Prediction of optimum plant population in winter wheat


Cereals & Oilseeds
Project code:
01 October 1996 - 30 September 1999
AHDB Cereals & Oilseeds.
AHDB sector cost:
£236,231 From HGCA (Project No. 1814)
Project leader:
J H Spink1, J Whaley2, T Semere1, A Wade1, D Sparkes2 and J Foulkes2 1 ADAS Rosemaund, Preston Wynne, Hereford, Herefordshire HR1 3PG 2Division of Agriculture & Horticulture, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD



About this project


Field experiments were set up at ADAS Rosemaund (Herefordshire) and Sutton Bonington (Leicestershire) to examine the effects of reducing seed rate on the yield and yield components of 4 varieties of winter wheat, in harvest years 1996-9. Each variety was sown at six seed rates from 20 to 640 seeds m-2 and at 3 sowing dates at ADAS Rosemaund. Sampling, at harvest and at major growth stages, facilitated comparisons of yield, crop growth and yield components. A second series of experiments at ADAS Rosemaund only, investigated interactions between seed rate and variety (using two seed rates and up to 22 varieties).