sensor to detect plant water status in winter wheat infected with powdery mildew. Using a diseased nursery field and artificia...

2000
Harvey S.J. Hill Jaehong Park James W. Mjelde Stephen W. Fuller

Southern Oscillation Index (SOI) based forecasting methods are compared to determine which method is more valuable to Canadian and US wheat producers. Using decision theory approach to valuing information, the more commonly used three-phase method of El Niño, La Niña, and other is compared to a five-phase system. Because of differences in growing season and yearly SOI classification schemes, tw...

                The value of frost tolerance in wheat is increased with decreasing the temperature in late autumn and/or early winter (phase I, acclimation), then shows plateau state for a period with the coldest temperature (II), finally appears to decrease with warming the temperature (III, de-acclimation). This study was aimed to determine the threshold frost hardiness in wheat for avoiding ...

Journal: :Arthropod Management Tests 2000

Journal: :Arthropod Management Tests 1997

2009
U. Wachowska

OF HABILITATION THESIS University of Warmia and Mazury, Olsztyn, Poland CHANGES IN MICROBIAL COMMUNITIES COLONIZING LEAVES OF WINTER WHEAT TREATED WITH FUNGICIDES AND A PLANT DEFENSE ACTIVATOR

2007
K. W. Freeman

Bed planted wheat systems offer a new alternative for the traditional wheat producer to provide opportunities for crop rotation, more efficient use of water, and new techniques of nutrient management. This study was conducted to determine if planting winter wheat (Triticum aestivum L.) in Oklahoma on raised beds can maintain grain yields while providing more options in the cropping system. Expe...

2013
Wei Qin Baoliang Chi Oene Oenema

Increasing crop yield and water use efficiency (WUE) in dryland farming requires a quantitative understanding of relationships between crop yield and the water balance over many years. Here, we report on a long-term dryland monitoring site at the Loess Plateau, Shanxi, China, where winter wheat was grown for 30 consecutive years and soil water content (0-200 cm) was measured every 10 days. The ...

2017
Yonghui Fan Zhongwei Tian Yanyan Yan Chenxi Hu Muhammad Abid Dong Jiang Chuanxi Ma Zhenglai Huang Tingbo Dai

The diurnal and seasonal temperature rising patterns "asymmetric warming," plays an important role in crop distribution and productivity. Asymmetric warming during the early growth periods of winter wheat (Triticum aestivum L.) profoundly affects vegetative growth and post-anthesis grain productivity, but the underlying physiological mechanism is still unclear. We conducted field experiments fr...

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