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2020 My First Hybrid Hazel Harvest

After 5 years of anticipating the first harvest of hybrid hazelnuts, it finally happened! Twenty-eight of the 75 surviving plants I planted as first year seedlings in 2015 had at least one nut – and some had many more.

It was exciting to watch the nuts develop throughout the summer. Some of the larger bushes (5-7 foot tall) had a very obvious fruit set. Others I had to refer back to my notes to see which had had flowers in the spring and carefully search the plants’ branches. The clusters are beautiful aesthetically but also, as a farmer, it is great to see clusters of 5 or 6 nuts at almost every node on some plants. That indicates great yield potential.

The total weight of the freshly husked nut harvest was 7 pounds but just three bushes accounted for 6 pounds. The size of the nuts was also encouraging. I went low-tech and drilled holes in the bottom of a couple of plastic storage containers – one had 5/8″ holes and the other had 3/4″ holes. The harvest from two of the heavy producers had a majority of the nuts between > 5/8″ & < 3/4″ with some > 3/4″. I dried down most for further analysis (% kernel, dried kernel weight, etc.), but kept nuts from 2 of the best for use as seed for next year.

Some plants were so heavily laden that I applied liquid nitrogen fertilizer two weeks before harvest so the branches did not cannabalize their own resources to fill the nuts and then die off. It was very interesting to see additional branches shoot out as a response – sometimes multiple branches 3 feet tall! More exciting news is that in an inventory I took just last week 80 plants have flowers for next year, including 60 from the 2015 planting and 20 from the 2018 planting. Time seems to pass faster as I age, but sometimes it doesn’t pass fast enough. Looking forward to 2021!

If you are interested in more hybrid hazel information, you may want to check out the book I co-authored with my friends and former employers at Badgersett Research Corporation:

Rutter, Philip, Susan Wiegrefe, and Brandon Rutter-Daywater. 2015. Growing Hybrid Hazelnuts: The New Resilient Crop for a Changing Climate. Chelsea Green Publishing, White River Junction, VT. 249 pp.

Hazel Update (April 2020)

4 year old hazels

Although I haven’t posted anything about the hazel planting in a while, it hasn’t disappeared – in fact it is doing quite well.

Being a scientist by training, I’ve implemented a number of experiments to help me determine which practices are most beneficial in terms of improved plant survival and growth, and efficiency of labor and material use

Additives incorporated at planting –

The first one I spoke of in the establishment page: use of biochar with composted manure vs. only composted manure vs. no additives. As I described on that page the experimental design is not at all robust, but it seems the results are sufficiently different that some mention is appropriate. This year being the first major bloom season I noticed that the number of plants flowering (which is also linked to size of plant) is greater in the two areas where the amendments were added. Below is the percentage of plants flowering in the 3 treatments:

  • no amendments 21/54 39%
  • biochar + compost 12/13 92%
  • compost 9/10 90%
  • total planting 42/77 55%

Weed Barrier Use –

I used 2 foot wide heavy duty landscape fabric in two ways to help hazels compete with surrounding vegetation. The first way was to position it as close as possible to the row to the north of the east-west oriented row. The second was to make a cut perpendicular to the edge to the middle (1′) where a small circle was cut (“keyhole”). This was much more time consuming and many more earth staples were needed to secure the edges of the fabric.

Once again the flowering behavior will be used to sum up (proxy for?) the size and vigor of the plants as a result of reduction in weed competition.

  • Fabric with keyholes 27/38 71%
  • Fabric to north 13/24 54%
  • No fabric (after 1st yr) 2/15 13%
  • Total planting 42/77 55%

Conclusion: it’s worth the extra effort to make the cuts and install staples.

Individual exclosures:

In an area prone to visitation by deer plus calves and sheep on occasion, I felt it worth while to protect the plants with individual exclosures in the 2015 planting. I tried 3 types: plastic mesh + 2 bamboo stakes, chicken wire + 2 rebar stakes, and clouches (from Plants Alive) + 2 staples.

Results: the chicken wire/rebar combo was better than the other two anecdotally (no hard data). The plants too quickly outgrew the clouche and the plastic and extracting the exclosure material was difficult. The chicken wire could be used for 2 years, but was much more expensive. None of the 3 can be recommended to protect against browsing by even relatively small sheep as they can push them over rather easily – chicken wire combo presented better resistance to this than the other 2.

It did become apparent that some protection was better than no protection in terms of survival the first year. Part of this was as a deterrent to “mower blight”. One did need to lift the cages at least every other month to remove weeds/shade from within.

2-way vs. row mowing

By the time the 2018 planting was made the number of plants made creating individual exclosures cost prohibitive. I transitioned to a 6 foot perimeter fence that had 30 pound test-weight mono-filament line strung at 1 foot intervals. To exclude the sheep and calves, I also ran 2 lines of electrified wire at 10″ and 20″. I tried to keep the charge above 5KV at all times with a solar energizer. The 2018 planting was also at “final” (6′ within row) spacing so I could mow in both directions, which I did approximately weekly alternating north/south and east/west.

Results: I lost just 5 of the 95 plants installed that year and mown both directions – 3 to mower blight. Having the individuals isolated from huge clumps of weeds appears to help in survival. I haven’t done as well as intended at lifting and clearing out weeds in the ones protected by chicken wire, and when perimeter fence proved at least mostly effective, I removed the cages so mowing could eliminate weeds closer in to plants. Because of the age difference, no inferences can be made, but I figured folks might be interested in the 2 methods, plus the mono-filament usage.

I’ll try to get an update on nut production when the season arrives. The appearance of flowers on a majority of the 2015 plants was very encouraging.

North Star Farm Tour – Sep 29 & 30!

Final preparations are under way for this weekend’s event. Latest shipment of cleaned and carded wool is wound in 3 ounce balls and labeled, and the last couple of batches of preserves are in the works. Sheep, wool, and tree fruits are the essence of Prairie Plum Farm and this is one of the few sales events of my year. Once again I will be packing up and heading to Melodee and Hugh Smith’s, Clear Spring Yak Farm in rural Welch, MN. It is a phenomenal venue for public events with indoor sales and demonstration area (and luscious food!). Come see the many fiber animals…. yaks, alpacas, rabbits, and, of course, my Babydoll and crossbred lambs! A fun weekend outing with opportunities to learn about animals and fiber to boot. And maybe replenish your fiber stash!!!!

https://www.facebook.com/northstarfarmtour/

 

 

The rovings, both simple and combed (a.k.a. top) have been rolled into balls for easy dispensing. Here are colored and off-white Babydolls’ and one silver Shetland’s most recent shearing harvest.

Daria is a honey – she is first to come to the fence to greet me. Her lovely fleece is coming in beautifully. She is one of the triplets born this spring to Brea and Tioga. She validates my desire to introduce Finn fleece traits into a fraction of my registered Babydoll flock.

Not quite a stunt double – this is Babydoll ewe lamb, Dayna, not the off-white flockmate, Dixie, who most likely will be traveling with Daria and I to Welch. Dixie is camera shy.

Numerous flavors of preserves will be for sale, some from fruit harvested from trees mown by the flock and others to provide variety and all to capture the flavor essence of summer for year-round enjoyment.

End-of-Season Hazel Count

This last week I made a final hazel inventory with the help of my boarder, Mark Hamann. We found 121 first year hazels still alive representing an 82% stocking level and 63% survival. You can see I did lots of replanting even during this first year to replace losses from wandering calves and weak plants. I accepted some weak plants at discount because I wanted specific genetics – so expected some losses.

In general the plants, all from Badgersett, performed well. One high light was the final row, planted on the 16th of August, which has 100% survival to date.  These plants had been upcanned to Anderson bands (AB39, 3″ x 3″ x 9″ or AB410, 4″ x 4 x 10″) and were actively growing when planted and had been growing outside for a number of weeks.  As Philip says, maintaining the momentum is important.

There has been much burrowing by rodents under the landscape fabric I used to keep weed competition down. The diameter of the tunnels is about 1.0 to 1.5″ so could be 13-lined ground squirrels or mice. There are mole tunnels as well in the planting area

Mark with ground cloth removed from row B.

Mark with ground cloth removed from row B.

P15-2267 mowing of big weeds

Snowless winter allowed us to mow tall weeds that had provided summer protection from desication.

, but between the rows, not under the fabric. They tend to be quite a bit larger in diameter. The nicely loosened soil there is much more to their liking than that compacted by the calves on the other side of the fence.

In our year-end clean up, we removed the fabric from one of the 4 rows and mowed the weeds down that had provided protection from drying wind. At this point I figure the risk of providing habitat for rabbits and rodents was greater than the plants getting desicated by wind. I’m hoping they will soon be covered in snow.

Organic Matter and Plant Nutrients

This year I am applying a serious amount of organic matter to the vegetable garden and a new hazelnut growing field. My source is a dairyfarm over in Wisconsin that markets their composted dairy manure as Cowsmos. I have two 1500-pound totes of straight dairy manure compost and two totes of this mixed with biochar – a more persistant form of organic matter used as a soil ammendment.  I had help from a dear friend this week to get the material applied for use in vegetable production for my produce CSA and also to benefit the hazelnut planting going in next month.  The latter was carefully set up to help determine the relative benefit of biochar vs. simple compost. This will be a long term evaluation.

Making use of used feed bags to make paths among beds to be topped with composts.

Making use of used feed bags to make paths among beds to be topped with composts.

Transferring the moist compost to the front loader for transport to the garden.

Transferring the moist compost to the front loader for transport to the garden.

Five-gallon buckets full of biochar/manure mix (darker - to left) and simple manure compost (lighter brown  - to right) in area worked up for hazel planting.

Five-gallon buckets full of biochar/manure mix (darker – to left) and simple manure compost (lighter brown – to right) in area worked up for hazel planting.

Garden Planning

P15-0248e resourcesThe planning for this summer’s plantings is well under way. Orders for plants and seeds have been sent. New for this season will be a planting of 180 hybrid hazels and a collection of small fruits: currants, gooseberries, and bush cherries. The hazel planting will include an trial of the effects of biochar as a soil ammendment in the establishment of perennial crops. I’m also working at devising ways to safely enable sheep grazing among the hazels. Due to the large number of plants involved, the per unit cost needs to be kept low.  Continuing education is… continuing.  I’ll be attending full day class at the Midwest Organic and Sustainable Education Service (MOSES) conference this Thursday on value-added options for fruit growers.  I may add vinegars to my offerings of preserves this year. 

Orcharding Challenges

The fruit and nut orchards have been struggling this year. Since it’s still within the establishment period for some – that is understandable and even expected. The mature fruit, planted by the previous owners, also hit some rocky spots, however.

P14-12-19e peach resprout and dead in bgPeaches: Yes, I know Minnesota is not peach territory, but they produced so beautifully and bountifully last season that I thought perhaps global warming would be my friend and salvation where this crop is concerned. Not to be. The temperature dipped to at least -34F here with devastating results. Four of the 6 trees were killed (though they made feable attempts to leaf out). The last two were killed to the ground and sent up shoots. One of these was so weak that it toppled and died, too. The final one is being fortified from sheep browsing and my nephew and I planted a ‘Reliance’ peach near it that was actually bred/selected to handle -40F.

 

 

P14-12-21c pear psyllaPears: For the most part the pears are doing great.  They have a heavy crop on and, oddly, seem to be ahead of last year in maturation. They have, however, been attacked by some psylla insects that have skeletonized many of the leaves severely.  I hope the crop matures well and the trees have adequate winter reserves considering the lost leaf/photosynthetic surface. The psylla looks like a terrestrial leech with a wider head than body. Note the elongate black blob in the photo.

 

Apples: Moonshadow, the gray shetland wether, is a browser, a fact that I didn’t appreciate fast enough to prevent some damage to my young apples. What was at stake? In May I had planted 8 dwarf apples (4 ‘Liberty’ and 4 ‘Sweet 16’) to extend my harvest season and also provide earlier harvest relative to larger trees.  They are on Bud 9 rootstocks and are reputed to grow to 25 to 30% of seedling tree height – I’m figuring 8 to 10 foot. The first time he and the other sheep were pastured among them, Moonshadow got on his hind legs and, with his forelegs on the cages, ate the tips out of 4 of these and 5 of the 11 small grafts planted in 2012.  The trees are releafing, but it will take some time to retrain a leader in each.  The 4 ‘Cortlands’ and 2 ‘Golden Delicious’ are bearing heavily, but the ‘Connell Red’ are in an off year.  The question remains… did Moonshadow teach this behavior to the young and impressionable Babydoll lambs?

P14-12-31c hickory with raod dustHickory-Pecans: I did no replacement planting this season and the hickory-pecan census is down to 28 – 4 died over winter and another 2 gave up the ghost this summer.  I’m concerned that part of their struggle is due to the lime-laden dust from the gravel road less than 100 feet to the south of the planting.  You can see the dust deposits in the accompanying image. They are likely to handle high soil pH better than the chestnuts (who are luckily, another 40 feet from the road).  I paid for one dust-control application that was effective in August and also gave them a 1/2 cup dose of 20-20-20 fertilizer to try to improve their condition. The fertilizer was delivered in a hole made with a bulb planter about 3 inches deep and 1 foot to their downhill side and the plug was replaced on top of the fertilizer.  To quote a horticulture educator at the Morton Arboretum speaking about transplanting woody plants: ” The first year they sleep, the second year they creep, and the third year they leap.”  I’m looking forward to lots of leaping next year. 

Chestnuts: This is the “creeping” year for the chestnuts, but they are looking tough.  All of them died back to near the snow line this last winter and some are looking very blonde from the continuous lime-dusting. Of the 13 present at the end of last season, 3 didn’t survive the winter and another 2 died this summer.  When they stabilize a bit, I plan to transplant them to a more fertile, moister, and more acidic location among some white pines. 

Wild (Prairie) Plums: The plums ripened at a particularly inopportune time so I only harvested about 4 gallons worth.  This was enough for 2 quarts of plum liqueur (not yet strained), 1/2 gallon wine, and 8 1/2 pints of jelly.  I purchased a new canning aid, a steam juicer, that did a beautiful job on the juice for the jelly.

Additional Stone Fruits: I added two plums, ‘Superior’ and ‘Toka’, and two sour cherries, ‘Montmorency’ and ‘Northstar’, to the orchard this summer.  Due to the time spent on our book for work, “Growing Hybrid Hazelnuts”, they were not planted as promptly as they should have been.  They also suffered from the Moonshadow effect.  The ‘Montmorency’ cherry didn’t make it, but the others are doing reasonably well.  We are experiencing a huge grasshopper population this season, which doesn’t help matters.

Elderberries: My cultivated bushes are still juvenile so my harvest is from the clumps growing behind my property in the drainage swale.  Flowering was glorious this year but pollination was a bit sparse. I collected enough to test out the steam juicer and netted 4 quarts of juice.  Two of these got highjacked for wine.  The wine making is something I have not done before, but I figured it is yet another way to preserve the harvest.  If grape juice and wine are healthful then the juice and wine from elderberries should be even more so.  I’m not quite sure when to start sampling the wine, but I will let you know how that goes… even if it gets poured down the drain.

In spite of the work they require, the taste of their fresh ripe fruits is enough to convince me to plant even more… preferrably with off-set maturation dates so they can get the attention due them at harvest as well.