Responses of soybeans to two row spacings and two soil water levels. II. Water use, root growth and plant water status

Mason, W. K.; Rowse, H. R.; Bennie, A. T.P.; Kaspar, T. C.; Taylor, Howard M.

doi:10.1016/0378-4290(82)90003-x

Cited by 51 publications

(35 citation statements)

References 13 publications

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“…The corresponding yields for the non-irrigated treatments were 2.07, 1.97, and 2.24 t/ha. The slightly higher yields on the 0.15-m row spacing of the irrigated treatment may reflect the earlier increase in LAI and light interception as reported by Shibles and Weber (1966) and is in general agreement with the work of Taylor (1980), Mason et al (1982), Taylor et al (1982} andReicosky et al (1982). The slightly lower yields on the 0.15-m and 0.46-m row spacing compared to the 0.76-m row spacing non-irrigated treatment may reflect the earlier soil water extraction resulting in less available water during the critical pod filling period.…”

Section: B~ T a B L E I S U M M A R Y Of Daily W E A T H E R Data Colsupporting

confidence: 81%

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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Section: B~ T a B L E I S U M M A R Y Of Daily W E A T H E R Data Colsupporting

confidence: 81%

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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“…Taylor and Klepper (1974) reported that young cotton plants developed much deeper root systems under conditions of frequent superfi cial application of water to surface soil than those grown with suffi cient water. This type of promotion of rooting depth by surface irrigation was reported for lupin (Devries et al, 1989;Rodringues et al, 1995), soybean (Finn and Brun, 1980;Mason et al, 1982;Hoogenboom et al, 1987), maize (Robertson et al, 1980;Sharp and Davies, 1985;Newell and Wilhelm, 1987), lettuce (Gallardo et al, 1996) and sorghum (Burch et al, 1978). These results showed that the change in lateral root development, i.e.…”

supporting

confidence: 64%

Sugar Accumulation along the Seminal Root Axis, as Affected by Osmotic Stress in Maize: A Possible Physiological Basis for Plastic Lateral Root Development

Ogawa

Kawashima

Yamauchi

2005

Plant Production Science

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“…Cox and Jolliff (1987) (Shouse et al, 1982). Reduction in soybean transpiration and photosynthesis has been reported in response to a similar water deficiency (Boyer, 1970;Huang et al, 1975 Nelson (1965, 1971) (Brady et al, 1974;Heatherly et al, 1977;Mason et al, 1982;Cortes and Sinclair, 1986;Neyshaboury and Hatfield, 1986;Cow and Jolliff, 1987), and in PWP (Brady et al, 1974;Heatherly et al, 1977;Turner et al, 1978;Cortes and Sinclair, 1986 (1985) suggested that with PAW = 50 the soybean water use was 74% of the MET. Burch et al (1978) found that PAW = 50 was a threshold for the ratio WU:MET, and Constable and Hearn (1980), reported that for maximum yield, PAW > 60 was required during pod filling.…”

Section: Introductionmentioning

confidence: 99%

Water deficits during reproductive growth of soybeans. II. Water use and water deficiency indicators

et al. 1991

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Responses of soybeans to two row spacings and two soil water levels. II. Water use, root growth and plant water status

Cited by 51 publications

References 13 publications

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

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

Sugar Accumulation along the Seminal Root Axis, as Affected by Osmotic Stress in Maize: A Possible Physiological Basis for Plastic Lateral Root Development

Water deficits during reproductive growth of soybeans. II. Water use and water deficiency indicators

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