Thursday, 15 October 2020 06:55

The grass can be greener — improving paddock values

Written by  Simon Pontin, LIC FarmWise Consultant
FarmWise consultant Simon Pontin says the regrassing objective is to achieve a quality pasture producing paddock. FarmWise consultant Simon Pontin says the regrassing objective is to achieve a quality pasture producing paddock.

Paddocks are among a farmer’s biggest and most important assets but occasionally they need a makeover in the form of regrassing.

There are several reasons why paddocks need to be regrassed. It maybe there are too many weeds, animals have damaged the paddock over winter, species have run out or low producing native grasses have taken over. Or it could be that the paddock has been in a crop and is now being ready to be rotated back into pasture.

The regrassing objective is to achieve a quality pasture producing paddock that will optimise the use of the land for your location and the farming system you use. If you’re not sure, get advice from your local seed merchant technical advisor and work through a plan with your farm advisor. They’re there to help you achieve the best from your land; with good species selection and preparation key components in a newly re-grassed paddock being really productive.

Walking the talk

I encourage all farmers to undertake pasture walks during the season noting down any poor performing paddocks. Pasture measurement information can also be added to MINDA (in the Land and Feed section) to enable farmers to see pasture gaps upfront and a more accurate ‘feed wedge’.

Once paddocks have been identified, there are several options for regrassing.

Crops – undertaking a cropping programme before re-establishing in grass

Whether summer or winter crops, the paddock can go through a crop before being put back into pasture. This has the benefit of having the paddock sprayed out typically three times for weeds before grass is re-established - thus minimising unwanted plants taking hold.

Direct drilling grass seed into the paddock

Direct drilling is the preferred method where possible to minimise nitrate losses or working a paddock up (cultivate) and then drilling and sowing. The process is to spray a paddock out and then after a few days direct drill or cultivate.

If you go to the effort of regrassing then I suggest the work is done as well as possible. It’s also an opportunity to fix a wet spot or rid the paddock of stubborn weeds. If there’s a particular weed issue then add targeted sprays to eradicate the problem. Correct the pH of the paddock at the start along with any capital fertilizer required to achieve the fertility desired. If there is a pan or the soil structure is compacted, a sub soil or deep cultivate would be beneficial.

Weeding out the good from the bad

I often see paddocks sprayed out and resown shortly afterwards that regresses to the original state quickly. These paddocks often have a large component of native grasses in them to start with. 

Spraying them out is only half the problem as they have normally seeded and produced a great deal of seed dormant in the soil. Given some light and a little cultivation these seeds germinate competing with the seed sown. The answer is to invest three weeks of time to allow these weed seed grasses to germinate along with any broad leafed weeds and then do a second spray out. This will help increase the lifetime of the pasture by several seasons.

There’s a number of techniques to regrassing a paddock to consider depending on soil, terrain and rainfall amounts. Over time most paddock’s production will fall and at some stage they will need to be renewed to maintain a farms performance. 

I recommend that care is taken to put right drainage, soil structure, and fertility, along with weed control to allow the grass sward the best possible start and optimise your land pasture production.

Grass seed – getting the right seed is critical

The best pasture will be one that suits your location, system and resources. Use the Forage Value Index (FVI) to review what seeds will perform best. Have a chat with your seed supplier and discuss availability and optimal choice for your location, soils and management system. 

Once confirmed, get the order in to avoid delays so that it is ready for you once you are ready to sow. The sooner it’s in the ground, the sooner you’ll be on the way to improving the health of your paddocks and cows this coming season.

• Simon Pontin is a LIC FarmWise Consultant.

More like this

Genetics focus boosts herd

A strong focus on genetics and DNA has paid dividends for Fernside dairy farmer Julie Bradshaw with four of her cows being selected for the LIC breeding programme.

LIC set to deliver strong dividend

LIC has announced its financial result for the 2021-22 year, driven by increased farmer spend on premium genetics and herd improvement services.

Top bull joins Hall of Fame

A 12-year-old bull with over 150,000 daughters has been inducted into an elite animal ‘Hall of Fame’ for his outstanding contribution to dairy herd improvement in New Zealand.

National

Genetics focus boosts herd

A strong focus on genetics and DNA has paid dividends for Fernside dairy farmer Julie Bradshaw with four of her…

Machinery & Products

A baler like no other

While baler-wrapper combinations have become the backbone of baled silage production, one machine stands out from the rest in the…

Small bales in demand

While round or large square bales have the dominant shares in the rural landscape, small square bales still play an…

Amazone's one-pass operation

Ag machinery maker Amazone has paired up its Precea precision air seeder and Combi-Disc 3000 compact disc harrow to deliver…

» The RNG Weather Report

» Latest Print Issues Online

Milking It

$1m remains unpaid

OPINION: A group of New Zealand farmers who collectively sold $1 million worth of cattle to a live export company…

Too close for comfort

OPINION: One vet believes the threat of foot-and-mouth entering New Zealand is much higher than what authorities tell the public.

» Connect with Dairy News

» eNewsletter

Subscribe to our weekly newsletter