Announcements

Job offersmore »



Tweeting Growers

Top 5 - yesterday

  • No news has been published yesterday.

Top 5 - last week

Top 5 - last month

Exchange ratesmore »




Nutrient management for hydroponic lettuce using imaging

Hydroponic lettuce is usually grown by continuously recycling the nutrient solution during production. As nutrients are absorbed by plant roots, stock solution is added to the recycled solution to maintain the electrical conductivity (EC) at a target level.



Because plants absorb nutrients from the solution at different rates, the recycled solutions accumulates elements which are slowly absorbed by the roots overtime. Therefore, periodic draining of the recycled solution is recommended to avoid negative effects on plant growth and quality.



The research addresses two questions: (i) what is the effect of accumulated fertilizer salts on the plant growth of lettuce and (ii) is there a benefit of adjusting EC of the nutrient solution based on plant growth rate and water use as opposed to maintaining a target EC, and (iii) what is the best way to adjust nutrient solution concentration without impacting plant growth and with minimal environmental impact.

Source: Purdue University (Krishna Nemali)

Publication date: 8/30/2017

 


 

Other news in this sector:

6/22/2018 US (CA): Creating online training for organic specialty crop production
6/21/2018 US (MI): "Low tunnels do not have the desired effect this year"
6/21/2018 US (CA): Growers in berry country get innovative to save water
6/21/2018 Flying greenhouse from Bremen goes into space
6/20/2018 Bas Vet new cultivation adviser
6/19/2018 Climate & Food Security programme in Kenya, Tanzania and Uganda
6/19/2018 US: Low Tunnel Strawberry Production Guide released
6/18/2018 Energy-efficient practices in organic greenhouses
6/18/2018 "I feel confident we can grow Gina consistently for many years"
6/15/2018 "Early production runs ahead when eggplant plants are topped"
6/15/2018 How to impact a crop's vertical temperature profile
6/14/2018 Kazakhstan: Drip irrigation indispensable in agriculture
6/14/2018 UK: AHDB launches farm data sharing project
6/14/2018 India: HollandDoor launches new three-year horticultural programme
6/13/2018 US (TX): Helping tomato producers make better connections through grafting
6/13/2018 "Environmental changes could reduce global production of vegetables"
6/13/2018 Kyrgyz president visits Chinese ag academy
6/13/2018 Enhanced growing system with new gutter type
6/8/2018 "Create value with your own data"
6/8/2018 St. Lucia: Growers learn about greenhouse tomato cultivation