Fourwing Saltbush Seed Yield and Quality: Irrigation, Fertilization, and Ecotype Effects

Petersen, Joseph L.; Ueckert, Darrell Ν.

doi:10.2111/1551-5028(2005)58[299:fssyaq]2.0.co;2

Cited by 11 publications

(5 citation statements)

References 19 publications

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“…There are few published studies examining seed production of native plants in response to irrigation in arid regions. In a westcentral Texas, area that receives 530 mm of annual precipitation, Petersen and Ueckert (2005) found that seed production of Atriplex canescens (fourwing saltbush) did not respond to either 400 mm of irrigation in one year or 200 mm of irrigation the next year. In the Owens Valley, CA, with annual precipitation of 113 mm, Sarcobatus vermiculatus (greasewood) seed yields were significantly higher when irrigated (Breen and Richards, 2008).…”

Section: Discussionmentioning

confidence: 97%

Irrigation Requirements for Seed Production of Five Lomatium Species in a Semiarid Environment

Shock

Feibert

Rivera

et al. 2016

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Seeds of native plants are needed for rangeland restoration in the Intermountain West. Many of these plants are rarely cultivated and relatively little is known about the cultural practices required for their seed production. Irrigation trials were conducted for five perennial Lomatium species over multiple years. Lomatium species grown at the Oregon State University Malheur Experiment Station, Ontario, OR received 0, 100, or 200 mm of irrigation per year. Seed yield responses to irrigation were evaluated by linear and quadratic regression. In general, seed yields from the three species grown for 10 years responded linearly or quadratically to irrigation. To improve the accuracy of estimated irrigation water requirements, regressions were also run on seed yield responses to irrigation plus precipitation during the previous spring; spring and winter; and spring, winter, and fall. Over multiple years, Lomatium dissectum (Nutt.) Mathias & Constance and L. triternatum (Pursh) J.M. Coult. & Rose seed yields were best estimated by a quadratic response to irrigation plus spring precipitation with highest yields at 243 and 255 mm, respectively. Lomatium grayi (J.M. Coult. & Rose) J.M. Coult. & Rose seed yields were best estimated by a quadratic response to irrigation plus precipitation during the fall, winter, and spring with highest yields at 358 mm. Two of the Lomatium species were grown for the last 6 years. The seed yields of L. nudicaule (Pursh) J.M. Coult. & Rose did not respond to irrigation. Seed yields of Lomatium suksdorfii (S. Watson) J.M. Coult. & Rose responded linearly to irrigation in 2015.

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Section: Discussionmentioning

confidence: 97%

Irrigation Requirements for Seed Production of Five Lomatium Species in a Semiarid Environment

Shock

Feibert

Rivera

et al. 2016

horts

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“…Nonetheless, advances in our understanding of reproductive allometry suggest that measures of plant size offer a robust estimate of seed production in many species (Niklas 1993;Niklas and Enquist 2003). Seed production is proportional to size of perennial plants (Hendriks and Mulder 2008;Shipley and Dion 1992), even for taxa found in this Mojave Desert system (Cleary et al 2008;Petersen and Ueckert 2005). Thus, plant size can be used to estimate available resources.…”

Section: Methodsmentioning

confidence: 99%

Diversity begets diversity: relative roles of structural and resource heterogeneity in determining rodent community structure

Stevens

Tello

2011

Journal of Mammalogy

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Environmental heterogeneity is an important determinant of the diversity of natural communities. Effects of heterogeneity can emanate from complementary effects of resource heterogeneity (variation in the number of resources) and structural heterogeneity (variation in the physical structure of the environment). We examined relative effects of structural and resource heterogeneity on the diversity of 31 desert rodent communities in the Mojave Desert. Both structural and resource heterogeneity significantly accounted for rodent species diversity. Nonetheless, when unique and shared effects were examined, only resource heterogeneity exhibited a significant unique effect, accounting for more variation than structural heterogeneity in diversity of rodent communities. When compared with results of previous studies the possibility emerges that effects of either structural or resource heterogeneity might be context dependent and determined by the taxon of focus and relative variation of these two forms of heterogeneity. Accordingly, future studies should distinguish between these two important forms of environmental heterogeneity to improve understanding of their relative impacts on diversity.

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“…Irrigation amounts were 0, 100, and 200 mm. For the quadratic equations, the amount of irrigation that resulted in maximum yield was calculated using the formula x = -b/2c, where b is the linear parameter and c is the quadratic parameter, precipitation, Petersen and Ueckert (2005) found that seed production of Atriplex canescens (Pursh) Nutt. (fourwing saltbush) did not respond to either 400 mm of irrigation in 1 year or 200 mm of irrigation the next year.…”

Section: Discussionmentioning

confidence: 99%

Irrigation Requirements for Seed Production of Three Leguminous Wildflowers of the U.S. Intermountain West

Shock¹,

Feibert²,

Rivera³

et al. 2018

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Increasing the supply of native wildflower seed is essential for restoring burned and degraded wildlands in the Intermountain West. Limitations to wildland seed collection necessitate development of effective cultural practices to improve reliability of seed production in agricultural fields. Irrigation trials were conducted over multiple years for three perennial species in the Fabaceae family [Dalea ornata (Douglas ex Hook.) Eaton & J. Wright, Dalea searlsiae (A. Gray) Barneby, and Astragalus filipes Torr. ex A. Gray]. Each of the three species was grown at the Oregon State University Malheur Experiment Station, Ontario, OR and received 0, 100, or 200 mm·year−1 of drip irrigation in four equal biweekly increments during bud formation and flowering. Seed yield responses to irrigation were evaluated by linear and quadratic regression against 1) applied water, 2) applied water plus spring precipitation, 3) applied water plus winter and spring precipitation, and 4) applied water plus fall, winter, and spring precipitation. In general, seed yields responded quadratically to irrigation. Adding fall, winter, and spring precipitation to applied water improved the accuracy of estimated water requirements for maximum seed production of D. ornata and D. searlsiae. For D. ornata, the highest yields averaged 396 kg·ha−1 and ranged from 146 to 545 kg·ha−1. Averaged over 6 years, seed yield of D. ornata was highest with applied water plus fall, winter, and spring precipitation totaling 393 mm. For D. searlsiae, the highest yields averaged 260 kg·ha−1 and ranged from 51 to 424 kg·ha−1. Averaged over 6 years, seed yield of D. searlsiae was highest with applied water plus fall, winter, and spring precipitation totaling 412 mm. Seed yields of A. filipes ranged from 7 to 110 kg·ha−1 depending on year and averaged 40 kg·ha1 over 6 years. Seed yields of A. filipes did not respond to irrigation in any of the 5 years of testing.

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Fourwing Saltbush Seed Yield and Quality: Irrigation, Fertilization, and Ecotype Effects

Cited by 11 publications

References 19 publications

Irrigation Requirements for Seed Production of Five Lomatium Species in a Semiarid Environment

Irrigation Requirements for Seed Production of Five Lomatium Species in a Semiarid Environment

Diversity begets diversity: relative roles of structural and resource heterogeneity in determining rodent community structure

Irrigation Requirements for Seed Production of Three Leguminous Wildflowers of the U.S. Intermountain West

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