What Is The Best Fertilizer For Growing Potatoes? - GrowerExperts.com
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If you have grown potatoes in the past and they have turned out small - the amount and type of fertilizer may be the reason.
Not knowing your soil analysis beforehand means the soil may not contain the right ratios of nutrients to grow a good crop of large potatoes.
Potatoes need fertile soil to grow successfully - if you skip this your crop will suffer in size and development.
Getting the correct ratio of N, P, and K after soil analysis is essential for growing potatoes.
If you add large amounts of the wrong nutrient like nitrogen, then you will be doing more harm than good.
You should carry out a soil analysis by either buying a soil test kit online or by sending a sample of your soil to an agricultural testing lab.
A more specific way to do soil analysis would be to get your local agri supplies stores to arrange it.
After collecting the soil sample you put it into a bag and send it off to be analysed.
Choosing the type of fertilizer for growing your potatoes is a matter of personal preference.
There are many different ways you can help your potatoes to grow, you can choose the organic route or standard chemical fertilizer.
Whichever way you choose to fertilize your crop, you need to decide if you are going to apply your fertilizer in a general way, or if you want to add it in a specific way.
Farmyard manure is a good alternative to chemical fertilizers
For those who want to add fertilizer in a general way, I would recommend adding a wheelbarrow of farmyard manure or compost per 4m2 in autumn and digging it in well.
For those who want to apply more specific knowledge when adding fertilizer, the first thing you should do is to carry out soil analysis.
This begins by collecting a soil sample and either testing it yourself using a soil test kit bought online, or by sending in your sample to your local Department of Agriculture for them to analyse.
Collecting your soil sample
To take your sample in a small area (less than a couple of m2) you simply dig down 4-6 inches in the middle of your plot and grab a handful of soil.
In large plots, take a sample at intervals in an X formation to get a more accurate representation of the whole area.
Reading Your Soil Analysis Report
When you receive your soil analysis results or complete your home test, you will have figures which relate to the amounts of Nitrogen (N) Phosphate (P) and Potash (K) which are present in your soil.
Now you have real data on how much of these nutrients are present. Consult the fertilizer manual PDF (Google) to find out how much more of these nutrients you need for your variety.
So what is the best fertilizer for growing potatoes?
The best fertilizer for growing potatoes is one which has relatively low Nitrogen (N) and is at least twice as high in Phosphorous (P) and Potash (K).
An example of a suitable potato fertilizer N,P,K ratio would be 4-10-10
An example of a good potato fertilizer here - amzn.to/31cooUs
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