scholarly journals Planting method and seeding rate effect on whole and partitioned soybean yield

age ◽  
2021 ◽  
Vol 4 (3) ◽  
Author(s):  
Spyros Mourtzinis ◽  
Adam Roth ◽  
John Gaska ◽  
Shawn P. Conley
Keyword(s):  
Rate Effect ◽  
Seeding Rate ◽  
Soybean Yield ◽  
Planting Method

scholarly journals The Effects of Management (Tillage, Fertilization, Plant Density) on Soybean Yield and Quality in a Three-Year Experiment under Transylvanian Plain Climate Conditions

Land ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 200
Author(s):  
Felicia Chețan ◽  
Cornel Chețan ◽  
Ileana Bogdan ◽  
Adrian Ioan Pop ◽  
Paula Ioana Moraru ◽  
...  
Keyword(s):  
Plant Density ◽  
Conventional Tillage ◽  
Quality Parameters ◽  
Soil Tillage ◽  
Reduced Tillage ◽  
Seeding Rate ◽  
Soybean Yield ◽  
Climate Conditions ◽  
Yield And Quality ◽  
Tillage System

The regional agroecological conditions, specific to the Transylvanian Plain, are favorable to soybean crops, but microclimate changes related to global warming have imposed the need for agrotechnical adaptive measures in order to maintain the level of soybean yield. In this study, we consider the effect of two soil tillage systems, the seeding rate, as well as the fertilizer dosage and time of application on the yield and quality of soybean crops. A multifactorial experiment was carried out through the A × B × C × D − R: 3 × 2 × 3 × 3 − 2 formula, where A represents the year (a1, 2017; a2, 2018; and a3, 2019); B represents the soil tillage system (b1, conventional tillage with mouldboard plough; b2, reduced tillage with chisel cultivator); C represents the fertilizer variants (c1, unfertilized; c2, one single rate of fertilization: 40 kg ha−1 of nitrogen + 40 kg ha−1 of phosphorus; and c3, two rates of fertilization: 40 kg ha−1 of nitrogen + 40 kg ha−1 of phosphorus (at sowing) + 46 kg ha−1 of nitrogen at V3 stage); D represents the seeding rate (1 = 45 germinating grains (gg) m−2; d2 = 55 gg m−2; and d3 = 65 gg m−2); and R represents the replicates (r1 = the first and r2 = the second). Tillage had no effect, the climate specific of the years and fertilization affected the yield and the quality parameters. Regarding the soybean yield, it reacted favorably to a higher seeding rate (55–65 gg m−2) and two rates of fertilization. The qualitative characteristics of soybeans are affected by the fertilization rates applied to the crop, which influence the protein and fiber content in the soybean grains. Higher values of protein content were recorded with a reduced tillage system, i.e., 38.90 g kg−1 DM in the variant with one single rate of fertilization at a seeding rate of 45 gg per m−2 and 38.72 g kg−1 DM in the variant with two fertilizations at a seeding rate of 65 gg m−2.

Row Spacing and Seeding Rate Effects on Eastern Black Nightshade (Solanum Ptycanthum) and Soybean

2007 ◽  
Vol 21 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Adrienne M. Rich ◽  
Karen A. Renner
Keyword(s):  
Dry Weight ◽  
Field Studies ◽  
Production Costs ◽  
Row Spacing ◽  
Seeding Rate ◽  
Soybean Yield ◽  
Eastern Black Nightshade ◽  
Solanum Ptycanthum ◽  
Black Nightshade ◽  
Rate Effects

Reducing seeding rates in 19- or 76-cm row soybean below the optimum rate may reduce soybean competitiveness with weeds, and indirectly increase production costs to the grower. Field studies in 2001 and 2002 evaluated the effect of soybean seeding rate and row spacing on the emergence, growth, and competitiveness of eastern black nightshade (EBN) in soybean. EBN emergence ceased within 45 d after planting (DAP), and was similar across soybean seeding rates and row spacing. EBN control by glyphosate was not affected by soybean population or row spacing. Soybean planted in 19-cm rows was more competitive with EBN, regardless of seeding rate. Increasing the soybean seeding rate in 76-cm rows from 185,000 seeds/ha to 432,000 seeds/ha reduced EBN dry weight threefold at East Lansing and nearly twofold at Clarksville in 2002. There was no increase in EBN density or dry weight in 19-cm row soybean planted at 308,000 seeds/ha compared with 556,000 seeds/ha, whereas a seeding rate of 432,000 seeds/ha in 76-cm row soybean did not suppress EBN dry weight or increase soybean yield in the presence of EBN compared with a seeding rate of 308,000 seeds/ha.

scholarly journals Effectiveness of bio-agents in soybean

2019 ◽  
pp. 70-78
Author(s):  
V. S. Zadorozhnyi ◽  
V. V. Karasevych ◽  
S. M. Svytko ◽  
A. V. Labunets ◽  
A. V. Kniaziuk
Keyword(s):  
Biological Control ◽  
Mineral Nutrition ◽  
Forest Soils ◽  
Scientific Research ◽  
Forest Steppe ◽  
Seeding Rate ◽  
Nitrogen And Phosphorus ◽  
Soybean Yield ◽  
Soybean Plants ◽  
The Right

As a result of the scientific research (2016—2018), it was established that in the conditions of the right-bank Forest-Steppe of Ukraine it is appropriate to treat seeds with the agents Microhumin (200 mg per hectare seeding rate) + Biophosphorin (1.5 l/t) and spray crops with Gaupsin (4.0 l/ha) in the budding phase or treat seeds with Rhizobophite (2.0 l per hectare seeding rate) + Phytodoctor (1.0 l/t) and spray crops with Triсhodermine (2.0 l/ha), which ensures the rate of preserved soybean yield by 13—14 %, to improve mineral nutrition of soybean plants with nitrogen and phosphorus on gray forest soils and complex biological control of crops against major diseases, e.g. Peronospora manshurica Sydow., Septoria glycines T. Hemmi, Ascochyta sojaecola Abramov., and pests, e.g. Etiella zinckenella Tr., Adelphocoris linearolatus Goeze.

scholarly journals ФОРМУВАННЯ ПЛОЩІ ЛИСТКОВОЇ ПОВЕРХНІ ПОСІВІВ СОЇ ЗАЛЕЖНО ВІД СОРТУ, СПОСОБУ СІВБИ ТА НОРМИ ВИСІВУ В УМОВАХ НЕДОСТАТНЬОГО ЗВОЛОЖЕННЯ ЛІСОСТЕПУ

2017 ◽  
pp. 167-171
Author(s):  
І. І. Лотиш
Keyword(s):  
Photosynthetic Activity ◽  
Leaf Surface ◽  
Seeding Rate ◽  
Photosynthetic Potential ◽  
Planting Method

            Одержання максимально можливої для того чи іншого сорту сої продуктивності безпосередньо залежить від складових технологій, які забезпечують формування оптимальної площі листкової поверхні та тривалості її фотосинтетичної активності. Вивчення фотосинтетичного потенціалу посівів сортів сої виявило, що найбільший показник був на ділянках з нормою висіву 800 тис./га: за рядкової сівби – 2,19–2,34 млн м2 дн/га, за широкорядної сівби – 2,16–2,27 млн м2 дн/га. Інтенсивність фотосинтезу залежно від варіантів досліду коливалася: за рядкового способу сівби в межах від 11,55 до 12,40 мг СО2 дм2/год., за широкорядного способу сівби – від 11,33  до 12,06 мг СО2 дм2/год. Залежно від норми висіву та способу сівби листковий індекс становив для сортів відповідно: Романтика – від 3,89 до 4,13 м2 листка/м2, Устя – від 3,88 до 3,99, Ворскла – від 3,80 до 3,92  м2 листка/м2.               Getting the maximum possible productivity of any sort of soybeans depends on the component technologies that provide optimal formation of leaf surface and duration of photosynthetic activity. The study of photosynthetic potential of crop soybean sorts showed that the highest rate was in the areas with a seeding rate of 800 thousand/ha: row planting sowing – 2,19–2,34 million m2 days/ha for sowing in wide row – 2,16–2,27 million m2 day/ha. The intensity of photosynthesis depending on the options ranged experiment: the row planting method in the range of 11,55 to 12,40 mg CO2 dm2/day wide row planting way – from 11,33 to 12,06 mg CO2 dm2/h. Depending on the seeding rate and method of sowing was layered index according to the sorts: Romantyka – from 3,89 to 4,13 m2 leaf/m2, Ustya – from 3,88 to 3,99, Vorskla – from 3,80 to 3,92 leaf m2/m2.

Minimizing competition between glyphosate-resistant volunteer canola (Brassica napus) and glyphosate-resistant soybean: impact of soybean planting date and rate

2019 ◽  
Vol 34 (2) ◽  
pp. 220-228
Author(s):  
Allyson Mierau ◽  
Eric N. Johnson ◽  
Robert H. Gulden ◽  
Jessica D. Weber ◽  
William E. May ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Economic Analysis ◽  
Market Price ◽  
Planting Date ◽  
Optimal Rate ◽  
Western Canada ◽  
Seeding Rate ◽  
Planting Dates ◽  
Soybean Yield ◽  
The Impact

AbstractIn recent years, soybean acreage has increased significantly in western Canada. One of the challenges associated with growing soybean in western Canada is the control of volunteer glyphosate-resistant (GR) canola, because most soybean cultivars are also glyphosate resistant. The objective of this research was to determine the impact of soybean seeding rate and planting date on competition with volunteer canola. We also attempted to determine how high seeding rate could be raised while still being economically feasible for producers. Soybean was seeded at five different seeding rates (targeted 10, 20, 40, 80, and 160 plants m−2) and three planting dates (targeted mid-May, late May, and early June) at four sites across western Canada in 2014 and 2015. Soybean yield consistently increased with higher seeding rates, whereas volunteer canola biomass decreased. Planting date generally produced variable results across site-years. An economic analysis determined that the optimal rate was 40 to 60 plants m−2, depending on market price, and the optimal planting date range was from May 20 to June 1.

Effect of Row Spacing and Seeding Rate on Soybean Yield

2008 ◽  
Vol 100 (3) ◽  
pp. 704-710 ◽  
Author(s):  
Jason L. De Bruin ◽  
Palle Pedersen
Keyword(s):  
Row Spacing ◽  
Seeding Rate ◽  
Soybean Yield

Row spacing is more important than seeding rate for increasing Rhodes grass (Chloris gayana) control and grain yield in soybean (Glycine max)

2017 ◽  
Vol 68 (7) ◽  
pp. 620 ◽  
Author(s):  
Ghulam Rasool ◽  
Gulshan Mahajan ◽  
Rajpaul Yadav ◽  
Zarka Hanif ◽  
Bhagirath Singh Chauhan
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Weed Management ◽  
Management Program ◽  
Row Spacing ◽  
Seeding Rate ◽  
Rhodes Grass ◽  
Soybean Yield ◽  
Chloris Gayana ◽  
Grass Biomass

In Australia, soybean (Glycine max (L.) Merr.) is planted at a low density in wide rows, and weeds substantially reduce yield because of opportunities for their growth in the wide rows. Field studies were conducted over 2 years at the University of Queensland farm, Gatton, Australia, to assess the effect of row spacing and seeding rate on the competitiveness of soybeans with a model weed, Rhodes grass (Chloris gayana Kunth). The experiment was conducted in a split-split plot design, replicated three times. Main plots comprised two seeding rates (40 and 80 kg ha–1), subplots two row spacings (25 and 75 cm), and sub-subplots four Rhodes grass infestation periods (weedy from planting to maturity, weedy from 3 weeks after planting (WAP) to maturity, weedy from 6 WAP to maturity, and weed-free from planting to maturity). The results showed that seed rate did not influence Rhodes grass biomass or soybean yield. Soybean yield was greater and Rhodes grass biomass was less in the 25-cm rows than the 75-cm rows. For the 25-cm rows, Rhodes grass biomass in the plots infested beyond 3 WAP was 81–89% less than in the season-long weedy plots, whereas for the wider row crop, this reduction was only 60–75%. For the 25-cm rows, soybean yield in the plots infested with Rhodes grass beyond 3 WAP was 30–36% less than under weed-free condition. However, for the 75-cm rows, this reduction was 56–65%. The results suggest that planting soybean in wider rows caused greater reduction in yield and required an earlier weed management program than planting in narrow rows. The study also suggested that narrowing row spacing was more important than increasing seeding rates for improving weed control and soybean grain yield.

EFFECT OF ROW WIDTH AND POPULATION ON SOYBEAN YIELD IN SOUTHWESTERN ONTARIO

1984 ◽  
Vol 64 (1) ◽  
pp. 9-15 ◽  
Author(s):  
A. D. McLAREN ◽  
G. R. ABLETT ◽  
J. C. SCHLEIHAUF
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Yield Response ◽  
Row Spacing ◽  
Seeding Rate ◽  
Soybean Yield ◽  
Row Width ◽  
Glycine Max L

The effect of seeding rate (seeds per hectare) and row width (distance between rows) was examined for various adapted soybean (Glycine max (L.) Merr.) cultivars in southwestern Ontario. Maple Arrow, Harosoy 63 and Harcor cultivars were grown in 18-, 35-, 53-, 71-, and 89-cm row widths seeded at 198 000, 395 000, and 593 000 seeds/ha during 1978 and 1979. The greatest yields were associated with the two narrowest row widths and the two highest seeding rates. Plant height, lodging, and bottom pod height varied mainly with seeding rate and cultivar. In another 2-yr study (1980 and 1981) Maple Arrow, Evans, S1346, Hodgson, A2575, and Harcor were grown at four row widths (18, 35, 53, and 71 cm) and two seeding rates (395 000 and 593 000 seeds/ha). A significant cultivar × row width interaction for yield occurred with Maple Arrow and Harcor showing the greatest yield response. Although a small seeding rate × cultivar interaction occurred, generally, seeding rates between 395 000 and 593 000 seeds/ha were adequate for all cultivars and all row widths.Key words: Glycine max (L.) Merr., seeding rate, row spacing, lodging, yield

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