where is the total yield of wheat in year i, and the wheat planting area of year i.
Productivity was greatly increased and the yield of wheat crops regained the original level.
Grain yield of wheat varied greatly between years, mainly due to variation in annual rainfall.
The signature of rising temperatures and heat stress are already showing on yield of wheat and maize, the report says.
BRYAN'S reminder of my work of twelve years ago upon the yield of wheat in the eastern counties of England comes at an opportune moment.
In this study, we also included annual agricultural variables at the landscape scale, including wheat proportion, crop diversity, fertilizer input, and yield of wheat per unit area.
Wang, L., Feng, Z. & Schjoerring, J. K. Effects of elevated atmospheric CO2 on physiology and yield of wheat (Triticum aestivum L .: A meta-analytic test of current hypotheses.
Since 1960 farming systems in Wielkopolska have been strongly intensified: e.g. the yield of wheat (Triticum sp).
Grain yield of wheat was markedly increased under elevated [CO2] with greater grain number and harvest index.
Veresoglou, S. D. & Menexes, G. Impact of inoculation with Azospirillum spp. on growth properties and seed yield of wheat: a meta-analysis of studies in the ISI Web of Science from 1981 to 2008.
Grain yield of wheat was determined in each plot during two growing seasons, and a crop model was used to predict the yield retrospectively.
