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This report analyzes the costs and benefits of managing nitrogen fertilizer in ways that also reduce greenhouse gas emissions in cereal production (ri...
Read moreA critical assessment was made of the use of hemispherical photography in fully-developed wheat and barley canopies. It is concluded that black-and-wh...
Read morePerennial ryegrass, wheat, red clover and lucerne were grown on soil in pots with and without added K; foliage was leached with simulated rain and the...
Read moreThe shoot-fly larvae overwintering in cut and grazed grass in Northern Ireland were studied over a five-year period. The commonest species found were ...
Read moreAn automatic multichannel selector system and a simple, inexpensive amplifier are described for recording the output from Richards and Ogata droplet t...
Read moreMeasurements of web cover, aphid availability and aphid capture were made in fields of winter wheat in West Sussex and East Anglia, England, in 1981 a...
Read moreAgrostemma githago and spring wheat cv. Sicco were sown in monocultures and 1:1 mixtures at overall densities of 16, 40, 120, 400 and 1200 plants/m2 i...
Read moreBroods of grey and red-legged partridges were radio-tracked for 20 days after hatching and their diet estimated from faeces collected at nocturnal roo...
Read moreThe cereal aphid outbreaks of 1979 (Metopolophium dirhodum) and 1980 (Sitobion avenae) and their lower populations in 1981, in Norfolk, eastern Englan...
Read moreA statistical model is presented which explores the effects of weed patchiness on crop yield. Input data are a non-linear regression of yield versus w...
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