The Effect of Irrigation Interval and Soil Type on Pasture and Lucerne Production

Hayman, J. M.

doi:10.33584/jnzg.1985.46.1705

Cited by 10 publications

(10 citation statements)

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“…On 8 of the sites, where the soil ranged from stones to the surface to no stones to 600 mm, the response curves to irrigation and maximum yields were very much the same as the Winchmore site in comparable years (Hayman & McBride 1984;Hayman 1984). They concluded that while other sites ran only 5 or 6 years, the Winchmore site gives an accurate guide to irrigation response of pasture for much of the irrigatable land in Canterbury.…”

Section: ' Number Of Irrigations ___)mentioning

confidence: 93%

“…Other methods and measurements were similar over all sites and are described in Hayman &McBride 1984 and.…”

Section: Approachmentioning

confidence: 99%

“…Canterbury has been reported at Winchmore Research Station for 25 years , and other sites; Mid-Canterbury (8 sites), Rakaia (2 sites), Waiau (2 sites) for shorter periods (Hayman & McBride 1984;Hayman 1984). The Winchmore trial continues and data from the next nine years to date, is included.…”

Section: Introductionmentioning

confidence: 99%

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Pasture yield responses to irrigation in Canterbury

McBride¹

1994

ProNZG

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Major findings from 13 pasture irrigation experiments conducted in Canterbury are discussed. Yields and response curves on 8 of the experimental sites were very similar to those of the long-term trial (34 years) site at the Winchmore Research Station. Irrigating when soil moisture dried to 50% asm (available soil moisture), increased annual pasture DM yields by an average of 5.2 t/ha DM (80% increase over the non-irrigated yield). Response per irrigation and yield variation between years decreased as the number of irrigations increased. During water restrictions, irrigators often choose to either keep watering their whole farm with a longer irrigation return period, or drop out paddocks and fully irrigate the remainder. The irrigation response data are used to discuss these and other possible strategies. Keywords: irrigation, pasture yields, response curves, water restrictions

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Section: ' Number Of Irrigations ___)mentioning

confidence: 93%

“…Other methods and measurements were similar over all sites and are described in Hayman &McBride 1984 and.…”

Section: Approachmentioning

confidence: 99%

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Pasture yield responses to irrigation in Canterbury

McBride¹

1994

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“…Where lucerne can be irrigated, the optimum frequency and timing of water application is dependent on the available soil water-holding capacity (Hayman 1985). However, irrigation also encourages weed seed germination.…”

Section: Summer (December-february)mentioning

confidence: 99%

Crop growth and development affect seasonal priorities for lucerne management

Moot¹,

Brown²,

Teixeira³

et al. 2003

NZGA R&P Series

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Successful lucerne stand management requires balancing animal and plant requirements to produce crops of high quality and yield at times of high animal demand. Understanding the impact of environmental signals on crop growth and development can aid management decisions throughout the season. In spring, crops remobilise reserves from the roots to shoots and expand nodes accumulated through the winter, producing rapid stem extension and canopy closure as temperatures increase. The timing of spring defoliation should be based on crop yield and animal requirements rather than any specific developmental stage. Through spring and summer, crops should be rotationally grazed, with highest lamb live-weights achieved from 6-8 weeks grazing solely on lucerne. Summer crop production is dependent on rainfall and the plant available water content. During summer, grazing at the appearance of open flowers or basal buds is recommended as a compromise between maximum yield and quality. In autumn, the priority of assimilates allocation in the crop changes from above to below ground growth. To enhance the recharge of root reserves, an extended period of flowering is recommended in February or March. The time of flowering is dependent on the accumulation of thermal time and increases as photoperiod shortens. In periods of prolonged drought, lucerne herbage should be hard grazed and then spelled until the end of late autumn regrowth. A final hard grazing in June or early July, to remove overwintering aphids, should be followed by spraying 7-14 days later. Crops continue to develop nodes through the winter, and stands should be spelled until spring to ensure nodes are not removed by grazing, as this delays regrowth and reduces dry matter production. Key words: Flowering, grazing, herbicide, Medicago sativa, nodes, photoperiod, phyllochron, root reserves

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“…Summer 2012-13 was drier than average ( Fig. 1) and although the site was irrigated, the low available water capacity of the Lismore soils (Molloy 1988) and very dry summer conditions meant fortnightly irrigation might not have been enough to achieve maximum production (Hayman 1985).…”

Section: Discussionmentioning

confidence: 99%

Effect of urine, potassium and dicyandiamide application on pasture production from a free-draining Canterbury dairy pasture soil

Carey

Cameron

et al. 2014

New Zealand Journal of Agricultural Research

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A cut-and-carry trial was conducted on a low quick-test potassium (QTK ≤ 4) Lismore soil during 2012-13 in Springston, Canterbury to test the responsiveness of a dairy pasture to urine, dicyandiamide (DCD) and potassium (K) applications. Over the full year the applications of urineonly, urine + K, urine + DCD, and urine + DCD + K increased pasture production significantly over the non-urine control treatment by 23%, 29%, 36% and 42%, respectively. Applications of K, DCD and DCD + K increased production over the urine-only treatments by 5%, 10% and 15%, respectively, for both spring and full-year totals. There were no significant increases to K or DCD applications for non-urine treatments. The pasture responses to K and DCD applications were attributed to maintaining better balanced plant nutrition, rather than to soil K deficiency per se, as urine application maintained QTK levels to recommended values (QTK c. 6) for the duration of the trial. However, K deficiency may still have occurred at times of high demand where K uptake was restricted by the shallow soil depth. Although these differences were considered to have their roots, at least partly, in K nutrition, it may also reflect differences that are particular to cut-and-carry trial management and measurement. Continual harvesting of dry matter (DM) reduces K availability quickly in some soils even after large initial K applications in urine (>800 kg K/ha). The findings of this cut-and-carry trial show that regular K application can influence pasture DM responses to the urine-nitrogen retained in soil, and to the use of a nitrification inhibitor, and not just when soil K levels are low.

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The Effect of Irrigation Interval and Soil Type on Pasture and Lucerne Production

Cited by 10 publications

References 0 publications

Pasture yield responses to irrigation in Canterbury

Pasture yield responses to irrigation in Canterbury

Crop growth and development affect seasonal priorities for lucerne management

Effect of urine, potassium and dicyandiamide application on pasture production from a free-draining Canterbury dairy pasture soil

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