Announcements

Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »




Urban Ag News:

Maximize your plants’ growth with supplemental CO2

If you are growing ornamental plants or vegetables in a controlled environment, including greenhouses, warehouses or growth chambers, carbon dioxide (CO2) could be considered another nutrient like nitrogen. Plants require carbon dioxide in order for the process of photosynthesis to occur enabling the plants to grow, flower and in the case of vegetables produce fruit.

“Ninety-nine percent of the plants that are grown for food or ornamentals in controlled environments would benefit from supplemental carbon dioxide,” said DuPont Pioneer research scientist Jonathan Frantz. “The outside ambient level of carbon dioxide is just over 400 parts per million. Once inside a greenhouse or other closed structure that contain plants, the plants start to draw down the carbon dioxide level. Depending on how much plant material is in the greenhouse and how tight the greenhouse is, the carbon dioxide level will be drawn down a lot. Warehouses and growth chambers are going to be tighter than greenhouses so the draw down is going to be faster in those types of structures.”

“Growth is adding mass,” he said. “Development rate is important in the timing of flowering. I’m interested in how carbon dioxide might accelerate that development rate.”

“In the case of low-value crops like lettuce, a grower is probably not going to want to inject a high level of carbon dioxide unless faster development rates are going to pay for themselves. For high value crops like herbs that are repeatedly harvested, it might be worthwhile to raise the level of carbon dioxide above 400 ppm.”

Frantz said there is a strong belief among some growers that their crops don’t need supplemental carbon dioxide or that their crops won’t respond to it.

Read more at Urban Ag News

Publication date: 6/1/2017

 


 

Other news in this sector:

8/18/2017 Which wavelengths of light are the most effective in photosynthesis?
8/17/2017 How to light your vining crops
8/17/2017 UK: Vertical farming a breeding ground for innovation
8/17/2017 Growing berries in retractable roof greenhouses and cooling houses
8/16/2017 Response of hot pepper yield to irrigation water salinity
8/14/2017 Ireland: €24 million available under European Innovation Partnerships Initiative
8/11/2017 These fibre pads claim to store and release ethylene on demand
8/11/2017 Chinese astronauts use the WET Sensor to help grow lettuce in space
8/11/2017 Horticulture NZ responds to freshwater discussion: “Let’s not do this”
8/10/2017 "Taxing water an issue for us all"
8/10/2017 USDA no longer speaks about "Climate Change"
8/10/2017 Combining downward and upward lighting improves plant growth
8/9/2017 Dr. Kubota's video lectures on photoperiod and CO2 now available at Urban Ag News
8/9/2017 LED Grow Book second edition now available
8/9/2017 UK: Survey to understand poor tomato pollination by native bumblebees
8/7/2017 NatureSweet to boost crop yields with new camera technology
8/7/2017 LumiGrow releases LED Growers’ Guide for Vine Crops
7/21/2017 US (FL): $3 million grant helps researchers look for new growing locations
7/21/2017 Photosynthetic responses of leafy veg to irradiance and CO2 concentration
7/21/2017 Production potential generates interest in Dutoli