The Role of Legume-Rhizobium Symbiosis in Sustainable Agriculture

Ohyama, Takuji

doi:10.1007/978-3-319-55729-8_1

Cited by 27 publications

(21 citation statements)

References 12 publications

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“…e supply of N by symbiotic N 2 fixation by legume-rhizobium symbiosis is still the most important N source in agroecosystems [1]. e world population is rapidly increasing especially in developing countries, and world food production needs to be increased with the demand for human consumption [1]. However, the increase in the cultivated area is difficult, so we need to promote crop production per area and the efficient and sustainable use of croplands.…”

Section: Introductionmentioning

confidence: 99%

“…However, the increase in the cultivated area is difficult, so we need to promote crop production per area and the efficient and sustainable use of croplands. e wide use of chemical nitrogen fertilizers promoted crop production by 4-10 times in the past one hundred years and could support the food production for increasing world population [1]. However, the cost of chemical N fertilizers is expensive for small farmers in developing countries, and the fertilizer production requires a lot of fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

“…However, the cost of chemical N fertilizers is expensive for small farmers in developing countries, and the fertilizer production requires a lot of fossil fuels. In addition, it was noticed that an inappropriate or excess application of chemical N fertilizers causes environmental problems, such as groundwater contamination by nitrate leaching, air pollution, and global warming by nitrous oxide emission [1].…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Hatano

Fujita

Nagumo

et al. 2019

International Journal of Agronomy

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The deep placement of urea fertilizer (DMU) containing 1% (W/W) of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on soybean growth and seed yield was as effective as those of the coated urea (CU) and lime nitrogen (LN) in a field research. The average seed yields were high in LN (464 g·m−2) and DMU (461 g·m−2) and relatively low in CU (405 g·m−2), U (396 g·m−2), and Cont (373 g·m−2) treatments. The accumulations of dry matter and nitrogen in soybean shoots were higher in the plants with deep placement of CU, LN, and DMU than U and Cont. The daily nitrogen fixation activity and daily nitrogen absorption rate were calculated based on the relative ureide method. Both nitrogen fixation activity and nitrogen absorption rate were higher in DMU, CU, and LN compared with control treatment, suggesting that the deep placement of DMU did not repress nitrogen fixation. Soil incubation test was performed using the same field soil with DMU, U, LN, and urea with DMPP 1%, 2%, and 4%. DMU inhibits nitrification similar to the pattern of LN until 8 weeks. The increasing DMPP concentration did not markedly increase the nitrification inhibition. From these results, it was concluded that urea fertilizer with 1% DMPP is efficient for deep placement of N fertilizer for soybean cultivation due to its lower price compared with CU and LN.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Hatano

Fujita

Nagumo

et al. 2019

International Journal of Agronomy

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“…World population increases rapidly and global food production must be adapted to the requirements of human consumption. To increase the cultivated land area would be very difficult, so it is necessary to promote crop production or the efficient use of existing croplands [22].…”

Section: Role Of Pulse Crop Intercropping With Wheatmentioning

confidence: 99%

Review on: Role of Pulse Intercropping for Hindering Rust Disease and Improving Yield of Wheat (<i>Triticum aestivum</i> L.)

Gebeyaw¹

2020

ABB

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Wheat is the third most produced cereal in the world after maize and rice. Due to ever increasing human population and decreased area under cultivation, there is a pressure on limited land resource to meet basic demands of increased population towards food, fodder, pulses, oilseeds etc. The potential to increase arable cropping area is severely limited without significant environmental implications; the way to solving the problem is a sustainable intensification through a re invigoration of yield improvement by either genetic progress or optimization of cropping systems. Having this idea in mind, it can be conclude that, intercropping systems have the scope and potential to exceed the yields impossible in monocultures of their component species and hindering variety of disease development such as rust. It provides a variety of returns from land and labour to the farmers, often increases the efficiency with which scarce resources are used and reduces the failure risk of a single crop that is susceptible to environmental and economic fluctuations. Cropping system based on carefully designed species mixtures reveal many potential advantages interims of enhancing crop productivity, reducing pest and disease, and enhancing ecological service. Therefore it can be recommended that intercropping wheat with pulse crop is a desirable agronomic practice towards boosting of yield and prevention of disease incidence such as rust.

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“…Collectively, the legume-rhizobia symbiosis contributes over 40 million tons of N per year to agricultural systems (Herridge et al 2008). Thus, the contribution of N by symbiotic fixation via the legume-rhizobia symbiosis is the most important source of N in agroecosystems (Ohyama 2017).…”

Section: Introductionmentioning

confidence: 99%

Exopolysaccharide production in Ensifer meliloti laboratory and native strains and their effects on alfalfa inoculation

et al. 2019

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Bacterial surface molecules have an important role in the rhizobia-legume symbiosis. Ensifer meliloti (previously, Sinorhizobium meliloti), a symbiotic Gram-negative rhizobacterium, produces two different exopolysaccharides (EPSs), termed EPS I (succinoglycan) and EPS II (galactoglucan), with different functions in the symbiotic process. Accordingly, we undertook a study comparing the potential differences in alfalfa nodulation by E. meliloti strains with differences in their EPSs production. Strains recommended for inoculation as well as laboratory strains and native strains isolated from alfalfa fields were investigated. This study concentrated on EPS-II production, which results in mucoid colonies that are dependent on the presence of an intact expR gene. The results revealed that although the studied strains exhibited different phenotypes, the differences did not affect alfalfa nodulation itself. However, subtle changes in timing and efficacy to the effects of inoculation with the different strains may result because of other as-yet unknown factors. Thus, additional research is needed to determine the most effective inoculant strains and the best conditions for improving alfalfa production under agricultural conditions.

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The Role of Legume-Rhizobium Symbiosis in Sustainable Agriculture

Cited by 27 publications

References 12 publications

Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Review on: Role of Pulse Intercropping for Hindering Rust Disease and Improving Yield of Wheat (<i>Triticum aestivum</i> L.)

Exopolysaccharide production in Ensifer meliloti laboratory and native strains and their effects on alfalfa inoculation

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The Role of Legume-Rhizobium Symbiosis in Sustainable Agriculture

Cited by 27 publications

References 12 publications

Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Review on: Role of Pulse Intercropping for Hindering Rust Disease and Improving Yield of Wheat (&lt;i&gt;Triticum aestivum&lt;/i&gt; L.)

Exopolysaccharide production in Ensifer meliloti laboratory and native strains and their effects on alfalfa inoculation

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Product

Resources

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Review on: Role of Pulse Intercropping for Hindering Rust Disease and Improving Yield of Wheat (<i>Triticum aestivum</i> L.)