Explanipedia

Effect of summer moisture deficit on growth of five white clover cultivars Open

X. Wang, J. R. Caradus, A.C.P. Chu · 1995

Biology

Growth of five New Zealand white clover cultivars, Grasslands Kopu, Grasslands Pitau, Grasslands Huia, Grasslands Tahora and Prop, was quantified at differing soil moistures in both the field and the glasshouse. The first trial employed a …

Effects of severity of grazing on tissue turnover in Matua prairie grass dairy pasture Open

JingXin Xia, John Hodgson, A.C.P. Chu · 1994

Biology

Four pairs of paddocks of prairie grass (Bromus willdenowii Kunth cv. Grasslands Matua) and white clover (Trifolium repens L. cv. Grasslands Pitau) were grazed by lactating cows 3 times in rotation between September 1988 and February 1989 …

Effect of genotype and seed size on early vegetative growth of sheep's burnet Open

G. B. Douglas, I. L. Gordon, A.C.P. Chu, A. G. Robertson · 1993

Biology

Emergence and early vegetative growth of sheep's burnet (Sanguisorba minor ssp. muricata) were investigated in a glasshouse in autumn. Lucerne (Medicago sativa cv. Rere) was included for comparison. One accession of sheep's burnet from the…

Autumn regrowth of established field-grown sheep's burnet Open

G. B. Douglas, A. G. Robertson, A.C.P. Chu · 1991

Biology Medicine

Weekly monitoring of the autumn regrowth of previously cut, established stands of the perennial herb sheep's burnet (Sanguisorba minor ssp. muricata) was conducted over 7 weeks. Stands were located at a dryland site in the lower North Isla…

Early summer pasture control: what suits the plant? Open

C. Matthew, A.C.P. Chu, John Hodgson, A. D. Mackay · 1991

Biology

Plugs of sheep-grazed, ryegrass-dominant pasture were transplanted to a glasshouse, in order to make detailed studies of tiller appearance from the base of flowering tillers in late spring-early summer. In 2 experiments, cutting treatments…

Establishment and growth of sheep's burnet in the lower North Island of New Zealand Open

G. B. Douglas, A. G. Robertson, A.C.P. Chu, I. L. Gordon · 1990

Biology

Spring establishment and herbage production of sheep's burnet (Sanguisorba minor ssp. muricata) were compared with birdsfoot trefoil (Lotus corniculatus) and lucerne (Medicago sativa) at Riverside in the lower North Island of New Zealand. …

Can we reverse the process of deterioration in a run down prairie grass pasture? Open

Mike Dodd, A.C.P. Chu, Priscilla Matthews · 1990

Environmental science Biology

An experiment was designed to determine whether aerating soil with a seed drill coulter, or improving soil fertility through nitrogen application, could reverse the deterioration of a 'Grasslands Matua' prairie grass pasture. A simple mode…

Tiller population and tissue turnover in a perennial ryegrass pasture under hard and lax spring and summer grazing Open

JingXin Xia, John Hodgson, C. Matthew, A.C.P. Chu · 1990

Biology Sociology

Plots of perennial ryegrass were grazed by sheep at 3 to 4-week intervals under hard (postgrazing herbage mass 1000 kg DM/ha) and lax (2000 kg DM/ha) management from October 1986 to August 1988. In early December 1987 treatments on half th…

Response of Matua prairie grass and Ellett perennial ryegrass to excess soil moisture in sand, silt and clay soils Open

W.J. Eccles, C. Matthew, A.C.P. Chu · 1990

Biology Environmental science

The response of 'Grasslands Mama' prairie grass to waterlogging on different soil types was determined and compared with that of Ellett perennial ryegrass in a glasshouse pot trial at Massey University. During the waterlogging, rate of lea…

SEARCHING FOR AN ALTERNATIVE WAY TO MANAGE PRAIRIE GRASS Open

Christopher Black, A.C.P. Chu · 1989

Biology Environmental science Engineering

The perlormance of 'Grasslands Matua' prairie grass was compared under lax and hard grazing by sheep. Pasture utilisation and tiller densities were measured to determme If l"cremng utllsatlon would result I" sward decline Lax grazmg permit…

STOLON FORMATION AND SIGNIFICANCE FOR SWARD TILLER DYNAMICS IN PERENNIAL RYEGRASS Open

C. Matthew, S.J. Quilter, C.J. Korte, A.C.P. Chu, A. D. Mackay · 1989

Biology

In a pot trial to investigate stolen formation in perennial ryegrass (Lolium perenne L.). 4 genotypes of ryegrass tested all formed stolons. After burial with approximately 30 mm soil in August, cutting and burial, or cutting alone, stolen…

GRAZING MANAGEMENT IN SPRING AND SUBSEQUENT DAIRY COW PERFORMANCE Open

C.J. Hoogendoorn, C. W. Holmes, A.C.P. Chu · 1988

Biology Engineering

Two levels of grazing intensity were unposed on pasture during a spring-time pre-treatment period in two years at Massey University's Dary Cattle Research Unit. The two grazing intensws were lax (L), 2000-2500 kg DMlha residual herbage mas…

THE INFLUENCE OF SPRING GRAZING MANAGEMENT ON PASTURE QUALITY Open

B.M. Butler, A.C.P. Chu · 1988

Biology

Six grazing treatments, consisting of an intensity comparison (hard, medium and lax) at a 14.day regrowth interval, and a frequency comparison (regrowth intervals of 7, 14, 21 and 26 days) at the medium intensity, were imposed over 12 week…

Depletion of soil water from a Tokomaru silt loam by a perennial ryegrass sward Open

D J Barker, A.C.P. Chu, C.J. Korte · 1985

Environmental science Geology Biology

An automatic rain-out shelter and an oscillating sprinkler irrigater were used to give contrasting dry and wet soil moisture regimes during summer in a ryegrass sward grown on a Tokomaru silt loam (Fragiaqualf). Measurements of volumetric …

SOME EFFECTS OF SPRING DEFOLIATION AND DROUGHT ON PERENNIAL RYEGRASS SWARDS Open

David Barker, A.C.P. Chu, C.J. Korte · 1985

Environmental science Biology Engineering

An automatic rain-out shelter and an oscillating sprinkler irrigator were used to give contrasting wet and dry soil moisture regimes during summer in ryegrass swards, which had been differentially mown (7.5 ems vs 2.5 ems) during spring to…

Limitations to production and choice of species in finishing pastures Open

Andrea Harris, A.C.P. Chu · 1985

Business Environmental science Biology

During the past 15 years many new pasture species and cultivars have been released and are now commercially available. However, with the exception of Nui and Ellett ryegrasses, only a few have received enthusiastic acceptance by farmers. A…

SOME EFFECTS OF DROUGHT ON PERENNIAL RYEGRASS SWARDS Open

C.J. Korte, A.C.P. Chu · 1983

Biology

Herbage production and tiller dynamics were measured in "Grasslands Nui" perennial ryegrass (Lolium perenne L.) swards for 3 months during summer, under conditions of either irrigation or water stress. Measurements continued through winter…

Pattern of Autumn tillering in a Grasslands 4708 tetraploid hybrid ryegrass sward following two heights of mowing. Open

C.J. Korte, J.G. Spall, A.C.P. Chu · 1982

Biology

Herbage mass,light interception,and ryegrass tiller dynamics were measured in a tetraploid hybrid ryegrass sward for 8 weeks after cutting to 1–2 cm and 5–6 cm during the late autumn. In both treatments the density of ryegrass tillers incr…

Effect of paraquat and nitrogen on a ryegrass—white clover pasture Open

M.P. Rolston, A.C.P. Chu · 1976

Chemistry Biology Philosophy

Three rates of nitrogen were applied as urea in solution with three rates of paraquat to a ryegrass-white clover sward. The loss in pasture production 67 days after spraying 280 g a. i. /ha of paraquat was equivalent to 3460 kg dry matter/…

Growth of a forage sorghum hybrid under two soil moisture regimes in the Manawatu Open

A.C.P. Chu, Russ Tillman · 1976

Biology

Growth and some growth characteristics of a forage sorghum hybrid (Sudax SX-6) in irrigated and unirrigated soil were studied in the field. Final dry weights 16 weeks after sowing were 36.8 g per plant with irrigation and 28.2 g per plant …

Effect of paraquat on the nitrogen-fixing activity of white clover Open

M.P. Rolston, A.C.P. Chu, I. R. P. Fillery · 1976

Chemistry Biology

The effect was studied of paraquat, at rates equivalent to 0, 70, and 280 g a.i./ha, on the nitrogen-fixing activity of white clover (Trifolium repens L. ‘Grasslands Huia’). Plants were grown in nutrient culture, and the nitrogen-fixing ac…

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