The Effect of Different Row Spacings and Plant Arrangements on Soybeans

Safo-Kantanka, O.; Lawson, N. C.

doi:10.4141/cjps80-031

Cited by 10 publications

(8 citation statements)

References 4 publications

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“…Soybean yield responses to plant density and row spacing have been studied extensively during the past two decades. Many studies examined physiological responses to narrow row spacing (7.5-inch or less) as this management system evolved (5,6,9,13,14,16,26). Early seeding rate recommendations for soybean grown in narrow rows were quite high (~ 200,000 seed/acre), but seed costs were quite low prior to the release of herbicide tolerant varieties (27).…”

Section: Introductionmentioning

confidence: 99%

Soybean Yield and Yield Component Response to Plant Density in Narrow Row Systems

Epler

Staggenborg

2008

Crop Management

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Soybean (Glycine max) yield is responsive to changes in plant population and row spacing under dryland conditions. Soybean seeding rate recommendations in many states were developed prior to the release of herbicide tolerant varieties when soybean seed costs were lower. As a result, many recommendations are high, and soybean performance at low plant densities in narrow rows needs to be reevaluated. This study was conducted to evaluate soybean yield response to plant density in narrow row, drilled systems (7.5 and 15 inches) and evaluate the effects of plant population on yield components. The study was conducted in six environments with optimum plant populations ranging from 80,000 to 140,000 plants/acre. The two yield components responsible for the yield optimization were pods per plant and pods per acre. As plant population increased, pods per plant decreased steadily; however, yield was not reduced either year of the study by the loss of pods per plant because pods per acre increased as plant population increased. The optimum seeding rates for each year of the study were below the 150,000 to 160,000 plants/acre seeding rate normally recommended in the region. The decreased optimum plant populations in both years did not adversely affect yield and might be useful in reducing input costs in dryland soybean production.

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Section: Introductionmentioning

confidence: 99%

Soybean Yield and Yield Component Response to Plant Density in Narrow Row Systems

Epler

Staggenborg

2008

Crop Management

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“…The data suggested narrow rows may be beneficial for soybean production when water is not restricting, i.e., with irrigation. Somewhat conflicting results have been reported by Safo-Kantanka and Lawson (1980) in Canada. While they observed a trend of decreasing yields as row width increased this decrease was not significant.…”

Section: Introductionmentioning

confidence: 67%

Soybean evapotranspiration, leaf water potential and foliage temperature as affected by row spacing and irrigation

Reicosky

Warnes

Evans

1985

Field Crops Research

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Field Crops Res., 10 : 37--48.Information is needed on the effects of soybean row spacing as a management practice for improving water use efficiency. Our objective was to show the effect of soybean (Glycine max (L.) Merr. cv. 'Evans') row spacing and irrigation on evapotranspiration (ET), leaf water potential (~j~), and foliage temperatures (TF) in western Minnesota.Soybeans were planted in 0.15-and 0.46-m rows with a grain drill, and 0.76-m rows with a row crop planter at an average final population of 571 000 plants per ha on a Sioux sandy loam (Family sandy skeletal mixed, subgroup Udorthentic Haploboroll). Sprinkler irrigation was applied in 25-ram amounts to the irrigated plots when the average matric potential at the 0.3-m depth was-30 kPa.On selected days in the growing season, measurements of ET using a portable chamber, u)sing the pressure chamber, TF using an infrared thermometer, and dry (TA) and wet bulb temperatures using an aspirated psychrometer were made simultaneously on a given treatment. Hourly weather data were collected 2.2 km from the experimental site to characterize the daily climate and evaporative demand. Leaf area index and light interception by the canopy were determined in 7-to 10-day intervals.Early in the season ET on the non-irrigated plots was slightly higher for the 0.15-m row spacing than the 0.46-and 0.76-m row spacing and was related to light interception. Differences in midday ~, due to row spacing were not discernible due to scatter in the data, and only with severe water stress were the ~J~ differences due to irrigation noteworthy. The row spacings effects on the TF-TA differences agreed with the ET trends on the non-irrigated plots. Only the yield differences due to irrigation were significant. For the irrigated treatments, the yields were 3.35, 3.09, 3.07 t/ha for the 0.15-, 0.46-, and 0.76-m row spacings, respectively, while the corresponding yields for the non-irrigated treatments were 2.07, 1.97, 2.24 t/ha.Trade names and company names are included for the benefit of the reader and do not infer any endorsement or preferential treatment of the product listed by the U.S. Department of Agriculture or the University of Minnesota.0378-4290/85/$03.30

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“…3. The effect of planting configuration on the development per plant of (a) total dry weight, (6) pod dry weight, (c) leaf dry weight, Safo-Kantanka & Lawson (1980) that neither soya-bean seed yield nor yield components showed any significant response to row spacing. In the same trial, the 0-4 x 0-3 m plants, with the most pods, did not out-yield the other configurations because other components of yield were reduced in magnitude.…”

Section: Discussionmentioning

confidence: 97%

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics: 5. Effect of planting configuration

Tayo

1983

J. Agric. Sci.

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In two field trials in 1982, the seeds of pigeon pea (cv. Cita-1) were planted at three configurationsof0-6x0-2m;0-4x0-3mand0-35x 0-35m(onl4Apriland24June)giving the same projected population density of 83 000 plants/ha foreachconfiguration, in order to evaluate the best planting configuration for maximum productivity of the crop.In the first trial, the 0-35 x 0-35 m configuration developed the highest magnitude of vegetative characters whilst the 0-4 x 0-3 m configuration had the highest number of seed-bearing pods, although seed yield was similar in all the treatments. In the second trial, the 0-4 x 0-3 m configuration developed the highest magnitude of growth and yield characters and thereby out-yielded the other two configurations.The results show that in the early planting of pigeon pea, population density per se is most important in determining seed yield whereas planting configuration also becomes important in late planting where plant size is reduced as a consequence of the prevailing local conditions.

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The Effect of Different Row Spacings and Plant Arrangements on Soybeans

Cited by 10 publications

References 4 publications

Soybean Yield and Yield Component Response to Plant Density in Narrow Row Systems

Soybean Yield and Yield Component Response to Plant Density in Narrow Row Systems

Soybean evapotranspiration, leaf water potential and foliage temperature as affected by row spacing and irrigation

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics: 5. Effect of planting configuration

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