Root and oil yield of vetiver (Vetiveria zizanioides) as influenced by fertilizer management in an intercropping system

A field study was conducted in shallow black soils of medium fertility in Malwa region of Madhya Pradesh, during the rainy season of 1994–95 and 1995–96, to evaluate the effect of different fertilizer management on root and oil yield of vetiver (Vetiveria zizanioides L.) in intercropping system with redgram or pigeonpea [Cajanus cajan (L.) Millsp.] and blackgram (Phaseolus mungo L). Intercropping of vetiver with redgram proved better as redgram gave higher seed yield than intercropping of blackgram with vetiver. Fertilizer application @ 75 kg N + 40 kg P₂O₅/ha to vetiver and 2 kg/ha of Rhizobium to the redgram resulted higher net profit of Rs 43, 540/ha besides benefit: cost ratio of 2.29.