Journal of Food and Nutrition Research
ISSN (Print): 2333-1119 ISSN (Online): 2333-1240 Website: Editor-in-chief: Prabhat Kumar Mandal
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Journal of Food and Nutrition Research. 2021, 9(5), 251-257
DOI: 10.12691/jfnr-9-5-2
Open AccessArticle

Improvement of Intercropping Performance Assessment in a System with Difference of Crops’ Cycle Durations: Calculation Methods for Rice-cassava Association

Konan Kouassi Urbain1, , Koné Brahima1, Konan Kouamé Firmin2, Keli Zagbahi Jules3, Bouet Alphonse3 and Yao-Kouamé Albert1

1Felix Houphouet Boigny University, Earth Sciences Unit, Soil science department, 22 BP 582 Abidjan 22, Côte d’Ivoire

2Training and Research Unit in Agroforestry, Earth Sciences Department, Jean Lorougnon Guede (UJLoG) University, 02 BP 150 Daloa 02, Côte d’Ivoire

3National Center for Agronomic Research (CNRA), 01 BP 1740 Abidjan 01 Côte d’Ivoire

Pub. Date: May 10, 2021

Cite this paper:
Konan Kouassi Urbain, Koné Brahima, Konan Kouamé Firmin, Keli Zagbahi Jules, Bouet Alphonse and Yao-Kouamé Albert. Improvement of Intercropping Performance Assessment in a System with Difference of Crops’ Cycle Durations: Calculation Methods for Rice-cassava Association. Journal of Food and Nutrition Research. 2021; 9(5):251-257. doi: 10.12691/jfnr-9-5-2


Crop performance evaluation in intercropping involving booth crops with different cropping cycle durations is still a concern for agronomic research while farmers already adopted this agro-system in spite of yield decreasing of one of the component. Agronomic trial involving rice-cassava intercropping with different densities of cassava planting was undertaken in western Côte d'Ivoire to determine most reliable parameters for performance index calculation comparing the conventional to new proposed methods. In a Fisher design, number of root/plant, cassava yield, cassava yield/2 rice cycles, 1000 rice grain weight, and rice grain yield were collected for exploring their reliability on global yield determination. Area Time Equivalent Ratio (ATER) and Crop Performance Ratio Time corrected were calculated as conventional method of performance index assessment while, average yield of cassava for two cycle of rice (ATER1) and the mean for both cropping cycles of rice (ATER2) were proposed as new methods. Except the variation of yield in single cropping, no significant effect of cassava planting density was recorded in global production and ATER value overlapped the threshold value of 1 in some extend. Only calculated yield were reliable for global production pointing out ATER1 as the most consistent method for rice-cassava intercropping performance determination. Rice grain yield and half of cassava yield calculated on basis of two rice cropping cycle were revealed as the most reliable parameters for ATER calculation highlighting such method viability for intercropping performance assessment when involving two crops with different cycle durations.

global production crop cycle duration intercropping performance Area Time Equivalent Ratio

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