Phosphate sources for pasture production on summer‐dry soils in eastern New Zealand

Craighead, M. D.

doi:10.1080/00288233.2004.9513585

Cited by 3 publications

(2 citation statements)

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“…Downloaded by [117.244.28.168] at 12:58 07 October 2015 New Zealand Journal of Agricultural Research, 2007, Vol. 50 The phosphorus (P) and sulphur (S) requirements of seasonally dry pastures on Pallic and Brown Soils (hewitt 1992), and interaction with form of fertiliser, were examined by Craighead (2004). he concluded that superphosphate was generally the most efficient in stimulating pasture dry matter responses in spring, mainly because of the significant soluble P and S contents, but that there was regional and temporal variation in the relative performance of individual fertilisers which could not be explained by the climatic variability from site to site.…”

Section: Introductionmentioning

confidence: 99%

Pasture responses to phosphorus and nitrogen fertilisers on East Coast hill country: Total production from easy slopes

Gillingham¹,

Morton

Gray

2007

New Zealand Journal of Agricultural Research

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A series of small, mowed plots, excluded from grazing, were established on flat to easy sloping (up to 15°) pastures on farms from Wairoa (northern Hawke's Bay) to Moeraki (North Otago) with contrasting degrees of spring, summer and autumn dryness, to evaluate the pattern of pasture responses to a range of nitrogen (N) fertiliser rates, and associated soil phosphorus (P) levels. Mean annual rainfall ranged from 474 (Marlborough) to 1348 mm (Wairoa) with all farms having an associated range in spring/summer/autumn rainfall. In mid-late winter 2000, fertiliser P and N were applied at 0, 30, 60 or 90 kg ha -1 in a completely randomised design with incomplete replication. In winter 2001 and 2002 the rates of N fertiliser (urea) treatments were repeated. The application of P fertiliser (triple super) varied between treatments, sites and years in an attempt to generate and stabilise a range of soil P tests at each site. The rates of P applied in were based on the soil Olsen P test in the previous spring. The pasture response to N fertiliser differed between the early spring (August-October) and late spring-autumn seasons. The pasture response in early spring to N fertiliser ranged from 1.58 kg DM kgr 1 N in Marlborough to 17.9 kg DM kg -1 N fertiliser at Wairoa. Conversely, at almost all sites, there was a negative pasture response in late spring-autumn to increasing rate of N fertiliser. The net difference between the positive pasture responses to fertiliser N in early spring and the negative effects in late spring-autumn showed a positive net response over the total season. The overall average for all sites was 12.4 kg DM kg -1 N response at the 30 kg N ha -1 rate, and 7.6 kg DM kg -1 N fertiliser at the 90 kg N ha -1 rate. The relative pasture responses at most sites to increasing soil P status was similar in both the early spring, and in the late spring-autumn seasons. Asymptotic regression relationships (Mitscherlich type), derived for data from each of the Wairoa, Puketapu, Waipawa, Wallingford and Moeraki sites suggested that near peak responses were obtained at Olsen soil P test of 20.

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Section: Introductionmentioning

confidence: 99%

Pasture responses to phosphorus and nitrogen fertilisers on East Coast hill country: Total production from easy slopes

Gillingham¹,

Morton

Gray

2007

New Zealand Journal of Agricultural Research

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“…Exchangeable aluminium (Al) was 3.4 mg/kg (CaCl 2 extraction) indicating a marginal toxicity to legumes (Edmeades et al 1983). The site was known to respond to P and S (Craighead 2004;Craighead unpublished data).…”

Section: Sitementioning

confidence: 99%

The effect of two lime sources on short-term changes in soil pH under Marlborough hill country pasture

Craighead¹

2005

ProNZG

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The effect of fine slurried lime applied at 200 kg/ha on soil pH at two depths was compared with 400 and 2500 kg/ha of local agricultural (ag) lime in the presence and absence of sulphur (S) superphosphate 20, in Marlborough hill country for one year. In the absence of fertiliser all lime treatments significantly raised soil pH in the top 25 mm for the 355 days after application. Initial responses declined from day 14 or 35 to day 138 before increasing at day 355. Fine lime did not significantly alter pH in the 25-75 mm zone until day 355. The low rate of ag lime significantly raised pH in the 25-75 mm zone for the whole year. The high rate of ag lime significantly increased pH in the top 25 mm over the other lime treatments for the 355 days and over the fine lime treatment in the 25-75 mm zone from day 35. In the presence of fertiliser in the top 25 mm, fine lime significantly increased pH at day 14 only, and low ag lime at day 355 only. The high rate of ag lime significantly increased pH over the control from day 14 and over the other lime rates from day 35. In the 25-75 mm zone the high rate of ag lime significantly increased pH over the control and the low ag lime rate from day 71 but was significantly better than fine lime from day 35. It is likely that rain immediately after application and higher than average annual rainfall hastened the release of fine and intermediate particles of lime. However provided lime meets the accepted criteria for particle size distribution and maximum size it is the rate of application which dictates the magnitude of response. In Marlborough hill country it was 43% cheaper to aerially apply 400 kg/ha of ag lime compared to 200 kg/ha of fine lime with the added benefit of a greater residual effect beyond one year. Keywords: agricultural lime, fine lime, slurry, soil pH

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A review of research on the fertiliser and lime requirements of pasture on the eastern coast of the North Island

Gray¹,

Morton

2019

Journal of NZ Grasslands

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The soils on the eastern region of the North Island (Wairarapa, Tararua, Hawke’s Bay, Poverty Bay, East Coast) are mainly of the Brown, Pallic, Recent (Sedimentary) and Pumice orders and are most are farmed with sheep and cattle on hill pastures. Several field trials have been carried out to determine the pasture growth requirements for phosphorus (P), sulphur (S), potassium (K), nitrogen (N), lime and molybdenum (Mo) in this region since the 1960s and the results published in various papers. This review considers the results of these studies collectively and in relation to national datasets. Sedimentary and Pumice soils with Olsen P levels of less than 12 µg/mL required annual application of P. Significant pasture production responses to S were measured where initial soil sulphate-S levels were less than 6 ppm. Additional K for sheep and beef pastures was required mainly on Pumice and Brown soils with soil QTK levels of 6 or less. Large pasture DM responses to N were measured in most trials, especially on steep slopes and sunny aspects with low legume content. Lime is needed to maintain soil pH once it decreases to 5.4 on hill soils. Molybdenum deficiency in legumes can occur on sedimentary soils and should be monitored by clover-leaf analysis.

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Phosphate sources for pasture production on summer‐dry soils in eastern New Zealand

Abstract: In the period 1988-96

Cited by 3 publications

References 16 publications

Pasture responses to phosphorus and nitrogen fertilisers on East Coast hill country: Total production from easy slopes

Pasture responses to phosphorus and nitrogen fertilisers on East Coast hill country: Total production from easy slopes

The effect of two lime sources on short-term changes in soil pH under Marlborough hill country pasture

A review of research on the fertiliser and lime requirements of pasture on the eastern coast of the North Island

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