Tea Mist Chamber

Text Transcript with Description of Visuals

Audio	Visual
Constructing a Greenhouse Mist Chamber, Washington State University	The title “Constructing a Greenhouse Mist Chamber” is displayed with the Washington State University logo beneath it. The title and logo are superimposed over a video panning overhead small tea cuttings planted in soil in square pots.
Chapter 1: Materials and construction	Heading: “1. Materials and Construction” superimposed on an image of a covered greenhouse mist chamber in a greenhouse.
PVC pipes: ¾ in. or 1 in. in diameter Base/top (width): pipe: 5 ft., Quantity: 7 Base/top (length): pipe: 3.5 ft., Quantity: 16 Vertical support, Pipe:3.5 ft., Quantity:10	Three PVC pipes laid parallel on a silver greenhouse bench. The topmost pipe is the longest, and the two bottom pipes decrease in length. Heading “PVC Pipes. ¾ in. or 1in. diameter” appears. The topmost and longest pipe is labelled “Base/Top Width, Pipe: 5 ft., Quantity: 7”. The middle pipe is labelled “Base/Top Length, Pipe: 3.5 ft., Quantity: 16.” The bottom and shortest pipe is labelled “Vertical support, Pipe: 3.5 ft., Quantity: 10”.
3-way tee shape pipe fitting: 6	The white heading reads “3-way tee shape pipe fitting × 6”. A hand places a T-shaped pipe fitting on a silver bench.
3-way 90-degree pipe fitting × 8	The white heading reads “3-way 90-degree pipe fitting × 8”. A hand places a 90-degree pipe fitting on a silver bench.
4-way tee shape pipe fitting × 6	The white heading reads “4-way tee shape pipe fitting × 6”. An image of a 4-way tee fitting appears on a silver bench.
1. Clean off greenhouse bench and measure the width and length	An empty silver metal greenhouse bench. The white heading reads “1. Clean off greenhouse bench and measure the width and length.”
Length 14 ft., Width 5 ft.	White word “Width” appears on shorter end of bench. White word “Length” appears on the longer end of the bench. The white word “5 ft.” appears next to “Width”. The white word “14 ft.” appears next to “Length”.
2. Place PVC pipes along length and width	An empty metal greenhouse bench. A white heading appears reading “2. Place PVC pipes along length and width”. A white PVC pipe appears at each end width of the bench. Four lengths of PVC pipes appear along each length of the bench.
3. Insert 3-way 90-degree fittings to each corner	All bottom PVC pipes remain on bench. White heading reads “3. Insert 3-way 90-degree fittings to each corner”. An image of a white 90-degree pipe fitting appears under the heading. The four corners of the bench are circled with a red circle. A video of a corner of a metal greenhouse bench with a 3-way 90-degree pipe fitting placed in the corner. Two PVC pipes are connected to each end of the pipe fitting, leaving the vertical hole of the pipe fitting empty.
4. Insert 3-way tee shape fittings along the length	All bottom PVC pipes appear on the metal greenhouse bench. Heading reads “4. Insert 3-way tee shape fittings along the length”. An image of a white T-shaped pipe fitting appears under the heading. Three red circles appear on each side of the length of the bench where the PVC pipes connect. A video of the edge of a metal greenhouse bench. A 3-way tee shape pipe fitting is placed against the edge of the greenhouse bench. Two hands connect two white PVC pipes to each end of the pipe fitting, leaving the vertical hole of the pipe fitting empty.
5. Attach vertical support pipes	All bottom PVC pipes appear on the metal greenhouse bench. Heading reads “5. Attach vertical support pipes”. Four vertical white PVC pipes appear on each corner of the greenhouse bench. A video of a corner of a metal greenhouse bench with a 3-way 90-degree pipe fitting attached to two PVC pipes. A hand places another white PVC pipe in the vertical hole of the pipe fitting. All bottom PVC pipes and four vertical PVC pipes appear on the greenhouse bench. The white heading reads “5. Attach vertical support pipes”. Six white PVC pipes appear, three on each length of the bench where the bottom PVC pipes connect. A video of the edge of the metal greenhouse bench with a 3-way tee shape pipe fitting attached to two PVC pipes. A hand places another white PVC pipe in the vertical hole of the pipe fitting.
6. Insert 90-degree 3-way fittings	All bottom and vertical PVC pipes appear on the greenhouse bench. White heading reads “6. Insert 90-degree 3-way fittings”. An image of a 3-way 90-degree pipe fitting appears in the top right corner. Four red circles appear on the tops of the four corner vertical PVC pipes. A video of the top of a vertical white PVC pipe. A hand places a 3-way 90-degree pipe fitting to the pipe, with the two 90-degree holes facing out without PVC pipes attached.
7. Attach 4-way tee pipe fittings	All bottom and vertical PVC pipes appear on the greenhouse bench. White heading reads “7. Attach 4-way tee pipe fittings”. An image of a 4-way tee pipe fitting appears in the top right corner. Six red circles appear, three on the tops of each pipe along each length.
8. Attach top width PVC pipes	The 4-way tee pipe fitting image and circles disappear. A white heading reads “The 4-way tee pipe fitting image and circles disappear. A white heading reads “8. Attach top width PVC pipes”. Two upper PVC pipes appear, one along each end width of the bench.c”. Two upper PVC pipes appear, one along each end width of the bench.
9. Attach top length PVC pipes	A white heading reads “9. Attach top length PVC pipes”. Eight white PVC pipes appear along the top of the vertical length pipes, four on each side.
10. Attach top width pipes	A white heading reads “10. Attach top width pipes”. Three white PVC pipes the same length as the width pipes appear along the connections of the vertical length pipes. A video of a completed greenhouse mist chamber. The side of the mist chamber is shown, with the coverings pulled back halfway to show the internal PVC pipe structure. A pan of the side of the mist chamber moves to a view of the length of the mist chamber, with crates of tea plants placed inside.
2. Misting	The inside of a covered mist chamber. Crates of tea plants are beneath four rows of black mist irrigation lines running down the length of the mist chamber. The heading reads “2. Misting”.
Misting Tubing Kit with misting nozzles and adaptors, ¼ in. tubing size. Length: 82ft., Spacing: 14.5 in.	A view of the top of the mist chamber and irrigation lines. The black misting nozzles are spraying a fine mist. The white heading reads “Misting Tubing Kit with misting nozzles and adaptors, ¼ in. tubing size”. A mist nozzle spraying a fine mist. The white heading reads “Length: 82ft. Spacing: 14.5 in.”.
Wrap misting tubing along end width pipes. Create 4 rows of misters along chamber	A pan video of four rows of misting tubing running along the top of an uncovered misting chamber. A black heading in a semi-transparent white oval reads “Wrap misting tubing along end width pipes”. Another black heading in a semi-transparent white oval reads “Create 4 rows of misters along chamber”.
Attach misting tubing to width PVC pipes with zip ties	An image of four rows of misting tubing draped over a top width PVC pipe. Each tube is attached to the PVC pipe with a black zip tie. A black heading in a semi-transparent white oval reads “Attach misting tubing to width PVC pipes with zip ties.
Cut and plug the end of the misting tubing	The end of the misting tubing draped across an end width PVC pipe. A black heading in a semi-transparent white oval reads “Cut and plug the end of the misting tubing”.
Secure end of misting tubing to a corner support pipe closest to water source	A greenhouse mist chamber with the plastic coverings pulled halfway back, revealing the irrigation lines running along the top of the chamber and the PVC pipe structure. The white heading reads “Secure end of misting tubing to a corner support pipe closest to water source”. A white arrow points to the black misting tubing running down a vertical corner pipe to the greenhouse bench.
Attach end of misting tube to the programmable misting timer. Attach misting timer to hose connected to greenhouse faucet	An image of a blue greenhouse mist timer superimposed on a blue-gray background. A white heading on the lower screen reads “Attach end of misting tube to the programmable misting timer.” A white arrow points to the bottom of the misting timer where the black misting tubing is attached. A white heading appears on the top of the screen reading “Attach misting timer to hose connected to greenhouse faucet”. A white arrow points to the top of the misting timer where a hose is attached.
Model: Mist timer II, Times in Seconds, model number #549, 1 per bench	On the same mist timer image and background, a white heading reads “Model: Mist timer II, Times in Seconds, model number #549, 1 per bench”.
Program: 30 seconds of misting every 1 hour	On the same mist timer image and background, a white heading reads “Program: 30 seconds of misting every 1 hour”.
Maintain a relative humidity of around 65%	The inside of a mist chamber with a fine mist coming from the irrigation line and landing on the tea plants. The white heading reads “Maintain a relative humidity of around 65%”.
3. Electronics	The inside of a mist chamber looking down the length of it, covered in plastic. Tea plants in pots in crates line the length of the mist chamber. The heading reads “3. Electronics”.
Seedling Heating Mats. Jump Start Seedling Heat Mat, 20 × 48 in. Quantity: 7 mats (depending on bench dimensions)	Three black rectangular seedling heating mats placed side by side along the width of the greenhouse bench in the mist chamber. The heading reads “Seedling Heating Mats”. The subheading below reads “Jump Start Seedling Heat Mat, 20 × 48 in. Quantity: 7 mats (depending on bench dimensions)".
Waterproof power strip, 8 outlets, 1 per bench. Attach to bench with zip ties and plug in seedling mats	A white power strip attached to the bottom side of a silver metal greenhouse bench. Black plugs are plugged into the power strip. The white heading reads “Waterproof power strip, 8 outlets, 1 per bench”. The subheading reads “Attach to bench with zip ties and plug in seedling mats”.
4. Covering the mist chamber	The outside of the mist chamber is covered in greenhouse plastic and layers of white row cover covering the top of the mist chamber. The white heading reads “4. Covering the mist chamber”.
Clear greenhouse plastic. Size: 14 × 22 ft. (Cover the entire mist chamber with slight overhang)	Folded clear greenhouse plastic on a metal greenhouse bench, superimposed on a blue-gray background. The white heading reads “Clear greenhouse plastic”. The white subheading reads “Size: 14 × 22 ft. (Cover the entire mist chamber with slight overhang)". A white arrow points to the folded greenhouse plastic and labelled “6-millimeter”.
Agribon + AG-50 row cover. Size: 83 in. × 50 ft. (measure to cover the top of chamber)	On the same blue-gray background, an image of a folded white row cover on a metal greenhouse bench. The white heading reads “Agribon + AG-50 row cover”. The white subheading reads “Size: 83 in. × 50 ft. (measure to cover the top of chamber)”.
Place 4 layers of row cover on top of mist chamber. Leave an overhang of about 1 ft.	On same blue-gray background with image of white row cover, the white heading reads “Place 4 layers of row cover on top of mist chamber. Leave an overhang of about 1 ft.”.
Secure corner with clips	A corner of the covered mist chamber. The corner plastic and row cover are secured by two large black paper clips. The white heading reads “Secure corner with clips”.
Coverings create a shaded environment with a PAR of 35-40 µmol	A view of the width end of the mist chamber with the coverings pulled up, revealing the inside of the covered mist chamber. The white heading reads “Coverings create a shaded environment with a PAR of 35-40 µmol”.
Greenhouse settings, Temperature: 70°F, Lights: on during daylight hours	An overhead pan video of small tea cuttings planted in soil in square pots. Black letters over white semi-translucent ovals read “Greenhouse settings, Temperature: 70°F, Lights: on during daylight hours”.
Use what you have! A mist chamber can be constructed in many ways. Scan for detailed instructions	A white semi-transparent rectangle over an image of large tea leaves. The headings read “Use what you have! A mist chamber can be constructed in many ways. Scan for detailed instructions”. A QR code is located beneath the heading. 4 logos from Western SARE Sustainable Agriculture Research & Education, WSDA Washington State Department of Agriculture, Northwestern Agricultural Research Foundation, and Washington State University appear over a white rectangular background, superimposed over an image of small tea plantings. In small black lettering, it reads “This work is supported by the Washington State University Emerging Research Initiative program, the National Institute of Food and Agriculture, U.S. Department of Agriculture Western Sustainable Agriculture Research and Education program (project number G123-25-WA509), Hatch Project 7005372, Washington State Department of Agriculture Nursery Grant, and the Northwest Agriculture Research Foundation. Any opinions, findings, conclusions, or recommendations are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture”.