THE  ROLE  OF EARTHWORMS IN  SUSTAINABLE  AGRICULTURE

Soil macro fauna, consisting of earthworms (Evs), regulate the soil and muddle surroundings .Role of earthworms in soil fertility is thought considering that 1881.

By: RIDA SHABBIR

INTRODUCTION

Soil biota blessings soil productiveness

Sustainable agriculture means the production of food from flora or animals using unique agricultural techniques that defend communities, the environment, and animal welfare.

EARTHWORMS

Earthworms are one of the maximum essential soil animals; They have the functionality to hold the fertility of the soil and consequently play a key position in sustainability. They are also referred to as farmer’s friend, ploughman of the sphere, intestines of the earth, ecological engineers, and biological indicators. Earthworms are functionally very crucial and various, and consequently potentially beneficial for the management of biodiversity and ecosystem offerings.

TYPES OF EWs

  1. Anecic species
  • Drag organic depend from the soil floor into their burrows for meals.
  • “ecological engineers,” or “atmosphere engineers
  1. Epigeic species
  • Live on the soil surface
  • Form no everlasting burrows, and especially ingest litter and humus
  • Do no longer mix organic and inorganic matter.

ROLE OF EARTHWORM

Earthworms maintain the physico-chemical houses of the soil through changing biodegradable materials and natural wastes into nutrient-wealthy merchandise

Earthworms stimulate microbial activity, mix and aggregate the soil, soil water content, and water holding ability. The mutual motion of earthworms and microbes brings quicker decomposition as the earthworm’s situation, aerate, fragment, and enhance the surface location of the natural rely for microbial movement. They also boom litter decomposition, soil organic depend dynamics, nutrient cycles, sell plant growth, and decrease some soil born diseases.

Earthworm burrows act as a channel for plant growth and as pathways for root elongation, specifically in compacted zones commonly located in deeper soil layers.
 It makes the soil porous, growing the water infiltration charge and reducing soil erosion.
Some studies even document that earthworms launch certain metabolites, including vitamin B and nutrition D into the soil, that are desirable for growth of vegetation.
 Various studies also file that earthworms are capable of convert barren land into fertile land and increase the agriculture output

Channeling and burrowing by means of earthworms loosens and aerates the soil and improves soil drainage Soils with earthworms drain up to ten instances quicker than soils without earthworms. One trial determined worms built an 18-cm thick to 30 years.

HOW TO MAINTAIN EARTHWORM NUMBER

Earthworms do not like acid soils with pH (CaCl2))* much less than four.5 Addition of lime raises pH and also provides calcium

  • Use of animal dung
  • Avoid the use of particularly acidifying fertilisers; which includes ammonium sulfate, bordeaux and a few fungicides lessen trojan horse numbers
  • Reduce soil compaction thirteen. use 20% of their frame weight each day in mucus and castings, so that they need moisture to live alive.

Groundcover along with pasture or stubble reduces moisture evaporation.

BENEFITS OF EARTHWORMS

Improved nutrient availability. Worms feed on plant debris (lifeless roots, leaves, grasses, manure) and soil. …

Improved drainage. The huge channelling and burrowing by earthworms loosens and aerates the soil and improves soil drainage. …

Improved soil shape.

Improved productivity.

INFLUENCE  OF EARTHWORM  ON  SOIL;

Earthworms are one of the principal decomposers of organic depend. They get their nutrition from microorganisms that live on natural depend and in soil material. When they circulate through the soil eating, earthworms form tubular channels or burrows. These burrows can persist for a long time inside the soil.

Earthworm burrows boom soil porosity which will increase the quantity of air and water that get into the soil. Increased porosity additionally lowers bulk density and will increase root improvement. Earthworm excrement or casts boom soil fertility because it contains nitrogen, phosphorus, potassium, and magnesium.

 

Earthworm casts also contain microorganisms which increase in abundance as natural count is digested of their intestines. The cycling of vitamins from natural remember and the increase in microorganisms enables plant growth. Earthworm casts in conjunction with binding agents launched by way of earthworms also enhance soil structure and growth mixture balance.

EFFECT ON   BIOLOGICA PROPERTY

  • In many soils, earthworms play a chief position in the conversion of large portions of organic count into rich humus, hence enhancing soil fertility.
  • Once within the burrow, the malicious program will shred the leaf and partly digest it and mingle it with the earth. Worm casts (see backside proper) can comprise forty percent extra humus than the pinnacle of soil in which the trojan horse is living.
  • Most of the species of microorganisms that arise in the alimentary canal of earthworms are similar to the ones in the soils wherein the earthworms stay.
  • The microbial population in earthworm casts is greatly expanded compared with the encompassing soil.
  • Earthworm casts normally have a more population of fungi, actinomycetes and micro organism and better enzyme pastime than the surrounding soil.
  • Earthworms are very essential in inoculating soils with microorganisms. Many microorganisms within the soil are in a dormant stage with low metabolic pastime, looking ahead to appropriate situations just like the earthworm or mucus to turn out to be energetic. Earthworms were proven to boom the overall microbial respiration in soil, thereby improving microbial degradation of natural count.

EFFECT ON CHEMICAL PROPERTY

  1. Earthworms bring about mineralisation of natural matter and thereby release the vitamins in to be had forms that may be taken up with the aid of the flora.
  2. Organic depend that passes through the earthworm gut is egested in their casts, that is damaged down into lots finer particles, in order that a extra floor location of the natural rely is exposed to microbial decomposition.
  3. Earthworms have essential impacts on the nutrient cycling process in lots of ecosystems.
  4. Earthworms contribute nutrients in the form of nitrogenous wastes. Their casts have higher base-exchangeable bases, phosphorus, exchangeable potassium and manganese and total exchangeable calcium.
  5. Earthworms favour nitrification when you consider that they growth bacterial populace and soil aeration.
  6. The most vital impact of earthworms may be the stimulation of microbial pastime in casts that complements the transformation of soluble nitrogen into microbial protein thereby preventing their loss through leaching to the lower horizons of the soil.
  7. C: N ratios of casts are decrease than that of the encompassing soil
  8. The influence of earthworms on soil nitrogen and nitrogen biking.
  9. The nitrogenous products of earthworm metabolism are back to the soil via casts, urine, muco proteins and dead tissues of earthworms.

 

CONCLUSION

Earthworms are an crucial part of the soil surroundings. They help enhance soil shape and soil chemical and biological residences. They are specially vital in no-until, helping to stimulate air and water movement in soil. Earthworms tend to thrive maximum with  out tillage, if sufficient crop residue is left on the soil floor. Crop rotations, cover plants, manure, fertilizer and lime applications all affect earthworm populations. Some pesticides, specially organophosphates and carbamates

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