Results 271 to 280 of about 536,864 (303)
Some of the next articles are maybe not open access.
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
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
openaire +1 more source
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.
openaire +1 more source
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
openaire +1 more source
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
European Journal of Agronomy, 2020
Abstract Different planting pattern affects the leaf senescence of maize under intercropping systems, which regulate the grain yield of maize plants. In this study, we observed that a narrow-wide-row planting pattern in maize soybean relay intercropping system (MS) improved the leaf greenness and green leaf area, delayed the leaf senescence process ...
Lingyang Feng +14 more
openaire +1 more source
Abstract Different planting pattern affects the leaf senescence of maize under intercropping systems, which regulate the grain yield of maize plants. In this study, we observed that a narrow-wide-row planting pattern in maize soybean relay intercropping system (MS) improved the leaf greenness and green leaf area, delayed the leaf senescence process ...
Lingyang Feng +14 more
openaire +1 more source
Agricultural Research, 2015
In recent years, there has been increased interest in agricultural production systems in order to achieve high productivity and promote sustainability over time. Hence, an experiment was conducted in order to evaluate the effects of intercropping systems on total yield, land equivalent ratio, and weed control efficiency (WCE). Pure standing of chickpea
Javad Hamzei, Mohsen Seyedi
openaire +1 more source
In recent years, there has been increased interest in agricultural production systems in order to achieve high productivity and promote sustainability over time. Hence, an experiment was conducted in order to evaluate the effects of intercropping systems on total yield, land equivalent ratio, and weed control efficiency (WCE). Pure standing of chickpea
Javad Hamzei, Mohsen Seyedi
openaire +1 more source
Experimental Agriculture, 1986
SUMMARYThe productivity, land equivalent ratios (LERs) and light use efficiency of a pear and radish interculture system were assessed. Pear yield was unaffected by intercropping. Relative yields for the radish component varied between 0.5–1.01 depending upon the yield index and spatial arrangement employed. This gave LER values for the system of 1.5–2.
openaire +1 more source
SUMMARYThe productivity, land equivalent ratios (LERs) and light use efficiency of a pear and radish interculture system were assessed. Pear yield was unaffected by intercropping. Relative yields for the radish component varied between 0.5–1.01 depending upon the yield index and spatial arrangement employed. This gave LER values for the system of 1.5–2.
openaire +1 more source
Agronomy Journal, 2008
Increased crop production (overyielding) often observed in intercrops compared to sole crops has been attributed to enhanced resource use. The objective of this study was to investigate intercropping complementarity of wheat (Triticum aestivum L.), canola (Brassica napus L.), and field pea (Pisum arvense L.) for light and water use.
Anthony R. Szumigalski +1 more
openaire +1 more source
Increased crop production (overyielding) often observed in intercrops compared to sole crops has been attributed to enhanced resource use. The objective of this study was to investigate intercropping complementarity of wheat (Triticum aestivum L.), canola (Brassica napus L.), and field pea (Pisum arvense L.) for light and water use.
Anthony R. Szumigalski +1 more
openaire +1 more source