Water quality, treatments are focus of Cultivate’15 educational sessions

As pressure on fresh water supplies increases, more growers will look at recycling their water. Recycling water can add a whole range of challenges that growers may not have had to deal with before. Speakers at this year’s Cultivate’15 discussed some of the issues growers may face when recirculating and treating irrigation water.

 

By David Kuack

As drought conditions worsen along the West Coast and wildfires scorch many parts of the country, water continues to be on the minds of the public, government officials and water regulating agencies. Environmental disasters like the recent wastewater spill from an abandoned Colorado gold mine into the Animas River also add to the concerns about water availability and water safety.

Continue reading Water quality, treatments are focus of Cultivate’15 educational sessions

Growing through the California drought

Bill Phillimore, executive vice president at Paramount
Farming Co. in Shafter, Calif., spoke at this year’s Seeley Summit which
focused on water. Phillimore, whose company is a producer of a variety of tree
crops, discussed the impact the drought has had on water availability and
trying to operate under severe water restrictions.

By David Kuack
This year’s Seeley Summit focused on “Water: Horticulture’s Next Game Changer?
Nowhere is the effect of water or lack of it more pronounced than in
California. Bill Phillimore, executive vice president at Paramount Farming Co.
in Shafter, Calif., knows firsthand the effects drought can have on an
agricultural producer. Phillimore’s administration responsibilities include the
handling of water and power issues.

Bill Phillimore, executive vice president at
Paramount Farming Co., whose responsibilities
include water and power issues, knows firsthand the
effects drought can have on an agricultural producer.
During this year’s Seeley Summit, Phillimore shared his
company’s experience dealing with severe drought conditions. He sat down with
Hort Americas to discuss what his company has experienced and what it is doing
to continue producing its crops during the drought.
1. How many acres
of production does your company have in California this year?

Paramount is farming more than 100,000 acres in 2014 with
a combination of citrus, almonds, pistachios and pomegranates.

2. How many acres
has your company taken out of production because of the drought?

We have managed to secure sufficient water for these
crops in 2014, but at very considerable expense. In some instances we are
applying less irrigation water than we would optimally prefer.

3. Has your
company ever faced the type of water restrictions it is facing in California
this year?

We have never faced water restrictions this severe in
California previously.

4. What is the
primary source of water for most of the crops your company is producing in
California?

Due to our size our water comes from a number of
different sources, including the State Water Project, exchange contractors and
the Kern River. In almost all instances, this water is supplemented by
groundwater which is being particularly heavily used in 2014.

5. What methods of
irrigation is your company using to water the crops? Were these the primary
irrigation methods prior to the occurrence of the severe drought conditions?

All our property is irrigated with drip or micro
sprinklers as it has been for more than the last 20 years. The drought has not
changed our methods of irrigation because we made the change to more efficient,
practical systems some years ago.

Paramount Farming Co. is farming more than 100,000 acres
this year with a combination of citrus, almonds, pistachios
and pomegranates.
6. During your
presentation at this year’s Seeley Summit you discussed how your company used previous
research to determine when specific plants need to be watered. Based on the
company’s findings, have you been successful at manipulating the water delivery
without having a negative impact on the plants?

We hope that we have timed the application of water,
especially in those crops where there has been reduced amounts, so that there
has been no negative effect on plants or yields. Although in determining the
schedule we have relied heavily on previous experiments conducted on our
property, this is obviously being done on a far greater scale and thus it is
not currently easy to assess either the long or short term effects.

7. During the
Seeley Summit you mentioned that some of the crops currently being grown in
Kern County, Calif., are unique to this region? Can you give some examples of
these crops and what is unique about the conditions under which they are grown?

In Kern County, where we have the majority of our
acreage, we share climate with the rest of the Central Valley in California
with some slightly greater extremes and different soil conditions. All these
environmental factors, which allow dormancy in the winter, but not usually
extreme low temperatures, and hot, dry summers, are particularly suited to the
production of pistachios, almonds, table grapes, carrots and citrus.

8. During the
Seeley Summit you discussed the Bay Delta Conservation Plan. Can you describe
what this plan is about?

Most precipitation in California occurs in the north of the
state while the majority of the usage, both urban and agricultural, occurs
south of the Sacramento-San Joaquin River Delta. One of the greatest challenges
that California has is how to move water through the delta to southern
California without environmental damage.

There is currently an ongoing process, otherwise known as
the Bay Delta Conservation Plan (BDCP), to move the point of diversion from the
south delta to the north delta and as part of the permits needed from the
federal wildlife agencies (U.S. Fish and Wildlife Service and National Marine
Fisheries Service) have a 50-year habitat conservation plan which would put an
end to the constant litigation of the delta. Our company is very interested in
this project and believes it is extremely important for the economic future of
the whole state.

Applications of reduced amounts of water to Paramount’s crops
are based on experiments conducted at the farm aimed at
avoiding any negative effects on the plants or their yields.

9. During the
Seeley Summit you expressed concerns that some agricultural trade associations
and other agricultural producers could be doing more to help ensure that
growers continue to have adequate water supplies. Could you please elaborate on
how you would like to see these groups become more involved with water-related issues?

I did express concern during the Seeley Summit that all
trade organizations do an adequate job of representing their members because
they do not always understand all the issues that they are being asked to
address. These organizations often spend too little time consulting their
members, especially when the organizations are covering a broad range of issues.
I do believe that all farmers of whatever size need to be conscious of this
fact and that unfortunately there is no substitute for their personal
involvement.
For more:
Paramount Farming Co., (661) 399-4456; http://www.paramountfarming.com.

David Kuack is a freelance technical writer in Fort
Worth, Texas; dkuack@gmail.com.

Visit our corporate website at https://hortamericas.com.

It’s time to become water-smart

As more growers look to install closed loop irrigation
systems, there is a need for treatment systems specifically tailored to handle
horticulture issues related to biofilm and disease control.

By David Kuack

 

The intense drought in California and continuing drought
in Texas along with their impact on the rising cost of food are making
government officials and the public painfully aware of the importance of having
and maintaining a reliable water supply. USA Today reports that California
produces nearly one-fifth of the United States’ entire agricultural output.
Should the state’s water woes continue the newspaper said farmers and
distributors may soon have to start looking for alternative locations to grow
or buy their crops.

Continue reading It’s time to become water-smart

Hydroponic Fodder Trial

With drought affecting much of the United States I was reminded of a method to produce fresh
feed for livestock with minimal input: hydroponic fodder.  Hydroponic fodder production is simply that,
growing livestock feed (barley, oats, clover, alfalfa etc.) hydroponically.  Generally speaking, production time of
hydroponic fodder is rapid.  Barley for
example can be ready to harvest in as little as 7 days!  A
grower can expect approximately seven pounds of fodder for every one pound of barley seed. Possible additional benefits of hydroponic fodder include higher meat and milk production and better heat cycles.  So,
the Hort Americas Research Division set out to grow barley seed under LEDs in a
recirculating hydroponic system. Johnny’s Selected Seeds has a wide selection
of seed.  Johnny’s has organic barley
seed available in a variety of bag sizes.  We
selected two, 5 lb bags for just under $9.75 per bag.  Fifty pound bags are also available.  There are other bulk seed suppliers and we will continue to compare product and pricing.

Barley seed in propagation trays.

Upon receipt, the seed was poured into the propagation trays
at a depth of approximately 1/2”.  The
drainage holes were plugged and the seed was submerged in water for 24 hr.  After 24 hr. the water was drained
from the trays and discarded.  After
draining the water, a half-strength nutrient solution was prepared using Kimitec
brand fertilizer (see below).  Lighting was initiated
at Day 1 using GreenPower LED Deep Red / Blue 120 Production Modules (DRB 120).  The DRB 120s were placed over the center of
each tray at 12” above the table.  A Li-Cor
quantum sensor and meter (LI-205A) was used to measure instantaneous light
intensity.  Light intensity was
approximately 70 µmol·m-2·s-1
and photoperiod was 18 hr.  This produced
a DLI of approximately 4 to 5 mol·d-1.  To maintain adequate moisture and provide nutrition,
the seeds were irrigated every two hours for 5 minutes.  Radicles were visible at Day 1.  After two days root formation was
obvious.  At Day 3 coleoptiles began to
form and a full strength nutrient
solution was applied to the plants.  By Day 4, the coleoptiles appeared to double
in length and the first leaves were visible.  At Day
5, leaves continued to grow and the root mat was well developed. Plants appeared to be ready by Day 6, but we decided to continue growing the barley
for 7 full days before harvesting.  On Day
8 the fodder was harvested and delivered to a local goat farm within 40
minutes.  We want to thank Katherine of Harrison Farm for expressing interest in this trial and for allowing us to bring the fodder to her goats.

So in summary:

  • Day 0:
    • Seed poured directly into hydroponic
      propagation trays at a depth of ½”.
    • Seed soaked in water for 24 hr.
  • Day 1:
    • Drained/discarded the water from the trays
      after 24 hr.
    • Began irrigating with a half-strength
      nutrient solution every 2 hours for 5 minutes:
      • 2 ml of Espartan per gallon of water
      • 2 ml of Amifort per gallon of water
      • 6 ml of Caos per gallon of water
      • 3 ml of Tundamix per gallon of water
      • 0.5 tsp of MgSO4 per
        gallon
    • Lighting provided to seeds via DRB 120s
    • One DRB 120 was placed 12”
      above the center of each propagation tray (three total).
      • Light intensity was
        approximately 70 µmol·m-2·s-1. 
      • Photoperiod was 18 hr.
      • DLI was between approximately 4 to 5 mol·d-1.
      • Energy consumption per DRB 120 is 35 Watts
        •  Daily energy consumption = 1.89 kW per day
        • Total energy consumption (7 days) =  12.23 kW
        • Local electrical rate = $0.08 USD per kWh
          • Daily lighting cost = $0.15 USD per day
  • Day 2:
    • Continued irrigation and lighting protocol
  • Day 3:
    • Nutrient solution was increased to
      full strength:
      • 4 ml of Espartan per gallon of water
      • 6 ml of Bombardier per gallon of water
      • 13 ml of Caos per gallon of water
      • 6 ml of Tundamix per gallon of water
      • 1 tsp of MgSO4 per
        gallon
  • Day 4 through 7:
    • Continued irrigation and lighting protocol
  • Day 8:
    • The fodder was harvested and delivered to a local
      livestock farmer within 40 minutes.

NOTE: Nutrient regimen was a trial. Basically, we used  recommended Kimitec fertilizer rates per gallon for coco slab growing and applied it via a completely soilless, recirculating system.  We will continue to adjust the nutrition and should we conduct tissue analysis, we will post the results.  We have selected to postpone the discussion comparing the cost per ton of hydroponic fodder versus cost per ton of hay/grain.  To be continued…

Keep growing and make it a great day!
Cheers,
Dr. B.

Day 1 – radicle emergence
Day 2 – root formation

Day 3 – coleoptile formation

Day 4 – coleoptile and first leaf formation

Day 4 – coleoptile and first leaf formation

Day 4 – barley under LEDs

Day 5 – root formation

Day 6 – first leaf well developed

Day 7 – ready to harvest

Day 8 – harvested and delivered = happy goats!

Visit our corporate website at https://hortamericas.com