Impact of biofertilizer and irrigation in enhancing productivity potential of linseed (Linum usitatissimum L.) under utera condition

Abstract

A field experiment was conducted during rabi 2012-13 and 2013-14 at Agricultural Research
Institute, Patna, Bihar to study the effect of biofertilizer viz., Phosphate Solubilising Bacteria,
Azotobacter and irrigation in enhancing productivity potential of linseed (Linum usitatissimum L.)
under utera condition. Utera linseed responded significantly to the irrigation treatments with highest
yield recorded under two irrigations, where as the percentage increase in yield was found higher
for one irrigation over no irrigation. All the fertility treatments showed significant increase in
seed yield with respect to control during both the years. The treatment, 100% recommended dose
of nitrogen and seed inoculation with PSB and Azotobacter significantly out yielded other
treatments during both the year of experimentation. The interaction effect also revealed significant
increase in seed yield with respect to irrigation and fertility, with highest yield of 1074 kg/ha and
844 kg/ha recorded under two irrigations along with application of 100% RDN + PSB and
Azotobacter during 2012-13 and 2013-14 respectively. The percentage increase in yield by 100%
RDN + PSB and Azotobacter, over the control fertility treatments, was found higher when applied
with one irrigation with values of 132% and 113% during 2012-13 and 2013-14 respectively. The
highest net return and B:C ratio was recorded for two irrigations with 100% RDN + PSB and
Azotobacter, followed by one irrigation with 100% RDN + PSB and Azotobacter.