Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Good nitrogen uptake whatever the weather

Good nitrogen uptake whatever the weather


Recent rain has been welcomed by farmers, but an eye on the weather is all important to ensure that nitrogen fertiliser applied to the soil is retained for pasture growth rather than being lost to the atmosphere.

Despite good rainfall, farmers shouldn’t think that good soil moisture levels and cooler conditions are enough to prevent ammonia loss from urea. New Zealand research has shown that ammonia loss actually increases with rising soil moisture, while risk of ammonia volatilisation shows no strong seasonality - meaning it doesn’t just happen in summer.

Recent Ballance Agri-Nutrients trials through Landcare Research suggests that 10 mm of rainfall is needed within 8 hours of application to minimise volatilisation and ensure the best nitrogen uptake, but MetService data shows that even with recent April downpours, the days with rain over 10 mm were not as common as farmers might expect.

For example, Wairarapa has recorded just six April days out of 27 with rain over 10 mm, Ashburton and the Waikato five, Taranaki four, Whangarei, Rotorua and Palmerston North three and Taupo just two.

Ballance Science Manager, Aaron Stafford, says that at the upper end of the scale, some areas experienced more than 50 mm of rain two days in a row, meaning that if urea had been applied, direct leaching would become a risk. This means the window for safely applying urea was further reduced.

“In reality with these weather patterns you are unlikely to get above 10 days a month that meet the criteria to mitigate volatilisation with ideal weather, which means that unless you get lucky, you’ve got around a 70% risk of applying it at a time when volatilisation is likely to occur. Can you afford the risk?”

Using a product like SustaiN, which is urea coated with AGROTAIN® nitrogen stabiliser, offers farmers more flexibility to apply nitrogen without trying to second-guess the weather – with subsequent improvements in nitrogen availability and uptake resulting in more dry matter per hectare.

“We know SustaiN showed an average 50% reduction in ammonia volatilisation relative to urea, so unless it is actually raining when you apply urea, or you can guarantee 10 mm of rain within 8 hours, it is a better solution for minimising ammonia loss and therefore harnessing the best response possible from your nitrogen fertiliser investment.

“In short, using a product like SustaiN is your safest bet to ensure that your investment in urea is going to bring you the best returns – rain or shine.”

ENDS

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Forestry: Man Charged After 2013 Death

Levin Police have arrested and charged a man with manslaughter in relation to the death of Lincoln Kidd who was killed during a tree felling operation on 19 December 2013. More>>

ALSO:

Smells Like Justice: Dairy Company Fined Over Odour

Dairy company fined over odour Dairy supply company Open Country Dairy Limited has been convicted and fined more than $35,000 for discharging objectionable odour from its Waharoa factory at the time of last year’s ”spring flush” when milk supply was high. More>>

Scoop Business: Dairy Product Prices Decline To Lowest Since July 2012

Dairy product prices dropped to the lowest level since July 2012 in the latest GlobalDairyTrade auction, led by a slump in rennet casein and butter milk powder. More>>

ALSO:

SOE Results: TVNZ Lifts Annual Profit 25% On Flat Ad Revenue, Quits Igloo

Television New Zealand, the state-owned broadcaster, lifted annual profit 25 percent, ahead of forecast and despite a dip in advertising revenue, while quitting its stake in the pay-TV Igloo joint venture with Sky Network Television. More>>

ALSO:

Insurers Up For More Payouts: Chch Property Investor Wins Policy Appeal In Supreme Court

Ridgecrest NZ, a property investor, has won an appeal in the Supreme Court over insurance cover provided by IAG New Zealand for a Christchurch building damaged in four successive earthquakes. More>>

ALSO:

Other Cases:

Royal Society: Review Finds Community Water Fluoridation Safe And Effective

A review of the scientific evidence for and against the efficacy and safety of fluoridation of public water supplies has found that the levels of fluoridation used in New Zealand create no health risks and provide protection against tooth decay. More>>

ALSO:

Scoop Business: Croxley Calls Time On NZ Production In Face Of Cheap Imports

Croxley Stationery, whose stationery brands include Olympic, Warwick and Collins, plans to cease manufacturing in New Zealand because it has struggled to compete with lower-cost imports in a market where the printed word is giving way to electronic communications. More>>

ALSO:

Prefu Roundup: Forecasts Revised, Surplus Intact

The National government heads into the election with its Budget surplus target broadly intact, delivering a set of economic and fiscal forecasts marginally revised from May to reflect weaker commodity prices and a lower tax take. More>>

ALSO:

Get More From Scoop

 
 
Computer Power Plus

Standards New Zealand

Standards New Zealand
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news