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Bill Manning (North West Local land Services), Andrew Verrell (NSW DPI) and Tim Weaver (CSIRO)
|Contributor||Department of Primary Industries NSW|
Site 15, Spring Ridge, NSW
|Further information||View external link|
To study the effect of nitrogen (N) and phosphorus (P) application separately and in combination on the growth and yield of faba bean.
This experiment aimed to study the effect of nitrogen (N) and phosphorus (P) application separately and in combination on the growth and yield of faba bean. A small amount of N at sowing might improve yield through faster establishment and groundcover. There is also little local data available on faba bean response to additional P.
In this experiment, additional P did not increase yield, however, on a lower P site, a positive response to P might occur. The reduction in yield caused by adding N might be due to reduced nodulation in N-treated plots, although nodulation was not measured in this trial. The greater yield and seed size of PBA NasmaA compared with PBA WardaA supports other experimental data.
|Lead research organisation||
Department of Primary Industries NSW
|Host research organisation||
Faculty of Agriculture and Environment - The University of Sydney
|Trial funding source||GRDC UA00127 and DAN00176|
|Trial funding source||DPI NSW UA00127 and DAN00176|
This research was part of the project Northern pulse agronomy initiative – NSW (DAN00171) with joint investment by NSW DPI and GRDC. Thanks to Michael Nowland, Gerard Lonegran, Peter Perfrement and Matt Grinter, NSW DPI staff, for technical assistance.
|Other trial partners||Not specified|
|Sow rate or Target density||19 plants/m2|
|Sow date||27 April 2016 27 April 2016|
|Harvest date||21 November 2016 21 November 2016|
|Plot size||Not specified|
|Plot blocking||Split plot design with fungicide as the main plot and varieties as subplots; three replications.|
|Plot randomisation||Split plot design with fungicide as the main plot and varieties as subplots; three replications.|
Fertiliser treatments were applied immediately pre-sowing and seed was sown offset from fertiliser rows by 5 cm.
0, 5, 10 and 20 kg P/ha applied as triple superphosphate
0 and 10 kg N/ha applied as urea
Post-sowing/pre-emergent Terbyne® 1 kg/ha (terbuthylazine 750 g/kg)
Post-sowing/pre-emergence: Terbyne® 1 kg/ha (terbuthylazine 750 g/kg) applied on 5 May Post-emergence: clethodim 500 mL/ha (clethodim 240 mL/L) applied
Insect pressure was low and no insecticides were used.
Targeting rust (Uromyces vicia-fabae), and chocolate spot (Botrytis fabae and B.cinerea):
• Dithane™ @ 2 kg/ha (mancozeb 750 g/kg) applied on 4 July
• Dithane™ @ 1 kg/ha (mancozeb 750 g/kg) applied on 15 July
• Unite® 720 @ 1.5 L/ha (chlorothalonil 720 g/L) applied on 2 August
• Spin flo® @ 500 mL/ha (carbendazim 500 g/L) applied on 2 September
|Rainfall avg ann (mm)||637.5mm|
|Rainfall avg gsr (mm)||367.6mm|
|Rainfall trial gsr (mm)||495mm|
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.