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The numbers of viable weed seeds in the top 15 cm of the soil were determined over a 16-year period in 4 crops grown with or without herbicides and ho...

In pot experiments, the growth of barley seedlings was significantly retarded by the presence of live rhizomes of Agropyron repens near their roots. D...

Soil respiration is commonly determined by measuring the rate of increase in the CO2 concentration within a chamber placed on the soil surface, with a...

A study was made of the effect of secondarily treated effluent on the phosphorus budget of a central Florida freshwater marsh. Three 2000 m2 plots rec...

Overnight respiration losses of whole plants were measured in a young maize crop grown in the humid tropic zone of Western Nigeria. In an older crop, ...

A native Montana grassland was exposed to 3-monthly median SO2 concentrations (52, 131 and 228 mu g/m3) and to N, S and N + S fertilization. Leaf area...

Variation in low temp. growth of several types of white clover collected in N. Britain and sites where low temp. adapted white clover plants may be fo...

The partitioning of net radiation into latent and sensible heat varied with time of day and from day to day. This resulted from variations in net radi...

In a cocoa plantation in Costa Rica, T. jaty was a common visitor to the flowers; on 70% of observed visits, the bees collected pollen. However, fruit...

Soil spore counts of vesicular-arbuscular mycorrhizae in six reclaimed stripmine sites in Wyoming were lower than in undisturbed prairie, while counts...