District

District-specific trial

Maize Grain yield (kg∙ha⁻¹)

2011

2012

2013

Mean

Savelugu

Maize + Manure (2.5 tonnes ha⁻¹) + 1/2 NPK recommended rate

1636

1444

2229

1770

Yendi

Maize + 2 bags NPK 15:15:15 + 1.5 bag SA

2728

2772

N/A*

2750

West Mamprusi

Maize + NPK recommended rate

1263

1587

N/A

1425

Kumbungu

Hybrid (Pannar 53) maize variety + recommended rate

2000

4379

5929

4103

Zabzugu

Maize + Fertisoil 3 t/ha + 2.5 bags/ha SA

3603

2453

5244

3767

Gushegu

Hybrid (Pannar 53) maize variety + recommended rate

2320

3083

N/A

2701

Saboba

Maize + 2 bags NPK 15:15:15 + 1.5 bag SA

2221

1954

3724

2633

Karaga

Maize + 2 bags NPK 15:15:15 + 1.5 bag SA

1314

2124

N/A

1719

Tamale Metro

Hybrid (Pannar 53) maize variety + recommended rate

2017

3902

4181

3367

East Gonja

Omankwa (DTMA maize variety) + recommended fertilizer rate

2453

1497

N/A

1975

Tolon

Maize + 2 bags NPK 15:15:15 + 1 bag SA

1367

2273

3646

2429

Nanumba South

Hybrid (Pannar 53) maize variety + recommended rate

2187

4125

N/A

3156

Nanumba North

Maize + 2 bags NPK 15:15:15 + 1.5 bag SA

1816

2620

N/A

2218