The genus Cajanus is a member of the family Fabaceae and includes the Pigeon pea (C. cajan), Cajanus scarabaeoides and other species. The genus in distributed across Australaisa, with a number of species endemic to Australia.
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Pigeon pea (http://www.icrisat.org/text/coolstuff/crops/gcrops6.html)
Forage crops (Dolichos lablab, Phaseolus trilobus, Clitoria ternata, Cajanus cajan, and Sorghum vulgare) were grown in monoculture or in a mixed crop with the legume and sorghum planted in the same hole.
Little NO -N was released in the sorghum and cajanus soils during the first 2 weeks of incubation, and rates of nitrification in these soils were lower throughout incubation than in the other soils.
It is therefore reasonable to believe that at least 50% of the N that was not recoverable as NO -N from the sorghum and cajanus plots may have been lost as gaseous N, resulting in nitrogen deficits of about 45 and 20 kg N/ha in the sorghum and cajanus plots, respectively.
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