نتایج جستجو برای: Lodging sensitivity

تعداد نتایج: 336342  

2017
Amit Sharma Arun Upneja

The purpose of this paper is to investigate the causes and consequence of cash flow sensitivity. While cash flow has been regarded as an agency problem, empirical investigations in context of managerial conservatism or optimizing behavior are limited. In this paper we investigate two key aspects of cash flow sensitivity: whether cash flow sensitivity causes variations in fixed asset investments...

2016
Liyuan Niu Suwei Feng Weihua Ding Gan Li

Strong wind and heavy rain remain the two most important causes of large acreage wheat (Triticum aestivum L.) lodging in China. For research the influence of wind speed and rainfall-separately as well as together-on the extent and degree of lodging, five levels of the severity of lodging were defined based on a combination of the lodging area and the degree of tilting. Detailed meteorological i...

Journal: :Plant physiology 1990
M Tateno K Bae

This study examined the lodging resistance of mulberry tree (Morus bombycis Koidz. cv Kenmochi) shoots treated or not treated with succinic acid 2,2-dimethylhydrazide (SADH). The lodging safety factor, an indicator of lodging resistance, was defined as the ratio of critical lodging load to the leaf fresh weight observed, provided that the distribution of the critical lodging load along the stem...

2014
Ko Hirano Ayako Okuno Tokunori Hobo Reynante Ordonio Yusuke Shinozaki Kenji Asano Hidemi Kitano Makoto Matsuoka

Although the introduction of semi-dwarf trait into rice has led to improved lodging resistance making it capable of supporting high grain yield, lodging still remains a concern when attempting to further increase the grain yield of rice. However, improving the lodging resistance in rice by depending on the semi-dwarf trait alone is possible only up to a certain limit, beyond which other traits ...

Journal: :Remote Sensing 2017
Tianxing Chu Michael J. Starek Michael J. Brewer Seth C. Murray Luke S. Pruter

Lodging has been recognized as one of the major destructive factors for crop quality and yield, resulting in an increasing need to develop cost-efficient and accurate methods for detecting crop lodging in a routine manner. Using structure-from-motion (SfM) and novel geospatial computing algorithms, this study investigated the potential of high resolution imaging with unmanned aircraft system (U...

Journal: :Mathematical and Computer Modelling 2011
Chunqiao Mi Xiaodong Zhang Shaoming Li Jianyu Yang Dehai Zhu Yang Yang

Lodging in maize, which is the result of the genotype-by-environment interactions, causes severe yield losses annually. There are many studies on lodging resistance of maize varieties now, but information about maize planting environment lodging stress is very rare. The environment lodging stress, which is a result of various factors, is characterized by uncertainty. Fuzzy sets theory and fuzzy...

2016
Wei Wu Bao–Luo Ma

Lodging, defined as the permanent displacement of aboveground parts, is a common problem to cause yield loss, deterioration in seed quality and difficult to harvest in canola (Brassica napus L.) crop production. This study aimed to develop a method for assessing crop lodging, to examine how agronomic practices affected the relationships between root lodging and electrical capacitance traits. Ca...

2014
Ayako Okuno Ko Hirano Kenji Asano Wakana Takase Reiko Masuda Yoichi Morinaka Miyako Ueguchi-Tanaka Hidemi Kitano Makoto Matsuoka

Traditional breeding for high-yielding rice has been dependent on the widespread use of fertilizers and the cultivation of gibberellin (GA)-deficient semi-dwarf varieties. The use of semi-dwarf plants facilitates high grain yield since these varieties possess high levels of lodging resistance, and thus could support the high grain weight. Although this approach has been successful in increasing...

2017
Fei Weng Wujun Zhang Xiaoran Wu Xia Xu Yanfeng Ding Ganghua Li Zhenghui Liu Shaohua Wang

The objectives of this study were to explore the mechanism by which the lodging resistance of the rice population during the late growth period responds to low-temperature, overcast and rainy weather during the reproductive growth stage. Field experiments were conducted using indica rice Yliangyou2 (lodging-resistance variety), IIyou084 (lodging-susceptible variety) and japonica rice Wuyunjing2...

Journal: :به زراعی کشاورزی 0
فرناز فرجی دانشجوی دکتری زراعت، گروه زراعت و اصلاح نباتات، دانشکده علوم کشاورزی دانشگاه گیلان، رشت - ایران مسعود اصفهانی استاد گروه زراعت و اصلاح نباتات، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت - ایران محمدرضا علیزاده دانشیار بخش فنی و مهندسی، موسسه تحقیقات برنج کشور، رشت - ایران علی اعلمی استادیار گروه زراعت و اصلاح نباتات، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت - ایران

in order to evaluate the morphological characteristics and lodging related traits and carbohydrate content of culm and carbohydrate remobilization in traditional and improved rice cultivars, a field experiment was laid out in randomized complete block design with three replications at rice research institute of iran )rasht( in 2012 and 2013. rice genotypes included three native rice cultivars (...

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