Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Willamette AG is a fertilizer and agricultural chemical supplier located in the lower Oregon Willamette Valley. MicroCal is manufactured at the plant in Harrisburg, OR.

In the late 1990’s Kurt Kayner the founder and owner of Willamette AG (Kurt also farms 600 acres) decided he could formulate a better calcium carbonate based sunblock. Through several years of disappointing results he finally found the current MicroCal formulation. The advantages of this formulation is the unique ability to remain in suspension for several years. If not allowed to freeze the product can be kept over from season to season. The particle size of .45 microns is also the smallest in the industry and results in improved sunblock properties as well as enhanced sprayability and coverage.

MicroCal has been shown to be effective in a large variety of fruits, vegetables and nuts. MicroCal has also shown the ability to provide foliar calcium to plants and trees.

Increases in crop yield and quality have convinced growers to include MicroCal in their regular spray program (MicroCal has shown no issues when mixed with other ag chemicals).

MicroCal is available in 250 gallon totes and 2.5 gallon jugs.

Willamette AG is actively seeking distribution in many markets both domestic and international. Contact us if you have an interest in distributing or using MicroCal.

Willamette AG™
420 Territorial St.
Harrisburg, OR. 97448

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Melissa Hansen, in a June 2009 Good Fruit Grower article, reports that : Jeff Leonardini, a Washington State apple grower, says:

“We put on 12 sprays that year, but when we ran the fruit through the warehouse the culls were down by at least 50%, it was huge! Well more than enough to offset the cost of the program.”
Leonardini estimates he puts at lease $1,600 more per acre in the bank thanks to the application of Eclipse. Eclipse is a registered trade name of Microcal.

MicroCal was developed for the USA Apple industry. The thin film sunshield (made from food grade calcium carbonate) filters out the damaging part of the sunlight spectrum, while allowing beneficial rays to reach the fruit. MicroCal does not inhibit other crop protection applications.

MicroCal has the potential to economically reduce sun damage to a broad range of food crops—including but not limited to apples, pears and other pome fruit, mangos, citrus, avocadoes, tomatoes, capsicums, melons, olives, wine grapes, transplant seedlings, pineapples and nuts.


Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Calcium uptake in conifers using MicroCal™

Calcium deficiency symptoms in crops are often called physiological disorders. Some of the symptoms are:

It must be remembered that these problems are caused by an inadequate supply of calcium to the affected tissues. These deficiencies can occur even when the soil appears to have an adequate presence of calcium. Adjusting soil pH based on soil test results is basic in soil fertility. Without adequate soil pH nothing else works properly in relation to plant nutrient uptake and plant nutrition. However it should not stop at this, as soil pH alone is not always the best indicator of soil calcium levels. In many cases, with soil tests that have a pH above 6.2, a buffer pH is not performed on the soil. In the case of a crop that requires calcium for quality, total calcium availability is more important than soil pH. It is with this in mind that a trial was conducted in the summer of 2014 on the ability of conifer trees to absorb calcium when Microcal™ is applied. Results have shown that significant calcium is absorbed.

MicroCal™, in a solution of 15 gal MicroCal™ to 100 gal water, was applied using a backpack sprayer.

The plant species tested were 3 year old Grand and Noble Fir.


On June 22, 2014 a control sample was taken then MicroCal was applied at a rate of 3 gal/acre and 7 gal/acre on separate plots. 1 month later a sample was taken and the amount of calcium in the sample was compared to the control.

The testing was conducted by:
Will Austin
Lab Director
Central Analytical Laboratory
Oregon State University

Trial was conducted at a Christmas Tree site owned by Holiday Tree Farms of Corvallis, Oregon.

Results (in Ca ppm):
Sample Lab Number Ca % gain over Control
Grand Fir Control 140174.01 0.18% ----
Grand Fir 3 Gal 140174.02 0.74% 311%
Grand Fir 7 Gal 140174.03 0.90% 400%
Noble Fir Control 140174.04 0.25% ----
Noble Fir 3 Gal 140174.05 0.56% 124%
Noble Fir 7 Gal 140174.06 0.90% 260%
This trial confirms that MicroCal™ supplies absorbable calcium to conifer trees. This is important in preventing the above listed calcium deficient maladies. Conifer growers should strongly consider including MicroCal™ in their regular spray program.

For more information contact:

Rod Mooers
Willamette AG
420 Territorial St.
Harrisburg, OR. 97446
Office – (541) 995-0100
Mobile – (541) 913-9454

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Chemical Composition Comparision of Leading Sunblock Products

  Willamette AG
Lab Used CRC Lab CRC Lab CRC Lab
Date Tested 5/18/2009  6/10/2009 11/4/2010
Mean Particle Size .45 Micron 1.57 Micron 1.05 Micron
Particle Surface Area 15.8 m2/g
77,400 ft2/dry lb
6.9 m2/g
3,400 ft2/dry lb
9.4 m2/g
4,600 ft2/dry lb
Brightness ISO 95.23 89.61 90.29
Yellowness (Elrepho) 0.35 2.34 4.91
All samples heated to 1400o C to remove CaCo2 and measured for elemental composition using a Brucker x-ray flouresecnce meter.
Results are indicated in % of oxides due to the lack of CO2.
CaO % 98.2 90.08  0.16
MgO % 0.92 1.49 0.5
Al2O3 % ND 0.55 47.81
SiO2 % 0.01  4.59 46.43
TiO2 % ND 0.01 3.02
K2O % 0.12 0.21 ND
Fe2O3 % 0.02 0.13 0.62

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Questions, comments? We would love to hear from you.

Mailing Address:

420 Territorial St.
PO Box 316
Harrisburg, OR. 97446

Call or Fax Us Monday-Friday, 9am-5pm PT:
Phone: 541-995-0100
Fax: 541-995-6647

Or you may e-mail using the contact form below:
Your Name:
Your E-Mail:
Call Back Phone Number:(Optional)
Best Time To Callback:
Message Subject:
Your message to us:

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Micronized Liquid Calcium Supplement
Application Info

Guaranteed Analysis Calcium (Ca): 25.0%
Derived from micronized Calcium Carbonate

Average particle size: 55 Micron

ISO brightness (dry): 92

3.44 pounds of Calcium per gallon
(Product weight is 13.77 pounds per gallon)

Information regarding the contents and levels of metals in this product is available on the internet at:

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Directions for use:

MicroCal is formulated with special spreading agents and dispersants, so no additional adjuvant is required.

Directions for mixing:
Fill tank half full of water, with agitator running, add total amount of MicroCal. Finish filling with desired amount of water. Citrus and Walnuts: Mix 6-8 gallons of MicroCal with sufficient water to make 100 gallons of spray. Apply 100-500 gallons of spray per acre. Apples, Apricots, Cherries, Nectarines, Peaches, Plums, and Prunes: To help prevent sunburn, mix 2-5 gallons of MicroCal in sufficient water to make 100 gallons of spray. Apply 100-500 gallons of spray mixture per acre. Tomatoes, Melons and Peppers: Mix 6-8 gallons of MicroCal in sufficient water to make 100 gallons of spray. Apply 80-100 gallons of spray per acre. Above rates are in a manner as described by "Morshet". Use of MicroCal as a sunblock material will NOT enhance photosynthesis.

To improve soil penetration, addition of penetration agents is recommended. MicroCal can be applied using drip, pivot, or flood irrigation. Soil and plant tissue testing should be performed to determine the calcium needs of each crop and soil type. For most crops 5-15 gallons per acre of MicroCal should be applied through irrigation water.

Apples: Repeat application of 1.5-2 qts/acre applied from petal fall up to one month before harvest. A single application of up to 1 gl/acre may be made from petal fall to just after "June Drop". Min water rate: 30 gl/acre. Blueberries: 2 qt/acre applied 10 days after petal fall has finished. Bushes being grown for a second cropping year should receive the fruiting year program again. Water rate: 100 gl/acre. Citrus: 1-2 qt/acre at 13 day interals. Cotton: 2 qt/acre at early flowering. Water rate: 3-20 gl/acre. Cranberries: 1.5 qt/acre at early bloom. Water rate: 50 gl/acre. Deciduous Nuts: 2 qt/acre 7 days after petal fall. Water rate: 50 gl/acre. Almonds: 3 pt/acre in 50-100 gallons of water. 3 applications: 1@5% bloom, 2@ full bloom, 3@ 7-10 days after petal fall. Peas: 2 qt/acre applied at the 4-6 inches stage. Pears: Repeat applications of 1.5-2 qt/acre at 7-10 day intervals applied from petal fall up to 1 month before harvest. Peppers, Tomatoes (field grown): One to four applications of 2 qt/acre from flowering on second truss onwards up to one month before harvest. Stone Fruit: Two applications of 2 qt/acre sprayed 6 weeks and 4 weeks before h Turf: 1.5-3 fl oz/ 1,000 sq ft. Apply as soon as growth commences in the spring and repeat at 10-14 day intervals as necessary. Vines (Grapes): Three applications of 2 qt/acre at bunch closure; start of ripening; and two weeks later. Water rate: 20 gl/acre.

Prior to any fertilizer or pesticide application all spray mixing and application equipment must be cleaned. Tank Mixing: Read ALL product labels carefully and adhere strictly to the instructions for use and advice regarding whether or not products should be tank mixed. Many variables, outside the control of Willamette AG, can influence the performance of tank-mixed products and therefore tank mixing products is entirely at the risk of the end- user. A limited crop area only should be treated initially when using unfamiliar tank mixes. Willamette AG makes no express warranties other than those set forth herein. The manufacturer neither makes nor intends, nor does it authorize any agent or representative, to make any other warranties, express or implied, and it expressly excludes and disclaims all implied warranties of merchantability of fitness for particular purpose, or any warranty of quality or performance.

Net Contents 2.5 Gallons

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.

Download MSDS PDF Click Here

Built For Willamette AG Inc.™

By AltSol Group Inc. © All Rights Reserved.