Announcements

Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »




How much acid is needed to reduce water alkalinity?

To limit the upward climb of your growing medium's pH, acid may need to be injected into your water to reduce excess alkalinity. Water alkalinity is a measure of the carbonates and bicarbonates in the water and acts just like limestone in the growing medium.

The higher the alkalinity, the more “limestone” that is applied at each irrigation and the faster the pH of your growing medium increases. So, at what point is it necessary to inject acid into a water source to reduce alkalinity?

Why is the growing medium's pH rising?
As plants uptake fertilizer, the roots release acids (hydrogen ions) and bases (hydroxyl ions) to maintain a neutral charge within the plant's roots. This is why fertilizers are labelled with a potential acidity or basicity that predicts how the plant will react with the fertilizer.

When the plant cannot generate enough acid from fertilizer uptake to neutralize the water alkalinity in the growing medium, this causes the growing medium's pH to climb. Therefore, acid injection is needed to neutralize excess water alkalinity or “limestone” in the water.

Read more at the PRO-MIX website

Publication date: 1/10/2017

 


 

Other news in this sector:

9/13/2017 Plant-Prod introduces Duo-Tote
9/7/2017 US (UT): Decreasing fertilizer use with nanotechnology
9/6/2017 ‘Circular’ fertiliser: from Africa to the Netherlands and back
8/30/2017 Agrium acquires 20 Ag-retail locations in GA and FL
8/22/2017 Turkish investor starts organic fertiliser production in Zambia
8/18/2017 Turning pollen into a low-cost fertilizer
8/18/2017 Canada: Plant-Prod stays ahead of regulatory requirements
8/17/2017 Predicting nitrogen release from parabolic-type resin-coated urea
8/16/2017 Biostimulants to grow tomatoes in high temperature conditions
8/9/2017 Increased electrical conductivity in nutrient solution benefits tomatoes
7/19/2017 "pH should stand for plant health"
7/17/2017 The problem of high soluble salts in high tunnels
7/17/2017 RainSoil debuts new substrate enhancer at Cultivate
7/12/2017 US: California will use toilet water to grow vegetables
7/12/2017 Human urine better than fertiliser, expert says
6/22/2017 CAN (ON): Fuel prices up, fertilizer down
6/22/2017 UK: Soil testing key to realising the value of healthy soils
6/20/2017 Sumitomo Chemical and BASF collaborate to develop new fungicide
6/20/2017 China pushes new fertilizer-replacement program
6/13/2017 Toxic nitrogen forms in fresh organic growing media?