- Author: Pershang Hosseini
- Author: Alison Colwell
- Author: Bradley Hanson
- Posted by: Gale Perez
The Orobanchaceae family comprises 270 holoparasitic species that cannot photosynthesize. Instead, they rely entirely on the host plant roots for nutrition, and can produce great numbers of minute, dust-like seeds that last for years in the soil. This family contains some of the most serious agricultural parasites in the genera of Phelipanche and Orobanche some of which are present in California. The different species can be distinguished by the degree of branching of their stems and presence/absence of bracteoles at the base of the flower Orobanche species have unbranched stems and no bracteoles, while Phelipanche species feature branched stems with bracteoles. In this paper, we discuss three...
- Author: Pershang Hosseini
- Author: Bradley Hanson
- Author: Mohsen B. Mesgaran
- Posted by: Gale Perez
California is the largest producer of processing tomato in the US (Winans et al. 2020). However, the profitability of the tomato industry in California is seriously threatened due to the presence of the parasitic weed branched and Egyptian broomrape (https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50241). These weeds can severely damage the host reducing the aerial biomass and leaf chlorophyll content (Mauromicale et al. 2008) with yield losses of up to 80% (Eizenberg and Goldwasser 2018).
Broomrape produces hundreds of thousands of tiny seeds (0.2 – 0.4 mm), which can be transported easily by humans, water, wind, and animals (Eizenberg et...
- Author: Matthew Fatino
- Author: Bradley Hanson
- Posted by: Gale Perez
Branched broomrape is a parasitic plant that is an “A-listed” noxious weed in California, requiring crop destruction and a hold order to be placed on reported fields. It has been reported in several commercial tomato fields in Yolo County in recent years and is of growing concern to the California tomato industry. Until recently, there have been no registered chemistries to control branched or Egyptian broomrape in California.
Rimsulfuron, marketed as Matrix SG by Corteva, is registered on tomatoes in California is widely used both PRE...
- Author: Bradley Hanson
One of the largest weed issues affecting the California processing tomato industry is the parasitic plant, branched broomrape (Phelipanche ramosa; Orobanche ramosa)
- https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50241
- https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=47701
- https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=43342
Last week, CDPR issued a positive decision on a 24c "Special Local Needs" label...
- Author: O. Adewale Osipitan
- Author: Bradley Hanson
- Author: Yaakov Goldwasser
- Author: Matthew Fatino
- View More...
From the California Agriculture 75(2):64-73. https://doi.org/10.3733/ca.2021a0012
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Abstract
Branched broomrape (Phelipanche ramosa), a parasitic weed that was the focus of a $1.5 million eradication effort four decades ago in California, has recently re-emerged in tomato fields in several Central Valley counties. Processing tomatoes are important to the California agricultural economy; the state produced over 90% of the 12 million tons of tomatoes grown in...