Tiller recruitment patterns and biennial tiller production in prairie sandreed

Hendrickson, J. R.; Moser, L. E.; Reece, P. E.

doi:10.2458/azu_jrm_v53i5_hendrickson

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…However, increases were relatively constant, ranging from 20% to 24% of paired controls, indicating measurable competitive effects did not occur until after 10 July. The apparent lack of effect of a dry spring on tiller emergence is consistent with a concurrent study at GSL in which rate of prairie sandreed tiller emergence and tiller number were poorly correlated with short-and long-term precipitation totals (Hendrickson et al 2000). Table 3.…”

Section: Effects Of Western Ragweed Removal On Associated Speciessupporting

confidence: 85%

“…Tiller emergence of rhizomatous C 4 grasses occurs primarily from April to mid-June. From 65% to 85% of prairie sandreed tillers emerge by the end of May (Cullan 1998;Hendrickson et al 2000;Reece et al 2002). If interspecific interference reduced tiller emergence and corresponding endof-season standing crop, yield responses of rhizomatous grasses, expressed as a percentage of paired controls (Table 3), should have declined as initial date of western ragweed removal was delayed.…”

Section: Effects Of Western Ragweed Removal On Associated Speciesmentioning

confidence: 99%

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Interactions Among Western Ragweed and Other Sandhills Species After Drought

Reece¹,

Brummer

Northup

et al. 2004

Rangeland Ecology & Management

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Interannual differences in yield and species composition of herbaceous vegetation on semiarid rangelands are common and often related to variations in precipitation regime. Interspecific interactions that occur after drought-induced population fluxes of western ragweed (Ambrosia psilostachya D.C.) were evaluated by removing western ragweed or associated species from 1-m 2 quadrats at weekly intervals beginning in early May, June, or July 1991 or 1992 on high-seral sandhills prairie in Nebraska. The composite of peak standing crops for ragweed and each group of associated species was 77% greater during May-October 1991 (2 252 kg•ha À1) compared with 1992 (1 275 kg•ha À1) when April and May precipitation was 98 mm below average and a late frost occurred. Mean levels of western ragweed herbage up to 436 kg•ha À1 had no effect on associated species in 1991 when above average precipitation occurred throughout the growing season. In contrast, when an unusually dry spring occurred in 1992, relatively small mean levels of ragweed (189 kg•ha À1) reduced end-of-season standing herbage of rhizomatous C 4 grasses on control plots by about 21% (137 kg•ha À1) with little effect on other associated species, regardless of when treatments were initiated. Within a given year, western ragweed density was seasonally constant, similar among treatments, and independent of preceding-year species composition. Severe defoliation of western ragweed had little effect on subsequent-year populations, indicating an ability to maintain primordia for several years with limited plant growth. Because western ragweed is not a strong competitor in the presence of vigorous graminoids, deferring use of June-or July-grazed pasture until after July in the subsequent year can minimize increases in western ragweed. Resumen Diferencias en el rendimiento interanual y la composició n de las especies de vegetació n herbá ceo en praderas semi-aridas son comú n y frequentemente relacionados con la variedad del regimen de precipiació n. Interrrelació n interespecífica que ocurre despues del cambio continuamente provocado por la seguía en la ambrosía del oeste (Ambrosia psilostachya D.C.) fueron evaluadas con quitar la ambrosía del oeste y especies asociadas de 1-m ˙ en intervalos cada semana empezando en mayo, junio, o julio de 1991 o 1992 en praderas de alto crecimiento en Nebraska. El compuesto de cosechas de ambrosía en su punto má ximo y cada grupo de especies asociadas fue 77% mayor durante mayo-octubre de 1991 (2,252 kg ha À1) comparado con 1992 (1,275 kg ha À1) cuando la precipitació n en abril y mayo fue 98 mm menos del promedio y occurio una helada tardia. El promedio de ambrosía del oeste hasta 436 kg ha À1 no tuvo ningun efecto en especies asociadas en 1991 cuando ocurrio precipitació n má s alla del promedio durante el periodo de crecimiento. En contraposició n, cuando ocurrio una sequía durante la primavera en 1992, relativamente pequeñ os niveles de ambrosía (189 kg ha À1) redujeron la cosecha al fin de la temporada de zacate rizomato C4 en terre...

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Section: Effects Of Western Ragweed Removal On Associated Speciessupporting

confidence: 85%

Section: Effects Of Western Ragweed Removal On Associated Speciesmentioning

confidence: 99%

Interactions Among Western Ragweed and Other Sandhills Species After Drought

Reece¹,

Brummer

Northup

et al. 2004

Rangeland Ecology & Management

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“…About 80% of its precipitation occurs during the April through September growing season (Hendrickson et al. ).…”

Section: Methodsmentioning

confidence: 99%

Assessing precipitation, evapotranspiration, andNDVIas controls of U.S. Great Plains plant production

et al. 2019

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Productivity throughout the North American Great Plains grasslands is generally considered to be water limited, with the strength of this limitation increasing as precipitation decreases. We hypothesize that cumulative actual evapotranspiration water loss (AET) from April to July is the precipitation‐related variable most correlated to aboveground net primary production (ANPP) in the U.S. Great Plains (GP). We tested this by evaluating the relationship of ANPP to AET, precipitation, and plant transpiration (Tr). We used multi‐year ANPP data from five sites ranging from semiarid grasslands in Colorado and Wyoming to mesic grasslands in Nebraska and Kansas, mean annual NRCS ANPP, and satellite‐derived normalized difference vegetation index (NDVI) data. Results from the five sites showed that cumulative April‐to‐July AET, precipitation, and Tr were well correlated (R2: 0.54–0.70) to annual changes in ANPP for all but the wettest site. AET and Tr were better correlated to annual changes in ANPP compared to precipitation for the drier sites, and precipitation in August and September had little impact on productivity in drier sites. April‐to‐July cumulative precipitation was best correlated (R2 = 0.63) with interannual variability in ANPP in the most mesic site, while AET and Tr were poorly correlated with ANPP at this site. Cumulative growing season (May‐to‐September) NDVI (iNDVI) was strongly correlated with annual ANPP at the five sites (R2 = 0.90). Using iNDVI as a surrogate for ANPP, we found that county‐level cumulative April–July AET was more strongly correlated to ANPP than precipitation for more than 80% of the GP counties, with precipitation tending to perform better in the eastern more mesic portion of the GP. Including the ratio of AET to potential evapotranspiration (PET) improved the correlation of AET to both iNDVI and mean county‐level NRCS ANPP. Accounting for how different precipitation‐related variables control ANPP (AET in drier portion, precipitation in wetter portion) provides opportunity to develop spatially explicit forecasting of ANPP across the GP for enhancing decision‐making by land managers and use of grassland ANPP for biofuels.

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“…Since 2006 was drier than average (Figure 1), this may have reduced Kentucky bluegrass abundance and benefited native grasses, as increased precipitation appears to be a driver of Kentucky bluegrass increase (Printz and Hendrickson 2015). In perennial grasses, changes in tiller responses in the current year may be the result of impacts or actions of the previous year (Hendrickson et al 2000). On the other hand, Kentucky bluegrass starts growth early in the spring, prior to native species (DeKeyser et al 2013), and does well in moist conditions (DeKeyser et al 2015).…”

Section: Effect Of Time Of Burning On Kentucky Bluegrass Andmentioning

confidence: 99%

Controlling Kentucky Bluegrass with Herbicide and Burning Is Influenced by Invasion Level

Ereth¹,

Hendrickson

Kirby

et al. 2017

Invasive plant sci. manag.

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Kentucky bluegrass (Poa pratensis L.) invades northern Great Plains rangelands. On the Sheyenne National Grassland in southeastern North Dakota, three research sites, each with a different level of Kentucky bluegrass invasion, were chosen to evaluate effectiveness of burning and burning–herbicide combinations to control Kentucky bluegrass. Initial Kentucky bluegrass invasion levels were 37%, 77%, and 91% for LOW, MODERATE, and HIGH invaded sites, respectively. Within each invaded site, four replicated strips (20 by 60 m) were established, with half of each strip burned in late October 2005 and the other half burned in early May 2006. Herbicide treatments of (1) no herbicide, (2) 2.24 kg ha−1 of glyphosate, and (3) 0.43 kg ha−1 of imazapic were randomly assigned to 10 by 20 m subplots within each burn. Control plots were established at the same time. Relative basal cover of native grass, native forb, and Kentucky bluegrass was estimated annually using 50 10-point frames within each subplot. On the HIGH site in 2006, fall-burned plots with a spring glyphosate application had three times the native grass cover and only one fourth of the Kentucky bluegrass cover compared with controls. Similar results with the same treatment occurred at the MODERATE site. Native grasses became the most abundant plant community on these plots in the MODERATE and HIGH sites within 1 yr. Treatment differences were transitory, and the LOW site differed from the MODERATE and HIGH sites. In 2007, on fall-burned plots with spring glyphosate application, the amount of Kentucky bluegrass was 14% and 30%, and native grass species were 52% and 42% on the MODERATE and HIGH sites, respectively, which was similar to the initial values on the LOW site. These data emphasize the importance of initial invasion level in developing restoration strategies and provide evidence burning and herbicide combinations can be valuable management tools even on heavily invaded grasslands.

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Tiller recruitment patterns and biennial tiller production in prairie sandreed

Cited by 3 publications

References 9 publications

Interactions Among Western Ragweed and Other Sandhills Species After Drought

Interactions Among Western Ragweed and Other Sandhills Species After Drought

Assessing precipitation, evapotranspiration, andNDVIas controls of U.S. Great Plains plant production

Controlling Kentucky Bluegrass with Herbicide and Burning Is Influenced by Invasion Level

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