Selected Chemical Parameters of Cereal Grain Influencing the Development of Rhyzopertha dominica F.

Abstract

The increasing food crisis in times of ecological threats has challenged conventional agriculture to transform into a more efficient and sustainable agri-food system. The global priority of these activities has become, among others, the responsible and effective use of already produced food. This study aimed to assess the impact of the natural resistance of cereal grains to consumption by storage pests. The study presented here analyzed the impact of selected chemical factors from the grain of six species of cereals (wheat, triticale, rye, barley, oat, corn) on the development of one of the most dangerous storage pests—the lesser grain borer Rhyzopertha dominica F. The increased development of this beetle on the tested grain was determined based on the number of progeny, the mass of dust produced, and the loss of grain mass. Moreover, the correlations between the above-mentioned development parameters of the pest and the content in the grain of dry matter, crude ash, total protein, crude fat, starch, and water-soluble carbohydrates (WSCs) were examined. The results showed that the tested pest developed most intensively on barley and triticale grains and was least abundant on oat and corn grains. Chemical analysis of the selected grain showed that the low number of the R. dominica progeny population was correlated with a higher crude fat content and a lower total protein content in the cereal grain, and therefore, these chemical properties could affect the development of the pest. Knowledge of these relationships can be used in cereal breeding programs and when recommending cereals for more extended storage. This directly translates into improved local and global nutritional and food security. Moreover, it may also contribute to the reduction of pesticide use at the storage stage, which is one of the basic requirements for agricultural production in a sustainable agriculture system.