*E-mail address: dr_jsmann@yahoo.co.in.
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An experiment was conducted at CSWRI Avikanagar in 2005–06 to know the nutritional status of forage production under different agroforestry system in semi-arid area of Rajasthan. The results reveal that the maximum biomass production was recorded in three-tier agroforestry system having cenchrus and groundnut crops (in 2:3 ratio). On an average three-tier agroforestry system registered 20.14 and 307.5% higher biomass production in comparison to two-tier and open system, respectively. Further, total protein yield has also been estimated the highest in three-tier agroforestry system (954.9 kg/ha) having cenchrus and groundnut as associated crops. This combination of cenchrus and groundnut exhibited the highest protein yield irrespective to different tier systems. The protein yield is closely related to biomass yields and highly significant (r = 0.95**) having regression equation Y = 6.01 + 0.15 X.
Agroforestry systems, Bajra, Cenchrus, Fodder trees, Groundnut, Moong, Protein