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Yield advantage and water productivity of maize-mungbean inter-cropping systems in the Dry Zone of Sri Lanka; a modelling approach


Amarasingha, RK and Suriyagoda, LDB and Marambe, B and Galagedara, LW and Silva, GLLP and Punyawardena, R and Nidumolu, U and Howden, M and Parsons, D and Meinke, H, Yield advantage and water productivity of maize-mungbean inter-cropping systems in the Dry Zone of Sri Lanka; a modelling approach, Proceedings of the 17th Australian Society of Agronomy Conference, 20-24 September 2015, Hobart, Australia, pp. 1-4. (2015) [Refereed Conference Paper]

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Copyright 2015 Australian Society of Agronomy Inc.

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Water is not efficiently used in most of the cropping systems in South Asia. Therefore, water-efficient agricultural practices are of immense importance when increasing the area to be cultivated, and/or conserving rain water to be used in drier regions through irrigation. Inter-cropping of maize (Zea maize L.) with mungbean (Vigna radiate L.) R. Wilczek may offer benefits in utilising water efficiently and maintaining or improving land productivity. Simulation models are useful tools to assess the performance of agricultural systems. The present study was conducted to evaluate the irrigation water requirement and yield of the maize-mungbean inter-cropping system in comparison with mono-cropping, using APSIM. Simulation results revealed that the maize-mungbean intercrop required only 4 % more water than the maize mono-crop (P>0.05). Moreover, intercrop maize yield was only 3 % less than that of the maize mono-crop (P>0.05) However, yield of mungbean was 21 % less in the intercropping system than the mono-crop system (P<0.05). The land-equivalent ratio of the maize-mungbean intercropping system was 1.8. Efficient use of water under the inter-cropping system, with a similar yield of maize to that obtained under mono-crop of maize, combined with an additional mungbean harvest highlights the greater efficiency of the maize-mungbean inter-cropping system in the Dry Zone of Sri Lanka.

Item Details

Item Type:Refereed Conference Paper
Keywords:APSIM, evaluation, inter-cropping, maize, mungbean, Sri Lanka
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Agriculture, land and farm management
Research Field:Sustainable agricultural development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Grains and seeds
Objective Field:Maize
UTAS Author:Parsons, D (Dr David Parsons)
UTAS Author:Meinke, H (Professor Holger Meinke)
ID Code:107227
Year Published:2015
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2016-03-08
Last Modified:2017-11-02

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