02 June 2015 | Online since 2003



21 April 2014|News

Precise timing for thinning agent in apples


Apple growers are looking for ways of reducing or eliminating expensive hand thinning so that they can produce the right balance of crop load and fruit size more cost-effectively. There are suitable products such as 6-benzyladenine that will increase the number of single fruits and so thin apples chemically, but they need to be applied precisely within the correct conditions of application.

Stewart Woodhead, Technical Manager for Interfarm UK explains that the active ingredient in MaxCel, 6-benzyladenine, is a cytokinin-type plant growth regulator found in nature. “This group of plant hormones affects a number of processes in plants including apical dominance, axillary bud growth, cell division and growth and also leaf senescence. MaxCel selectively thins developing apples. Fruit size is also increased due to reduced competition for nutrients and due to an enhanced rate of cell division and growth, resulting in increased marketable yields.”

“Timing of MaxCel is crucial to its efficacy. The label says that it should be applied when the king fruitlet has a diameter of 7-15 mm, with the optimum range being 10-12 mm in size. But it is the temperature that is key to its success. MaxCel should be applied at the start of a warming period when the maximum daily temperatures for the 2-3 days following application are expected to be 15-18° C. It should not be applied when temperatures are below 15° C,” says Stewart.

MaxCel is recommended on all varieties of apples at dose rates of 3.75 to 7.5 litres/ha. The dose rate varies on the variety to be thinned and the state of the crop. Formulated as a soluble concentrate, it is ready for the grower to use and is unique in requiring no additional adjuvants. One application can be made per year and the latest time of application is when the king fruitlet is 15mm. It is fully compatible with IPM programmes.

It is also important to ensure adequate coverage of fruit and foliage but without excessive run-off. To achieve this, water volumes should be adjusted according to tree size and spacing. Water volumes of 1000 litres/ha in air assisted sprayers will give adequate coverage of fruitlets and foliage.

“Achieving premium size grading is important for marketing quality produce and enhancing fruit size alone can more than pay for the treatment. The use of MaxCel can increase growers’ returns by reducing hand-thinning in apples, improving fruit size and quality. It also promotes strong return blooms for the following year, so it is not just the one benefit of fruit thinning in one year,” says Stewart Woodhead.

Download




Comments


No comments posted yet. Be the first to post a comment

To post comment without approval login or register

Display name

Please enter your name

Email (optional)
Comment

Please enter your comment

Post Comment

Your comment submitted successfully.Please wait for admin approval.

Some error on your process.Please try one more time.



Jobs


29 May 2015
Research & Knowledge Transfer Manager
De Lacy Executive are seeking to recruit a Research and Knowledge Transfer Manager for a leading organisation. You will be re...

1 June 2015
Job for Teleporter Driver
Proficient person required for teleporter driving, duties to include stacking of haylage bales without da...

1 July 2015
Tractor & Combine Operator. This could be a permanent job on Notts / Lincs border.
Tractor & Combine operator for combineable and root crop harvest with a family farming business growing a broad...

1 June 2015
Stockman with land management skills: Interesting livestock job on farm in East Suffolk
We are looking for a self motivated, experienced person to take over the running of our Suffolk Red Poll herd and continue th...

1 June 2015
Job for Arable worker >>> Kent
Experienced, enthusiastic, self-motivated person required for 1,500 acre mixed arable/livestock farm in North West Kent with ...



Top stories you may have missed
15 May 2015 | Arable

Scotland’s Rural Affairs Secretary Richard Lochhead is calling on the Europ...


15 May 2015 | Finance

As the country settles down following the turmoil of the general election, ...


14 May 2015 | Animal Health

New research from the Universities of Bristol and Cambridge has found that ...


13 May 2015 | Animal Health

A new publication to help farmers prevent sheep lameness and offer advice o...


12 May 2015 | Agri Safety

The Farmers’ Union of Wales is putting the spotlight on Liver fluke at next...


5 May 2015 | News

The UK is now third in the global rankings for utility-scale solar energy a...


29 April 2015 | Agri Safety

A recent Rural Watch demonstration and information event gave Farmers’ Unio...


24 April 2015 | Meat Processing

Retailers should confirm their commitments to sourcing UK lamb this season,...


15 April 2015 | Meat Processing

A leading retailer has apologised after selling imported lamb in a Borders ...


9 April 2015 | Finance

The time has come for landlords to expect to see reductions in farm rents, ...