Comparative analysis of prospect corn varieties productivity under high-risk farming Amur river region area

The article presents the results of the results of the study of corn hybrids of various ecological and geographical origin according to economic traits. The research was carried out during 2019-2021 in the nursery of the competitive variety trial of the fodder production department on the experimental plot of vegetable rotation of the Far Eastern Agricultural Research Institute (FEARI) by the method of agro-climatic analogues as applicable to the extreme conditions of the Khabarovsk territory. The targets of research were 28 maize hybrids, 16 of which were selected by FEARI. The goal of research is сomparative assessment of the productivity of promising corn hybrids in conditions of risk farming zone in the Amur river region. The studied hybrids were divided into 2 groups: short-season hybrids (FAO - 150-199), 13 samples. The standard is the local selection Birsu hybrid. 2. middle-early hybrids (FAO - 200-299), 15 samples. The standard is released in the Khabarovsk territory Moldavian 215 SV hybrid. On average during the research period the grain productivity of most of the samples in the group of short-season hybrids didn’t exceed the characteristics of standard hybrid. Only Birsu (2-cob) hybrid stood out (+12.4 dt/ha). In terms of herbage and cob productivity almost all hybrids exceed the standard values (Birsu - 194,8; 106,6 dt/ha) by 9.7-126.2 and 9.0-29.49 dt/ha respectively. In the group of middle-early hybrids the Porumben 295 ASV x fertile restorer hybrid stood out. In terms of grain, herbage and cob productivity it exceeded the standard hybrid Moldavian 215 (59.7, 256.9, 110.4 dt/ha) by 31.7, 113.7 and 59.2 dt/ha respectively. Based on the research findings the selected by FEARI Alitet 2 advantageous hybrid was marked out. In terms of herbage productivity it exceed Birsu hybrid by 54.3% and in terms of cob productivity - by 26,1%. The hybrid is transferred to the state variety testing.

corn hybrids, advantageous hybrids, grain productivity, herbage, COBs, nursery of the competitive variety trial