Abstract
Few studies have investigated the optimum plant population for maize silage in the South Island. Most planting recommendations come from studies in the warmer North Island. Growers in the South Island face a different environment and use shorter season hybrids. For these reasons it is likely that optimum plant populations may be higher in Canterbury. This research examined the effect of plant population (65,000 plants ha -1 to 190,000 plants ha -1 ) on maize silage dry matter yield, quality (grain yield) and economic value in a trial on a mid-Canterbury farm. Increasing the population increased DM yield, but there was no clear yield plateau. Plant population had no effect on grain yield. The change in dry matter content during maturation and therefore the projected harvest dates were not affected by plant population. An economic assessment showed there was increased profitability at plant populations as high as 150,000 or 170,000 plants ha -1 . This is well beyond currently recommended plant populations.
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Claims 5
Claim · model-written summary
Increasing maize population increased silage dry matter yield with no clear plateau.
- Treatment
- Increasing the populatione0
- Outcome
- DM yielde0
- Direction
- increasede0
- Qualifier
- no clear yield plateaue0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the population increased DM yield, but there was no clear yield plateau”
t0“maize silage in Canterbury”
Claim · model-written summary
Maize plant population had no effect on grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant population had no effect on grain yield”
t0“maize silage in Canterbury”
Claim · model-written summary
Maize plant population did not affect dry matter content change during maturation.
- Treatment
- plant populatione0
- Outcome
- change in dry matter content during maturatione0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The change in dry matter content during maturation and therefore the projected harvest dates were not affected by plant population”
t0“maize silage in Canterbury”
Claim · model-written summary
Maize plant population did not affect projected harvest dates.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The change in dry matter content during maturation and therefore the projected harvest dates were not affected by plant population”
t0“maize silage in Canterbury”
Claim · model-written summary
Maize plant populations as high as 150,000 or 170,000 plants per hectare increased profitability.
- Treatment
- plant populationse0
- Outcome
- profitabilitye0
- Direction
- increasede0
- Value
- 150,000 or 170,000 plants ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was increased profitability at plant populations as high as 150,000 or 170,000 plants ha -1”
t0“maize silage in Canterbury”
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