John Cline

Professor of Pomology and Tree Fruit Physiolgy, Univ. of Guelph. Associate editor Can. J. Plant Sci. Serving the Canadian Tree Fruit Industry. HTx.

[Kathryn Carter @KathrynCarter14]

Peach harvest is well underway and Sofia and @UoGAppleDoc have been busy harvesting peaches from ACC thinning trials on peach and plums.

[John Cline @UoGAppleDoc]

I have a MSc and Phd opportunitity available in my lab focusing on tree fruit pomology. The projects focus on the crop load management of peaches and apples. We offer competive stipends and support throughout the entire thesis research. Dettails at https://t.co/sGW41E1vpT

[Research Innovation Office at UofG @CreatedAtGuelph]

Feild trip day - Visiting the Simcoe Research Station today for the #AgRobotics Demo day.

[John Cline @UoGAppleDoc]

Excellent bloom and pollination conditions over the past 7d. Ambrosia, Gala, and Honeycrisp (HC) king fruitlets are 4.7, 4.8, 4.5 mm, respectively (n=50) as of 14-May. However, bloom is quite protracted with plenty of flowers remaining open on Ambrosia. HC and Gala at petal fall.

[John Cline @UoGAppleDoc]

Providence apple trees are in full bloom in our University of Guelph research orchard in Simcoe, Ontario. Providence is an apple developed for rosé cider, jellies, and tart juices. It features red-fleshed fruit that produced cherry-red tart juice. https://t.co/6uSm76H9uC

[John Cline @UoGAppleDoc]

Reducing labour by regulating plant growth in tender fruits https://t.co/1QBpOq0n8Y

[Ontario Agri-Food Innovation Alliance @AgInnovationON]

Through the power of partnership, @uofg and @OMAFRA are supporting world-class research for the agri-food and rural sectors.

[Ontario Agriculture, Food and Agribusiness @AgricultureON]

The Government of Ontario is investing over $8 million in 47 research projects through the Ontario Agri-Food Innovation Alliance.

These projects will help position the province’s agri-food sectors for continued growth and prosperity.

Learn more: https://t.co/WpOhQbcBli

#OntAg

[John Cline @UoGAppleDoc]

I never tire of watching the flower buds develop each spring, and transition through the stages of bloom, fruit set and fruit development. These are images of Providence, a red-flesh apple reaching full bloom. Not the red leaves, bark, and crimson red flowers. A small miracle.

[John Cline @UoGAppleDoc]

In a multi-year study, we are investigating the time of of hedging on labour savings and fruit quality in a super spindle hedgerow Gala orchard.

June 15/22 represented 30 days after bloom, coinciding with 8-10 fully expanded leaves. Fruit are ~25 mm diameter. Trees 5 yrs-old.

[John Cline @UoGAppleDoc]

Crab apples have great utility in the orchard beyond pollinators and aesthetics. Their high acidity, polyphenols and some with red-flesh cultivars, make wonderful additions for cider.

[John Cline @UoGAppleDoc]

Today blossom thinners were applied to Honeycrisp: 1) 2% ATS plus 0.05% non-ionic surfactant; 2) 2.5% Lime Sulphur plus 2% mineral oil. Timing guided by the Pollen Tube Growth Model.

[John Cline @UoGAppleDoc]

Perfect pollination conditions in our research orchards today.

[John Cline @UoGAppleDoc]

The efficicacy of metamitron for thinning apples was studied over several years as a new chemical fruitlet thinner. We studied the influence of rate, timing, and surfactant on reducing crop load. Overall, we found metamitron to be an effect thinner.https://t.co/W44wu8WSc9

[John Cline @UoGAppleDoc]

Actual degree days base 5oC, from Jan 1 to April 17/22 with predicted DD to April 29, at UoG Simcoe. Looking similar to the 2019 & 2020 growing seasons when apple bloom was ~May 25th both years. A relief for tree fruit producers that the season will start later than 2021.

[BBC News (UK) @BBCNews]

Orchards vanishing from the landscape, says National Trust https://t.co/TdD2oe4bbW

[John Cline @UoGAppleDoc]

For those interested in the performance of Rootpac rootstocks for peaches grown in a northern climate, check out our latest study "Early performance of several Prunus interspecific hybrid rootstocks for Redhaven peach in southern Ontario" https://t.co/25MtGl4XrF

[John Cline @UoGAppleDoc]

@iFruitTree Congrats Molly.

[John Cline @UoGAppleDoc]

Apple replant disease is complex and poorly understood soil disease that affects new apple trees when planted in old ochard site. Meaghan Mechler @meaghanmechler1, a PhD candidate in my lab, has provided a blog on her ongoing mitigation research
https://t.co/Z9dSt4xCG1

[John Cline @UoGAppleDoc]

We are pleased to report on a multi-year study investigating the horticultural and juice attributes of several European and North America apples used for (hard) cider. Several showed promise. For more details:
https://t.co/3NFag1ZqRC

https://t.co/x8UIbQIZUW