Effect of organic manures and biofertilisers on herbage yield, quality and soil nutrient balance in Indigofera tinctoria cultivation
Keywords:
Biofertilisers, Farm yard manure, Indigofera tinctoria, Organic manuring, Soil nutrient balance.Abstract
Experiments were conducted to study the effect of combined application of organic manures and biofertilisers on herbage yield and quality of Indigofera tinctoria during September 2012 -13 and 2013-14 at All India Co-ordinated Research Project on Medicinal, Aromatic Plants and Betel Vine Centre, Kerala Agricultural University Thrissur, Kerala, India. The treatments included FYM 10 Mg ha-1, FYM 10 Mg ha-1 + Azospirillum (2 kg ha-1), FYM 10 Mg ha-1 + Azospirillum (2 kg ha-1) + VAM (2 kg ha-1), Vermicompost (3 Mg ha-1), Vermicompost (3 Mg ha-1) + Azospirillum (2 kg ha-1), Vermicompost (3 Mg ha-1) + Azospirillum (2 kg ha-1) + VAM (2 kg ha-1), Coirpith compost (4 Mg ha-1), Coirpith compost (4 Mg ha-1) + Azospirillum (2 kg ha-1) and Coirpith compost (4 Mg ha-1) + Azospirillum (2 kg ha-1) + VAM (2 kg ha-1). The pooled herbage yield was higher in plots with basal application of farm yard manure 10 Mg ha-1 and azospirillum 2 kg ha-1 (5691 kg ha-1). However, it was statistically on par with individual application of coirpith compost @ 4 Mg ha-1 (5542 kg ha-1) and combined application of vermicompost @ 3 Mg ha-1 along with Azospirillum 2 kg ha-1 (5304 kg ha-1). The quality as indicated by glycoside indican was more in plants which received basal application of FYM alone. The uptake of N and K were higher in treatments which recorded higher herbage yield. Due to combined application of organic manures and biofertilisers, N and K contents in the post experimental soil increased significantly, while the content of P decreased. The highest B: C ratio of 3.51 was in treatment with Farmyard manure 10 Mg ha-1 and Azospirillum 2 kg ha-1.Downloads
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