Sunday, May 22, 2011

Guano (Bat and seabird manure)


  • Guano fertilizer
  • Source
  • Nutrients
  • Benefits
  • Fertilizer forms
  • N.P.K. Analysis
  • Application Rate

The definition of the word guano varieties depending on which reference source you consult. One source suggests the word derived from the Quichua language of the Inca civilization and refers to the droppings of seabirds. While another implies it is from the Quichua language of the Inca civilization and that it refers to, feces and urine of seabirds, bats, and seals.
Regardless of the correct interpretation of the word it has been integrated into our language to refer to both seabirds and bats and is one of the finest natural fertilizers available on the market today.

Guano is collected from natural deposits of seabirds and bat droppings in areas where favorable climatic conditions insured a minimal loss of nutrients through leaching. Either from seabirds in coastal areas with minimal rainfall, or in the case of bats, from inside caves where climate has little or no effect on the guano deposit.

Guano contributes more than its share of nutrients to the soil. Both the bat and seabird guano are an exceptionally rich source of natural nutrients that supplies many beneficial enzymes and bacteria, large amounts of minor and trace minerals as well as being high in nitrogen and phosphorus.
Guano can vary greatly in the levels of N.P.K. and trace minerals and is dependent on many factors including, environment, mineral composition of the land or cave of the deposit, food source of the animal and age of the guano deposit. So as with other animal manures a chemical analysis of guano, is only a general approximation of the nutritional plant food value.

In addition to everything else bats droppings go through a process of natural decomposition aided by guano beetles and decomposing microbes, which help control many soil-borne diseases. These microbes help to break down any toxins in the soil and act as a natural fungicide when it is fed to plants via their leaves. It is these same properties of guano that also makes it an excellent compost activator.
The end result is a natural organic fertilizer that improves the natural balance of the soil, building and conditioner the texture and friability of it without increasing either salt content or acidity. Guano fertilizer is considered to be one of the top sources of organic nutrients available for vegetable gardeners today.

Guano usually comes to the gardener in the forms of powder, pellets or liquid. It can be applied as a top dressing and worked into the soil, mixed with water and applied as a foliar spray or injected into an irrigation system.Guano supplies both fast and slow release nutrients to the soil biological system.
As with all natural manures guano will need time to break down the nutrients into the soluble inorganic form needed for plants. Although guano fertilizer is one of the fastest manure to breakdown the amount of micro bacteria in your soil will have a bearing on the time this takes. Pure guano is applied in much smaller amounts than ordinary barnyard or poultry manure.

Guano Tea
To make guano tea for feeding plants, add 1 cup of guano powdered fertilizer to 1 gallon of water. Mix thoroughly and let stand for 24 hours. Strain the solids out and apply tea at 1 - 2 cups per plant. For larger plants apply 2 - 4 cups of tea. As with comfrey tea don’t waste the residue, use it to mulch around the root zone of established plants.


Guano Bat high N103.01.0
Guano Bat high P3.0101.0
Guano Seabird high N128.01.0
Guano Seabird high P1.0101.0
The large variations in the N.P.K content in guano from the different sources allow guano to be process for either high nitrogen or high phosphorus levels. Guano that is processed for high nitrogen is used primarily
for its nitrogen content but will still contain a good amount of phosphorous, potassium and micro-nutrients.
Similarly, guano fertilizer processed for high phosphorous will have some nitrogen, potassium and micro-nutrients.
The guano raw product can also be manipulated for the finished product to contain equal portions of both.

All garden vegetables will benefit from the nutrient rich guano. Leafy greens prefer high-nitrogen for growth, as the plant approaches budding and fruiting time the phosphorous, flowering guano, is more appropriate.
Average application of all guano is 1/2 to 2 pounds per 100 sq. ft. of vegetable garden preferably broadcast before planting.
For large transplants dig a hole 2-3 times larger than the root ball. Mix into the soil 1 cup of guano fertilizer.
For established Plants, Use 1/2 cup - 3 cups per plant depending on size. Lightly scratch into the top 1inch (2.5 cm) of soil and water thoroughly.

Seedlings and young tender plants do not need much fertilizer, if any is to be used, mix 1-2 heaping tablespoons per one gallon of potting soil or use a liquid solution.

Guano is excellent for adding to growing mixes in your container garden. New Container Plants add 2 Tbsp. per gallon of soil.
For established container plants use 1/2 cup 1 cup per plant. Lightly scratch the powder into the top 1inch (2.5 cm) of soil and water thoroughly.

A liquid guano solution can be applied more often. Mix 1-2 cup of guano into about 5 gallons of water. One application of liquid guano every second week will be enough to gauge future applications. Liquid fertilizer is excellent if plant deficiencies are discovered and immediate nutrient addition is needed as with all liquid fertilizers the plant nutrients are immediately available to the plant.

Because of the various choices of NPK content in guano fertilizer it can be used as a natural alternative to chemical solution for growing hydroponically.

No comments:

Post a Comment