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Table 4 Survival rates, subplot size, root collar diameter20, and the above-ground woody biomass production of pigeon pea per m2

From: Allometric equations for estimating on-farm fuel production of Gliricidia sepium (Gliricidia) shrubs and Cajanus cajan (pigeon pea) plants in semi-arid Tanzania

Cropping year: 5 (2019)

 

Survival rates (%)

Subplot area (m2)

RCD20 min (cm)

RCD20 max (cm)

Mean RCD20 (cm)

AGWB_PP per m2 (g)

C/system 1: PP (n = 61)

85

16.2

0.77

2.02

1.36

390

C/system 2: MPP (n = 59)

82

16.2

0.59

1.59

1.07

209

C/ system 3: MPPGS (n = 50)

69

16.2

0.81

1.55

1.06

161

Cropping year: 6 (2020)

 

Survival rates (%)

Subplot area (m2)

RCD20 cm (min)

RCD20 cm (max)

Mean RCD20 (cm)

AGWB_PP per m2 (g)

C/system 1: PP (n = 70)

65

24.3

0.64

2.63

1.32

328

C/system 2: MPP (n = 71)

66

24.3

0.81

2.55

1.36

313

C/system 3: MPPGS (n = 52)

48

24.3

0.66

2.37

1.46

288

Cropping year: 5 (2019) and 6 (2020)

 

Survival rates (%)

Subplot area (m2)

RCD20 cm (min)

RCD20 cm (max)

Mean RCD20 (cm)

AGWB_PP per m2 (g)

C/system 1: PP (n = 131)

75

40.5

0.64

2.63

1.34

353

C/system 2: MPP (n = 130)

74

40.5

0.59

2.55

1.22

271

C/system 3: MPPGS (n = 102)

59

40.5

0.66

2.37

1.26

237