Irrigation should be recognized as agricultural art of
very wide applicability and value. Its association with the
idea of desert reclamation has blinded the public mind to its
value in reginos where there is no need of reclamation. It is
a means of soil improvement to be employed, like other...
Raw and biologically stabilized Kraft mill effluents were introduced
into laboratory artificial streams at a ratio of 15 ml per liter
of water over a two year period. Effluent from the stabilization pond
of a second mill was introduced at concentrations of from 5 to 40 ml
per liter of...
The effects of synthetic juvenile hormone on the viability of
eggs, metamorphosis of nymphs, and mating behavior of males and
females in diapause was investigated by treating Draeculacephala
crassicornis with ENT 33972a. The viability of eggs was reduced
14% by a small dose (0.001 μg) of synthetic juvenile hormone applied...
As we contemplate the future of forest landscapes under changing climate conditions and land-use demands, there is increasing value in studying historic forest conditions and how these landscapes have changed following past disturbances. Historic landscape paintings are a potential source of data on preindustrial forests with highly detailed, full-color depictions...
