Abstract
Cold, heat and soil water deficit, are major abiotic stresses that cause spatial and temporal variation in chickpea yield. Yield losses depend on the stress intensity in relation to the crop’s phenological development. Adjustment of sowing time has been anecdotally used to manipulate flowering time, the most sensitive stage of the crop. However, this approach has limitations since flowering also interacts with soil water and within-season rainfall. In this study, the APSIM-Chickpea model was validated using field experiments. We demonstrate how accounting for improved predictions in flowering time can be used to minimise yield losses. Simulated chickpea crops were “sown” at 10-day intervals from 1-March to 29-July over a 71-year period. Thresholds of cold temperature, seasonal water supply, and extremes of temperature were then examined with respect to chickpea yields. We identified optimal sowing windows that will minimise overlap between flowering, extreme temperatures, and terminal soil water stress, leading to potential improved yields.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 20th Australian Agronomy Conference |
| Publisher | Australian Society of Agronomy |
| Pages | 1-4 |
| Number of pages | 4 |
| Publication status | Published - 2022 |
| Event | 20th Australian Agronomy Conference - Empire Theatre, Toowoomba, Australia Duration: 18 Sept 2022 → 22 Sept 2022 https://agronomyconference.com/ https://www.agronomyaustraliaproceedings.org/index.php/2022 (Proceedings) https://az659834.vo.msecnd.net/eventsairseasiaprod/production-expertevents-public/8313fc094e3043ceadc259e62364da10 (Program) |
Conference
| Conference | 20th Australian Agronomy Conference |
|---|---|
| Abbreviated title | System solutions for complex problems |
| Country/Territory | Australia |
| City | Toowoomba |
| Period | 18/09/22 → 22/09/22 |
| Other | The theme of the conference is System Solutions for Complex Problems. The theme underpins the need to strengthen collaborations between practitioners and researchers from a wide range of disciplinary backgrounds to address increasingly complex problems and uncertainties. So, the question is not If, but when and how, multidisciplinary collaborations will be developed. The 20th Australian Agronomy Conference will feature leading international and national speakers addressing issues such as the need to foster soil biology for enduring profitability, carbon sequestration, herbicide resistance, and the interwoven relationships between food production, energy and the environment. We will discuss and share our latest research findings amongst circa 300 agronomists from Australia and the world, as well as farmers, consultants, agribusinesses and farmer peak bodies. |
| Internet address |