A comparison of the light interception and water use of plant and first ratoon sugar cane intercropped with maize

Wallace, Jim; Batchelor, Charles; Dabeesing, D.N.; Teeluck, M.; Soopramanien, G.C.

doi:10.1016/0168-1923(91)90080-a

Cited by 30 publications

(9 citation statements)

References 8 publications

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“…Denmead (1973) proposed that the ratio E/ET should decrease monotonically as LAI increased. Villalobos and Fereres (1990), Wallace et al (1991), and Shen and Liu (1997) confirmed this relationship by measuring E, ET, and LAI under corn, sunflower, sugarcane, and winter wheat canopies. Wang et al (2001) also confirmed it using the simulation model WAVES.…”

Section: Soil Evaporation Under Crop Canopy and Crop Leaf Area Indexmentioning

confidence: 52%

Soil Evaporation and its Affecting Factors under Crop Canopy

Wang

2007

Comm. in Soil Sc. & Plant Analysis

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Based on field experiments, changing patterns and affecting factors of soil evaporation and energy balance under crop canopy were studied. Soil evaporation under crop canopy was measured directly using the microlysimetry technique. The main factors affecting soil evaporation under crop canopy including surface net radiation, leaf area index, soil water content, and crop growth period were analyzed to give scientific proof for the soil evaporation control. The results showed that no soil evaporation occurred under the crop canopy when net radiation was reduced to a threshold of 230.57 w/m 2 . Under crop cover conditions, evaporation/evapotranspiration (E/ET) reduced with increases of crop leaf area index, followed by an exponential function to a leaf area index (LAI) threshold of 4. The cumulative evapotranspiration, transpiration, and evaporation under crop canopy conditions during the winter wheat growing season were 443.9 mm, 272.2 mm, and 171.7 mm, respectively, with E/ET having a relatively high value of 38.7%.

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Section: Soil Evaporation Under Crop Canopy and Crop Leaf Area Indexmentioning

confidence: 52%

Soil Evaporation and its Affecting Factors under Crop Canopy

Wang

2007

Comm. in Soil Sc. & Plant Analysis

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“…A widely-used approach in agronomy is big leaf representation based on an energy balance where the plant stand is assimilated to an area of thermodynamic exchange with its surrounding environment. That approach, which is very robust for describing biomass growth in pure crops (Monteith, 1977;Gosse et al, 1986), has also been used on sparse crops and to some extent on multispecies systems, by cutting the plant cover into horizontal sections to take into account the vertical heterogeneity of the stand (Wallace et al, 1991). Whilst it has given some interesting results, particularly for characterising competition for light and its impact on biomass (Wallace et al, 1991;Keating and Carberry, 1993;Cruz and Sinoquet, 1994), a functional approach to the plant stand becomes necessary to account for competition and facilitation processes in the canopy (see below).…”

Section: The Framework Provided By Agronomistsmentioning

confidence: 99%

Mixing plant species in cropping systems: concepts, tools and models. A review

Malézieux

Crozat

Dupraz

et al. 2009

Agron. Sustain. Dev.

616

367

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-The evolution of natural ecosystems is controled by a high level of biodiversity, In sharp contrast, intensive agricultural systems involve monocultures associated with high input of chemical fertilisers and pesticides. Intensive agricultural systems have clearly negative impacts on soil and water quality and on biodiversity conservation. Alternatively, cropping systems based on carefully designed species mixtures reveal many potential advantages under various conditions, both in temperate and tropical agriculture. This article reviews those potential advantages by addressing the reasons for mixing plant species; the concepts and tools required for understanding and designing cropping systems with mixed species; and the ways of simulating multispecies cropping systems with models. Multispecies systems are diverse and may include annual and perennial crops on a gradient of complexity from 2 to n species. A literature survey shows potential advantages such as (1) higher overall productivity, (2) better control of pests and diseases, (3) enhanced ecological services and (4) greater economic profitability. Agronomic and ecological conceptual frameworks are examined for a clearer understanding of cropping systems, including the concepts of competition and facilitation, above-and belowground interactions and the types of biological interactions between species that enable better pest management in the system. After a review of existing models, future directions in modelling plant mixtures are proposed. We conclude on the need to enhance agricultural research on these multispecies systems, combining both agronomic and ecological concepts and tools. species mixture / plant mixture / cropping system / agroforestry system / agrobiodiversity / resource sharing / crop model / competition / facilitation

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“…In tropics, agricultural crops which do not cover the ground for sometime or all the season direct soil evaporation can be signifi cant component in the semiarid region of Middle East and West Africa. Soil evaporation can be up to 30-60 % of rainfall (Cooper et al 1983 ;Wallace et al 1991 ).…”

Section: Soil Water and Drainagementioning

confidence: 99%

“…Direct soil evaporation can account for 30-60 % of the annual rainfall (Cooper et al 1983 ;Wallace et al 1991 ) in the Middle East and West Africa. In India the best cropping system only uses 40 % of the annual rainfall while the rest is lost as runoff (26 %) and deep percolation (33 %) .…”

Section: Direct Effectsmentioning

confidence: 99%

Problems of Horticulture in Semiarid rain fed areas

Hiwale¹

2015

Sustainable Horticulture in Semiarid Dry Lands

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India has 56 % of the semiarid tropics population on 10 % of the semiarid tropics area. The major soils of semiarid tropics are vertisol which possess the best potential for increasing crop yield severalfold. The semiarid tropic is one of the poorest economic regions. There is increasing pressure on the land with the risk of soil degradation under existing practices. There is a high risk of soil loss with the use of traditional systems. The climate of semiarid region is marked by aridity index (0.2 P/ETP 0.50). FAO has based their classifi cation on the growing period and indicated that the growing period of 96 days which is within the 75-119-day range is classifi ed as semiarid. The rainfall is signifi cantly less than the potential evapotranspiration throughout the year. Successful crop production depends on stored soil water in addition to rainfall. The area is marked by low and erratic rainfall, low soil organic matter, erosion, low inherent fertility, and frequent droughts which limit the scope for high horticultural productivity.

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A comparison of the light interception and water use of plant and first ratoon sugar cane intercropped with maize

Cited by 30 publications

References 8 publications

Soil Evaporation and its Affecting Factors under Crop Canopy

Soil Evaporation and its Affecting Factors under Crop Canopy

Mixing plant species in cropping systems: concepts, tools and models. A review

Problems of Horticulture in Semiarid rain fed areas

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