Sergey I. Kokonov, Gamlet Y. Ostaev, Rubina D. Valiullina, Tatiana N. Ryabova, Inna A. Mukhina, Anna I. Latysheva, Alexander A. Nikitin
This article discusses the problem of adaptation of corn hybrids to the conditions of the Udmurt Republic. Corn is the main raw material of high quality silage. When cultivating field crops, the variability of quantitative traits is undoubtedly caused by the growing conditions and the “genotype × environment” interaction. An integrated approach to the consideration of this issue showed that the growth of potential productivity of agricultural crops due to breeding and cultivation technology does not reflect favorably on the resistance of new varieties and hybrids to the effects of abiotic and biotic stresses. Studies were performed on sod-medium podzolic medium loamy soil. The topsoil was characterized by an average and high content of humus (2.6–3.2%), a very high content of mobile phosphorus (335–365 mg / kg) and mobile potassium (268–319 mg / kg) and from medium acid to close to neutral by the reaction of рНКСl (5.1-6.4). Long-term studies have revealed that the dry matter yield of 17.6-19.7 t / ha, and the share of cobs in a crop with a waxy ripeness of 40.9-41.9%, can be recommended for cultivation in the production of a hybrid of domestic selection Cascade 166 ASV and hybrids breeding KWS Coryphaeus and Clifton. These hybrids had the lowest cost 438-441 rubles / ton of feed mass. Key words: corn hybrids, environmental plasticity, productivity, cost.