Invasive White Sweetclover (Melilotus officinalis) Control with Herbicides, Cutting, and Flaming

2009 ◽  
Vol 2 (3) ◽  
pp. 270-277 ◽  
Author(s):  
Jeffery S. Conn ◽  
Steven S. Seefeldt
Keyword(s):  
Seed Production ◽  
Plant Density ◽  
First Year ◽  
Control Methods ◽  
Viable Seed ◽  
Melilotus Officinalis ◽  
River Floodplains ◽  
Glacial River ◽  
Second Year ◽  
And Control

AbstractWhite sweetclover is invading the Alaska glacial river floodplains and roadsides adjacent to natural areas, and control methods are needed. Chlorsulfuron, 2,4-DB, clopyralid, triclopyr, and 2,4-D controlled white sweetclover seedlings below recommended rates in the greenhouse. Biomass of established plants in the field was reduced by chlorsulfuron at recommended (17.6 g ai/ha), 1/2, and 1/4 rates and was reduced by triclopyr and 2,4-D at recommended rates (1,260 and 1,600 g ai/ha). Herbicides were more effective at reducing white sweetclover viable seed production in 2007 than in 2006. Only chlorsulfuron at 17.6 g ai/ha (recommended rate) eliminated seed production in both years. Flaming killed first-year plants, but some second-year plants resprouted and produced viable seed. Cutting at the 2.5 or 10 cm height did not control first-year plants because of regrowth, and second-year plant density and seed production was reduced by cutting at 2.5 cm but not by cutting at 10 cm.

An inevitable crisis? From first to second year in counsellor training

2020 ◽  
Vol 5 (1) ◽  
pp. 74-89
Author(s):  
Hugh Crago
Keyword(s):  
Right Hemisphere ◽  
Training Programme ◽  
First Year ◽  
Training Experience ◽  
Counsellor Training ◽  
Student Dropout ◽  
Second Year ◽  
Neurological Research ◽  
First Year Of Life ◽  
And Control

In a seminal 1973 paper, Robert Clark described the very different “cultures” of the first and second year students in a four year clinical psychology PhD programme. The author applies Clark’s template to his own experiences as trainee or trainer in five different counsellor education programmes, one in the US and four in Australia. Each of the programmes, to varying degrees, demonstrates key features of the pattern identified by Clark, where the first year is “therapeutic” and other-oriented, the second is “professional” and self-focused. The author concludes that all the surveyed programmes exhibited some level of “second year crisis”, in which a significant number of students felt abandoned, dissatisfied, or rebellious. The author extends and refines Clark’s developmental analogy (first year = childhood; second year = adolescence) to reflect recent neurological research, in particular, the shift from a right hemisphere-dominant first year of life, prioritising affiliative needs, to a left hemisphere-dominant second year, prioritising autonomy and control. This shift is paralleled later by a more gradual move from a protective, supportive childhood to necessary, but sometimes conflictual, individuation in adolescence. The first two years of a counsellor training programme broadly echo this process, a process exacerbated by the second year internship/placement, in which students must “leave home” and adjust to unfamiliar, potentially less nurturing, authority figures. Finally, the author suggests introducing more rigorous “academic holding” into the first year, and greater attention to “therapeutic holding” of dissident students in the second, hopefully decreasing student dropout, and achieving a better balanced training experience.

scholarly journals Do applications of systemic herbicides when green fruit are present prevent seed production or viability of Alliaria petiolata (garlic mustard)?

2021 ◽  
pp. 1-17
Author(s):  
Leo Roth ◽  
José Luiz C. S. Dias ◽  
Christopher Evans ◽  
Kevin Rohling ◽  
Mark Renz
Keyword(s):  
Seed Production ◽  
Seed Viability ◽  
Early Spring ◽  
Alliaria Petiolata ◽  
Late Spring ◽  
Garlic Mustard ◽  
Viable Seed ◽  
Application Timing ◽  
Control Seed ◽  
Second Year

Garlic mustard [Alliaria petiolata (M. Bieb.) Cavara & Grande] is a biennial invasive plant commonly found in the northeastern and midwestern United States. Although it is not recommended to apply herbicides after flowering, land managers frequently desire to conduct management during this timing. We applied glyphosate and triclopyr (3% v/v and 1% v/v using 31.8% and 39.8% acid equivalent formulations, respectively) postemergence to established, second-year A. petiolata populations at three locations when petals were dehiscing, and evaluated control, seed production and seed viability. Postemergence glyphosate applications at this timing provided 100% control of A. petiolata by 4 weeks after treatment at all locations whereas triclopyr efficacy was variable, providing 38-62% control. Seed production was only reduced at one location, with similar results regardless of treatment. Percent seed viability was also reduced, and when combined with reductions in seed production, we found a 71-99% reduction in number of viable seed produced plant-1 regardless of treatment. While applications did not eliminate viable seed production, our findings indicate that glyphosate and triclopyr applied while petals were dehiscing is a viable alternative to cutting or hand-pulling at this timing as it substantially decreased viable A. petiolata seed production. Management Implications Postemergence glyphosate and triclopyr applications in the early spring to rosettes are standard treatments used to manage A. petiolata. However, weather and other priorities limit the window for management, forcing field practitioners to utilize more labor-intensive methods such as hand-pulling. It is not known how late in the development of A. petiolata these herbicides can be applied to prevent viable seed production. Since prevention of soil seedbank replenishment is a key management factor for effective long-term control of biennial invasive species, we hypothesized late spring foliar herbicide applications to second year A. petiolata plants when flower petals were dehiscing could be an effective management tool if seed production or viability is eliminated. Our study indicated that glyphosate applications at this timing provided 100% control of A. petiolata plants by 4 weeks after treatment at all locations, whereas triclopyr efficacy was inconsistent. Although both glyphosate and triclopyr decreased viable seed production to nearly zero at one of our three study locations, the same treatments produced significant amounts of viable seed at the other two locations. Our findings suggest late spring glyphosate and triclopyr applications should not be recommended over early spring applications to rosettes for A. petiolata management, as our late spring application timing did not prevent viable seed production, and may require multiple years of implementation to eradicate populations. Nonetheless, this application timing holds value in areas devoid of desirable understory vegetation compared to no management practices or mechanical management options including hand-pulling when fruit are present, as overall viable seed production was reduced to similar levels as these treatments.

THE SEED PRODUCTION CAPACITY AND EFFICIENCY OF RED PINE CONES (PINUS RESINOSA AIT.)

1956 ◽  
Vol 34 (1) ◽  
pp. 27-36 ◽  
Author(s):  
L. A. Lyons
Keyword(s):  
Seed Production ◽  
Production Efficiency ◽  
Production Capacity ◽  
Pinus Resinosa ◽  
Proximal Part ◽  
Red Pine ◽  
First Year ◽  
Tree Crown ◽  
Second Year ◽  
Pine Cones

The seed capacity of red pine cones varies from about 30 to over 110, depending on the size of the cone and its position in the tree crown, and is determined by the number of ovules that are structurally complete at the time of pollination. These ovules occur in a central "productive" region and constitute less than one-half of the total. The remaining ovules, most: of which are in the proximal part of the cone, never become structurally perfect, and do not contribute to seed production. Abortion of ovules in the productive region usually reduces seed production efficiency to 50–60%, and is accompanied mainly by withering of the nucellus in the first year and failure to produce archegonia early in the second year. The extent of ovule abortion during the first year varies indirectly with cone size, seed capacity, and height in tree.

Influence of rotation and time of germinating rains on the productivity and composition of annual pastures in Western Australia

1998 ◽  
Vol 49 (2) ◽  
pp. 225 ◽  
Author(s):  
C. J. Thomson ◽  
C. K. Revell ◽  
N. C. Turner ◽  
M. A. Ewing ◽  
I. F. Le Coultre
Keyword(s):  
Western Australia ◽  
Plant Density ◽  
Seedling Survival ◽  
Subterranean Clover ◽  
Annual Rainfall ◽  
First Year ◽  
Botanical Composition ◽  
Pasture Production ◽  
Bromus Diandrus ◽  
Second Year

A long-term rotation experiment located in south-western Australia was used to measure the effect of rotation and time of germinating rains on the productivity and botanical composition of grazed annual pastures in 2 contrasting seasons in an environment with an average annual rainfall of 325 mm. The density of self-regenerating seedlings of subterranean clover (Trifolium subterraneum), capeweed (Arctotheca calendula), and grasses (Lolium rigidum, Hordeum leporinum, Bromus diandrus) was greatly increased (approx. 3 times the density) when there was a second year of pasture after crop compared with the first year after crop. The lower plant density resulted in first-year pastures having only about 33% of the autumn biomass accumulation of second-year pastures. This difference in early pasture growth had no effect on total pasture production in 1992, but in 1993 total pasture production was 30% greater in second-year pastures compared with first-year pastures. Botanical composition varied between and within seasons with the percentage of subterranean clover increasing throughout the season and the percentage of capeweed decreasing throughout the season. Grasses comprised <20% of the biomass in all seasons and treatments. Production of subterranean clover seed in 1993 was higher in a 1 : 2 crop-pasture rotation than in a 1 : 1 crop-pasture rotation and direct drilling in the cropping phase increased seed set compared with conventional tillage in both 1 : 1 and 1 : 2 crop-pasture rotations. Capeweed seedlings emerged in large numbers after rainfall between February and May and subsequently showed a relative growth rate twice that of subterranean clover and the grasses, but exclusion of rainfall until June resulted in a significant reduction in the emergence of capeweed seedlings. Additionally, capeweed had a lower rate of seedling survival compared with other pasture species, and this is contrary to observations by other researchers that capeweed is highly resistant to moisture stress during early growth.

Research in white clover seed production

1980 ◽  
Vol 1 ◽  
pp. 64-67
Author(s):  
P.T.P. Clifford
Keyword(s):  
Seed Production ◽  
White Clover ◽  
Growth Rates ◽  
Plant Density ◽  
First Year ◽  
Production Plant ◽  
Closing Date ◽  
General Management ◽  
Clover Seed ◽  
Seed Yields

White clover seed yields from crops derived from pure autumn broadcast sowings harvested in the first year after sowing were improved by increasing sowing rate from 3 to 6 kg/ha. On moisture-retentive soils or where irrigation was available, mid-November closings gave highest seed yields for crops derived from either spring undersowings of cereals or as ryegrass mixtures taken for ryegrass seed in the first year from sowing. Closing a month earlier gave similar yields if 30 cm rather than 15 cm row spacings were used. Harvest should be no later than one month from main flowering to reduce the numbers of seedheads lost. General management should aim to promote good primary stolon growth rates over the month prior to mid-December if high flowerhead densities are to be obtained. Therefore excessive grazing before closing and poor timing of herbicide spraying for grass control should be avoided. Keywords: Trifolium repens, seed production, plant density, closing date, pollination, seed harvesting, management.

scholarly journals Growth and development of the wild-growing subshrub Salsola orientalis SG Gmel. in culture under conditions of the Central Asian desert

2021 ◽  
Vol 901 (1) ◽  
pp. 012035
Author(s):  
E Z Shamsutdinova ◽  
Z Sh Shamsutdinov
Keyword(s):  
Growth And Development ◽  
Life Form ◽  
Plant Density ◽  
First Year ◽  
Ecological Stability ◽  
Central Asian ◽  
Second Year ◽  
Forage Value ◽  
First Year Of Life ◽  
Degraded Pastures

Abstract In terms of life form Salsola orientalis S.G. Gmel. is a semi-shrub; its height reaches 40–60 cm; in terms of ecology, it is a haloxerophyte, extremely resistant to salt stress, air, and soil droughts. Salsola orientalis is a highly nutritious forage plant containing up to 20% protein in the budding phase. High resistance to environmental stress and good forage value allow us to consider it as a promising plant – its introduction into culture allowed restoring the forage productivity of degraded pastures in the Central Asian desert. The features of growth and development of Salsola orientalis were studied for ecological and biological characteristics and the possibility of introducing it into culture. It was found that the laboratory germination of seeds of the wild-growing half-shrub Salsola orientalis was quite high – 20–60%; field germination was very low – 0.1–1.7%. The survival rate of seedlings in young plants depends on environmental conditions and plant density. Under conditions of the Central Asian desert the plants basically die in the first year, especially in the germination phase; in the second year we registered insignificant losses; in subsequent years the number of plants stabilized. Salsola orientalis was found to be a fast growing plant, forming a normal half-shrub in the first year of life. The high ecological stability of Salsola orientalis in combination with its deeply penetrating and powerfully developed root system ensures vigorous and rapid growth. Under conditions of the Central Asian desert Salsola orientalis yields 1.3–1.7 t/ha of dry fodder mass, which is 4–5 times higher than the fodder productivity of natural desert pastures.

scholarly journals Characteristics of growth and development of perennial grasses on the basis of meadow tetraploid clover

2019 ◽  
Vol 20 (3) ◽  
pp. 247-255
Author(s):  
N. I. Kasatkina ◽  
Zh. S. Nelyubina
Keyword(s):  
Plant Density ◽  
Phleum Pratense ◽  
Perennial Grasses ◽  
High Yield ◽  
Soil Conditions ◽  
First Year ◽  
Timothy Grass ◽  
The Third ◽  
Grass Stand ◽  
Second Year

Perennial grasses are less dependent on weather and soil conditions than other crops due to their plasticity, low demand for growing conditions, and a large variety of species. In 2013-2017 in the conditions of the Udmurt Republic the biological properties of meadow tetraploid clover (Trifolium pratense L.), alfalfa changeable (Medicago x varia Martyn), birds-foot trefoil (Lotus corniculatus L.), eastern galega (Galéga orientális Lam.) and timothy grass (Phleum pratense L.) in double and triple agrocenoses were studied according to the age of the grass stand and the term of mowing. Plant density of perennial grasses in agrocenoses depended on the biological characteristics of the species, the age of grass stand and the term of mowing. In the first year of use of agrophytocenoses the density of stalk stand was at the level of 374-542 pcs /m2, in the second year of use it was a little higher (348-688 pcs /m2), in the third year of use – 240-594 pcs /m2. High density of meadow tetraploid clover in the grass stand was noted in the second year of use – 266-520 pcs/m2. The number of timothy grass stems (122-194 pcs/m2) in the grass mixture was high even in the first year of grass stand use, in the following years there was a further increase of this indicator to 196-412 pcs/m2. By the third year of use there was an increase in the number of stems of alfalfa changeable to 86-148 pcs/m2 and birds-foot trefoil – up to 108-200 pcs/m2. The plant density of the eastern galega in agrocenoses was low. The agrometeorological conditions of the year and the term of mowing affected the height and leafiness of perennial grass plants in agrocenoses. The leafiness of meadow tetraploid clover reached 64%, of the eastern galega – 74%. Timothy grass plants were less leafy – 23-38%. The height  of meadow clover plants was at the level of 51 cm, of timothy grass – 75-78 cm. Birds-foot trefoil was the shortest component of grass mixtures. High yield of dry mass of single-species sowing of meadow tetraploid clover was obtained in the first two years of use – 7.8 and 6.5 t/ha, respectively. By the third year of use, the productivity of clover decreased to 2.9 t/ha. The highest yields for the years of research were formed by the following agrocenoses: clover + alfalfa, clover + timothy, and clover + alfalfa + timothy – 5.9-6.3 t/ha.

scholarly journals PENGARUH PENGAIRAN TERHADAP PRODUKSI DAN KANDUNGAN MINYAK BIJI TIGA PROVENAN JARAK PAGAR (Jatropha curcas L.)

2020 ◽  
Vol 17 (2) ◽  
pp. 67
Author(s):  
PRIMA DIARINI RIAJAYA ◽  
BUDI HARIYONO
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Jatropha Curcas ◽  
Oil Content ◽  
Seed Oil ◽  
Dry Season ◽  
First Year ◽  
Seed Oil Content ◽  
Jatropha Curcas L ◽  
Second Year

<p>ABSTRAK</p><p>Penelitian lapang dilakukan di Kebun Percobaan Balai PenelitianTanaman Tembakau dan Serat di Muktiharjo, Pati dengan tekstur tanah liatberdebu mulai tahun 2007 sampai 2009. Penelitian bertujuan untukmengetahui respon pengairan terhadap produksi dan kadar minyak bijijarak pagar. Jarak pagar ditanam pada bulan Februari 2007. Percobaanmenggunakan rancangan petak berjalur dengan tiga ulangan yang terdiridari dua faktor, yaitu faktor pertama : provenan IP-1A, IP-1M, dan IP-1P,dan faktor kedua yaitu kriteria pengairan : kontrol (tanpa pengairan),pengairan saat kandungan air tanah mencapai 35, 50, dan 65%. Pengairandiberikan selama musim kemarau. Pemangkasan pertama dilakukan padatahun II yaitu awal musim hujan (September 2008). Hasil penelitianmenunjukkan bahwa tambahan pengairan hanya diperlukan pada tahunpertama. Produksi biji jarak pagar tidak dipengaruhi oleh irigasi mulaitahun II sehingga tanaman jarak pagar tidak memerlukan tambahanpengairan selama musim kemarau dan dapat beradaptasi pada berbagaiketersediaan air tanah terutama pada daerah dengan curah hujan tahunan1.200-1.500 mm. Produksi biji IP-1P pada tahun I mencapai 258,7 kg/halebih tinggi dibanding IP-1A yaitu 148,11 kg/ha bila diairi saat kandunganair tanah 65%. Bila tidak diairi atau pengairan terbatas, produksi biji IP-1Adan IP-1P akan menurun masing-masing 37-59 dan 17-31%. Pada berbagaiperlakuan pengairan pada tahun II dan III, kisaran produksi biji 842-975dan 818-966 kg/ha. Pada tahun II, tanaman IP-1P menghasilkan produksibiji tertinggi (1.369 kg/ha) dibanding IP-1A (737 kg/ha) dan IP-1M (631kg/ha). Selanjutnya pada tahun III, produksi biji IP-1P (1.268 kg/ha) tetaplebih unggul dibanding IP-1A (902 kg/ha) dan IP-1M (416 kg/ha).Keunggulan IP-1P dibanding provenan lainnya adalah kemampuannyayang lebih tinggi dalam membentuk cabang produktif dan buah. Tambahanpengairan selama musim kemarau pada tahun I selain untuk meningkatkanproduksi biji juga meningkatkan kandungan minyak biji IP-1A dari 27,26menjadi 29,89% dan IP-1P dari 26,54 menjadi 30,05%. Selanjutnya padatahun II, tambahan pengairan sampai kandungan air tanah 50% tidakmempengaruhi kandungan minyak biji IP-1A, IP-1M, dan IP-1P.</p><p>Kata kunci: Jarak pagar, ketersediaan air tanah, pengairan, produksi biji,kandungan minyak biji</p><p>ABSTRACT</p><p>Effects of irrigation on seed production and oil content ofthree provenances of physic nut (Jatropha curcas L.)</p><p>A field experiment was conducted at the experiment station ofIndonesian Tobacco and Fiber Crops Research Institute in Muktiharjo, Pation a soil texture of silty clay for three years from 2007 to 2009. Theexperiment aimed to investigate the response of irrigation on productionand oil content of jatropha seed. Jatropha was planted in February 2007.The experiment used a striped plot design with three replicates. Itconsisted of two factors, firstly three provenances : IP-1A, IP-1M, and IP-1P, and secondly four irrigation levels : control (no irrigation), irrigationwhen available soil water content reached 35, 50, and 65%. Irrigation wasapplied during the dry season. The first pruning was done in the secondyear during rainy season (September 2008). The results showed thatsupplementary irrigation was needed only in the first year. The productionof jatropha seeds was not affected by irrigation from the second year on.The plants did not require additional irrigation during the dry season andthey well adapted to different soil available water, especially in areas withannual rainfall of 1,200-1,500 mm. When no irrigation supply or underinsufficient moisture content, the seed yield of IP-1A and IP-1P decreasedby 37-59 and 17-31%. In the second and third years, seed production of allirrigation treatments ranged from 842-975 and about 818-966 kg/ha. IP-1Pproduced the highest seed yield (1,369 kg/ha) compared to IP-1A (737kg/ha) and IP-1M (631 kg/ha) second year. In the third year, seedproduction of IP-1P was 1,268 kg/ha which was still more superior thanIP-1A (902 kg/ha) and IP-1M (416 kg/ha). Compared to the other twoprovenances, IP-1P was higher ability in producing productive branchesand fruits. In addition to increase in seed production, supplementaryirrigation during the dry season in the first year also increased seed oilcontent from 27.26 to 29.89% for IP-1A and from 26.54 to 30.05% for IP-1P. Furthermore, in the second year an additional irrigation to soilavailable water of 50% did not affect the seed oil content of allprovenances.</p><p>Key words: Jatropha curcas L., soil available water, irrigation, seedyield, seed oil content</p>

Seed production of cut-leaved teasel (Dipsacus laciniatus) in central Missouri

Biologia ◽  
2011 ◽  
Vol 66 (5) ◽  
Author(s):  
Diego Bentivegna ◽  
Reid Smeda
Keyword(s):  
Linear Regression ◽  
Seed Production ◽  
Native Species ◽  
Field Studies ◽  
First Year ◽  
Invasive Weed ◽  
Seed Field ◽  
Second Year ◽  
Total Seed ◽  
Number Of Seeds

AbstractCut-leaved teasel is an invasive weed in Missouri that reduces the diversification of native species along roadsides and impairs traffic visibility. Teasel is a biennial and grows as a rosette in the first year and flowers the second year. Reproduction is only by seed. Field studies were conducted in 2004 and 2005 at two locations to assess the seed production of cut-leaved teasel. From a natural stand, fifteen plants were tagged at the onset of flowering. Selected plants included those considered growing in a group and those growing alone; a plant was considered alone when no other plant was adjacent for at least 60 cm. Whenever a seedhead completed flowering, it was covered with a cellophane bag and harvested one month later. Linear regression was used to correlate the weight of seeds from a single seedhead and number of seeds to estimate the total seed production per seedhead. The number of seedheads per plant varied from 3 to 56. On average, plants growing alone had 64% more seedheads per plant than plants occurring in a group. Seed numbers in the primary seedhead ranged from 511 to 1,487. Total seed production per plant ranged from 1,309 to 33,527. Seed production was 61% greater for plants growing alone versus those growing in a group and was more prolific in 2005 than in 2004. In addition, seed production per plant varied between locations for plants growing alone, but seed yield per plant was similar for plants growing in groups. Colonization of teasel in new areas is facilitated by higher seedhead numbers per plant and total seed production compared to reproduction of plants in areas of intraspecific competition.

scholarly journals Productivity of common Saint-John's wort (Hypericum perforatum L.) by using transplant reproduction method in the conditions of drip irrigation

2021 ◽  
pp. 153-161
Author(s):  
N. V. Pryvedenyuk ◽  
A. P. Shatkovskyi
Keyword(s):  
Drip Irrigation ◽  
Plant Density ◽  
Unit Area ◽  
Raw Materials ◽  
Fertilizer Application ◽  
First Year ◽  
St John’S Wort ◽  
St John's Wort ◽  
Second Year ◽  
Reproduction Method

The influence of plant nutrition area and mineral fertilizer rates on the productivity of St. John's wort (Hypericum perforatum L.) by using transplant reproduction method in the conditions of drip irrigation was studied. It was proved that the transplant method of cultivation of St. John's wort under drip irrigation is a very effective method of reproduction of this crop. Four variants of  planting density per unit area were studied: 42 thousand plants / ha (cultivation scheme 60x40 cm), 56 thousand plants / ha (60x30 cm), 83 thousand plants / ha (60x20 cm) and 167 thousand plants / ha (60x10 cm). Yield recording of raw materials (air-dry tops) was carried out in the phase of mass flowering. In the first year of vegetation this period was in the first decade of August, in the second year – in the second decade of June. It was found that the increase in the number of planted plants of St. John's wort per 1 ha contributed to the increased plantation productivity. When having a cultivation plant density of 42,000 plants / ha, the yield of dry grass in the first year of vegetation was 3,02 t / ha. Increasing the number of plants to 56 thousand plants / ha provided 3,26 t / ha of raw materials. The highest yield of dried St. John's wort – 3,76 t / ha in the first year of vegetation was obtained in the variant with the largest number of planted plants per unit area - 167 thousand plants / ha. In the second year of vegetation of St. John's wort in the variant with the lowest plant density of 42 thousand plants / ha, the yield was 3,65 t / ha. The most productive plantation of the second year of vegetation was in the variant with a plant density of 83 thousand plants / ha, where the yield of dry raw materials was 3,96 t / ha. A further increase in the number of plants per unit area led to a decrease in crop yields. The influence of four variants of the main application of mineral fertilizers on the productivity of St. John's wort was also studied: N0P0K0 (reference), N60P60K60, N120P120K120 and N180P180K180. It was found that with increasing fertilizer application rate, the yield of dry raw materials increased. The most favorable conditions for growth and development of plants of St. John's wort developed in the variant with the maximum rate of fertilizer application - N180P180K180, where the yield of dry raw materials in the first year was 3,31 t / ha, and in the second year – 4,15 t / ha, which exceeded the reference result (without fertilizers) by 0,61 t / ha and 0,84 t / ha, respectively.

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