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Table 5 Fertilizer use per acre, clean seeds, irrigation and average yields

From: Low potato yields in Kenya: do conventional input innovations account for the yields disparity?

 

Average yield (Tons/Ha)

SD

Min

Max

Fertilizer use

    

Proper use

14.47705

5.640542

2.7181

25.00652

Underuse

11.68091

6.224888

1.019287

33.16082

Overuse

12.91097

6.671999

2.17448

26.09376

Seeds

    

Clean seeds

15.74899

4.371697

5.4362

21.7448

Non-clean seeds

12.00645

6.340899

0.81543

33.16082

Fungicides

    

Use fungicides

12.41601

6.268137

0.81543

33.16082

Do not use

9.454046

6.229853

2.71810

27.18100

Irrigation

    

Has irrigation

13.81068

5.936193

1.08724

33.16082

Does not have irrigation

11.66037

6.345868

0.81543

28.26824

Combined

    

Clean seeds and proper fertilizers

18.34717

2.639298

13.04688

21.74480

Clean seeds and fungicides

16.39354

3.58500

9.78516

21.74480

Proper fertilizers and fungicides

14.57256

5.603104

2.71810

25.00652

Clean seeds and irrigation

13.81068

5.936193

1.08724

33.16082

Clean seeds, proper fertilizers and fungicides, irrigation

18.34717

1.545576

16.03679

19.29851

Overall (general)

12.16793

6.310752

0.81543

33.16082