A Greenhouse Line‐Source Sprinkler System for Evaluating Plant Response to a Water Application Gradient
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Johnson, Douglas A.; Rumbaugh, M. D.; Willardson, L. S.; Asay, K. H.; Rinehart, D. N.; Aurasteh, M. R.

doi:10.2135/cropsci1982.0011183x002200020058x

Cited by 15 publications

(11 citation statements)

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“…Greenhouse air temperatures were maintained between 26 to 33O C. After the second leaf appeared on the main stem, pots were thinned to 1 seedling per pot. The pots then were positioned under a greenhouse line-source sprinkler system (Johnson et al 1982), and watering was initiated.…”

Section: Methodsmentioning

confidence: 99%

Effect of Water on Morphological Development in Seedlings of Three Range Grasses: Root Branching Patterns

Johnson¹,

Aguirre²

1991

Journal of Range Management

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Root morphology is important for successful seedling establishment and survival on semiarid rangelands. This study was conducted to determine the response of early seedling root morphological development of 'Hycrest' [Agropyron desertorum (Fisch. ex Link) Schult. X A. cristatunr (L.) Gaert.], 'Whitmar' (Pseudoroegnetiu spicuta (Pursh) Liive], and cheatgrass (Bromus tectorum L.) to water. A greenhouse line-source sprinkler system provided a gradient of water application (77,66,37, and 5 ml/day). Root morphology was examined at 15, 30, and 45 days after seedling emergence. Order of branching of roots associated with the first foliar node was greater in cheatgrass than in Hycrest or Whitmar at all water applications and dates. Length of the primary root, length of the second group of seminal roots, and length of the first group of adventitious roots were similar in cheatgrass and Hycrest. Root branching for the 3 species decreased as less water was applied, except for cheatgrass irrigated with 5 ml/day. The ability of cheatgrass seedlings to grow with little water was related to their greater order of branching of seminal roots, branching density on the main axis, and length of lateral roots and externalexternal links. The greater root branching densities, lateral root lengths, and external-external link lengths enabled Hycrest seedlings to grow better than Whitmar seedlings with little water. These root morphological characteristics may prove useful in improving seedling establishment of perennial range grasses.

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Section: Methodsmentioning

confidence: 99%

Effect of Water on Morphological Development in Seedlings of Three Range Grasses: Root Branching Patterns

Johnson¹,

Aguirre²

1991

Journal of Range Management

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“…A line‐source irrigation system has been employed to evaluate forage yield and seasonal forage distribution of orchardgrass and perennial ryegrass cultivars along with check cultivars of smooth and meadow brome, tall fescue, and RS‐hybrid wheatgrass. Johnson et al (1982) and Rumbaugh et al (1984) concluded that the line‐source design would have merit in a forage breeding program for evaluating genetic responses to water stress. The line‐source sprinkler plot irrigation system produces a nearly linear (Hanks et al, 1980) water application pattern with the amount of irrigation declining as a function of distance from the sprinkler line.…”

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Dry Matter Production of Orchardgrass and Perennial Ryegrass at Five Irrigation Levels

2001

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Within the Great Basin, availability of irrigation water throughout the growing season is the limiting factor in the development of improved pastures. The choice of species and their water requirements are critical factors for providing a stable source of forage throughout the grazing season. A line‐source irrigation system was used from 1995 to 1998 to evaluate dry matter (DM) production and seasonal forage distribution of nine orchardgrass (Dactylis glomerata L.) and perennial ryegrass (Lolium perenne L.) hybrid cultivars along with check cultivars of meadow brome (Bromus riparius Rehm.) and smooth brome (B. inermis Leyss.), tall fescue (Festuca arundinacea Schreb.), and quackgrass [Elytrigia repens (L.) Nevski] × bluebunch wheatgrass [Pseudoroegneria spicata (Pursh) A. Love] hybrids (RS) under five irrigation levels ranging from 41 to 91 cm per year. Mean DM production rankings across water levels combined over years were tall fescue > orchardgrass > meadow brome > RS‐hybrid > smooth brome > perennial ryegrass‐hybrids. The DM production response across water levels was largely linear with a minor but significant quadratic component at lower water rates. Tall fescue was most responsive (i.e., produced more DM production) to increased irrigation rates. At lower water levels, meadow brome outyielded orchardgrass. However, when water was not limited, orchardgrass outyielded meadow brome. The RS hybrid and smooth brome had relatively low DM production at both low and high water levels. All species produced significantly (P < 0.01) more DM than perennial ryegrass at lower water levels. Under limited irrigation, tall fescue and meadow brome will produce more DM.

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“…A line‐source sprinkler system has been used to control the amount of water applied to an experimental area (Hanks et al, 1976). The system was modified for use in the greenhouse (Johnson et al, 1982), and the procedure was used in the greenhouse and field to evaluate the intraspecific responses of alfalfa ( Medicago sativa L.) and the RS wheatgrass hybrid ( Elymus hoffmanni Jensen & Asay) to different levels of water stress (Rumbaugh et al, 1984). The line‐source irrigation system also was employed by Asay and Johnson (1990) in a rain‐out shelter to determine the genetic variability among crested wheatgrass [ Agropyron desertorum (Fisch.…”

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Responses of Tall Fescue Cultivars to an Irrigation Gradient

2001

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Seasonal availability of water is a major consideration in the management and selection of plant materials for irrigated pastures in the Intermountain West, USA. Objectives were to evaluate the forage yield of 10 tall fescue (Festuca arundinacea Schreb.) strains and cultivars across five irrigation levels and to elucidate the effects of the endophytic fungus Neotyphodium coenophialum (Morgan‐Jones & Gems) Glenn, Bacon & Hanlin on productivity and trends. A line‐source irrigation system was used in a 2‐yr study. Significant differences were detected among the tall fescue entries for dry matter yield (DMY), and differences were relatively consistent across water levels (WL) as indicated by the nonsignificant cultivar × WL interaction and significant correlations among WL. Trends in DMY across WL were largely curvilinear; however, linear trends were much more predominant during the late summer and fall. Stability parameters, based on regression of cultivar × WL × year means on their respective WL × year means, differed among cultivars in analyses including all harvests but were relatively uniform (b ≈ 1.0) for most cultivars later in the season. Differences in DMY between ‘Ky 31’ tall fescue infected with the Neotyphodium endophyte and its endophyte‐free counterpart confirms earlier reports of the positive effect of this fungal organism on forage yield in tall fescue, particularly in water‐limited environments. Seasonal distribution of yield was primarily determined by water availability during the late summer and fall. The relative consistency in DMY of the cultivars across WL indicates that annual yield averaged across levels of water stress would be a logical criterion for selection of germplasm for irrigated pastures in the Intermountain Region.

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A Greenhouse Line‐Source Sprinkler System for Evaluating Plant Response to a Water Application Gradient ¹

Cited by 15 publications

References 0 publications

Effect of Water on Morphological Development in Seedlings of Three Range Grasses: Root Branching Patterns

Effect of Water on Morphological Development in Seedlings of Three Range Grasses: Root Branching Patterns

Dry Matter Production of Orchardgrass and Perennial Ryegrass at Five Irrigation Levels

Responses of Tall Fescue Cultivars to an Irrigation Gradient

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A Greenhouse Line‐Source Sprinkler System for Evaluating Plant Response to a Water Application Gradient 1

Cited by 15 publications

References 0 publications

Effect of Water on Morphological Development in Seedlings of Three Range Grasses: Root Branching Patterns

Effect of Water on Morphological Development in Seedlings of Three Range Grasses: Root Branching Patterns

Dry Matter Production of Orchardgrass and Perennial Ryegrass at Five Irrigation Levels

Responses of Tall Fescue Cultivars to an Irrigation Gradient

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Product

Resources

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A Greenhouse Line‐Source Sprinkler System for Evaluating Plant Response to a Water Application Gradient ¹