Concepedia

P. J. O’Brien

PJ

Statistics

Publications

10

Citations

293

H-Index

10

Active since

1979

Affiliations

University of Cambridge(Current)

Aberystwyth University

P. J. O’Brien is an author at University of Cambridge specializing in botany, agricultural economics, and crop science.

Top concepts

BotanyCrop ScienceAgricultural EconomicsPublic HealthPlant PhysiologyPopulation DevelopmentSustainable AgricultureNatural SciencesEngineeringEvolutionary Biology

Publications per year

1979–1998

10

Publications

10

Accumulated day-degrees as a measure of physiological age and the relationships with growth and yield in early potato varieties

P. J. O’Brien, E. J. Allen, J. N. Bean et al. · The Journal of Agricultural Science · 1983 · 95 citations

Vegetable Production, Fertility, Botany +15

Effects of length of sprouting period on growth and yield of contrasting early potato varieties

E. J. Allen, J. N. Bean, Reginald Griffith et al. · The Journal of Agricultural Science · 1979 · 30 citations

Biology, Crop Production, Home Guard +14

Predicting the emergence of potato sprouts

D. M. Firman, P. J. O’Brien, E. J. Allen · The Journal of Agricultural Science · 1992 · 29 citations

Crop Production, Botany, Summary Sprout Emergence +14

Appearance and growth of individual leaves in the canopies of several potato cultivars

D. M. Firman, P. J. O’Brien, E. J. Allen · The Journal of Agricultural Science · 1995 · 26 citations

Vegetable Production, Engineering, Botany +14

The effect of some environmental factors on potato tuber numbers

D. C. E. Wurr, C. C. Hole, Jane R. Fellows et al. · Potato Research · 1997 · 25 citations

Potato Tuber Numbers, Crop Production, Botany +7

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