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The contents of organic C and fibrous roots were characteristically high in soils under Rhizophora racemosa (5-10% and 11-26% respectively). They were...

There are clear indications that Birch grows in height only when the mean air and soil temperatures exceed 42-44°F. There is a rather loose correlatio...

Describes how the 29 'land systems' in Bechuanaland [cf. F.A. 25 No. 4494] were recognized; briefly lists their properties; and describes how their ag...

This paper reports and compares the free and sulfate S contents in the soil profiles from barren flats and Mangrove communities previously described [...

Part II: P. ulmi hatched 4-5 weeks before B. angulatus, and in years when the predator severely checked the mite predation was effective at the beginn...

The numbers of Brevicoryne brassicae and its parasites and predators in a crop of brussels sprouts were counted during a season. The results were grou...

Part 1: The influence of routine sprays of winter wash (0.1 % DNOC+3.0% petroleum oil), lime-sulphur and captan on populations of P. ulmi and its pred...

A miniature version (suitable for measuring radiation in herbage and short grass) of an instrument described previously [see H.A., 35: 223]....

Water movement in response to gradients of water potential in the soil-plant-atmosphere catena is considered. An approximate solution is presented of ...

These two parts of a series deal with studies in an apple orchard in south-eastern England in 1953-59 on the effect of routine sprays of winter wash (...