Performance of green manure crops grown in two seasons in the Cerrado of MatoGrosso do Sul
Keywords:
Crotalaria, Canavalia, Cajanus, dry mass, soil improvement plants, agroecologicaltransition.Abstract
This study was developed during 2004 at 2006 in Campo Grande, MS, Brazil, in a dark red latosol, with experiments spring/summer and fall/winter periods, aiming at assessing dry mass productivity, quantity, N concentration and seed/grain productivity from green manure: Crotalaria juncea, ochroleuca, mucronata, spectabilis and breviflora, Canavalia ensiformis (wonderbean), Canavalia brasiliensis (Brazilian jackbean), Mucuna aterrima (velvet beans), Mucuna pruriens, Cajanus cajan cv Fava Larga and IAPAR 43-Aratã. C. juncea, mucrunata, ochroleuca and dwarf pigeonpea accumulated the biggest dry mass quantities in spring/summer period, while wonderbean and Brazilian jackbean outstood. As for quantity and N concentration in the aerial part, C. mucronata outstood during spring/summer period. In fall/winter, wonderbean and Brazilian jackbean had the best performances. With regard to seed/grain productivity, wonderbean outstood in the spring/summer period, while in the fall/winter dwarf pigeonpeaand wonderbean over performed the other species.
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