Features of formation of productivity of sweet sorghum hybrids depending on the influence of agrotechnical factors: width of row spacing, crop density and processing by growth regulator

Сторожик, Л. І.; Музика, О. В.

doi:10.21498/2518-1017.15.2.2019.173567

Plant Varieties Studying and Protection

2019

DOI: 10.21498/2518-1017.15.2.2019.173567

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Features of formation of productivity of sweet sorghum hybrids depending on the influence of agrotechnical factors: width of row spacing, crop density and processing by growth regulator

Л. І. Сторожик¹,

О. В. Музика²

Abstract: ÂñòóïÂèðîùóâàííÿ áóäü-ÿêèõ ñ³ëüñüêîãîñïîäàðñüêèõ êóëüòóð ìàº íà ìåò³ îòðèìàííÿ ¿õ âèñîêî¿ ïðîäóêòèâíîñò³ äëÿ çàáåçïå÷åííÿ ïîïèòó íà ïðîäîâîëüñòâî òà ñèðîâèíó äëÿ ïåðåðîáëÿííÿ. Â³äïîâ³äíî â êîíêðåòíîìó âèïàäêó âèÿâëåííÿ îñîáëèâîñòåé ðîñòó é ðîçâèòêó ñîðãî öóêðîâîãî éîãî ïðîäóêòèâí³ñòü º ³íòåãðîâàíèì ïîêàçíèêîì åôåêòèâíîñò³ äîñë³äaeóâàíèõ åëåìåíò³â òåõíîëîã³¿ âèðîùóâàííÿ òà îñîáëèâîñòåé âïëèâó ´ðóíòîâî-êë³ìà-òè÷íèõ óìîâíà íà äîñë³äaeóâàí³ ã³áðèäè.Íà ôîðìóâàííÿ âðîaeàéíîñò³ ñîðãî öóêðîâîãî ÷èíèòü âïëèâ ñòðóêòóðà … Show more

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Elements of Plant Productivity and Biological Yield Capacity of Grain Sorghum Hybrids Depending on the Inter-row Width and Seed Sowing Rate

Davydenko¹,

ROZHKOV²,

KARPUK³

et al. 2022

Scientific Horizons

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Sorghum is one of the most important food, fodder, and energy crops in the world. The crop is resistant to stress factors, especially moisture deficiency. This biological feature allows it to form high and stable grain yields in conditions of moisture deficiency and hot temperature. Grain sorghum has a significant advantage in terms of several physiological, biological, yield characteristics compared to other crops, but the acreage under it in Ukraine stays limited. The main reason for this is, first, the lack of varietal technologies for its cultivation with improved elements. Therefore, the study of the complex influence of the rate of sowing seeds and the width of the row spacing on the formation of productivity elements is currently a relevant area of research. The main goal of the research was to study the influence of a complex of factors: row spacing, seed sowing rates on the productivity and biological yield of sorghum grain. The research was carried out in 2019-2021 at FE “Diunis”, Kreminskyi district, Luhansk region. The scheme of the experiment: width between rows - 35, 45 and 70 cm, hybrids - Swat and Flagg, sowing rates - 100,000 pieces/ha, 140,000, 180,000 and 220,000 pieces/ha. The Flagg hybrid formed a higher panicle productivity of the main and side stem systems. As to sorghum hybrid Flagg, the grain mass from panicle of the main and lateral stems was 45.1 and 39.0 g, respectively; that of hybrid Svat were 39.5 and 31.1 g. A higher panicle productivity of hybrid Flagg was formed due to a much larger mass of 1,000 grains (by 35–40 %); sorghum hybrid Svat had a larger number of grains in panicle of both stem systems. The biological grain productivity of both stem systems was higher for sorghum hybrid Flagg – 5.87 t/ha, as compared with that of early-ripening hybrid Svat, which was equal to 4.75 t/ha.

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Elements of Plant Productivity and Biological Yield Capacity of Grain Sorghum Hybrids Depending on the Inter-row Width and Seed Sowing Rate

Davydenko¹,

ROZHKOV²,

KARPUK³

et al. 2022

Scientific Horizons

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Photosynthetic productivity of sorghum (Sorghum bicolor L. (Moenh) in the conditions of the Right-Bank Forest-Steppe of Ukraine

Pravdyva¹,

Zatserkovna²,

Vakhniy³

et al. 2023

Scientific Horizons

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Sorghum (Sorghum bicolor L. (Moenh) is a technical, food, and fodder crop and can be used for various purposes, given its value, the acreage should be substantially expanded in Ukraine, and the elements of cultivation technology should be thoroughly examined. The purpose of the study was to determine the effect of the growth regulator on the photosynthetic productivity of sorghum in the conditions of the Right-Bank Forest-Steppe of Ukraine. The following methods were used in the study: field, measuring and weighing, mathematical, and statistical. The study was conducted in conditions of unstable moisture in the Right-Bank Forest-Steppe of Ukraine in 2016-2019. Based on the results of the study, it was determined that the use of a plant growth regulator affected photosynthetic productivity, namely, the leaf surface area, photosynthetic potential and net photosynthesis productivity. The indicators for the content of chlorophylls changed. Thus, the assimilation area of leaves reached a maximum with seed treatment and spraying of crops and amounted to 8.56 thousand m2 /ha during the tillering period, during the period of stem elongation – 29.6 thousand m2 /ha, during flowering and full ripeness – 40.32 and 4.97 thousand m2 /ha. Net photosynthetic productivity in the control was the lowest – 4.67 g/m2 , the use of a growth regulator on seeds and crops contributed to its increase by 0.27 and 0.79 g/m2 . With the treatment of seeds and crops, the net photosynthetic productivity was the highest and amounted to 6.12 g/m2 . The sum of chlorophylls a+b had the highest rates during the tasselling period and, depending on the experiment options, ranged from 4.36 to 5.35. The yield of grain and biomass also varied depending on the use of the preparation, and was the highest in the version with seed treatment and spraying of crops (7.1 and 35.9 t/ha). The close relationship between photosynthetic productivity and the yield of sorghum is also determined. The study can contribute to the widespread use of growth regulators in sorghum crops, ensure the full development of plants, and increase grain yields and biomass

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Features of formation of productivity of sweet sorghum hybrids depending on the influence of agrotechnical factors: width of row spacing, crop density and processing by growth regulator

Cited by 2 publications

References 3 publications

Elements of Plant Productivity and Biological Yield Capacity of Grain Sorghum Hybrids Depending on the Inter-row Width and Seed Sowing Rate

Elements of Plant Productivity and Biological Yield Capacity of Grain Sorghum Hybrids Depending on the Inter-row Width and Seed Sowing Rate

Photosynthetic productivity of sorghum (Sorghum bicolor L. (Moenh) in the conditions of the Right-Bank Forest-Steppe of Ukraine

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