Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search


New Nutrient Management Tool for Reducing Nitrogen Leaching



Nutrient losses to waterways can occur from rainwater either moving organic matter, sediment and nutrients from land surfaces into surface waters, or leaching of nutrients, such as nitrogen, potassium and sulphur, through soil into groundwater. Losses due to leaching are often greatest when soils are wet, namely during winter and often after summer crops, such as maize, brassica or fodder beet are harvested or grazed in autumn and early winter. Cover crops such as oats have been used as a management option to reduce nitrogen leaching, but the degree of benefit is largely dependent on the management for achieving high crop yields. This will include sowing date and establishment method, with an early sowing date being most beneficial. The challenge is to use a crop which can establish and grow during the wetter and the colder winter months.

Triticale due largely to its ryecorn parentage has a deep root system resulting in an excellent nutrient scavenging ability. Triticale destined for use as a winter forage supplement is typically sown in March through to early May. The breeding of a new and unique triticale cultivar with excellent winter activity and early establishment vigour provides an improved option for nutrient management compared with existing winter cover crops.

Field trials at a number of sites and over years, have shown that this winter active triticale can remove 19%, 21%, 28%, 35% and 45% more nitrogen from wet soils than another triticale, oats, ryecorn, wheat and annual ryegrass, respectively, and as such provides another mitigation option for managing nitrogen movement and losses. The key to this ability is in the varieties ability to actively grow in a New Zealand winter.

Trial commercial crops conducted by the Seed Licencee Cates Grain & Seed Ltd based in Ashburton have demonstrated the plants ability to grow quickly in the winter months and accumulate valuable dry matter that not only absorbs nutrients, but can also be used as a high quality feed source during and coming out of the winter months.

Cover crops can be used to reduce nitrogen losses during winter. The development of a winter active triticale has provided farmers with an improved option. On cultivatable soils it can be sown early (May) or later (July) into colder soils and in both cases captures more nitrogen than other commonly used cropping options or fallow ground.

Winter active triticale offers farmers a practical and improved option for reducing nitrogen losses from cold wet soils after removal of summer/autumn crops and at the same time providing a valuable, fast growing high quality feed option for early spring.

© Scoop Media

Business Headlines | Sci-Tech Headlines


National: National Backs Businesses With $10k JobStart

National will provide a $10,000 cash payment to businesses that hire additional staff as part of our commitment to keeping New Zealanders in jobs, National Party Leader Todd Muller and Finance spokesperson Paul Goldsmith have announced. Our JobStart ... More>>


DIY Law: Government Exempts Some Home Improvements From Costly Consents

Homeowners, builders and DIYers will soon have an easier time making basic home improvements as the Government scraps the need for consents for low-risk building work such as sleep-outs, sheds and carports – allowing the construction sector ... More>>


Media Awards: The New Zealand Herald Named Newspaper Of The Year, Website Of The Year At Voyager Media Awards

The New Zealand Herald has been labelled a “powerhouse news operation” as it claims the two biggest prizes – Newspaper of the Year and Website of the Year – along with many individual awards at the 2020 Voyager Media Awards Website of the ... More>>


ASB Bank: ASB Takes The Lead Again With New Low Home Loan Interest Rate

ASB has moved again to support its customers, cutting a number of home loan rates, including the two-year special rate to a new low of 2.69% p.a. Craig Sims, ASB executive general manager Retail Banking says the reduced rate will be welcome news for many ... More>>


Nathan Hoturoa Gray: The Problems With Testing And Case Statistics For Covid-19

To begin to understand disease transmission in a country requires adequate testing of your population with properly vetted, accurate tests. As the world struggles to find what 'adequate percentage' of the population is necessary, (estimates predict ... More>>


RNZ: Fletcher Building To Lay Off 1000 Staff In New Zealand

The construction company will cut around 10 percent of its workforce as it struggles with the fallout from Covid-19. More>>


Can Pay, Won't Pay: Cashflow Moves Urged

Government Ministers are asking significant private enterprises to adopt prompt payment practices in line with the state sector, as a way to improve cashflow for small businesses. More>>


Gordon Campbell: On Why We Should Legally Protect The Right To Work From Home

For understandable reasons, the media messaging around Level Two has been all about “freedom” and “celebration”, but this is not necessarily going to be a universal experience. When it comes to workplace relations, Level Two is just as likely to ... More>>


Auckland Airport: Thousands Of Kiwis Travelling For Queen’s Birthday Weekend

Confidence in domestic travel is beginning to steadily ramp up, with thousands of Kiwis travelling within New Zealand for Queen’s Birthday.
Nearly 400 flights will be operating to and from Auckland Airport over the long weekend... More>>


Science Media Centre: Understanding 5G Concerns – Expert Q&A

Recent attacks on cell phone towers have brought concerns over the rollout of 5G technology into sharp relief.
While scientific research has consistently shown that the technology does not adversely affect human health, public concerns about its impact have spread around the world, fueled in part by growing misinformation online. The SMC asked experts to comment... More>>


Trade: Record Monthly Surplus As Imports Dive

Imports in April 2020 had their biggest fall since October 2009, resulting in a monthly trade surplus of $1.3 billion, Stats NZ said today. “This is the largest monthly trade surplus on record and the annual goods trade deficit is the lowest ... More>>


Media Blues: Stuff Chief Executive Buys Company For $1

Stuff chief executive Sinead Boucher has purchased Stuff from its Australian owners Nine Entertainment for $1.
The chief executive was returning the company to New Zealand ownership, with the sale is expected to be completed by 31 May.
"Our plan is to transition the ownership of Stuff to give staff a direct stake in the business as shareholders," Boucher said in a statement.... More>>


RNZ: Bar Reopening Night 'much, Much Quieter'

Pubs and bars are reporting a sluggish first day back after the lockdown, with the fear of going out, or perhaps the joy of staying home, thought to be a reason for the low numbers. More>>


Stats NZ: New Zealand’s Population Passes 5 Million

New Zealand's resident population provisionally reached 5 million in March 2020, Stats NZ said today. More>>

NIWA: Seven Weeks Of Clearing The Air Provides Huge Benefits: Scientist

Seven weeks of lockdown has provided evidence of how pollution can vanish overnight with benefits for the environment and individuals, says NIWA air quality scientist Dr Ian Longley. Dr Longley has been monitoring air quality in Auckland, Wellington ... More>>


Government: Milestone In Cash Flow Support To SMEs

A significant package of tax reforms will be pushed through all stages in Parliament today to throw a cash flow lifeline to small businesses. More>>