Azotobacter and L-tryptophan Application for Improving Wheat Yield

Abstract

A field experiment was conducted to evaluate the effect of Azotobacter and L-tryptophan (L-TRP) application on the growth, yield and nitrogen content of wheat (Triticum aestivum L.) crop. Two levels of L-TRP (10G 3 and 10G 4 M) were tested with and without Azotobacter inoculation in a fertilized (NPK: 125-100-60 kg haG 1 , respectively) field. Results revealed that Azotobacter inoculation and L-TRP application significantly affected the wheat crop, however, their combined application produced more pronounced effect as compared with their separate application. Combined application of Azotobacter and 10G 3 M L-TRP significantly increased the grain yield (21.3%), straw yield (20.7%), plant height (5.8%), number of tillers (15.3%), number of spikelets spikeG 1 , (12.3%), spike length (11.6%), 1000-grain weight (6.4%), nitrogen concentration in grains (31.4%) and straw (26.1%) and total nitrogen uptake (56.3%), compared with untreated control.

Effect of enriched composts and establishment methods on crop growth and nutrient concentration of rice (Oryza sativa) in trans-Gangetic plains of India

“…Application of compost also increases the soil organic matter (SoM) content, water-holding capacity and soil-aggregate stability (Carrera et al, 2007;Ho et al, 2022), which in turn have a positive effect on soil health and thereby availability. Further, compost not only slowly releases nutrients, but also prevents the losses of chemical fertilizers through denitrification, volatilization and leaching by binding to nutrient elements and releasing it gradually with the passage of time (Arshad et al, 2004;Niel, 2021). Haramoto and Gallandt (2005) observed the increased availability and uptake of nutrients by crop with integrated application of organic and inorganic sources, might be owing to decrease in weed seed germination and its growth.…”