Grains Research and Development

Date: 01.06.2002

FARM FOCUS CONSULTANTS: lupin row spacing trial data

Pictured at the WA No- Tillage Farmers Association Conference were (L to R): GRDC Western Regional Panel member Andrew Lee of Dumleyung, Carol Fowler of'Sunnydell', Trayning, and Angie Roe, consultant with Farm Focus, Northam.

"The reason we feel that the wider rows are tending to result in better, or more consistent yields, is due to improved light penetration into the canopy, which results in pods being able to fill the seeds being formed."

2000-2001 harvest results

Weigh trailer results from a number of clients' properties over the past two seasons (to assess the difference between standard and wide row spacings) have demonstrated a consistent advantage in favour of wide settings.

Even where the difference has not been significant, the trend has always been towards higher yields at wider row spacings. As a result, we feel that there does not seem to be any disadvantage in sowing on wider spacings (in fact, there is usually an advantage), therefore wider row spacings are a better, and safer, option for lupins. The results are as follows:

Site 1. MyalliePBR logo lupins at Waddi Forest
Myallie PBR logo PBR logolupins at Waddi Forest
9 inch (23 cm)0.644 t/ha
18 inch (46 cm)0.869 t/ha
Difference0.225 t/ha or $50.46/ha

Site 1.Myallie lupins at Waddi Forset

Site 2. MyalliePBR logo lupins at Waddi Forest
Myallie PBR logo PBR logolupins at Waddi Forest
9 inch 0.565 t/ha
18 inch 0.839 t/ha
Difference0.274 t/ha or $61.45/ha
Site 3. TanjilPBR logo lupins at Three Springs
Tanjil PBR logo PBR logolupins at Three Springs
10 inch 1.33 t/ha
20 inch 1.573 t/ha
Difference0.243 t/ha or $54.50/ha
Site 4. TanjilPBR logo lupins at Three Springs
Tanjil PBR logo PBR logolupins at Three Springs
10 inch 1.626 t/ha
20 inch 1.71 t/ha
Difference0.084 t/ha or $18.84/ha

Notes: Site 3 was on a gritty white sand, while Site 4 was on a good yellow sandy soil type (both on the same farm). The header driver made the comment that the wider rows were easier to harvest. It was not possible to see where the two blocks started and finished before harvest, indicating very little physical difference was seen at full maturity. The crop was close to waist height at harvest.

2001-2002 harvest results

Site 1. TanjilPBR logo lupins at Kellerberrin
Tanjil PBR logo PBR logolupins at Kellerberrin
9 inch 1.237 t/ha
18 inch 1.419 t/ha
Difference0.182 t/ha or $40.82/ha

Notes: The soil type was a sandy duplex type. The individual plants showed little physical difference, though it was possible to distinguish the row spacings, as the crop was quite short. The primarypod height on the wider rows could have been marginally higher. Observations by the grower during the season indicated slightly fewer plants per square metre on the wide rows, but significantly more pods per square metre. Seed size was good.

Site 2. TanjilPBR logo lupins at Kellerberrin
Tanjil PBR logo PBR logolupins at Kellerberrin
7 inch 1.164 t/ha
14 inch 1.192 t/ha
Difference0.028 t/ha or $6.28/ha

Notes: Sandy duplex soil type. Observations by the grower during the season indicated slightly fewer plants and slightly fewer pods per square metre on the wide rows. Seed size was good. The individual plants showed some physical difference, with the primary pod height on the wider rows considerably higher, and therefore easier to harvest.

Site 3. TanjilPBR logo lupins at Kellerberrin
Tanjil PBR logo PBR logolupins at Kellerberrin
10 inch(solid) 0.613 t/ha
20 inch (skip) 0.789 t/ha
30 inch (double-skip)0.612 t/ha
Difference between 10 inch and 20 inch =0.176 t/ha or $39.47/ha

Almost no difference between 10 inch and 30 inch

Site 3.Tanjil lupins at kellerberrin

Notes: Sandy duplex soil type. Observations by the grower during the season indicated slightly fewer plants and slightly fewer pods per square metre on the wider rows. There was very little physical difference, with the primary pod height on the wider rows being very similar to the standard row spacing. However, there were considerably more pods per square metre on the 20-inch row spacing compared to either the standard or double-skip row spacing, which had very similar results.

Site 4. TanjilPBR logo lupins at Three Springs
Tanjil PBR logo PBR logolupins at Three Springs
10 inch 2.376 t/ha
20 inch 2.535 t/ha
Difference0.159 t/ha or $35.66/ha

Site 4.Tanjil lupins at Three Springs

Notes: Good yellow sand soil type. It was not possible to see where the two blocks started and finished before harvest, indicating very little physical difference was seen at full maturity. The crop was close to waist height at harvest.

Values per hectare are calculated on the basis of $224.26 per tonne port equivalent, as quoted by the Grain Pool and Pro Farmer from 22/12/2001 - 19/01/2002.

Contact: Geoff Fosbery or Angie Roe 08 9622 5095 * Presented at the WANTFA 2002 conference