Field experiments showed that Dicyandiamide significantly reduces methane and nitrous oxide emissions in paddy systems, indicating effective nitrogen management strategies.
The field experiments were carried out to assess the influence of Dicyandiamide (DCD) along with nine different nitrogen management practices on emission of methane (CH4 ) and nitrous oxide (N2 O) under intensive paddy system of Cauvery Delta Zone. The CH4and N2 O efflux clearly showed daily and seasonal fluctuations. Among the treatments, Leaf Colour Chart (LCC) based N (30 kg N ha-1 keeping the LCC value 4 as standard + DCD @ 10 % of applied N) recorded the lowest average emission of 0.50 mg.m2 .day-1 and 2.93 mg.m2 .day-1 of N2 O and CH4 , respectively. Irrespective of all treatments, among the critical stages of crop growth, flowering stage recorded highest emission of 23 % N2 Oand 50 % of CH4 when compared to tillering stage. Among the “N” applied treatments, Leaf Colour Chart (LCC) based N + DCD recorded the lowest seasonal green house gas emission (0.49 kg ha-1 & 0.44 kg ha-1 of N2 O and 2.94 kg ha-1 & 3.20 kg ha-1 of CH4 during Kharif and Rabi seasons, respectively) along with higher paddy yield (12 to 15%).
No takes yet. Share an insight, caveat, or question.
Parameswari et al. (2017) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: