نتایج جستجو برای: weed fungi

تعداد نتایج: 55957  

2000
CHRISTOPHER HALL LAURA L. VAN EERD STEPHEN D. MILLER MICHEAL D. K. OWEN TIMOTHY S. PRATHER DALE L. SHANER MEGH SINGH KEVIN C. VAUGHN STEPHEN C. WELLER

A Research Committee was established by the Weed Science Society of America to outline the direction of weed science research during the next decade. Weeds adversely affect humans in both agricultural and nonagricultural environments. It is the opinion of the research committee that weed science will be advantageously positioned for the future if research focuses on research decision processes,...

اقتداری نایینی, عبدالرضا , غدیری, حسین ,

In order to find the critical period of weed control, the best time of weed control beginning (i.e. herbicide application time), and the length of weed control period (i.e. herbicide persistency) in corn, field experiments were conducted in Bajgah and Kooshkak in Fars Province in 1995 using a randomized complete block design with 14 treatments and four replications. Treatments consisted of diff...

2000
L. Tang L. F. Tian B. L. Steward

An experimental machine vision-based patch-sprayer was developed. This sprayer was primarily designed to do real-time weed density estimation and variable herbicide application rate control. However, the sprayer also had the capability to do high-resolution weed mapping if proper mapping techniques being integrated. Two weed mapping methods were developed. One is GPS signal-based off-line weed ...

Journal: :American Journal of Plant Sciences 2023

Since 2015, Côte d’Ivoire has been the world’s largest cashew producer. However, orchards in are infected by fungal diseases that weaken production. And contribution of weeds to spread these is not yet understood. This study was initiated with aim establishing role proliferation pathogenic fungi orchards. It consisted a survey showing disease symptoms from February 2021 July 2022. The itinerant...

موحدی دهنوی‌, محسن, کیانی, ملیحه, یدوی, علیرضا ,

Unsuitable planting and weed competition are the most important factors that greatly reduce the yield of bean. In order to study the effect of planting date on yield and yield components of three white bean cultivars in weed infest and weed free condition a factorial experiment with randomized complete block design and three replications was carried out at Semirom in 2009. The treatments were p...

2012
P. Lalitha

The ethanol extract of leaves and shoot portion of the fresh Eichhornia crassipes were screened for the presence of various phytochemicals by standard procedures. The present study indicates that the fresh plant contain alkaloids, flavonoids, phenols, sterols, terpenoids, anthoquinones and protein. The aqueous, chloroform fractionates and the ethanol and ethyl acetate extracts were screened for...

2006
John Damicone Hassan Melouk

The agents (pathogens) that cause soilborne diseases of peanut are various fungi and nematodes that survive in the soil and infect one or more parts of the plant at or below the soil surface. Soilborne diseases can severely limit peanut yields in Oklahoma, particularly in fields where long rotations with nonhost crops are not practiced. Southern blight and Sclerotinia blight are probably the mo...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Paul C C Feng G James Baley William P Clinton Greg J Bunkers Murtaza F Alibhai Timothy C Paulitz Kimberlee K Kidwell

Glyphosate is a broad-spectrum herbicide used for the control of weeds in glyphosate-resistant crops. Glyphosate inhibits 5-enolpyruvyl shikimate 3-phosphate synthase, a key enzyme in the synthesis of aromatic amino acids in plants, fungi, and bacteria. Studies with glyphosate-resistant wheat have shown that glyphosate provided both preventive and curative activities against Puccinia striiformi...

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