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Leo Roy Tehon

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Fieldbook of native Illinois shrubs

Leo Roy Tehon · Illinois. Natural History Survey Division.

307 sayfa · 1942

Shrubs / Identification

The drug plants of Illinois

Leo Roy Tehon · Natural History Survey Division

135 sayfa · 1951

Botany / Medical Botany

A monographic rearrangement of Lophodermium

Leo Roy Tehon · University of Illinois

151 sayfa · 1935

Lophodermium

Pleasure with plants

Leo Roy Tehon · Yayınevi bilinmiyor

32 sayfa · 1958

Plants / Collection and preservation

Peach yellows in Illinois

Leo Roy Tehon · State Natural History Survey Division

23 sayfa · 1929

Peach / Diseases and pests

FruitEpidemic diseases of fruit trees in Illinois 1922-1928Leo Roy Tehon

Epidemic diseases of fruit trees in Illinois 1922-1928

Leo Roy Tehon · Yayınevi bilinmiyor

502 sayfa · 1930

Trees / Diseases and pests / Fruit

Poisonous plantsIllinois plants poisonous to livestockLeo Roy Tehon

Illinois plants poisonous to livestock

Leo Roy Tehon · University of Illinois, College of Agriculture, Extension Service in Agriculture and Home Economics

103 sayfa · 1946

Poisonous plants

Plant diseasesA preliminary report on the occurrence and distribution of the common bacterial and fungous diseases of crop plants in IllinoisLeo Roy Tehon

A preliminary report on the occurrence and distribution of the common bacterial and fungous diseases of crop plants in Illinois

Leo Roy Tehon · Yayınevi bilinmiyor

325 sayfa · 1924

Plant diseases

ControlRout the weeds!Leo Roy Tehon

Rout the weeds!

Leo Roy Tehon · Natural History Survey Division

34 sayfa · 1937

Weeds / Control

CiltA new mucor-like fungus from plant rootsLeo Roy Tehon

A new mucor-like fungus from plant roots

Leo Roy Tehon · Yayınevi bilinmiyor

Sayfa sayısı yok · 1943

Kategori yok

CiltEcological aspects of host specialization in fungiLeo Roy Tehon

Ecological aspects of host specialization in fungi

Leo Roy Tehon · Yayınevi bilinmiyor

Sayfa sayısı yok · 1938

Kategori yok

CiltTwo new fungi on legumesLeo Roy Tehon

Two new fungi on legumes

Leo Roy Tehon · Yayınevi bilinmiyor

Sayfa sayısı yok · 1939

Kategori yok

PhenologyMethods and principles for interpreting the phenology of crop pestsLeo Roy Tehon

Methods and principles for interpreting the phenology of crop pests

Leo Roy Tehon · Schnepp & Barnes, printers

346 sayfa · 1928

Agricultural pests / Crops and climate / Phenology

CiltFieldbook of Native Illinois ShrubsIllinois Natural History Survey Divisio, Leo Roy Tehon

Fieldbook of Native Illinois Shrubs

Illinois Natural History Survey Divisio, Leo Roy Tehon · Creative Media Partners, LLC

Sayfa sayısı yok · 2018

Kategori yok

CiltPeach Yellows in Illinois; 21Leo Roy Tehon, G. L. Stout

Peach Yellows in Illinois; 21

Leo Roy Tehon, G. L. Stout · Creative Media Partners, LLC

Sayfa sayısı yok · 2021

Kategori yok

CiltExperimental injection of hard maple saplings artificially infected with Verticillium albo-atrum R.& B.Leo Roy Tehon, Homer L. Jacobs

Experimental injection of hard maple saplings artificially infected with Verticillium albo-atrum R.& B.

Leo Roy Tehon, Homer L. Jacobs · The Davey Tree Expert Company

31 sayfa · 1939

Kategori yok