Plants

5 Organic Weed Control Strategies At Low Cost

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My attention has been drawn to the problem of weed control facing farmers practicing organic farming. Firstly, am glad to see that farmers are now embracing organic agriculture; they do not only produce food profitably, but they are also now conscious of what they produce and the consumer’s health.   Weeds are one of the … Read more

10 Pre-Emergence Herbicides For Weeds Control

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It is very important you control weeds, grasses, broadleaf, and sedges, anywhere they emerge, whether in your homes, farm or workplace. The control of weeds is a must prior to and after planting. Herbicides are the known chemicals used to control weeds commercially. There are two types of herbicides, we have The preemergence herbicides are … Read more

Types Of Weeds And Effective Methods Of Weed Control

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Weeds are great threats to successful crop production. Weeds are deleterious and the harms they cause are enormous; starting from their unruly competition for nutrient, space, water, and air with the sown crops, they also harbor pests which in turn cause devastating crop diseases, thus, reducing the quality and quantity of the sown crop. But do you know you can use insects to control weeds? Have you heard of mycoherbicides? If no, relax and get liberated as you read through this article.

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How To Make Traps To Control Insect Pests In An Organic Farm

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Pest trapping is a creative way of controlling pest without harming the environment. Irrespective of your system of cropping you adopt; you should prepare measures to combat pests to enhance your yield at the end of the cropping season. Insect traps are used to reduce the population of insect pests on the farm without causing any defect to the plant and the environment.  

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3 Ways To Test Soil pH Without Using The Soil Test Kit

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soil ph testing

You can test the pH of the soil using different techniques. The best way to test soil pH is using the soil test kit. This contains sensors that detect several parameters of the soil such as the pH level, Nitrogen, and other essential elements level in the soil. All the parameters are used to determine … Read more

Types Of Fungicides Used In Agriculture With Examples

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The type of fungicides used to control various fungal diseases depends on the severity of the infection. Fungi cause more than 70 percent of the diseases affecting crops. Fungi are of huge economic importance in agriculture; they cause different crop diseases. Other disease-causing agents are bacteria, virus, and nematodes. Fungicide is one of the common … Read more

Best Methods Of Plant Disease Management (Organic And Inorganic)

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bacterial diseases in plants
 
 

Plant diseases are of great economic importance in crop production. Plant disease is the deviation from the normal state of health of the plant, resulting in the reduction of farm yield and crop failure in severe cases.

There are different methods of plant disease management; in this article, you will learn each method and determine the best one to adopt on your farm.

The main effect of plant diseases on crop production is a reduction in the quantity of farm produce while pests reduce both the quality and quantity of the farm produce. Both pests and plant diseases must be controlled or managed to achieve a reasonable yield from the farm.

 

How plant diseases develop

Before we delve into methods of controlling plant diseases; it is important we understand the plant disease cycle and how plant diseases emerge.

Plant disease cycle is the succession of events that occur during the development of diseases in a plant. Plant diseases do not just manifest, there are three (3) conditions that must be present for any plant disease to manifest. These conditions are:

  •  A susceptible plant.
  •  A virulent pathogen.
  •  A favorable environment.

A plant disease will emerge ONLY if these three conditions are present.

 

Let me explain how these conditions interact for a better understanding of disease development in plants.

The plant to be infected must be susceptible. Susceptible in the sense that it would have been physiologically weak either as a result of a nutrient deficiency or water stress. This state is a susceptibility and the first stage of plant disease development.

Plant diseases are caused by organisms called pathogens and they must be virulent. A virulent pathogen is a pathogen that is capable of causing different plant diseases. Some pathogens may lack the ability to cause disease, probably as a result of reduced vigor. Bacterial diseases in plants occur when pathogens penetrate the plants through openings of the plant tissues; such pathogen is said to be virulent.

The environment where the plant and pathogen will interact must be favorable for any plant disease to occur. Environment plays a vital role in plant disease management. A favorable environment that aids disease development is either a water-logged area or when the plot has been overtaken by weeds. Most fungal diseases in plants are caused by the water-logging situation.

If any of these conditions is missing, disease will not occur even if two conditions from the aforementioned conditions are present.

From this analysis on plant disease management, a farm is supposed to record a very negligible disease condition. Truly, plant disease cannot be totally eradicated, but it can be managed and reduced below an economic threshold level.

This can be done without spending much on disease control if a farmer can willingly choose a particular condition or two conditions as his or her disease management strategies and ensures they do not favor the development of plant disease, then the farmer will harvest and earn more.

A farmer has control over two conditions: the susceptibility of the plant and the environment. Imagine a situation where the farmer focuses on only the environment, through controlling irrigation and drainage to discourage water-logging situation or regular weeding to eradicate any plant pest-host; such farm will experience a disease-free operation. Or through fortification of the plants with adequate nutrients or ensuring there is an adequate supply of water to avoid water stress.

A better understanding of this plant disease management concept can make a farmer cultivates with little or no disease emergence record, conversely increasing the quality and quantity and ultimately the farm profit.

 

How to control plant diseases

In a situation where plant diseases have emerged or a particular plant disease is endemic to the environment. There are several proven ways diseases can be controlled through various plant pest control methods.

Plant disease management methods are classified into three (3) general principles of plant disease control. They are also called principles of crop protection; they are:

  •  Exclusion principles
  •  Eradication principles
  •  Suppression principles

Now let’s see how these principles of plant disease management work:

 

1. Exclusion principles: These principles of disease control are adopted in anticipation of the plant disease. They aim at avoiding and preventing the spread of the disease; they involve the following cultural practices:

  •  Careful selection of planting site.
  •  Using adequate planting distance.
  •  Planting improved and pathogen-free seeds.
  •  Use of biosecurity and legislation to restrict movement within the farm.
  •  Selection of healthy and vigorous seeds.
  •  An adequate supply of nutrients.
  •  Planting under favorable soil pH.
  •  Biological control of plant diseases using natural enemy of the pest.

 

2. Eradication principles: These principles of crop protection are adopted when plant disease has emerged. They aim at killing or eliminating and outright removal of pathogens from the farm. This can be achieved through:

  • Cultural control methods: They are usually adopted in an organic farm, cultural control of plant diseases includes: proper land preparation techniques, crop rotation, bush fallowing, flooding, weeding, etc. can be adopted. It is another physical control of plant diseases.
  • Chemical treatment: These principles of plant disease control involve the use of synthetic materials or chemical substances to control plant diseases and pathogens; it involves the use of pesticide, soil fumigants, seed treatment and plant fungus treatment using fungicides. This can be adopted in an inorganic farm.

 

3. Suppression principle: This can be adopted in both an organic or inorganic farm as plant disease control measure. It is adopted when a plant disease has emerged. It aims to keep the population of the pathogen below an economic threshold level, thereby making the disease unnoticed.

Lastly, plant diseases can also be controlled through integrated plant disease management. It involves the combination of the two or more methods of plant disease management or principles.

 

In conclusion:

These are the methods of plant disease management to adopt in both organic and inorganic farm. It is better to prevent and avoid than to eradicate. Prevention of plant disease is often cheaper compare to plant disease diagnosis and disease control. As a good farm manager, you must always ensure your farm is healthy by adopting any of the aforementioned plant disease control methods.

 

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