Faidherbia albida (Delile) Tree Dieback Effects on Crop Production in the Parkland Agroforests of Southwestern Niger

Table 2

The effects of F. albida trees dieback on grain yields of main crops.

Crops	N	Area of farms	Yield before dieback (kg/ha)	Yield with dieback (kg/ha)	Yield reduction (%)	value
Millet	150	5.17 ± 6.58	386.21 ± 8.92a	241.81 ± 6.38 b	33.03 ± 3.32	<0.01
Cowpea	148	5.16 ± 6.62	634.65 ± 34.90a	334.55 ± 19.75 b	47.84 ± 1.05	<0.01
Sorrel of Guinea	54	6.80 ± 8.25	161.11 ± 11.64a	75.37 ± 7.02 b	52.09 ± 2.028	<0.01
Sorghum	99	5.32 ± 6.30	90.91 ± 20.42a	39.36 ± 9.37 b	55.47 ± 1.75	0.023

N is the number of respondents. The means for yield of each crop before and with dieback followed by different letters are statistically different ().