نتایج جستجو برای: weed interference

تعداد نتایج: 107505  

Journal: :Frontiers in agronomy 2022

Allelopathy and competition are components of plant-plant interactions, delimiting the level interference. Understanding this interaction has practical applications in agriculture. Crop cultivars possessing high allelopathic ability competitive traits themselves tools for sustainable weed management, enabling reduced use herbicides. Greenhouse field experiments were conducted to assess suppress...

Journal: :Horticulturae 2022

Lettuce is one of the most consumed leafy greens. Depending on variety, it ready for harvesting 40–80 days after sowing, and therefore several growth cycles can be concluded within a growing season. Due to its high market standards, lettuce may require intensive management. This study implemented critical period weed interference (CPWI) trial understand at which moment cropping cycle weeds tole...

2014
Stephen L. Young George Meyer Wayne Woldt S. L. Young G. E. Meyer W. E. Woldt

In cropping systems, integrated weed management is based on diversification. Rather than relying solely on one or two herbicides, a multiplicity of weed control strategies is employed. Yet, integrated weed management as currently practiced is far from integrated; every weed is still managed the same regardless of location or season. The recent development of precision application technology is ...

2006

Weed communities in agronomic fields are dominated by annual species. Summer annuals initiate growth each spring from seeds found in the upper soil profile (Figure 1). In most fields, a small percentage of the emerging plants survive and contribute new seeds to the soil seedbank. Historically, most research of the annual weed life cycle has focused on seed dormancy and emergence (A), effect of ...

2006
Irshad Ahmad Muhamin Naeem Muhammad Islam

Information on weed distribution within the field is necessary to implement spatially variable herbicide application. Since hand labor is costly, an automated weed control system could be feasible. This paper deals with the development of an algorithm for real time specific weed recognition system based on Histogram Analysis of an image that is used for the weed classification. This algorithm i...

2014
Leilei Tang Chuanpeng Cheng Kaiyuan Wan Ruhai Li Daozhong Wang Yong Tao Junfeng Pan Juan Xie Fang Chen

Weeding and fertilization are important farming practices. Integrated weed management should protect or improve the biodiversity of farmland weed communities for a better ecological environment with not only increased crop yield, but also reduced use of herbicides. This study hypothesized that appropriate fertilization would benefit both crop growth and the biodiversity of farmland weed communi...

2007
L. BASTIAANS D. L. ZHAO N. G. DEN HOLLANDER D. T. BAUMANN H. M. KRUIDHOF M. J. KROPFF

Weed management systems that rely less on chemical control are needed globally. Next to curative chemical weed control, there are other ways of tackling weed problems, such as (a) reduction of the weed seed bank in the soil, (b) reduced recruitment of weed seeds from the soil seed bank, and (c) strengthening the relative competitive ability of the crop. A number of case studies are presented in...

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