Effect of different n-p levels on root yield and its contributing characters of carrot Dacus carota L

Shafique Mazhar

Abstract


A field trial for two consecutive winter seasons 2013-2014 and 2014-2015 was conducted in Sindh Agriculture University, Tandojam to evaluate the effect of different N-P levels (0-0, 50-50, 65-60, 80-70, 95-80 and 110-90 kgha-1) on root yield and its contributing characters of carrot (variety early Nantes). Pooled analysis of variance inferred that the effect of years was significant on leaves length, leaves number plant-1, root  diameter, leaves weight plant-1, single root weight and yield per hectare, while effect f years on root length remained non-significant. On the other had, N-P levels affected highly significantly to all the parameters studied (P>0.01). Among the N-P levels 110-90 kgha-1 produced maximum values for all the growth and yield parameters, but comparison with 9580 kgha-1 showed non significant difference. However 95-80 kgha-1 remained optimum level. The comparison of the years revealed that during second year of the study (2014-2015) the performance was significantly (P>0.01) superior than first year (2013-2014) except root length which remained statistically non-significant. Conclusively, the results revealed that the crop during second year 2014-2015 when fertilized with 95-80 kg ha-1 N-P level produced most economical root yield (12.244 m.t ha-1) as compared to with 15.245 m.t ha-1 under highest N-P level of 110-90 kg during the same year.0.6794**). A field trial for two consecutive winter seasons 2013-2014 and 2014-2015 was conducted in Sindh Agriculture University, Tandojam to evaluate the effect of different N-P levels (0-0, 50-50, 65-60, 80-70, 95-80 and 110-90 kgha-1) on root yield and its contributing characters of carrot (variety early Nantes). Pooled analysis of variance inferred that the effect of years was significant on leaves length, leaves number plant-1, root  diameter, leaves weight plant-1, single root weight and yield per hectare, while effect f years on root length remained non-significant. On the other had, N-P levels affected highly significantly to all the parameters studied (P>0.01). Among the N-P levels 110-90 kgha-1 produced maximum values for all the growth and yield parameters, but comparison with 9580 kgha-1 showed non significant difference. However 95-80 kgha-1 remained optimum level. The comparison of the years revealed that during second year of the study (2014-2015) the performance was significantly (P>0.01) superior than first year (2013-2014) except root length which remained statistically non-significant. Conclusively, the results revealed that the crop during second year 2014-2015 when fertilized with 95-80 kg ha-1 N-P level produced most economical root yield (12.244 m.t ha-1) as compared to with 15.245 m.t ha-1 under highest N-P level of 110-90 kg during the same year.0.6794**).

Keywords


carrot;n-p levels;Dacus carota

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References


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