Micronutrient enrichment mediated by plant-microbe interactions and rice cultivation practices

Improving Water and Nutrient Use Efficiency in Rice by Changing Crop Establishment Methods, Application of Microbial Inoculations, and Zn Fertilization

“…The superiority of 75% RDN + An–Ps biofilm formulation in AUEN and AUEP is the result of lower N and P application rate than RDN, but statistically at par yields with RDN. A higher AUEN at a low rate of N application was also reported by Zhao et al and Shivay et al; variation in AUEN among CEMs was also reported by Ali et al and Satyanarayana et al It is well documented that these microbial inoculants, which include nitrogen fixers, can lead to a saving of 25% N, without negative effects on yields . Additionally, the biofilm inoculants have the potential to provide fixed nitrogen in a sustained manner to the crop, up to the harvest stage …”

“…Potassium was applied uniformly in all treatments at the rate of 49.8 kg K ha −1 . The details of the preparation of these inoculants and their formulations are given in the previous investigations . Both these formulations were prepared by mixing with vermiculite (hydrous phyllosilicate mineral):compost (1:1) as the carrier.…”

“…Both these formulations were prepared by mixing with vermiculite (hydrous phyllosilicate mineral):compost (1:1) as the carrier. The paddy straw compost was C/N 16.22 and humus 13.8% (pH 7.34), and the cyanobacterial, fungal, and bacterial colony forming units in the formulations were 10 4 , 10 5 , and 10 8 g −1 carrier, respectively, as optimized in earlier studies . All the bacterial/cyanobacterial strains were maintained in the culture collection of the Division of Microbiology, ICAR—Indian Agricultural Research Institute, New Delhi, India.…”

“…The use of microbial inoculation in the nutrient management of rice is known to elicit positive effects on growth, yield, and nutrient uptake. Among microbes, the role of cyanobacteria and their consortium/biofilms with agriculturally beneficial bacteria in improving plant growth by N fixation and solubilizing soil P has been reported, and its promise is well established in conventional puddled transplanted rice system, besides recent reports on their promise in SRI, but not in aerobic rice . However, no information is available regarding the comparative efficacy of these inoculants in SRI and ARS, vis‐à‐vis PTR, in terms of improving yield and water savings; with this background, this study was undertaken.…”

Effect of Arbuscular mycorrhizal Fungal Colonization on Nutrient Uptake in Rice Aerobic Conditions

“…Soil microorganisms such as AM fungi symbiotically associated with plant roots and interacting with specific microbial communities are able to develop a range of activities to increase plant growth and crop productivity under stressed conditions (Barea et al, 2005;Azcón and Barea, 2010). Beneficial effect of microbial inoculants has been demonstrated in terms of greater biomass production, better nutrient uptake in plants and increase in grain N and P in rice grown under SRI practices (Prasanna et al, 2015) and increased micronutrient uptake (Adak et al, 2016).…”