pruning · Yield · Lolium perenne (perennial ryegrass)

STUDIES ON THE ROOT DEVELOPMENT OF HERBAGE PLANTS · 1957

• positive
  Cutting increased roots per tiller.
• negative
  Cutting reduced roots and tillers per plant in field and greenhouse.

THE EFFECT OF DEFOLIATION ON THE SEED‐PRODUCING CAPACITY OF BRED VARIETIES OF GRASSES · 1965

• positive
  S24 seed yield after October cutting was higher than control in the second harvest year.

  compared with the control

• negative
  S24 seed yield after October cutting was lower than control in the first harvest year.

  compared with the control

• no effect
  Extra nitrogen with defoliation had no significant effect on seed head number or seed yield.
• no effect
  S24 mean seed yields after October or pre-ear-formation cutting were similar to control over two years.

  compared with the control treatment

Studies on the cutting management of grass-clover swards. IV. The effects of close and lax cutting on the yield of herbage from swards cut at different frequencies · 1966

• positive
  Cutting to 1 inch gave greater herbage dry matter yield than cutting to 2½ inches at all frequencies in both experiments.

  compared with 2½ in.

• positive
  Under time-based cutting, close cutting gave a relatively greater yield increase at two-week frequency than four- or six-week frequency.

  compared with lax cutting

cited by 1 paper here

THE EFFECTS OF CUTTING AND GRAZING SYSTEMS ON HERBAGE PRODUCTION FROM GRASS SWARDS · 1971

• positive
  Severe defoliation yielded more than lenient defoliation under cutting and grazing.

  compared with lenient

• positive
  Infrequent defoliation yielded more than frequent defoliation under cutting and grazing.

  compared with frequent

cited by 2 papers here

The effect of a wide range of fertilizer nitrogen application rates and defoliation intervals on the dry-matter production, seasonal response to nitrogen, persistence and aspects of chemical composition of perennial ryegrass (Lolium perennecv. S.24) · 1977

• positive
  The maximum dry matter yield occurred at a 75 day interval in two of three years.

  compared with 45-day defoliation system

cited by 2 papers here

PERENNIAL RYEGRASS CULTIVARS · 1978

• positive
  Ariki showed a greater yield response to longer intervals between defoliations than Ruanui.

  compared with Ruanui

• positive
  Nui showed a greater yield response to longer intervals between defoliations than Ruanui.

  compared with Ruanui

Effect of autumn cutting regime on developmental morphology and spring growth of perennial ryegrass · 1979

• positive
  Greater prior utilization, including cutting in March, encouraged production of new tillers in spring.
• no effect
  Total spring herbage yields from the different defoliation systems were very similar.

cited by 2 papers here

Response of grass swards to fertilizer N under cutting or grazing · 1979

• positive
  The yield response to fertilizer N was greater under cutting than under grazing.

  compared with grazing

cited by 1 paper here

The effect of defoliation upon yield, flowering and vegetative spread of Holcus lanatus growing with and without Lolium perenne · 1980

• positive
  Less frequent cutting increased L. perenne harvested yield in monoculture.
• no effect
  Cutting height did not affect L. perenne yield.

cites 1 paper here

The effect of time of initial defoliation and height of defoliation on the productivity of perennial ryegrass swards · 1980

• positive
  Early vegetative, stem elongation and flowering initial cuts yielded more than intermediate stage cuts.

  compared with an intermediate stage of growth

• positive
  An initial lax cut followed by close cuts yielded 4·8% more than consistent close cuts.

  compared with consistent close defoliation

• negative
  Initial cuts removing many apical meristems at low initial yield had the lowest annual yield.
• negative
  Consistent lax cuts reduced yield 14·5% relative to close cuts.

  compared with continual close defoliation

cites 2 papers here

Milk production from silage 2. The influence of the digestibility of silage made from the primary growth of perennial ryegrass · 1981

• positive
  Later cutting increased grass yield from 3·78 to 6·94t dry matter per ha.

  compared with 3·78

Studies on Dry Matter Yields , Chemical Composition and Net Energy Accumulation in Three Leading Temperate Grass Species I. Influence of meteorolgical factors on the dry matter productivity and net energy value under different cutting management · 1986

• positive
  Under 3 cuts, perennial ryegrass gave the highest net energy yield, 665.

The effect of height and frequency of mowing on the yield and composition of perennial ryegrass—white clover swards in the autumn to spring period · 1987

• positive
  Low cutting height increased early spring herbage dry matter yield.
• no effect
  Defoliation interval had no effect on dry matter yield.
• negative
  Low cutting height reduced mid-spring dry matter yields, especially with short defoliation intervals.
• no effect
  Cutting height had no effect on late spring dry matter yields.

cited by 1 paper here

Water use and water‐use efficiency of perennial ryegrass swards as affected by the height and frequency of cutting and seed rate · 1988

• positive
  Infrequent cutting increased yields in later years.

Effects of height and frequency of defoliation on the productivity of irrigated oats ( Avena strigosa cv. Saia) and perennial ryegrass ( Lolium perenne cv. Kangaroo Valley), grown alone or with barrel medic ( Medicago truncatula cv. Jemalong) · 1988

• positive
  In pure swards, defoliation every 6 weeks at 5 cm gave the highest ryegrass yield (12.6 t DM/ha).
• positive
  In mixtures, ryegrass DM yield was highest (3.6 t/ha) when cut every 3 weeks at 5 cm.
• no effect
  Cutting height did not change ryegrass tiller numbers.

cites 1 paper here

Defoliation Frequency and Intensity Effects on Pasture Forage Quality · 1990

• positive
  Digestible dry matter yield rose with longer defoliation intervals.

Effect of regrowth interval on the productivity of swards defoliated by cutting and grazing · 1991

• positive
  Sward productivity was higher under cutting than under grazing irrespective of defoliation interval.

  compared with grazing

• positive
  Swards defoliated at 4-week intervals gave higher mean annual herbage yield than those defoliated at 3-week intervals.

  compared with herbage defoliated

• no effect
  Defoliation interval had no effect on N yield of the ryegrass sward.

cites 3 papers herecited by 1 paper here

Management of Lolium perenne/Trifolium repens pastures in the subtropics. I. Effect of defoliation interval, seeding rate and application of N and lime · 1993

• positive
  Four-week defoliation increased dry matter yield by 18% in year 1 and 41% in year 2 versus two-week defoliation.

  compared with at 2 weeks

cites 1 paper herecited by 1 paper here

Effect of a spring application of nitrogen on the performance of perennial ryegrass-white clover swards at two sites in the Netherlands · 1997

• positive
  Higher cutting frequency raised nitrogen yield from 458 to 524 kg ha-1.

cited by 1 paper here

[Regrowth of different plant populations in mixed pasture]. · 2002

• positive
  Cutting increased total annual pasture dry matter yield.
• no effect
  Cutting frequency did not significantly affect herbage yields.

Selection for more persistent perennial ryegrass ( Lolium perenne ) cultivars for subtropical/warm temperate dairy regions of Australia · 2003

• positive
  Three-leaf defoliation yielded more than one-leaf defoliation.

  compared with 1 L

cites 1 paper here

Sward and tiller growth dynamics of Lolium perenne L. as affected by defoliation frequency during autumn · 2011

• positive
  Defoliation at 3.5 leaves increased herbage production and tillering and improved nutritional profile compared with 1.5 leaves.

  compared with plants cut at the 1.5-leaf stage

cites 2 papers here