Shattercane (Sorghum bicolor (L.) Moench) biology as affected by different agronomic practices

Oyarzabal, E. S.

doi:10.31274/rtd-180813-8078

Cited by 3 publications

(2 citation statements)

References 10 publications

(13 reference statements)

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“…Pareja et al (15) found 85% of all weed seed in the top 5 cm of soil in a reduced-tillage system, but only 28% in the same zone in the conventional system. Emergence depths of several annual weed species were also greater with conventional tillage than no-till (5,14).…”

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Effect of Tillage Systems on the Emergence Depth of Giant (Setaria faberi) and Green Foxtail (Setaria viridis)

Buhler¹

1991

Weed sci.

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The effect of tillage systems on depth of emergence and densities of giant and green foxtail under different environmental and cropping conditions were evaluated from 1985 to 1987 at Arlington, Hancock, and Janesville, WI. Mean emergence depths in no-till were the shallowest, followed by chisel plow and conventional tillage at each location. At least 40% of the giant and green foxtail plants emerged from the upper 1 cm of soil in no-till compared to about 25% in chisel plow and less than 15% in conventional tillage. As many as 25% of the plants emerged from greater than 4 cm in conventional tillage compared to about 10% in chisel plow and less than 5% in no-till. Seedlings emerged from greater depths in a loamy sand than in a silt loam soil regardless of tillage system. At Arlington, green foxtail was the dominant species in conventional tillage, while giant foxtail dominated in chisel plow and no-till. Foxtail densities were greater in chisel plow and no-till than in conventional tillage at all three locations.

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Effect of Tillage Systems on the Emergence Depth of Giant (Setaria faberi) and Green Foxtail (Setaria viridis)

Buhler¹

1991

Weed sci.

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“…Sorghum plants growing in different crops or sorghirai off-tj^es in sorghum crops are considered weeds, and commonly named shattercane (Bumside, 1965). Shattercane plants demonstrate considerable variability in morphology, principally due to hybridization, suggesting a continuum between Sorghum halapense and Sorghum bicolor (Klier, 1988;Oyarzabal, 1989). Shattercane plants usually occur with deciduous, sessile spikelets, are tall, dark-glimied with lax, open inflorescence and with no rhizomes.…”

Section: Shattercane Biologymentioning

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Germination ecology of shattercane (Sorghum bicolor (L.) Moench) and giant foxtail (Setaria faberi Herrm)

Kegode

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Selectivity of nicosulfuron and primisulfuron in three annual grasses

Hinz

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of nicosulfuron and primisulfuron in three annual grasses " (1995). Retrospective Theses and Dissertations. 11058. https://lib.dr.iastate.edu/rtd/11058 INFORMATION TO USERSThis manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be £rom any type of computer printer.The quality of this reproduction is dependent upon the quaii^ of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversefy affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photogrs^hs induded in the original manuscript have been reproduced xerographicaUy in this copy. Higher quality 6" x 9" black and white photogr^hic prints are available for aiqr photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. In Iowa, the important grass weeds in com are the foxtails (Setaria sp.). Shattercane (Sorghum bicolor (L.) Moench) (Oyrazabal, 1989) and woolly cupgrass rEriochola villosa (Thunb.) Kunth) (Bello, 1988) are increasing problems and troublesome because they are highly competitive and produce many seeds (Schuh and Harvey, 1990;Camacho et al. 1990). A Bell & Howell InformationCurrent soil-applied herbicides are not effective against shattercane and woolly cupgrass and most require incorporation. Primisulfuron (2-[[[[[4,6- Field observations demonstrate that primisulfijron and nicosulfuron effectively control shattercane (Owen, 1992, personal communication). However, only nicosulfuron controls woolly cupgrass. This research will elucidate the basis for the differential tolerance to these herbicides by com, woolly cupgrass and shattercane. Dissertation organizationThe research is presented as two research papers: the first paper deals with herbicide penetration, translocation and metabolism in a whole plant system and acetolactate synthase inhibition and the second paper explores in vitro characterization of cytochrome P-450. A general literature review precedes the first paper and a general summary follows the second paper. A literature cited section is included at the end of each paper and a general literature cited section for literature that was cited in the general introduction and literature review follows the general summary. 3CEEAPTERl. LITERATURE REVIEW Sulfonylurea herbicidesSulfonylurea herbicides were first discovered in the ear...

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Shattercane (Sorghum bicolor (L.) Moench) biology as affected by different agronomic practices

Abstract: SoJ:ghum TaxcIDny SoIghum is a genus native to Africa, Asia, Irrlia, and the Australo-Pacific region. Before 1800, slave trade from West Africa introduced soIghum into North .Aroorica, probably through the West Irrlies into the southern states. Martin (1936) described those early sorghum

Cited by 3 publications

References 10 publications

Effect of Tillage Systems on the Emergence Depth of Giant (Setaria faberi) and Green Foxtail (Setaria viridis)

Effect of Tillage Systems on the Emergence Depth of Giant (Setaria faberi) and Green Foxtail (Setaria viridis)

Germination ecology of shattercane (Sorghum bicolor (L.) Moench) and giant foxtail (Setaria faberi Herrm)

Selectivity of nicosulfuron and primisulfuron in three annual grasses

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