Productivity of Maize and Basic Cultivation Techniques Under Conditions of the Krasnoyarsk Forest Steppe

In the field experiment on the area of 100 m2 the impact of weather conditions on green mass formation and chemical composition of early ripe three-line maizehybrid DorkaMGT grown in the central agroclimatic region of the Komi Republic was studied. According tothe data of three vegetation seasons (2018-2020), the maize plants can form up to 56.5 t/ha green mass in the northern non-black earth region withthe sum of average daily active temperatures over 10 °C (GDD10) of about 1500 °C and a hydrothermal coefficient (HTC) of about 2. The decrease in GDD10 of 30 % and moderate precipitation (HTC = 2.3) resulted in a proportional decrease in green mass yield. During the growing season with abundant precipitation (HTC = 4), the production potential efficiency of maize plants fell significantly as evidenced by a decrease in yield by more than 4 times. The average yield of green mass over 3 years was 35.5 t/ha. No significant effects of vegetation conditions on the content of basic chemical elements and nutrients (sugars, protein) in plant biomasshave been revealed. The rate of visible photosynthesis of maize leaves reached 13-14 pmol CO2 / (m2s) during the period of intensive vegetative growth (phase of five leaves) and decreased during the transition to generative development (“heading of panicle” phase). In general, the data obtained indicate the possibility of growing early ripe maize hybrid Dorka MGT in the central agroclimatic region of the Komi Republic to obtain high-quality green feed and silage.

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Crop formation and green mass quality of maize under the conditions of central agroclimatic region of Komi Republic

Tabalenkova

Silina

Дымова

et al. 2021

Аграрная наука Евро-Северо-Востока

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Features of Implementation of Biological Potential of Productivity of Corn Hybrid Grain in Forest-Treatment Western Siberia

Galeev

Albert²,

Самарин

2020

Innov. prodovol. bezop.

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The results of three-year studies (2016–2018) of the global gene pool of maize hybrids on leached chernozem of the forest-steppe of Western Siberia are presented. The features of the realization of the biological potential of grain productivity are studied. It is shown that an increased level of production intensification allows to realize a high biological potential of corn grain productivity of different ecological-geographical profile. Hybrids of the first generation of domestic and foreign gene pool provided high photosynthetic parameters in relation to the conditions of the forest-steppe Priobye. The maximum leaf area of such hybrids as Clifton F1 and Korifey F1 exceeded 40 thousand m 2 / ha. The photosynthetic potential of Clifton F1 hybrid plants reached 3418 thousand m 2 · day / ha. The latter hybrid was distinguished by a high intensity of plant growth and development, which made it possible to form a high biological potential for the productivity of green mass and grain. Under conditions of irrigated agriculture in the forest-steppe of Western Siberia, the maximum yield of corn hybrids was at the level of 8 t / ha. It was established that maize hybrids Talisman (yield 8.4 t / ha), Gitago (8.3 t / ha), Delitop (7 t / ha), Falcon (6.8 t / ha) had a high ecological plasticity under extreme conditions Western Siberia and ensured high productivity with good quality of grain. The highest grain yield of maize Kuban 101 (maximum 6 t / ha) was found at a seeding rate of 6-7 grains per 1 m running length.

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Productivity of Maize and Basic Cultivation Techniques Under Conditions of the Krasnoyarsk Forest Steppe

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Crop formation and green mass quality of maize under the conditions of central agroclimatic region of Komi Republic

Crop formation and green mass quality of maize under the conditions of central agroclimatic region of Komi Republic

Features of Implementation of Biological Potential of Productivity of Corn Hybrid Grain in Forest-Treatment Western Siberia

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