Researcher(s) | N/A |
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Year(s) | 2019 - 2020 |
Contributor | Queensland Department of Agriculture and Fisheries |
Trial location(s) |
Hopeland, QLD
|
To explore:
1. Mungbean responded to nitrogen fertiliser with a yield of +2 t/ha when planted on a low starting soil nitrogen profile (~ 50 kg N/ha).
2. One irrigation at pod-fill increased yields by up to 850 kg/ha.
3. Applying irrigation during high temperatures reduced canopy temperature, which is believed to also improve pod filling and reduce flower abortion. 4. Mungbean can increase levels of charcoal rot.
A field experiment was conducted at Hopeland, near Chinchilla. The site was selected for its low soil mineral nitrogen at the time of preliminary sampling (50 kg N/ha, 0-90 cm, 19/07/2019), and the ability to flood irrigate. Both a spring and summer planted trial were planted in the same field, this report outlines details of the summer planted trial. Deep phosphorus (P) was applied across the whole site on 2 September 2019 to rectify a potential P deficiency. The P was applied as MAP at a rate of 100 kg/ha, 20-25 cm depth and 50 cm spacing. A cover crop of Panorama millet was planted on 11 October 2019 to draw down the nitrogen status of the soil. The cover crop was desiccated on 23 December 2019 and slashed on 8 January 2020. Nitrogen was applied the same day by banding the fertiliser 10 cm offset from the plant row (Table 1). All treatments were replicated four times and repeated with and without irrigation to alter yield potential. The soil N status at planting was 52 kg N/ha for the irrigated trial REGIONAL AGRONOMY (RESEARCH) | 7 and 91 kg N/ha for the dryland site (control plots only), even though these were side by side in the same paddock. When comparing the summer and spring crop planting N, the cover crop was effective at maintaining the low N status of the summer trial, effectively buffering against mineralisation increasing available N from October to January. Jade-AUP mungbean was planted on 29 January 2020 with 50 cm row spacings with 40 L/ha of Flowphos 13Z. All treatments (except Treatment 1) had inoculant applied at planting through water injection. Micro-plots were planted with non-nodulating soybeans in each plot, as reference plants for the natural abundance method (15N isotope) to measure the proportion of N in the plants that was fixed from the atmosphere (%Ndfa) by the mungbean plants under each treatment.
Lead research organisation |
Queensland Department of Agriculture and Fisheries |
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Host research organisation | N/A |
Trial funding source | GRDC DAQ1806-003RTX |
Related program | N/A |
Acknowledgments |
The research undertaken as part of this project is made possible by the contributions of growers through both trial host farmers and the support of the Gains Research Development Corporation, Department of Agriculture and Fisheries and New South Wales Department of Primary Industries (DAQ1806-003RTX). |
Other trial partners | Not specified |
Crop type | Grain Legume: Mung beans |
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Treatment type(s) |
|
Trial type | Experimental |
Trial design | Replicated |
Sow date | Varied. Please see trial report |
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Harvest date | Varied. Please see trial report |
Plot size | Not specified |
Plot replication | 4 |
Psuedoreplication | Not specified |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Psuedoreplication | Not specified |
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.