Barany in the Garden: Photoperiodism: How poinsettias tell time. Carol Barany Special to the Yakima Herald-Republic; Dec 12, 2021 Dec 12, 2021 Updated Jan 13, 2022; 0; Facebook; ...

THE announcement of the formative effect of such a dilute factor as relative length of day and night, introduced by Garner and Allard1 as photoperiodism, has become the subject for many studies by ...

Karen B. London, Ph.D. is a Certified Applied Animal Behaviorist, Certified Professional Dog Trainer, and an author of seven books about animals, including Treat Everyone Like a Dog: How a Dog ...

DURING the past five years, work has been in progress at Rothamsted on rearing in the laboratory a number of plant-feeding insects. One of the aims has been to maintain supplies of insects in ...

Frank B. Salisbury, Twilight Effect: Initiating Dark Measurement in Photoperiodism of Xanthium, Plant Physiology, Vol. 67, No. 6 (Jun., 1981), pp. 1230-1238 ...