Variable impact of rice (Oryza sativa) on soil metal reduction and availability of pore water Fe2+and Mn2+throughout the growth period

Haque, K M Shamsul; Eberbach, Philip; Weston, Leslie A.; Dyall‐Smith, Mike; Howitt, Julia

doi:10.1080/02757540.2015.1122000

Cited by 21 publications

(7 citation statements)

References 50 publications

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“…The available Fe concentration in a lowland rice field soil was 0.959 mg kg –1 when the field was flooded but only 0.104 mg kg –1 after 5 yr of aerobic cultivation (Takahashil et al, 1999). Although the total amount of Fe in the rhizosphere soil is often 10,000 times greater than the Fe content of the plant itself, Fe deficiency is still common in agricultural production (Haque et al, 2016). This anomaly is due to low availability of Fe in the presence of oxygen, which is prevalent under aerobic soil condition (Graham and Stangoulis, 2003; Kobayashi et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Application of Phosphorus, Iron, and Silicon Reduces Yield Loss in Rice Exposed to Water Deficit Stress

et al. 2019

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A foremost challenge in rice (Oryza sativa L.) production is to identify suitable nutrient management strategy for reducing yield loss under water deficit stress (WDS) condition. This study investigated the interactive effects of water regime and nutrient management on grain yield and stress metabolites. Accordingly, a 2-yr field experiment in factorial design with two levels of water management (i) well watered (WW; maintaining 5 ± 2 cm standing water) and (ii) water deficit stressed (WDS) to -60 kPa and two levels of supplementary P, Fe, and Si application was conducted. As compared to WW condition, WDS saved 52 and 46% irrigation water in 2014 and 2015 respectively, however the grain yield decreased by 32-34% under WDS as compared to WW. Application of P, Fe, and Si under WDS condition significantly increased grain yield by 7, 9, and 12%, respectively. Reduced relative water content and increased activity of osmolyte (proline) and antioxidant metabolites (catalase and peroxidase) due to application of P, Fe, and Si contributed to tolerate the WDS, which resulted in higher grain yield. Due to absence of significant interaction between P, Fe, and Si on grain yield, there was no significant advantage of application of more than one of these nutrients together. The results indicate that, application of P, Fe, and Si can increase rice grain yield and can reduce the yield loss under WDS as compared to WW condition in silt loam textured soil in Eastern India.

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Section: Discussionmentioning

confidence: 99%

Application of Phosphorus, Iron, and Silicon Reduces Yield Loss in Rice Exposed to Water Deficit Stress

et al. 2019

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“…Rahman and Chikushi [47] reported the presence of significant residual soil moisture after rice harvest because of the presence of the mat of rice roots. Others have also observed that post-rice soils could be enriched by higher concentrations of toxic metals (particularly Mn 2+ ) [48,49], which could potentially inhibit the growth of succeeding crops. In this field study, legumes were sown at approximately six weeks after rice harvest, which may have diminished the possibility of Mn 2+ toxicity due to anaerobic soil conditions.…”

Section: Growth and Yield Of Grain Legumes In Post-rice Soilmentioning

confidence: 99%

Weed Suppression and Performance of Grain Legumes Following an Irrigated Rice Crop in Southern Australia

et al. 2016

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Post-rice irrigated soils offer several potential advantages for the growth of subsequent crops, but Australian producers have often been reluctant to grow grain legumes immediately following a rice crop due to physico-chemical constraints. A field experiment was thus conducted to explore the potential for producing grain legumes following rice in comparison to those following a fallow during 2012 and 2013. Two grain legumes, field pea and faba bean, were sown 5, 7 and 12 weeks after rice harvest in 2013 at Yanco, NSW, and plant growth indicators and grain yield were compared. Early sowing of field pea following rice gave the best outcome, with plants flowering three weeks earlier and yielding 1330 kg·ha −1 more grain than after fallow. In contrast, faba bean yield was 35 kg·ha −1 less after rice than after fallow across the three sowing dates. Higher pea yield was consistent with the early emergence of seedlings, higher light interception and overall greater plant growth following rice. Post-rice crops also had 10-fold less weed infestation than crops in a similarly-established fallow treatment and, thus, required far less weed management. Legume crops sown at the later seeding date had significantly reduced (~50%-60%) yields compared to those of the first two sowings; this is most likely a reflection of reduced temperatures and day lengths experienced during vegetative and reproductive growth phases.

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“…The accumulated reductive substances cause less tillering, shorter roots, death of small tillers in the tillering stage, and ultimately crop failure. This phenomenon is exacerbated by the anaerobic degradation of straw (Becker & Asch, 2005; Haque et al., 2016; Wang et al., 2019). When the concentration of Fe 2+ exceeds the threshold of 300 mg kg −1 , it can cause toxicity to rice seedlings, leading to a significant reduction in plant height, dry matter accumulation, and the soil and plant analyser development (SPAD) value of rice.…”

Section: Introductionmentioning

confidence: 99%

Effect of optimal nitrogen application and mid‐season drainage on rice root activity and reductive substances in straw‐incorporated paddy

Li,

Zhang,

et al. 2024

Soil Use and Management

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The straw incorporation in paddy fields exacerbates the reductive toxicity caused by flooding during the rice tillering stage in cold regions. Mid‐drainage can alleviate reductive toxicity, while nitrogen fertilizer (NF) application can enhance the drought resistance of rice. However, there is still a lack of convincing evidence about the types of reductive toxicity and appropriate draining thresholds with straw incorporation. A field experiment was conducted in northeast China to investigate the reductive toxicity of paddy fields caused by flooding and straw incorporation. Primarily, the study aimed to investigate the reduction of toxicity caused by straw incorporation. Additionally, the investigation verified the role of varying NF (0, 50, 100, 150 kg N ha−1) in conjunction with mid‐season drainage (−15 cm) to mitigate soil reductive toxicity while preserving root activity. Before mid‐season drainage, the contents of soil total amount of reductive matter, active reductive matter, Fe2+, and Mn2+ were 5.1–5.9 cmol kg−1, 3.2–3.9 cmol kg−1, 399.4–410.1 mg kg−1 and 290.3–340.1 mg kg−1, respectively. Mid‐season drainage of 15 cm depth decreased the total amount of reductive matter, active reductive matter and Fe2+ content by 51.8%, 56.0% and 29.6%, respectively. However, upon rewetting, the content of reductive substances reverted to pre‐drainage levels. Drainage led to a reduction in soil organic acid content by 56.6–78.8% and an increase in rice root activity by 160–290%. While increased NF application correlated with higher rice root activity, a significant yield increase was only observed within the range of 0–100 kg ha−1. In summary, an alternate wetting and drying threshold of −15 cm in combination with 100 kg ha−1 of NF rate significantly increased root activity and reduced reductive toxicity of the tillage layer without decreased rice yield. The reductive substance content rebounded to the pre‐drainage level after reflooding in the subsequent growth stage. Therefore, to minimize the reductive toxicity and methane emission caused by straw incorporation, rice fields can be drained to a depth of 15 cm during mid‐season drainage. Additionally, the fields should be drained several times in the following growth stage.

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Variable impact of rice (Oryza sativa) on soil metal reduction and availability of pore water Fe²⁺and Mn²⁺throughout the growth period

Cited by 21 publications

References 50 publications

Application of Phosphorus, Iron, and Silicon Reduces Yield Loss in Rice Exposed to Water Deficit Stress

Application of Phosphorus, Iron, and Silicon Reduces Yield Loss in Rice Exposed to Water Deficit Stress

Weed Suppression and Performance of Grain Legumes Following an Irrigated Rice Crop in Southern Australia

Effect of optimal nitrogen application and mid‐season drainage on rice root activity and reductive substances in straw‐incorporated paddy

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