2013•International Journal of Agronomy and Plant ProductionRequires access
Yield components, agronomic and essential oil yields of white cumin as affected by varying doses of nitrogen and phosphorus.
Amare Girma, Mekuria Taddesse
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Abstract
This experiment was conducted to find out effect of nitrogen and phosphorus rates on yield and yield components of Ethiopian cumin. The treatment consisted of four levels of nitrogen (0, 50, 100 and 150kg ha -1 ) and four levels of phosphorus (0, 25, 50 and 75kg ha -1 in form of P2O5). Main and interaction effects of fertilizer significantly improved plant height, number of secondary and tertiary branches/plant, number of umbels/plant, dry matter yield, seed yield, essential oil content and essential oil yield. Number of seeds/umbel was influenced only by the main effect of fertilizer while number of primary branches and 1000- seed weight were remained unaffected. Combined effect of 100kg N ha -1 and 50kg P2O5 ha -1 gave maximum significant total dry matter yield (3307 kg ha -1 ), seed yield (1072 kg ha -1 ) and essential oil yield (39 l ha -1 ).