eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-06-11 11 Spl.Edn.2 79 83 10.13005/bbra/1443 11925 article Nurbek Lomalievich Adaev 1 Emanuil Danaevich Adinyaev 2 Diana Omarovna Palaeva 1 Aseat Ganievna Amaeva 1 Vahit Vahaevich Eskiev 3 Milana Khalitovna Khamzatova 3 CSc. (Biology), assistant professor, head of the chair “Plants Protection”, Chechen State University. 364051, Chechen Republic, Grozny, 32 Sheripov Street, 8(8712) 33-24-05. Doctor of Agricultural Science, Professor, head of “Farming and land use” Department at Gorsky State Agrarian University.362040, Republic of North Osetia-Alania, Vladikavkaz, 37 Kirov Street, tel. 8(8672) 53-70-18. A Post-Graduate Student of North Caucasian Research Institute of Mountain and Foothill Agriculture. 363110, Republic of North Ossetia-Alania, Vladikavkaz, Prigorodny Region, village Mikhailovskoye, 1 Viryams Street, tel. 8(8672) 73-04-20. The paper considers the research results carried out in the steppe irrigated zone of the Chechen Republic in meadow chernozem-like soils on different sowing terms of different corn hybrids of domestic and foreign selection within various maturity groups. The paper presents information on the impact of the Bioplant Flora antistress agent (organic-mineral nano fertilizers) on growth, development and photosynthetic activity of corn plants of various maturity groups (early-maturing, mid-maturing, and middlelate ones) on the grain yield value of domestic hybrids (VNIIKiS) Mashuk-360, K-180, and foreignhybrids (Pioner company) –PR-38-24 at different sowingterms. This paper determines the grain yield volume increase of cultivated hybrids depending on the Bioplant Floratreatment, sowing terms and genotypic features of hybrids. The paper shows the factors forming a high quality grain yield volume of domestic hybrids about 7.6-11.6 t/ha, foreign hybrids about 9.3-14.4 t/ha with Bioplant Flora antistress agent treatment https://www.biotech-asia.org/vol11_nospl_edn2/the-influence-of-sowing-terms-and-new-generation-antistress-agent-on-the-productivity-of-highly-producing-corn-hybrids-of-domestic-and-foreign-selection/ Corn hybrids; Sowing terms; Yield volume; Bioplant Flora