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1. Ultraviolet Radiation Reflectance, Transmittance, and Absorptance by Plant Leaf Epidermises

Author:
Escobar, D. E.,   et al.   ; Gausman, H. W.; Rodriguez, R. R.;     Show all 3 Authors
Source:
Agronomy journal 1975 v.67 no.5 pp. 720-724
ISSN:
0002-1962
Subject:
Agave americana; Allium cepa; Kalanchoe laciniata; Opuntia engelmannii var. lindheimeri; Peperomia obtusifolia; Yucca; leaves; onions; ozone; reflectance; stratosphere; tissues; transmittance; ultraviolet radiation; wavelengths
Abstract:
... Partial destruction of ozone in the earth's upper atmosphere (stratosphere) will increase levels of ultraviolet (UV) radiation that reach the earth's surface; consequently, plants could be exposed to harmful amounts of UV-B radiation (280 to 320 nm). The objective of our research was to characterize the reflectance, transmittance, and absorptance of UV-B radiation by leaf epidermises. Accordingly, ...
DOI:
10.2134/agronj1975.00021962006700050036x

2. Age Effects of Cotton Leaves on Light Reflectance, Transmittance, and Absorptance and on Water Content and Thickness

Author:
Escobar, D. E.,   et al.   ; Gausman, H. W.; Allen, W. A.; Rodriquez, R. R.; Cardenas, R.;     Show all 5 Authors
Source:
Agronomy journal 1971 v.63 no.3 pp. 465-469
ISSN:
0002-1962
Subject:
botany; Plant Science and Plant Products
Abstract:
... Cotton plants (Gossypium hirsutum L.) were grown in the growth chamber, greenhouse, and field to study effects of leaf matttration on spectral properties, water content, and thickness of single leaves. In the 500- to 750-nm region and at 1,650 and 2,200 nm, leaf age had a variable effect on reflectance. Over the 750- to 1,350-nm wavelength interval (WLI), leaf reflectance was a maximum at node 8, ...
DOI:
10.2134/agronj1971.00021962006300030035x