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Reliability of production of quick to medium maturity maize in areas of variable rainfall in north-east Australia

Citation

Birch, CJ and Stephen, K and McClean, G and Doherty, AG and Hammer, GL and Robertson, MJ, Reliability of production of quick to medium maturity maize in areas of variable rainfall in north-east Australia, Australian Journal of Experimental Agriculture, 48, (3) pp. 326-334. ISSN 0816-1089 (2008) [Refereed Article]

DOI: doi:10.1071/EA06104

Abstract

Maize may assume a more significant role in grain crop production systems in north-east Australia if the probability of producing low yields associated with given amounts of available water can be reduced. Growing hybrids with very early maturity provides a possible way to achieve this. Simulation studies of dryland maize production in areas of highly variable rainfall in north-east Australia were undertaken using long-term weather data input to the APSIM model configured for quick to medium maturity maize. The studies focussed on sowing time options, population density, cultivars, and water availability at sowing. Simulation outputs included predicted mean and median yield, measures of yield variability, and the probability of producing low to very low yield (<2 t/ha). The study showed that optimum sowing date varied with location, and that low populations gave more reliable production, despite some potential yield losses in favourable years. The results of the simulation study provide estimates of yield and thus economic viability of maize production that are interpreted in terms of seasonal variability. They indicate that maize is a viable dryland cropping option provided that cultivar, sowing time and starting water conditions are optimised. Non-optimal conditions of water supply at sowing should be avoided, as greater variability in yield and reduced viability are predicted. © CSIRO 2008.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Horticultural Production
Research Field:Horticultural Crop Growth and Development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Summer Grains and Oilseeds
Objective Field:Maize
Author:Birch, CJ (Associate Professor Colin Birch)
ID Code:63237
Year Published:2008
Web of Science® Times Cited:11
Deposited By:Agricultural Science
Deposited On:2010-04-23
Last Modified:2015-02-04
Downloads:0

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