Agrobiological specifics of switchgrass seed productivity formation

Кулик, М. І.; Rozhko, I.; Syplyva, N.; Bozhok, Y.

doi:10.31521/2313-092x/2019-4(104)-6

Cited by 2 publications

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“…Росте на різних ґрунтах, не вибаглива до вмісту вологи та поживних речовин, позитивно впливає на навколишнє середовище, зокрема сприяє боротьбі з ерозією ґрунтів, збереженню природних умов та поліпшенню якості ґрунтів. Продуктивність надземної вегетативної маси світчграсу за багаторічного циклу використання збільшується поступово з менш ніж 2 т/га першого року використання до 12-18 т/га та більше в наступні роки вирощування [9,10,11,12]. Господарське використання рослин триває до 15 років, і щорічно можна отримувати збір сухої маси до 20-25 т/га, яка містить до 90-120 гВт/год.…”

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Weed infestation of switchgrass (Panicum virgatum L.) crops

Chernelivska,

Zadorozhnyi,

Sychuk

2023

FFP

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Purpose. Determination of the species composition of weeds in switchgrass crops and their influence on the formation of biomass productivity. Methods. Field, laboratory, quantitative-weighing, calculation-comparative, mathematical-statistical. Results. The results of studies on weed infestation of switchgrass crops and methods of their control are highlighted. A mixed type of weediness was observed in the crops, consisting of 19 species from 8 families, with a predominance of annual dicotyledonous species (75.0-87.2%). While in the third (91.7-95.1%) and fifth (61.0-91.7%) years of vegetation, perennial dicot species such as Erigeron canadensis, Lactuc aserriola L., Artemisia annua L., thistles ones, annual dicotyledons were not present. When analyzing the quantitative composition of weeds in the first year of vegetation on the weedy control, high level of weed infestation was observed, which amounted to 176 pcs./m2, in the second and third years 103-105 pcs./m2, in the fourth – 74 pcs./m2 and in the fifth – 39 pcs./m2 . In the variants where weed control was used in the third and subsequent years a decrease in the number of weeds by 83.5-88.4% was noted compared to the control. The use of herbicides on crops ensured efficiency in the first year of vegetation at the level of 72.3-76.9%, while in the fifth year it was 95.3-96.2%. Weed control allowed increasing the biomass yield to 10.7-10.8 t/ha, while the weeded control yielded 8.8 t/ha. Conclusions. The use of herbicides (Dialen super 464 SL, Caliber 50) led to a decrease in the number of weed plants from 28.6% in the first year of vegetation to 88.3% in the fifth year, providing a 72.3-97.6% efficiency depending on the year of vegetation of the crop. Weed controll in the fifth year of crop vegetation made it possible to obtain 11.0 t/ha of dry biomass, 11.9 t/ha of solid fuel, 220 GJ/ha energy from fuel.

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Weed infestation of switchgrass (Panicum virgatum L.) crops

Chernelivska,

Zadorozhnyi,

Sychuk

2023

FFP

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“…

Ðîñëèííèöòâî

Âñòóï²íòðîäóêö³ÿ ïðîñà ïðóòîïîä³áíîãî (ñâ³ò÷ãðàñó), îñîáëèâîñò³ âèðîùóâàííÿ, çáèðàííÿ é çáåð³ãàííÿ á³îìàñè òà íàñ³ííÿ âèñâ³òëåíî ó ÷èñëåííèõ ïóáë³êàö³ÿõ [1][2][3][4]. Ó äåÿêèõ íàóêîâèõ ïðàöÿõ àíàë³çóþòüñÿ âàð³àíòè äîïîñ³â-íî¿ ï³äãîòîâêè íàñ³ííÿ äî ñ³âáè òà çàõîäè âèâåäåííÿ éîãî ç³ ñòàíó ñïîêîþ [5][6][7][8]. Ó çíà÷-í³é ê³ëüêîñò³ ïóáë³êàö³é íàâîäÿòüñÿ ðåçóëüòàòè äîñë³äaeåíü ùîäî îñîáëèâîñòåé ôîðìóâàííÿ âðîaeàéíîñò³ á³îìàñè ö³º¿ êóëüòóðè çàëåaeíî â³ä àãðîòåõí³÷íèõ çàõîä³â [9-12], ñîðòîâèõ îñîáëèâîñòåé [13-15] òà ´ðóíòîâî-êë³ìàòè÷íèõ óìîâ âèðîùóâàííÿ [16][17][18].Ïðîñî ïðóòîïîä³áíå -ðîñëèíà ç ðîäèíè òîíêîíîãîâèõ.

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Introduced and registered switchgrass varieties (Panicum virgatum L.) as a source material for breeding for biomass productivity

Kulyk

Rozhko

2022

PVSandP

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Purpose. On the basis of multi-year research on the complex of economically valuable characteristics, the best switchgrass varieties (Panicum virgatum L.) ‘Patfinder’, ‘Carthage’, ‘Blackwell’, ‘Morozko’, ‘Liadovske’ and ‘Zoriane’ were singled out as a source material for breeding for productivity. Methods. The research was conducted during 2017–2021 on the basis of the Poltava State Agrarian University. The soils of the experimental site of the “Energy Crops” collection are typical chernozems with a humus content of 3.4%. Plots were planted with randomized placement of options in four-fold repetition according to the methods of experimental work in agronomy. Also, approved scientific-practical and methodical recommendations for growing energy crops were applied. To confirm the significant difference between the studied varieties, dispersion analysis using Excel and Statistica programs was used. Results. Switchgrass varieties were grouped according to the duration of the growing season into: early- (up to 160 days), medium- (161–171 days) and late ripening (more than 170 days). The complex resistance of switchgrass varieties to drought, frost and plant lodging: ‘Cave-in-Rock’, ‘Zoriane’, ‘Morozko’ and ‘Liadovske’ was revealed. It was determined that economically valuable characteristics depend to a greater extent on varietal characteristics than on growing conditions. The yield of ground vegetative mass based on dry residue for the studied varieties varied from 12.1 to 15.6 t/ha. Сonclusions. The varieties ‘Cave-in-Rock’, ‘Zoriane’, ‘Morozko’, ‘Liadovske’ were the most adaptable to growing conditions. The switchgrass varieties ‘Kanlow’ and ‘Cave-in-rock’ provided the highest plant stand and switchgrass variety ‘Dacotah’ provided the lowest plant stand. Varieties ‘Pathfinder’, ‘Blackwell’, ‘Shelter’, ‘Carthage’ and ‘Zoriane’ were singled out according to the number of stems and productivity. The latter, together with the Ukrainian variety ‘Zoriane’, are recommended to be used as starting material for crop selection based on biomass productivity.

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Agrobiological specifics of switchgrass seed productivity formation

Cited by 2 publications

References 3 publications

Weed infestation of switchgrass (Panicum virgatum L.) crops

Weed infestation of switchgrass (Panicum virgatum L.) crops

Introduced and registered switchgrass varieties (Panicum virgatum L.) as a source material for breeding for biomass productivity

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