Commercial Hydroponic Farming |

Here is a quick way to identify macro-nutrient deficiency and toxicity symptoms

NITROGEN Toxicity Symptoms Plants are dark green in colour with excessive amount of foliage Root growth is restricted Reduced flowering and seed production Plants wilt...

May 14

1

by Antonius Lecuona

Hydroponic fertilizers explained

Plants consist of 80-95 % of water, depending on specie, less than 15-20 % percent consists of carbon (C), oxygen (O) and hydrogen (H). The...

May 11

3

by Antonius Lecuona

Water pH Explained

Nutrients
pH

Water pH is a mathematical term to denote degrees of acidity or alkalinity and is expressed by a series of positive numbers between 0 and...

May 11

1

by Antonius Lecuona

water quality hydroponics nutrients fertigation

Salt content of water for hydroponic use

Salt content is one of the most important factors that should be evaluated before designing a hydroponic production system. It has been found that yields...

May 11

2

by Antonius Lecuona

Greenhouse heating – 5 facts you should look at

Greenhouse heating can be very expensive, especially if you greenhouse is not optimally set up for heating. There are factors that can be taken into account in...

May 7

1

by Antonius Lecuona

Micro-elements – It’s role in plant growth

Micro-elements are quite often referred to as the “trace” elements since they are used in such minute quantities in the nutrient solution. Micro-elements tend to...

May 5

2

by Antonius Lecuona

Sulphur (S) – It’s role in plant growth

Sulphur (or sulfur)is also known as the “ignored primary nutrient” since not many people realize that it is one of the macro nutrients and is...

May 5

2

by Antonius Lecuona

Magnesium (Mg) – It’s role in plant growth

Magnesium was discovered by Nehemiah Grew in 1695 by evaporating mineral waters in Epsom England. It was only in 1808 that Sir Humphrey Davy isolated...

May 5

2

by Antonius Lecuona

Calcium (Ca) – It’s role in plant growth

On average, more growers have calcium (Ca) related problems than any other nutrient. These problems occur in areas of low humidity and high temperatures. Calcium...

May 5

2

by Antonius Lecuona

Potassium (K) – It’s role in plant growth

Potassium is the most abundant monovalent cation in plant tissue. It is highly mobile which explains why deficiency symptoms can occur so rapidly. The concentration...

May 5

2

by Antonius Lecuona

Phosphorus (P) – It’s role in plant growth

Phosphorus (P) was first discovered by Hennig Brandt in Germany in 1669. It is ironic that the discovery was made when he was busy with...

May 5

1

by Antonius Lecuona

Nitrogen – It’s role in plant growth

Nitrogen is consumed in large amounts by the plant. Nitrogen is used in components such as amino acids all proteins enzymes co enzymes nucleic acids...

May 5

2

by Antonius Lecuona

How to adjust the pH in hydroponic nutrient solutions

Nutrients
pH

Adjusting ph of the water supply is crucial for maximum nutrient availability. It is seldom that the water supply, even from a well, is perfectly...

May 5

1

by Antonius Lecuona

pH in hydroponic nutrient solutions and its effect on nutrient uptake

Nutrients
pH

What is pH pH is the measurement of acidity or alkalinity of a solution. It is based on a logarithmic scale and starts at 0...

May 5

1

by Antonius Lecuona

Calculating pad and fan requirements

The effectiveness of a pad and fan system will not only depend on the design, but also on the wet bulb temperature outside the greenhouse....

May 5

1

by Antonius Lecuona