Effect of growth stimulants on yield and quality of grain corn grown in Piedmont subprovince of Dagestan

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Abstract


Field experiments were carried out on chestnut soils of Piedmont Dagestan in 2018-2020. Hybrids of grain corn treated with different growth stimulants were the object of еру research. The experiments showed that the harvesting ripeness of hybrids ROSS 299 MV and Mashuk 355 MV occurred 2...5 days earlier after treatment with growth stimulants compared to the control. The growth stimulants used in the experiment did not have a significant effect on seed germination rate. Among the studied hybrids, the highest seed germination were observed in Mashuk 355 MV hybrid. The highest values of leaf area and net productivity of crops were in hybrid Mashuk 355 MB. Plants treated with growth regulators had higher leaf surface by 4.4% and 5.5%; 6.0 % and 8.4%, respectively. Approximately the same dynamics was recorded for photosynthesis net productivity and accumulation of dry matter. Mashuk 355 MV hybrid showed the best yield, which was 30.5; 31.5 and 32.5% higher respectively, compared to the standard. Productivity of corn hybrids treated with growth regulators increased significantly. The highest data were observed on plants treated with Megamiks N10 growth regulator, which were higher than the control data by 30.0 and 32.5%, respectively. Aminokat 30% growth regulator increased corn productivity by 23.7 and 24.7%, respectively. Sufficiently high indicators of yield structure were 10 recorded in Mashuk 355 MV hybrid in the variant with the Megamiks N10 growth stimulator.


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Table 1. Seedling vigor of corn hybrids depending on growth stimulant treatment (2018—2020)

Growth stimulants

Hybrid

Number of plants,  thousand plants/ha

Seedling vigor, %

Without treatment (control)

ROSS 299 MV  (standard)

66.7

95.3

Mashuk 355 МV

68.3

97.6

Aminokat 30%

ROSS 299 MV  (standard)

66.4

94.8

Mashuk 355 МV

67.5

96.4

Megamiks N10

ROSS 299 MV  (standard)

66.7

95.3

Mashuk 355 МV

67.6

96.6

 

Table 2. Effect of growth stimulants on corn plants before harvest (2018—2020)

Growth stimulants

Hybrid

Number of plants,  thousand plants/ha

Plant survival, %

Without treatment (control)

ROSS 299 MV  (standard)

58.6

83.7

Mashuk 355 МV

59.9

85.6

Aminokat 30%

ROSS 299 MV  (standard)

60.0

85.7

Mashuk 355 МV

61.0

87.1

Megamiks N10

ROSS 299 MV  (standard)

61.1

87.3

Mashuk 355 МV

63.3

90.4

 

Fig. 1. Effect of growth regulators on corn productivity, t/ha

 

Fig. 2. Components of corn harvest depending on growth regulator treatment

 

Fig. 3. Chemical composition of corn grains depending on growth stimulants used

About the authors

Shumaysat Murtazalievna Khashdahilova

Dagestan State Agrarian University

Author for correspondence.
Email: shumakaktus@mail.ru
180, M. Gadzhieva st., Makhachkala, 367032, Russian Federation

PhD student, Department of Land Management and Cadastres

Magomed Rasulovich Musaev

Dagestan State Agrarian University

Email: musaev5858@mail.ru
180, M. Gadzhieva st., Makhachkala, 367032, Russian Federation

Doctor of Biological Sciences, Professor, Head of the Department of Land Management and Cadastres

Magomednur Burganudinovich Khalilov

Dagestan State Agrarian University

Email: khalilov625@mail.ru
180, M. Gadzhieva st., Makhachkala, 367032, Russian Federation

Doctor of Agricultural Sciences, Professor, Department of Technical Systems and Digital Services

Aminat Akhmedovna Magomedova

Dagestan State Agrarian University

Email: daggau_aminat@mail.ru
180, M. Gadzhieva st., Makhachkala, 367032, Russian Federation

Candidate of Agricultural Sciences, Associate Professor, Department of Land Management and Cadastres

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Supplementary files

Supplementary Files Action
1.
Fig. 1. Effect of growth regulators on corn productivity, t/ha

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2.
Fig. 2. Components of corn harvest depending on growth regulator treatment

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3.
Fig. 3. Chemical composition of corn grains depending on growth stimulants used

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