Garden & Greenhouse


Trichoderma Species Used as Biofertilizers

There are several species of Trichoderma fungi that are used as biofertilizers. Trichoderma has many benefits in farming, agriculture and home gardening.

Trichoderma Fungi

Trichoderma species are the most prevalent type of fungi in soils and they are present worldwide in almost all soil types. They are microscopic and are generally considered virulent plant symbionts. In other words, they form a symbiotic, or mutually beneficial, relationship with plants. This symbiotic relationship is what biofertilizers try to exploit. The idea is simple, by adding more Trichoderma the plant receives more benefit.

Benefits of Trichoderma

  • Trichoderma generally increase both root and shoot growth
  • Improves the nutrient status of the plant
  • Production of growth promoting hormones
  • Phosphate solubilization
  • Increased uptake of minerals such as Cu (copper), Fe(Iron), Zn (Zinc), and Na (Sodium)

Trichoderma Species Used as Biofertilizers

Most of the Trichoderma species listed here provide the benefits from above. I’ll talk a bit about the additional benefits of some of the fungi. It’s important to note that Trichoderma applications can be made as seed treatment, as a foliar treatment, or as a drench treatment.

Trichoderma harzianum

Increases plant tolerance to environmental factors like drought and high soil salinity. T. harzianum increases mineral absorption.

Trichoderma viride

When it is used as a seed treatment, increases the germination rate in a number of crops.

Trichoderma reesi

This Trichoderma has the ability to secrete large amounts of cellulolytic enzymes and has a number of uses in biotechnology. In fact, it is used to create stone washed jeans because of this ability.

Trichoderma koningii

Known to increase the growth of seedlings and secretes seed germination factors.

Trichoderma polysporum

Normally found in cooler climates, this Trichoderma conveys all of the benefits associated with the other Trichoderma fungi.

For many soils, some type of combination of the above methods may be the best option.

Bill Baugh is a product manager for Custom Biologicals, Inc. a manufacturer and distributor of innovative microbial products. You can visit their website at and he can be contacted at 561.797.3008 or

Read More Articles

Beneficial Microorganism Overview

Organic Hydroponics and Bacteria Growth

Sterile Growing Media Could Become a Source of Bacterial Problems

Understanding Fungi, Bacteria and Beneficial Biology

Free Subscription to Garden & Greenhouse Magazine

Free Subscription to Garden & Greenhouse Email Newsletter