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Relationships of frequencies of extreme low temperatures with grain yield of some Australian commercial chickpea cultivars

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Chauhan, Y. S., Allard, S., Krosch, S., Ryan, M. and Rachaputi, R. C. N. (2022) Relationships of frequencies of extreme low temperatures with grain yield of some Australian commercial chickpea cultivars. International Journal of Biometeorology . ISSN 1432-1254

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Article Link(s): https://doi.org/10.1007/s00484-022-02344-9

Abstract

In this study, we examined the relationships between extremes of low temperatures and chickpea yield in 12 field experiments conducted at six sites in the subtropical environment of southeast Queensland (SEQ) from 2014 to 2019. Three commercial chickpea cultivars, PBA-Boundary, PBA-HatTrick and PBA-Seamer, were grown in all the experiments. Cultivars PBA-Pistol, PBA-Monarch and Kyabra were also included in three of these experiments conducted in 2015. In these experiments, the crop experienced a total of 8 to 41 frosts (minimum temperature <  = 0 °C), 2 to 41 pre-flowering frosts, 2 to 19 frosts during the critical period, 0 to 13 frosts and 2 to 71 low-temperature days (< = 15 °C) after flowering. The mean yield, which varied from 1 to 3 t/ha, was negatively related to post-flowering frosts (r =  − 0.74, p < 0.01) and low-temperature days (r =  − 0.76, p < 0.01), and positively related to pre-flowering frosts (r = 0.67, p < 0.05). Each post-flowering frost was associated with a 5% decrease and a low-temperature day with a 1% decrease in yield. The cultivar × site interaction was significant only in the three experiments with six commercial cultivars. This interaction was most likely due to an increase in the sensitivity range with additional cultivars, as indicated by frost damage scores and their relationships with yield. The results imply that extreme low-temperature events after flowering could negatively impact chickpea yield in SEQ and similar subtropical environments. Overcoming these effects through management and breeding should increase and stabilise chickpea yield.

Item Type:Article
Keywords:Cicer arietinum L. Critical period Frost Flowering Low temperature Photothermal quotient Sensitive stage Yield loss
Subjects:Agriculture > Agriculture (General) > Agriculture and the environment
Agriculture > Agriculture (General) > Agricultural meteorology. Crops and climate
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture
Agriculture > By region or country > Australia
Deposited On:19 Sep 2022 04:44
Last Modified:19 Sep 2022 04:44

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