Yield and environmental benefits of ameliorating subsoil constraints under variable rainfall in a Mediterranean environment

Wong, M. T. F.; Asseng, Senthold

doi:10.1007/s11104-007-9316-3

Cited by 40 publications

(26 citation statements)

References 32 publications

(56 reference statements)

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“…In the alley cropping system, the crop recovers about 20 % of N directly from residues, as confirmed by Buresh & Tian (1998); secondly, major N uptake efficiency depends on the conditions of rootability. It has been shown that the greater availability of N could compensate one higher levels of soil compaction, which indicates that these factors are closely related (Wong & Asseng, 2007). In our experiment, higher percentages of water saturation were observed in legume-treated areas.…”

Section: Agronomic Benefitssupporting

confidence: 63%

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Aguiar

Amorim

Coelho

et al. 2009

Rev. Bras. Ciênc. Solo

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SUMMARYA sustainable management of soils with low natural fertility on family farms in the humid tropics is a great challenge and overcoming it would be an enormous benefit for the environment and the farmers. The objective of this study was to assess the environmental and agronomic benefits of alley cropping, based on the evaluation of C sequestration, soil quality indicators, and corn yields. Combinations of four legumes were used in alley cropping systems in the following treatments: Clitoria fairchildiana + Cajanus cajan; Acacia mangium + Cajanus cajan; Leucaena leucocephala + Cajanus cajan; Clitoria fairchildiana + Leucaena leucocephala; Leucaena leucocephala + Acacia mangium and a control. Corn was used as a cash crop. The C content was determined in the different compartments of soil organic matter, CEC, available P, base saturation, percentage of water saturation, the period of the root hospitality factor below the critical level and corn yield. It was concluded that alley cropping could substitute the slash and burn system in the humid tropics. The main environmental benefit of alley cropping is the maintenance of a dynamic equilibrium between C input and output that could sustain up to 10 Mg ha -1 of C in the litter layer, decreasing atmospheric CO 2 levels. Alley cropping is also beneficial from the agricultural point of view, because it increases base saturation and decreases physical resistance to root penetration in the soil layer 0 -10 cm, which ensures the increase and sustainability of corn yield.Index terms: corn, alley cropping, litterfall, rootability.(

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Section: Agronomic Benefitssupporting

confidence: 63%

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Aguiar

Amorim

Coelho

et al. 2009

Rev. Bras. Ciênc. Solo

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“…Our results show that the stability of grain yield is most likely due to an increase in subsoil root number density, although the rooting depth was nearly the same in the three soil types. Similarly, Wong and Asseng (2007) showed that, in a Mediterranean environment, yield depended strongly on accessible soil water, which was governed by rooting depth. Thus, under drought conditions, a deeper root system may maintain a larger stomatal aperture than a shallower root system for regulating CO 2 uptake and evaporation.…”

Section: Discussionmentioning

confidence: 96%

“…Naturally, the relationship between grain yield and water capture should be investigated under various root systems and precipitation levels. Previous studies indicated that actual rooting depth was highly correlated with maximum depth of soil-water extraction (Entz et al, 1992), and increasing rooting depth increased wheat grain yield in a Mediterranean environment (Wong and Asseng, 2007). Under waterdeficit conditions, water uptake from deeper layers increased, although evapotranspiration declined (Asseng et al, 1998).…”

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confidence: 96%

Effects of Soil Type, Vertical Root Distribution and Precipitation on Grain Yield of Winter Wheat

Itoh

Hayashi

Nakajima³

et al. 2009

Plant Production Science

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“…Previously used-and-relinquished fields are available for reuse in the future. Farming returns are calculated per-plot by the average of three regression formulas, each calculated from empirical data about the effect of soil depth, soil fertility, and rainfall on wheat and barley yields in Mediterranean climate regimes, and calibrated to typical yields of ancient wheat and barley varieties [39][40][41][42][43][44][45][46][47][48].…”

Section: Human Land-use Modelmentioning

confidence: 99%

How to Make a Barranco: Modeling Erosion and Land-Use in Mediterranean Landscapes

Barton

Ullah

Heimsath

2015

Land

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Abstract:We use the hybrid modeling laboratory of the Mediterranean Landscape Dynamics (MedLanD) Project to simulate barranco incision in eastern Spain under different scenarios of natural and human environmental change. We carry out a series of modeling experiments set in the Rio Penaguila valley of northern Alicante Province. The MedLanD Modeling Laboratory (MML) is able to realistically simulate gullying and incision in a multi-dimensional, spatially explicit virtual landscape. We first compare erosion modeled in wooded and denuded landscapes in the absence of human land-use. We then introduce simulated small-holder (e.g., prehistoric Neolithic) farmer/herders in six experiments, by varying community size (small, medium, large) and land management strategy (satisficing and maximizing). We compare the amount and location of erosion under natural and anthropogenic conditions. Natural (e.g., climatically induced) land-cover change produces a distinctly different signature of landscape evolution than does land-cover change produced by agropastoral land-use. Human land-use induces increased coupling between hillslopes and channels, resulting in increased downstream incision. OPEN ACCESSLand 2015, 4 579

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Yield and environmental benefits of ameliorating subsoil constraints under variable rainfall in a Mediterranean environment

Cited by 40 publications

References 32 publications

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Effects of Soil Type, Vertical Root Distribution and Precipitation on Grain Yield of Winter Wheat

How to Make a Barranco: Modeling Erosion and Land-Use in Mediterranean Landscapes

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