H. A. Allard

EFFECT OF THE RELATIVE LENGTH OF DAY AND NIGHT AND OTHER FACTORS OF THE ENVIRONMENT ON GROWTH AND REPRODUCTION IN PLANTS¹

W. W. Garner, H. A. Allard · Monthly Weather Review · 1920 · 667 citations

Biology, Botany, Natural Sciences +6

The First Morning Song of Some Birds of Washington, D. C.; Its Relation to Light

H. A. Allard · The American Naturalist · 1930 · 55 citations

Music, D. C., First Morning Song

Photoperiodism, the Response of the Plant to Relative Length of Day and Night

W. W. Garner, H. A. Allard · Science · 1922 · 45 citations · Full text

Gigantism in Nicotiana tabacum and Its Alternative Inheritance

H. A. Allard · The American Naturalist · 1919 · 38 citations · Full text

Botany, F1 Plants, Genetics +17

The North American Ragweeds and Their Occurrence in Other Parts of the World

H. A. Allard · Science · 1943 · 38 citations

Their Occurrence, Biodiversity, Botany +5