Results 51 to 60 of about 388,487 (202)

Populations of Pear Thrips, \u3ci\u3eTaeniothrips Inconsequens\u3c/i\u3e (Thysanoptera: Thripidae) in Sugar Maple Stands in Vermont: 1989-2005 [PDF]

open access: yes, 2018
Development of an effective IPM strategy for pear thrips, Taeniothrips inconsequens (Uzel) (Thysanoptera: Thripidae), a pest of sugar maple, Acer saccharum Marshall, demands an understanding of their population fluctuations over time.
Kim, J. S   +4 more
core   +2 more sources

The Biology of Canadian Weeds. 131. \u3cem\u3ePolygonum aviculare\u3c/em\u3e L. [PDF]

open access: yes, 2005
A review and assessment of biological information as well as personal data are provided for Polygonum aviculare in Canada. The species has been revised taxonomically and the six subspecies that occur in Canada are presented.
Costea, Mihai, Tardif, François J.
core   +1 more source

Ecology of Sydney plant species : part 10, Monocotyledon families Lemnaceae to Zosteraceae [PDF]

open access: yes, 2013
Ecological data in tabular form are provided on 668 plant species of the families Lemnaceae to Zosteraceae, 505 native and 163 exotics, occurring in the Sydney region, defined by the Central Coast and Central Tablelands botanical subdivisions of New ...
Benson, Doug, McDougall, Lyn
core  

Chionanthus retusus: Chinese Fringetree

open access: yesEDIS, 2006
It is hard to think of a more beautiful, small, 20-foot-tall tree than Chinese Fringetree when it is in full bloom. The pure white, fragrant flowers, emerging just as the dogwood flowers fade, hang in four-inch-long, spectacular terminal panicles which ...
Edward Gilman, Dennis Watson
doaj  

Circular, No. 2 [PDF]

open access: yes, 1928
The information in this circular is intended for the use of settlers and homesteaders in Alaska who are interested in the more general growing of hardy flowering bulbs in the Territory. Alaska is very poor in native ornamental plants, and although the
Georgeson, C.C.
core  

Thresholds of memory: Birch and Hawthorn in the poetry of Robert Burns [PDF]

open access: yes, 2016
Robert Burns’s status as a poet sufficiently close to rural poverty to be able to represent himself as its product, and sufficiently distant from it to be able to manipulate that product, is increasingly being realized.
Pittock, Murray
core   +1 more source

Gladiolus and Dahlias [PDF]

open access: yes, 1930
PDF pages ...
Laurie, Alex
core  

Wild Flowers [PDF]

open access: yes, 1931
PDF pages ...
Gordon, Robert B.
core  

Arthropods Utilizing Sticky Inflorescences of \u3ci\u3eCirsium Discolor\u3c/i\u3e and \u3ci\u3ePenstemon Digitalis\u3c/i\u3e [PDF]

open access: yes, 2018
Cirsium discolor (Muhl) Spreng (Asteraceae) and Penstemon digitalis Nutt. (Scrophulariaceae) produce sticky material only in their inflorescences. While there is a wealth of printed information concerning such sticky traps occurring in other parts of ...
Thomas, Patricia A
core   +2 more sources

Phenological Gardens Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to observe the flowering and leaf stages of selected garden plants throughout the year. After a phenological garden is planted, students observe the growth of leaves and blooming of flowers on the plants. These plants were
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

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