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Proxydetection of the impact distance of trees on crops: An indicator of the Land Equivalent Ratio?
Agriculture, Ecosystems and EnvironmentHighlights: • Crops yield and leftovers were scaled up to the field-scale. • Using spectral images throughout the crop cycle improves productivity predictions. • The distance of influence of trees on crops can be measured by proxydetection and reveals the Land Equivalent Ratio.Abstract: Faidherbia albida is known to affect the yield of various crops ...
Josiane Seghieri +2 more
exaly +4 more sources
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Mathematical Biosciences, 2007
In this paper, the yield and the land equivalent ratio (LER) of a silvo-arable agroforestry (SAF) system, containing one tree and one crop species, is analyzed analytically using a minimal mechanistic model describing the system dynamics. Light competition between tree and crop is considered using light extinction functions.
Karel J Keesman +2 more
exaly +4 more sources
In this paper, the yield and the land equivalent ratio (LER) of a silvo-arable agroforestry (SAF) system, containing one tree and one crop species, is analyzed analytically using a minimal mechanistic model describing the system dynamics. Light competition between tree and crop is considered using light extinction functions.
Karel J Keesman +2 more
exaly +4 more sources
Oil Palm Agroforestry Can Achieve Economic and Environmental Gains as Indicated by Multifunctional Land Equivalent Ratios [PDF]
Frontiers in Sustainable Food Systems, 2020 Driven by increased global demand for vegetable oil in the food and biofuel sectors, oil palm plantations based on monoculture technology have expanded into lowland tropical forests. Interest in diversified, mixed oil palm systems is increasing as these might increase efficiency of the use of land and other resources, reduce farmer risk, and decrease ...
Meine Van Noordwijk +2 more
exaly +5 more sources
Staple Land Equivalent Ratio for Assessing Yield Advantage from Intercropping
Experimental Agriculture, 1984SUMMARYThe Land Equivalent Ratio (LER) has been generally accepted as an agronomically sound index for assessing yield advantages derived from an intercropping practice. However, LER takes no account of the fact that, in subsistance agriculture, it is usually important to maintain a certain minimum percentage of the pure stand yield of the staple crop ...
M. Narayana Reddy +1 more
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Field Crops Research, 2015
Abstract Sustainable intensification of agriculture is needed to meet higher future food demands while mitigating agriculture’s ecological footprint. Intercropping is a strategy for increasing agricultural productivity per unit land that is based on ecological mechanisms for improved resource capture.
Tjeerd-Jan Stomph +2 more
exaly +5 more sources
Abstract Sustainable intensification of agriculture is needed to meet higher future food demands while mitigating agriculture’s ecological footprint. Intercropping is a strategy for increasing agricultural productivity per unit land that is based on ecological mechanisms for improved resource capture.
Tjeerd-Jan Stomph +2 more
exaly +5 more sources
Estimation of land equivalent ratios
Journal of Applied Statistics, 1989The estimation of the land equivalent ratios is proposed to be done by the (sum of) ratios of means of intercrop yield to sole crop yield. The bias and standard error of the estimates are obtained for large samples. Comparisons of the cropping systems have been made on the basis of these estimates and illustrated with field data.
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Field Crops Research, 1985
Abstract Two experiments were each conducted for 2 years at Ibadan, Nigeria, to determine optimum component populations for intercropped maize ( Zea mays ) and cowpeas ( Vigna unguiculata ). Component populations of maize and cowpeas were varied independently.
N.M. Tariah, T.A.T. Wahua
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Abstract Two experiments were each conducted for 2 years at Ibadan, Nigeria, to determine optimum component populations for intercropped maize ( Zea mays ) and cowpeas ( Vigna unguiculata ). Component populations of maize and cowpeas were varied independently.
N.M. Tariah, T.A.T. Wahua
openaire +1 more source