Not all pesticides and fungicides are equal. They come in a variety of formulations and the seedling grower must know when and where to use them for optimal results.
Although seedlings grow for a limited time in a nursery, pest and disease management is crucial to healthy seedlings and plants. If considerable effort has been made to design and build a superior nursery, and the plants are neglected, all the money spent was in vain. It would then be easier to buy seedlings from a professional seedling supplier, than grow them on farm.
Many growers assume growing seedlings is easy. It is easy if they are taken care of and a preventative pest and disease programme is followed. Since the nursery area is usually moist, due to the many irrigation cycles needed, it is natural that there will be more insect, bacterial and fungal activity. In terms of a commercial viewpoint, most of these pests, bacteria and fungi are detrimental to the ultimate aim of the farming system. There are numerous pesticides and fungicides to control them but the grower needs to understand when and where they should be applied.
It is possible to apply pesticides and fungicides through the irrigation systems. However, one would either need to install an inline liquid fertiliser injector or mix the chemicals in a tank which is connected to the irrigation system.
There are many pesticides and fungicides formulations available to the grower. Each formulation has its advantages and disadvantages as it relates to the growers conditions and preferences. The advantages and disadvantages of each of the pesticides and fungicides formulations and how they should be applied to the seedlings are:Advantages and disadvantages of each of the formulations and how they should be applied to the seedlings.
|Seed treatment||cheap and highly effective||Accurate equipment needed|
|Treated seed available|
|Potential risk of damage|
|Reduces germination %|
|Sprays||Cheap||Easy to overdose|
|Wide range of products||Drenching for soil diseases can be expensive|
|Apply through irrigation system||Diluted after each irrigation cycle|
|Controls many problems||Short life span|
|Dust/powders||Cheap||Easy to overdose and damage seedlings|
|Easy to apply||Unpleasant during windy conditions|
|Cheap equipment used|
|Dips||Highly effective||Control temporary|
|No special equipment used||Can shock seed|
|Treats a large amount of seed||Easy to overdose|
|Reduces germination %|
|Hazard to operator|
|Granules||Easy to apply||Overdosing easy|
|No equipment needed||Spread of granules never even|
|Burning of seedlings occur|
|Handling of granules dangerous to health|