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:

4/20/2018 Composting the full crop at the end of the season
4/20/2018 India: Nilgis growers trained on advanced horticultural technologies
4/19/2018 South Africa: Unlimited possibilities to produce in greenhouses
4/18/2018 Distantly related crops are not better rotation partners for tomato
4/16/2018 Real time soil testing in Zambia
4/16/2018 “Far-red light boosts tomato yield”
4/13/2018 Plants 'hedge their bets' in germination
4/12/2018 UK: Cambridge and four other universities form agritech partnership
4/12/2018 El Niño affected two-thirds of the world’s harvests
4/12/2018 Next Generation Growing 2.0: no inner rot in peppers
4/10/2018 New Mid-Atlantic Commercial Vegetable Production Recommendations available
4/6/2018 "Water essential to feed New Zealand"
4/6/2018 Canada: New World crops online resource now available
4/4/2018 Australian experts to help Indian growers go soilless
4/3/2018 "Jordan growers can grow anything they want"
4/3/2018 Dutch restaurant has rooftop greenhouse with LED-lighting
3/30/2018 France: Greenhouse shading enhances lamb’s lettuce productivity
3/29/2018 "Hydroponic cultivation not an option for specialty crops"
3/29/2018 California strawberry production off and running
3/27/2018 Peru: Tecnova helps boost greenhouse agriculture