Effects of Row Spacing and Fertilizer Treatment on Seed Yield and Related Traits of ‘Sterling’ Orchardgrass<sup>1</sup>

Carlson, I. T.

doi:10.2134/agronj1964.00021962005600060013x

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Blackwell and Pathfinder cvs., however, lodged by mid-August in both years regardless of row spacing or N treatments (Table 3). Carlson (1964) showed decreases in seed weight ~nd subsequent seed yield of orchardgra~s when lodgi_ng was prevalent. Possibly greater seed yields ~fCav~~-I?…”

Section: Seed Yieldmentioning

confidence: 99%

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices¹

Kassel¹,

Mullen²,

Bailey³

1985

Agronomy Journal

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Switchgrass (Panicum virgatum L.) is a valuable warm‐season native forage grass in Midwest grazing systems prompting interest in seed production to obtain adequate amounts of seed for planting purposes. Switchgrass seed production studies, however, have been primarily conducted in the Great Plains states. This study was conducted to evaluate cultivar response to row spacing and N fertilization for increasing seed yields in a more humid area of the species' natural adaptation. ‘Cave‐in‐Rock’ (C), ‘Blackwell’ (B), and ‘Pathfinder’ (P) switchgrass were established on a Webster loam (fine‐loamy, mixed, mesic Typic Haplaquoll) soil near Ames, IA, in 1978 in 20‐, 60‐, and 100‐cm rows and fertilized with N at 0, 90, and 180 kg ha−1 in 1979 and 1980. Seed yield and selected seed yield components were measured in 1979 and 1980. Seed yields averaged over 2 years, three N levels and three row spacings were 908, 319, and 388 kg ha−1 for C, B, and P, respectively. Greater lodging resistance, and greater seed yields in response to increased N level and decreased row spacing, contributed to the significantly greater seed yields of C. Seed yields of B and P were similar for all N and row‐spacing treatments. Cultivar rankings in percent fertile tillers varied between years. Inflorescences per unit area did not differ among cultivars, but total seed weight infloresence−1 averaged over years was 268 g for C, which was 54 and 40% greater than for B and P, respectively. Total seed weight inflorescence−1 seemed to be the most important seed yield component, followed by 100 seed weight for explaining seed yield differences among cultivars. Cave‐in‐Rock showed superior lodging resistance and a greater potential for increased seed production in narrow rows and at higher N levels in 2‐ and 3‐year‐old stands. Results showed that N management and row spacing of young stands of switchgrass grown for seed production in the humid Midwest varied according to the cultivar used. Cultivar susceptibility to lodging may be the most limiting factor to obtain high seed yields of some cultivars in the more humid areas of natural adaptation of switchgrass.

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Section: Seed Yieldmentioning

confidence: 99%

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices¹

Kassel¹,

Mullen²,

Bailey³

1985

Agronomy Journal

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Orchardgrass

Santen

Sleper

2015

Cool-Season Forage Grasses

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Effects of Row Spacing and Fertilizer Treatment on Seed Yield and Related Traits of ‘Sterling’ Orchardgrass¹

Cited by 2 publications

References 8 publications

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices¹

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices¹

Orchardgrass

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Effects of Row Spacing and Fertilizer Treatment on Seed Yield and Related Traits of ‘Sterling’ Orchardgrass1

Cited by 2 publications

References 8 publications

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices1

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices1

Orchardgrass

Contact Info

Product

Resources

About

Effects of Row Spacing and Fertilizer Treatment on Seed Yield and Related Traits of ‘Sterling’ Orchardgrass¹

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices¹

Seed Yield Response of Three Switchgrass Cultivars for Different Management Practices¹