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Amber N. Bates, Gerald M. Henry, and Cynthia B. McKenney

phytotoxicity concerns associated with many postemergence herbicides make preemergence herbicide applications even more important. Few research trials have focused on the phytotoxic effect of preemergence herbicides on evening primrose species. Richardson and

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Sanjeev K. Bangarwa, Jason K. Norsworthy, and Edward E. Gbur

control options in pepper include pre-emergence (PRE) and post-emergence (POST) herbicides. Registered PRE residual herbicides for in-row weed control include bensulide, trifluralin, clomazone, napropamide, and oxyfluorfen ( Smith and Daugovish, 2008

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R. A. Straw and C. A. Mullins

`Merit' and `Silver Queen' sweet corn plants were treated with nicosulfuron and primisulfuron herbicides at rates of 0.035 and 0.039 kg ai ha-1, respectively. These herbicides were applied either over the top postemergence or directed post emergence. Over the top postemergence applications killed all of the `Merit' plants, but did not injure `Silver Queen' plants. All treatments provided greater than 90 % control of johnson grass and fall panicum.

In a separate experiment, `Silver Queen', `Incredible', `How Sweet It Is', `Pinnacle', `Sweetie 76', and `Landmark' showed slight injury, while `Silverado' showed moderate injury 2 weeks after application of a postemergence treatment of either nicosulfuron or primisulfuron. However, the plants soon outgrew this injury and yields were not reduced due to herbicide treatments.

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Steven C. Haring, Junjun Ou, Kassim Al-Khatib, and Bradley D. Hanson

Auxin herbicides are known to create high-risk drift scenarios for grape growers. Simulated 2,4-D drift as low as 1/100× of a field use rate has caused herbicide symptoms on grapes, including season-long symptomology and symptoms in the following

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Joseph Thomas and Matthew Taylor

-specific herbicides. Catanzaro et al. (1993) indicated that fountain grass exhibited severe (>74%) phytotoxicity 69 d after treatment (DAT) with fenoxaprop, fluazifop, quizalofop, or sethoxydim at 1× and 2× the commercial formulation rates. Fluazifop caused the

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Austin Brown, James Brosnan, Nicholas Basinger, Wesley Porter, and Gerald Henry

efficient nor consistent from year to year. Monosodium methanearsonate (MSMA) is a contact herbicide that results in significant canopy loss following sequential applications, but regrowth can occur throughout summer from rhizome carbohydrate reserves and

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S. Christopher Marble, Shawn T. Steed, Debalina Saha, and Yuvraj Khamare

Weed management in container plant production is challenging, primarily due to limited postemergence herbicide options and the consequential need for supplemental hand weeding ( Case et al., 2005 ). Currently, weed control in container nurseries is

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Lu Zhang, Robert Howard Beede, Gary Banuelos, Christopher M. Wallis, and Louise Ferguson

reactions and produce the same effect as an incompatible pollen. We addressed the following questions. First, does dust on the stigmatic surface reduce pollination and fruit set in pistachio? Second, do herbicide residues in the dust harm pollination and

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S. Alan Walters and Bryan G. Young

-scale implementation of NT practices for pumpkin production has been limited primarily due to the lack of available herbicides to control problematic broadleaf weeds ( Galloway and Weston, 1996 ; Rapp et al., 2004 ; Walters and Young, 2010 ; Walters et al., 2008

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Hiroko Sato, Tadashi Takamizo, Tsutomu Shimizu, Kiyoshi Kawai, and Koichiro Kaku

, weed management is very important, and herbicide resistance can be used as an efficient tool to allow easier maintenance. Herbicide resistance in turfgrass facilitates control of weed species and contributes to reducing cost, labor, and the wastage of