Determining Grain Losses

Example 1

Combine operates with a loss of 4%. Better adjustment reduces grain loss by 1% to 3%. Average yield per hectare is 5000 kg.

Operating at a rate of 2.5 hectares per hour, the combine can cover 20 hectares in 8 hours.

4% 20 ha x 200 kg = 4000 kg
3% 20 ha x 150 kg = 3000 kg
    1000 kg less
grain is lost

 

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Explanation of Examples

8 hr 16 ha 4.0% loss = 3200 kg
8-3/4 hr 16 ha 1.5% loss = 1200 kg
2000 kg less
grain is lost		    

 

2000 kg of grain saved corresponds to approximately 3 to 4 hectares in terms of contracting charges.

Reducing ground speed to prevent grain losses may even justify somewhat higher contracting charges per hectare.

If the operator or another person checks grain losses three times daily and achieves a reduction of 1 to 1.5%, only thirty minutes is required for this purpose.

However, 1% less grain loss means approx. 800-1000 kg of grain can be saved in an 8-hour working day.

Naturally, the combine can operate even more economically (especially when several combines are working in one field) if one person is employed specifically to check grain losses at all the machines.


A-Area performance
B-Losses in %

Z19762

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