Combinations of a biofertilizer with micro-dosed chemical fertilizers increased yield of maize in a high acid saturated soil

Kubheka, Bongani Petros; Laing, Mark; Yobo, Kwasi Sackey

doi:10.1016/j.rhisph.2020.100189

Cited by 7 publications

(6 citation statements)

References 24 publications

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“…CBF with a half‐dose of synthetic fertilizer resulted in the highest yield of rice grain compared to CBF or synthetic fertilizer alone (Chittapun et al, 2018). It is likely that by combining synthetic and biofertilizers, plants can take advantage of readily available synthetic N then utilize the more slowly mineralized biofertilizer biomass throughout the growing season (Coppens et al, 2016; Kubheka et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Aboveground and belowground responses to cyanobacterial biofertilizer supplement in a semi‐arid, perennial bioenergy cropping system

Goemann

Gay

Mueller³

et al. 2021

GCB Bioenergy

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The need for sustainable agricultural practices to meet the food, feed, and fuel demands of a growing global population while reducing detrimental environmental impacts has driven research in multi‐faceted approaches to agricultural sustainability. Perennial cropping systems and microbial biofertilizer supplements are two emerging strategies to increase agricultural sustainability that are studied in tandem for the first time in this study. During the establishment phase of a perennial switchgrass stand in SW Montana, USA, we supplemented synthetic fertilization with a nitrogen‐fixing cyanobacterial biofertilizer (CBF) and were able to maintain aboveground crop productivity in comparison to a synthetic only (urea) fertilizer treatment. Soil chemical analysis conducted at the end of the growing season revealed that late‐season nitrogen availability in CBF‐supplemented field plots increased relative to urea‐only plots. High‐throughput sequencing of bacterial/archaeal and fungal communities suggested fine‐scale responses of the microbial community and sensitivity to fertilization among arbuscular mycorrhizal fungi, Planctomycetes, Proteobacteria, and Actinobacteria. Given their critical role in plant productivity and soil nutrient cycling, soil microbiome monitoring is vital to understand the impacts of implementation of alternative agricultural practices on soil health.

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Section: Discussionmentioning

confidence: 99%

Aboveground and belowground responses to cyanobacterial biofertilizer supplement in a semi‐arid, perennial bioenergy cropping system

Goemann

Gay

Mueller³

et al. 2021

GCB Bioenergy

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“…Li et al stated that a biofertilizer, applied for the reduction in a chemical fertilizer input, enhanced banana productivity in an acid soil ecosystem, wherein certain taxa like Chloroflexi were enriched and members of the phyla such as Proteobacteria , Planctomycetes , Acidobacteria , and Gemmatimonadetes were negatively correlated. The use of Bacillus megaterium with microdosing of NPK fertilizer was reported to improve maize yield by up to 54% in different seasons . Soil acidity was shown to be a critical limiting factor for legume growth because it affects the symbiotic effectiveness of the root nodule bacterium, Rhizobium , and the host plant development …”

Section: Introductionmentioning

confidence: 99%

“…The use of Bacillus megaterium with microdosing of NPK fertilizer was reported to improve maize yield by up to 54% in different seasons. 22 Soil acidity was shown to be a critical limiting factor for legume growth because it affects the symbiotic effectiveness of the root nodule bacterium, Rhizobium, and the host plant development. 23 Rhizobium spp.…”

Section: ■ Introductionmentioning

confidence: 99%

Algalization of Acid Soils with Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3 Enriches Bacteria of Ecological Importance

Abinandan

Shanthakumar

Panneerselvan

et al. 2022

ACS Agric. Sci. Technol.

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Acid soils are the degraded (nutrient-poor) soils that generally lack microbial abundance required to promote plant growth. An insight into the microbial diversity in highly acidic soils is crucial from both ecological and environmental standpoints. Previously, we showed that inoculation of acid soils with acid-tolerant microalgae (algalization) significantly improved soil physicochemical and biological characteristics. In the present novel study involving a laboratory microcosm, high-throughput 16S rRNA amplicon sequencing analysis was performed to investigate the bacterial diversity in acid soils algalized with Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3 after 90 days of incubation. Our results on pooled DNA demonstrate that algalization of two acid soils (soil A and B) significantly increased several bacterial genera, and this observation is consistent with Shannon and Chao1 diversity indices. Actinobacteria, Acidobacteria, Firmicutes, and Proteobacteria were the most prevalent phyla enriched in all of the algalized treatments. Interestingly, nonalgalized acid soils favored only Firmicutes and Actinobacteria, but algalization significantly enriched Proteobacteria, Acidobacteria, and Actinobacteria. Canonical correspondence analysis revealed a positive effect of pH in soil A and both pH and organic carbon in soil B on enrichment. Furthermore, soil bacteria of ecological significance that belong to rhizobacteria and diazotrophs, such as Acetobacter, Azospirillum, Bradyrhizobium, Gluconacetobacter, Nitrobacter, Burkholderia, Comamonas, Herbaspirillum, Enterobacter, Nitrosococcus, Brevibacillus, Enterococcus, Frankia, and Anabaena, were greatly enriched in algalized treatments. Thus, we demonstrate here for the first time that algalization of acid soils significantly improves soil health through enrichment of bacteria that are largely implicated in promoting soil health and plant growth.

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“…Chemical fertilizers provide root zone with readily available nutrients that are subject to losses, while biofertilizers increase nutrient uptake by fixing the nutrients that are vulnerable to loss and from outer sources (e.g., N 2 fixing bacteria) or by solubilizing unavailable nutrients (e.g., P and K solubilizing bacteria) (Pawar et al, 2019). Biofertilizers are sources of beneficial soil microorganisms, which enhance plant growth, yield and N use efficiency by increasing the availability and supply of essential nutrients (Kubheka et al, 2020a;Phares et al, 2022). Also, Biofertilizers improve plant resistance to environmental stress, including drought, temperature and saline conditions (Itelima et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Optimizing maize yields using growth stimulants under the strategy of replacing chemicals with biological fertilizers

Abdo

El-Sobky²,

Zhang³

2022

Front. Plant Sci.

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Partial replacement of chemicals with biological fertilizers is a recommended strategy to reduce the adverse environmental effects of chemical fertilizer losses. Enhancing the reduced mineral with biological fertilizers strategy by foliar application of humic acid (HA) and amino acids (AA) can reduce environmental hazards, while improving maize (Zea mays L.) production under semiarid conditions. The recommended doses of N, P and K (e.g., 286 kg N ha-1, 75 kg P2O5 ha-1 and 67 kg K2O ha-1) were applied as the first fertilization level (100% NPK) and were replaced with biofertilizers by 100%, 75%, 50% and 25% as levels of reducing mineral fertilization. These treatments were applied under four foliar applications of tap water (TW), HA, AA and a mixture of HA and AA. Our results reported significant reductions in all parameters, including maize ear yield attributes and grain nutrient uptake, when replacing the mineral NPK with biofertilizers by 25-100% replacement. However, these reductions were mitigated significantly under the application of growth stimulants in the descending order: HA and AA mixture>AA>HA>TA. Applying a mixture of HA and AA with 75% NPK + biofertilizers increased ear length, grain yield, grain uptake of N and K, and crude protein yield by 37, 3, 4, 11 and 7%, respectively as compared with 100% mineral fertilizer only. Moreover, all investigated parameters were maximized under the application of 75% NPK + biofertilizers combined with AA or the mixture of HA and AA, which reveals the importance of growth stimulants in enhancing the reduced chemical NPK strategy. It could be concluded that the mineral NPK rate can be reduced by 25% with biofertilization without any yield losses when combined with HA and AA under arid and semi-arid conditions. That achieves the dual goals of sustainable agriculture by improving yield, while reducing environmental adverse effects.

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Combinations of a biofertilizer with micro-dosed chemical fertilizers increased yield of maize in a high acid saturated soil

Cited by 7 publications

References 24 publications

Aboveground and belowground responses to cyanobacterial biofertilizer supplement in a semi‐arid, perennial bioenergy cropping system

Aboveground and belowground responses to cyanobacterial biofertilizer supplement in a semi‐arid, perennial bioenergy cropping system

Algalization of Acid Soils with Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3 Enriches Bacteria of Ecological Importance

Optimizing maize yields using growth stimulants under the strategy of replacing chemicals with biological fertilizers

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