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Urban areas benefit from the ecosystem services provided by low input green roofs. However, limited substrate depth on these green roofs creates chall...

The influence of competition on ramet populations of C. esculentus was studied experimentally at a site near Harare, Zimbabwe. A range of ramet densit...

Tissue m.c. and rates of CO2 and O2 exchange were determined in the laboratory for branches of L. tulipifera collected at 2 week intervals over a 1 yr...

Seed collected from natural stands of P. menziesii growing at (a) 250, (b) 520 and (c) 880 m alt. in Oregon, and from a cross between trees in (a) and...

Glossina control operations are more likely to succeed if timed to exploit periods of natural vulnerability. One measure of a population's condition i...

The authors present a model simulating the effects of the acridid Melanoplus sanguinipes on the yield of spring wheat planted in infested stubble. The...

In order to measure total annual seed rain for a native grassland in Missouri, USA, fifty 9-cm diam. sticky traps were exposed to collect dispersing p...

To determine the effect of M. sojae, a pith-boring agromyzid fly, on soyabean under field conditions in East Java Province, Indonesia, physiologically...

Effects of controlling the shrub Disperma sp. (near D. eremophilum Milne-Redhead) by hand clearing and 3 mechanical methods on ground-cover compositio...

Studies on bird damage to irrigated rice were carried out in 1975-7 on 2 irrigated farms at Bongor, Chad and Yagoua, Cameroun. The level of damage in ...