Radiant energy conversion in three cultivars of Phaseolus vulgaris

Coulson, C.L.

doi:10.1016/0168-1923(85)90071-1

Cited by 16 publications

(6 citation statements)

References 11 publications

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“…This suggests that green leaves were present until the end of the growing seasons, and this was in fact observed in the field. Similar F curves were reported for beans (Coulson 1985), sorghum (Muchow and Coates 1986), sorghum–pigeonpea intercropping (Natarajan and Willey 1985), maize–cowpea intercropping (Watiki et al. 1993) and sorghum–cowpea (Gilbert et al.…”

Section: Radiation Interception and Usesupporting

confidence: 76%

Shade Effects on Phaseolus vulgaris L. Intercropped with Zea mays L. under Well‐Watered Conditions

Tsubo¹,

Walker²

2004

J Agronomy Crop Science

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Field experiments were carried out under unstressed conditions of soil water during two summer crop growing seasons (1998-99 and 1999-2000 seasons) in a South African semi-arid region (Bloemfontein, Free State, South Africa). The aim of this study was to investigate shade effects on beans intercropped with maize in terms of plant mass and radiation use. The experimental treatments were two cropping systems (no shading/sole cropping and shading/intercropping) and two row orientations (northsouth and east-west). At the top of bean canopies shaded by maize, incident radiation was reduced by up to 90 %. Shading reduced total dry matter of beans by 67 % at the end of the growing season, resulting in yield losses. The dry matter partitioning into leaf and stem (the ratios of leaf and stem to total biomass) was about 50 % higher in intercropping than sole cropping. In contrast, intercropped beans had 40 % lower dry matter partitioning into pod (the ratio of pod to total biomass). Fraction of radiation intercepted by sole-cropped beans steeply increased until canopy closure (0.9) and then slowly decreased, while fraction of radiation intercepted by intercropped beans remained constant between 0.0 and 0.2 throughout the growing seasons. However, intercropped beans had 77 % higher radiation use efficiency (RUE) than sole-cropped beans. In contrast, for maize, no effect of intercropping (shading) was found on growth, partitioning, yield, radiation interception or RUE. Consequently, lower bean yield losses can be attained in association with late shading rather than early shading. This can be controlled by growing crops with different temporal and spatial treatments. As regards row treatment, no effect of row direction was found on growth, partitioning, yield, radiation interception or RUE.

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Section: Radiation Interception and Usesupporting

confidence: 76%

Shade Effects on Phaseolus vulgaris L. Intercropped with Zea mays L. under Well‐Watered Conditions

Tsubo¹,

Walker²

2004

J Agronomy Crop Science

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“…Cool temperature (Table 1) was the main factor creating differences between seasons, so E appears to have been reduced by those low temperatures. Our E values of 0.42-0.71 g M J-1 compare favourably with other studies on C3 species, with values of 0.35-0.98 for Vigna (Muchow and Charles-Edwards 1982) and 0.67 for Phaseolus (Coulson 1985). C4 species such as Sorghum can have E of 1.2 (Muchow and Coates 1986).…”

Section: Leaf Areasupporting

confidence: 86%

A comparison of drip and furrow irrigated cotton on a cracking clay soil

Constable¹,

Rochester²,

Hodgson³

1990

Irrig Sci

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To determine if drip irrigation increases fertilizer requirements and/or the efficiency of utilization compared to furrow irrigation, growth and nitrogen uptake were measured in a four-year experiment comparing surface (SD) and buried (BD) methods of drip irrigation with furrow irrigation (F) of cotton. The soil was a slowlypermeable cracking grey clay (vertisol) at Narrabri, N.S.W. Drip-irrigated treatments were maintained at a deficit of 45 mm below the fully-irrigated soil water content, while F was irrigated when the deficit reached about 90 mm. Nitrogen (N) fertilizer was applied weekly with drip irrigation to BD and SD over the first half of the season, and as a conventional single application to F before sowing. Leaf area index (LAI), dry matter and N uptake were influenced more by season than by method of irrigation. LAI during boll filling averaged 2.4 and was 10% greater in BD than in SD and F. Final dry matter averaged 988 g m -2 and was 10% greater in BD and SD than in E The efficiency of conversion of solar radiation into dry matter averaged 0.55 g Mj-I; lint yield as a fraction of dry matter averaged 0.18; neither parameter was consistently influenced by the method of irrigation. Total N uptake ranged from 97 to 170 kg ha-1 and was influenced by irrigation method in one season only, when it was less in F than in SD and BD. N was often taken up later under drip irrigation than under F: there was up to 40% less N taken up by SD than F in the early flowering stage. The delay was associated with later application of N to BD and SD compared with F, and the application of N to the surface of alternate furrows of SD. Plant factors such as root ageing and competition between roots and bolls, were also implicated. We conclude that all of the N should be applied to drip-irrigated cotton on these soils by mid flowering, and that some of the N should be applied in the soil before sowing.

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“…The CE value during early crop growth until harvest (100 DAP) were indicated significantly different between crops Kelinci and Kancil with values of 1.52% and 1.41% ( Figure 3a). Various values have been reported for CE in crops ranging from 0.73% to 2% [9] [10]. Plant population that progressively high density (44.4 plant m -2 ) increased CE values (Figure 3b).…”

Section: Conversion Efficiency Of Radiation Energymentioning

confidence: 96%

Effect of Varieties and Plant Population Densities on Dry Matter Production, Radiation Interception and Radiation Energy Conversion in Peanut

Suprapto¹,

Sugito²,

Sitompul³

et al. 2012

JTLS

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The solar radiation is one of the major criteria to obtaining advantages on peanuts (Arachishypogaea L.). Although various combinations of crops have been reported, but variety association and plant population densities (PPD) during the periodically stage of growth on peanuts have yet to be analyzed. Dry matter production (DM), radiation energy interception, and radiation energy conversions were monitored over the growth period of two varieties of peanut. An experiment was conducted in Jambegede Research Farm, Indonesian Legume and Tuber Crops Research Institute, Malang, East Java, Indonesia, from July until October 2011. The experiment was arranged in a Split Plot Design with three replications. Peanut varieties, as the main plot consisted of two treatments : Kelinci and Kancil variety. In addition, five PPD variations as sub plot consisted of 8.1, 11.1, 16.0, 25.0 and 44.4 plant m -2 were arranged in a square spacing. The results showed that DM production from high PPD increased gradually to lower PPD in all varieties. Interception efficiency (IE) increased in all varieties from early sowing. A plant population density of 25.0 m -2 and 44.4 plants m -2 intercepted more radiation over 11.1 or 16.0 plants m -2 . Conversion efficiency of radiation energy (CE) to total dry matter production on Kelinci variety (1.52%) indicated a slight higher percentage than on Kancil variety (1.41%). Moreover, the CE and IE values indicated a decrease as the PPD increased on maximum DM.

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Radiant energy conversion in three cultivars of Phaseolus vulgaris

Cited by 16 publications

References 11 publications

Shade Effects on Phaseolus vulgaris L. Intercropped with Zea mays L. under Well‐Watered Conditions

Shade Effects on Phaseolus vulgaris L. Intercropped with Zea mays L. under Well‐Watered Conditions

A comparison of drip and furrow irrigated cotton on a cracking clay soil

Effect of Varieties and Plant Population Densities on Dry Matter Production, Radiation Interception and Radiation Energy Conversion in Peanut

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