The relationships between Poaceae pollination levels and cereal yields

We analyze the possible relationships between theannual levels of Gramineae pollination and cerealyields in Badajoz province (Spain). The pollinationparameters studied were the mean annual pollenconcentration and the concentrations of March, April,May, June, July, and August, and the yield parameterwas taken to be each crop's yield (in t/ha) as well asthe mean yield of all the province's cereal crops.The most notable results were: the relationshipbetween the June pollen concentrations and the yieldsof dryland cereals (wheat, barley, oats, rye, andtriticale), the lack of correlation between the pollenparameters and the yields of irrigated crops (maize,rice, and sorghum), and lastly the significantrelationship between the mean cereal yields and boththe mean annual pollination and the May and Juneconcentrations. At least in the case of the drylandcrops, these relationships are explained by thesimilarity in the effect of environmental conditionson both the wild flora and the cereal crops.