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close this bookBetter Farming Series 10 - The Farm Business Survey (FAO - INADES, 1976, 38 p.)
View the document(introduction...)
View the documentPreface
close this folderPart 1 - Agriculture is a trade that must be learned
View the document(introduction...)
View the documentWhat did we learn in the first- year course?
View the documentWhy study the Better Farming courses?
View the documentWhy go on with the Better Farming course.?
View the documentWhat shall we learn in the second- year course?
close this folderPart 2 - The farm business survey
View the document(introduction...)
View the documentWhy make a farm business survey?
View the documentA farmer should know the size of his fields
View the documentHow to reckon the length and width of a field
View the documentHow to reckon the area of a field
View the documentHow to measure the weight of a harvest
View the documentHow to reckon the yield per hectare
View the documentHow to reckon receipts
View the documentExplanations to help in answering the questionnaire
View the documentPart 3 - Farm business survey questionnaire

How to reckon the yield per hectare

To find out if the harvest has been good, you often need to reckon how many kilogrammes you would have harvested if you had a field of one hectare.

When you have worked out this Figure, you have reckoned the yield per hectare. Example:

I have a field of groundnuts that is 54 metres long and 22 metres wide. The area is: 54 m x 22 m = 1188 m². I harvested 94 kg of groundnuts from this field.

What is the yield per hectare?

To work this out, I use what is called the rule of three, thus:

From an area of 1 188 m² I harvested

94 kg

For 1 m² I would have harvested

94 kg/1188

For 1 ha (or 10000) m² I would have harvested

94 x 10000/1188= 791 kg

Another example:

I have a field of maize which is 165 metres long and 74 metres wide.
Its area is 165m x 74m= 12210 m².
I harvested 924 kg of maize on this field.
What is the yield per hectare?
I use the rule of three:

On an area of 12 210 m² I harvested

924 kg

On 1 m² / would have harvested

924/12210

On 10 000 m² for 1 ha) I would have harvested

924 x 10000/12210 = 756.7 kg