Intercropping Maize with Faba Bean Improves Yield, Income, and Soil Fertility in Semiarid Environment

Table 3

Relative crowding coefficient (k), product of the coefficients (K), aggressivity value (A), and system productivity index (SPI) of maize and faba bean (FB) intercrops.

Treatments	k values			A values
	Maize	Faba bean	K	Maize	Faba bean	SPI
Maize + Gora FB at 25%	6.75	2.06	13.90	−0.004	0.004	5478
Maize + Gora FB at 50%	4.75	1.81	8.60	−0.0005	0.0004	5795
Maize + Gora FB at 75%	1.50	2.13	3.20	−0.001	0.001	5383
Maize + Moti FB at 25%	1.02	1.76	1.79	−0.004	0.004	4651
Maize + Moti FB at 50%	1.69	2.30	3.89	−0.003	0.003	5487
Maize + Moti FB at 75%	2.25	1.88	4.23	−0.0003	0.0003	5607