Abstract
Sustainable landscaping includes utilization of plants requiring few inputs. We chose four species showing potential for use in arid landscapes: Purshia mexicana, Shepherdia argentea, Shepherdia rotundifolia, and Alnus maritima. We sowed seeds of S. rotundifolia, S. argentea and P. mexicana in three substrates with various water-holding properties due to differing amounts of organic matter (OM). S. rotundifolia germination was maximized in a calcined clay (66.2%) containing no OM and had low germination (12.7 - 21.8%) in the other substrates. S. argentea germination (42.3 to 53.7%) was similar in all substrates. Poor seed quality of P. mexicana resulted in inconclusive results. Our results suggest that germination of some species is enhanced by substrates with excellent drainage properties. We also investigated effects of different rates of controlled-release fertilizer (CRF) on symbiotic nodule formation in seaside alder. We found that lower than prescribed rates of CRF enhanced nodulation without compromising nitrogen status.
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Claims 5
Claim · model-written summary
S. rotundifolia germination was highest in calcined clay with no organic matter at 66.2%, versus 12.7–21.8% in other substrates.
Verbatim
e0“S. rotundifolia germination was maximized in a calcined clay (66.2%) containing no OM and had low germination (12.7 - 21.8%) in the other substrates.”
Claim · model-written summary
S. argentea germination was similar across all substrates, ranging from 42.3 to 53.7%.
- Taxon
- S. argentea
Shepherdia argenteae0 - Treatment
- all substratese0
- Outcome
- germinatione0
- Direction
- similare0
- Value
- 42.3 to 53.7%e0
- Comparator
- all substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. argentea germination (42.3 to 53.7%) was similar in all substrates.”
Claim · model-written summary
Poor seed quality made the P. mexicana germination results inconclusive.
- Taxon
- P. mexicana
Purshia mexicanae0 - Outcome
- inconclusive resultse0
- Qualifier
- Poor seed qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poor seed quality of P. mexicana resulted in inconclusive results.”
Claim · model-written summary
Lower than prescribed controlled-release fertilizer rates enhanced nodulation in seaside alder.
Verbatim
e0“We also investigated effects of different rates of controlled-release fertilizer (CRF) on symbiotic nodule formation in seaside alder. We found that lower than prescribed rates of CRF enhanced nodulation without compromising nitrogen status.”
Claim · model-written summary
Lower than prescribed controlled-release fertilizer rates did not compromise seaside alder nitrogen status.
Verbatim
e0“We also investigated effects of different rates of controlled-release fertilizer (CRF) on symbiotic nodule formation in seaside alder. We found that lower than prescribed rates of CRF enhanced nodulation without compromising nitrogen status.”