Cooling & Ventilation Supplies|
Poly Film Greenhouse Covering
TOP SPRAY AUTOMATIC GROWING SYSTEM FOR VERTICAL BAG CULTURE
|The vertical bag culture growing system developed by Hydro-Gardens is adaptable to any size greenhouse. Many different combinations of timers,
injectors or nutrient holding tanks can be used. The basic system includes 5 gallon black
growing bags with a sprayer in each bag. The sprayer has 24" spaghetti tube which
connects to a 3/4" or 1" poly pipe nutrient line running the length of the
greenhouse. The spaghetti line is inserted into the poly line with a simple punching tool.
No glue or grommets are required.
A 24 volt automatic valve in the center of each zone
(single or multiple rows) is attached to an underground PVC header pipe which runs across
the width of the greenhouse. A PVC tee is placed in the header line for each automatic
valve and is connected to the poly line with a poly combination tee. Since the valve is
normally closed until energized by the control device, the header line is always under
pressure (30-50 psi). Each zone is fed individually as programmed and activated by the
Solar Irrigation Controller, or activated by the sequence timer.
The nutrient supply system (injector, pump, etc.) is designed according to the size of
the greenhouse and type of crop to be grown. For example, a typical 5 row greenhouse only
needs the Solar Controller. A 24 zone greenhouse may also need a 24 station timer. Using a
sequence timer to feed one row at a time may be less expensive than increasing the
injector size to water multiple rows. If a large nutrient holding tank is used with a pump
sufficient to feed all rows at one time, then a sequence timer is not required. However,
it is apparent that an injector and solar controller system is far more practical, less
expensive, and requires less space than installing large nutrient tanks.
The selection of the injector system and control device(s) is an important part of the
overall design. Certain factors must be known: 1) the number of zones, 2) the number of
feeders per zone, 3) the water volume available to the greenhouse, and 4) the water
quality. Hydro-Gardens offers designs for any size greenhouse and any major type of crop.
Solid state timers are available in an assortment of numbers of stations. The timer can be
activated by the solar controller which measures available sunlight. You adjust the solar
controller to water the plants only when they are receiving adequate sunlight. Solar
controller models with 3 and 12 stations are available.
Hydro-Gardens offers three types of injectors. The Anderson and Dosmatic
Injectors are driven and controlled by water volume. The less expensive Chem-Feed
injectors are driven by an electric motor. All provide the function of changing our
Chem-Gro fertilizers from the concentrated form into a plant usable fertilizer by metering
out the correct amount of concentrate into the water supply line.
Anderson and Dosmatic injectors are designed to handle variable flow rates of water.
There are sizes with maximum water flow rates of 20, 30, 50 and higher gallons per minute
(GPM). They operate accurately anywhere from 1 GPM to their maximum. The dial on each pump
head of the Anderson water driven injector is easily adjustable to deliver the desired
quantity of concentrated fertilizer to the fresh water supply line going to your plants.
The pumping action of the pump heads is controlled by the water motor. Each Dosmatic is
individually adjustable with dosage rings, and uses a piston to deliver
value of both injectors is the fact that each delivers the correct volume of fertilizer
concentrate over a wide range of fluctuating water pressures and volumes. These injectors
are very accurate, dependable, and completely automated. More specifications can be found
in the pages of this catalog.
The Chem-Feed injector is an electric motor driven pump that delivers a constant flow
of fertilizer concentrate to the fresh water supply going to your plants based on the dial
setting on the face of the pump. Its accuracy is totally dependent on the volume of
fresh water delivered to the plants. If your fresh water system cannot deliver a constant
volume of water, you will not be able to accurately adjust the pump to deliver the correct
amount of fertilizer concentrate. The Dole 10 GPM regulator adjusts flow rates that are
greater than 10 GPM, down to 10 GPM. The maximum number of sprayers per zone is about 140.
Thus the Chem-Feed system is dependent upon having a constant PSI and water flow. For this
type of injector system all individual rows (zones) of plants must have the same number of
sprayers. This will guarantee equivalent dilute solutions to each row (zone).
It should be apparent that a properly engineered design can have long term labor and
operating cost savings and can enhance your crop production. Hydro-Gardens
has the experience required, and will be glad to design a system for your needs.
BAG CULTURE GROWING SYSTEMS FOR VEGETABLES AND FLOWERS
|The top spray feeding system was developed in
1972 by Hydro-Gardens for controlled watering and feeding of
plants in vertical bags. The Vertical Bag System utilizes a 5
"gallon" (20 liter) upright plastic bag with drain
holes. Hydro-Gardens’ plastic bags are inexpensive,
lightweight, and will last several years. Our bags are
manufactured from a specially formulated plastic that contains
ultra-violet light inhibitors. They easily outlast plain plastic
bags. They are extremely flexible and adaptable to many plants
including tomatoes, European cucumbers, peppers, roses and
trees.In 2004 Hydro-Gardens developed the EZ
Gro Bags. These are 5 gallon bags pre-filled with coir.
Simply put your sprayer/dripper in the bag, turn on the water,
and now you have a vertical bag system ready to go. This new
design is much more labor efficient and helps the growers to cut
Click Here to see pictures.
Each container is watered with a
uniform pattern of nutrient solution for a very short period of time, usually one minute
every 1 to 2 hours during the daylight period for mature crops. The amount of irrigation
time and the frequency depend on the crop, variety, age of the plant, season of the year,
and type of growing media used. Each vertical container has drain holes in the bottom.
When the nutrient solution is properly adjusted, plants can seldom be over watered or over
Fertilization is simplified tremendously by the use of a very accurate injector (ratio
feeder) in conjunction with our solar irrigation controller or a sequence timer/solar
controller combination. The amount of nutrient is carefully regulated automatically by
volume and concentration to each plant. The pH is automatically maintained in the proper
range with the injector system.
Since every greenhouse cannot have a testing laboratory, it is necessary to start with
standard feeding schedules and standard formulas. First, a water sample should be taken
and sent to a reputable laboratory to verify essential and non-essential levels of
elements in your water source. Once the plant is large enough to take a leaf sample, the
nutritional balance can be monitored and small changes can be made as the plant matures.
The important factor of this system is that one can regulate the nutrition being applied
to the plants with very little labor. The results are rapid since the nutrients are placed
right at the root zone. In the bag system, the roots are contained, and each plant is fed
uniformly and equally every time. Under these conditions, the plants achieve maximum
growth if the environment is controlled. The bag system is safe, simple and creates an
ideal environment for the root system. Root zone temperature can be maintained at a higher
level than if grown in the greenhouse soil.
Many growing medias are used with the vertical or bag system.
One of the most popular is the EZ
Grow 5 Gal Bag coconut fiber/perlite blend. This mixture is
ideal since it is pH adjusted, has good water and nutrient
holding capabilities, and remains porous enough to maintain good
aeration of the root zone. Some of the more common medias being
** 100% coconut fiber (EZ
Gro Bag - COIR)
** 70% EZ Gro Bag - COIR,
30% coarse perlite
** 100% peat-lite mixtures; such as Pro-Mix BX
** 40% peat-lite w/ 60% sawdust, sand or rice hulls
** 40% peat moss, 40% vermiculite and 20% perlite
** 40% peat moss, 40% vermiculite and 20% sand
** Rockwool/COIR mixtures
** Rockwool/peat-lite mixtures
** Rockwool/peat mixtures
** 30% peat moss and aged, coarse sawdust
** Straight aged redwood sawdust
** Coarse washed stucco grade sand
** Aged pine bark
NOTE: Many other media combinations may work well when used in conjunction with the
proper nutrient concentrations and watering schedules. Send a sample to one of the testing
labs listed in this catalog.
VERTICAL BAG LAYOUT
|5 Rows of 79 Bags --
790 Tomato or 395 Cucumber Plants
||Dosmatic Superdos 20 2.5% Injector
||Dosmatic Superdos Downstream Bypass
||Injector Plumbing Kit
||Nutrient Concentrate Tanks
||Solar Irrigation Controller - CEA
||Spray Stakes with 24" feeder line
||Coconut EZ Gro Bags
||1" Solenoid valves
||Solenoid valve plumbing kits
3/4" X 1" End
||Solenoid valve plumbing kits
3/4" X 1" Middle
||3/4" x 500' roll of black poly pipe
||Punching tool for installing sprayer lines
||Poly Pipe Hose Cutter
|This growing system is designed for greenhouses that are
about 4,000 sq. ft. (A greenhouse that measures 30' x 132'). It utilizes the latest in
technology to get the nutrient solution to the plants' root zone accurately and timely.
You save money by purchasing your growing media locally. This system is easily expanded to
accommodate larger greenhouses by adding more grow bags and sprayers.
||System w/ CEA Grower
|Convert your present NFT or flood-bed system to the more
economical, more profitable Top-Spray growing method. This system greatly reduces
down-time between crops, eliminates the spread of water borne diseases, eliminates the
need to daily adjust the pH and nutrient concentration of the sump tank, and actually uses
less water and fertilizer than your present NFT/flood-bed system. Read the information on
the previous pages to learn how other growers have increased their production and lowered
their costs by eliminate the need to dump their sump tank solution!!
Sump tank at the end of the greenhouse
All items listed plus:
6W576 5 1"x3/4" Insert coupling
6W533F 5 3/4" PVC MIPT Cap
6W539 5 1" Insert male adaptor
||w/ Adjustable Timer
||w/ Solar Controller
Sump tank in the middle of the greenhouse
All items listed plus:
6W541 5 1" Insert combo "T"
6W534F 10 1" PVC MIPT Cap
6W539 10 1" Insert male adaptor
||w/ Adjustable Timer
||w/ Solar Controller
||24-hour Adjustable Cycle controller
||OR Solar Irrigation Controller
||Sprayers with 24" feeder line
||Heavy duty 5-gallon black poly bags
||Punching tool for installing spray tubes
||1-1/2" male PVC pipe adaptors.
||1-1/2'' SPIG x 1" FIPT PVC bushing
||1-1/2'' PVC tee
||1-1/2" PVC elbow
||Set installation instructions
|NOTE 1: 600' of 1" black poly pipe, 80 PSI; 40' of 1
1/2" PVC pipe and PVC glue to be purchased locally. (Item 6W700 requires 300' of
1" and 300' of 3/4" black poly pipe.)
NOTE 2: This conversion utilizes your existing sump tank and pumps. The tiny amount of
return water from the beds should be prevented from returning to the sump tank. Once this
return water is eliminated, the nutrient solution in the sump tank will not vary as it is
fed out to the plants. This eliminates the need for daily adjusting of pH and
NOTE 3: The total sump pump capacity required is approximately 4600 GPH. If your present
system has one 2750 GPH (6CIA) pump, another pump this size will be required. Each pump
requires an in-line check valve to maintain line pressure and prevent drain back to the
NOTE 4: PVC fittings are available for the pump to header line assembly.