Risk of Occurrence of Water Deficit in Soybean Cultivated in Lowland Soils

Bortoluzzi, Mateus Possebon; Heldwein, Arno Bernardo; Trentin, Roberto; Maldaner, Ivan Carlos; Silva, Jocélia Rosa da

doi:10.1175/ei-d-19-0029.1

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…In particular, the high temperatures and the missing precipitation in June 2017 affected soybean growth in a critical phase before flowering. Bortoluzzi et al (2020), Grassini et al (2015), and Karam et al (2005) have shown that drought stress can significantly reduce soybean grain yield. Cover crop treatments resulted in decreased soybean grain yield, filled pods plant −1 , pod density, grain density, LAI, and plant height for kidney vetch and ryegrass and for grain yield pod −1 after corn cockle in 2016 and in 2017.…”

Section: Soybean Yield Components Plant Growth and Weather Conditionsmentioning

confidence: 99%

Cover crops affect soybean yield components, but not grain quality

et al. 2022

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Cover cropping is mainly used to prevent soil erosion, but the effects of individual cover crops on the subsequent soybean [Glycine max (L.) Merr.] are hardly known.Therefore, two annual field trials with 15 cover crop species and bare fallow as control were conducted in semi-arid East Austria in 2016 and 2017. Cover crops were sown in July in 3-× 10-m plots in a randomized block design with three replicates and were incorporated in mid-April before soybean were seeded. Cover crop biomass differed between plant species and year (2016, 626 ± 390; 2017, 84 ± 86.1 g m −2 ). Aboveground cover crop biomass did not affect soybean establishment, but single cover crop species such as ryegrass (Lolium multiflorum Lam. var. westerwoldicum Wittm.), kidney vetch (Anthyllis vulneraria L.), and corn cockle (Agrostemma githago L.) impeded soybean seeding due to high root densities and prevented germination or fostered outbreak of two-spotted spider mites (Tetranychus urticae Koch). These three cover crops reduced soybean grain yield by 12-84%. Grain yield was a function of grain density m −2 in a three-way interaction with year and cover crop treatment, but not by plant or pod density. Protein, oil, and sucrose content of soybean were unaffected by cover crop treatments. Overall, with the exception of ryegrass, kidney vetch, and corn cockle, cover crops can be grown ahead of soybean without any yield loss and can be used for their versatile ecosystem services.

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Section: Soybean Yield Components Plant Growth and Weather Conditionsmentioning

confidence: 99%

Cover crops affect soybean yield components, but not grain quality

et al. 2022

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“…Soybean is mainly grown in tropical, subtropical, and temperate regions ( FAO, 2021 ). It is very sensitive to water scarcity and suffers greatly in terms of growth and development under water deficit conditions ( Bortoluzzi et al., 2020 ). Consequently, global warming and changes in precipitation patterns pose a significant threat to soybean production, especially in areas lacking of rainwater or irrigation ( Cotrim et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Physiological mechanism of melatonin attenuating to osmotic stress tolerance in soybean seedlings

et al. 2023

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Drought is one of the most significant abiotic stress threatening to crop production worldwide. Soybean is a major legume crop with immense economic significance, but its production is highly dependent on optimum rainfall or abundant irrigation. As the global climate changes, it is more important to find solutions to make plants more resilient to drought. The prime aimed of the study is to investigate the effect of melatonin on drought tolerance in soybean and its potential mechanisms. Soybean seedlings were treated with 20% polyethylene glycol 6000 (PEG 6000) and subjected to osmotic stress (14 days) with or without 100 μM melatonin treatment. Our results revealed that melatonin supplementation significantly mitigated PEG-induced growth retardation and increased water absorption ability. Foliar application of melatonin also increased gas exchange and the chlorophyll fluorescence attributes by the mitigation of the osmotic-induced reduction of the reaction activity of photosystems I and II, net photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), electron transport activity, and photosynthetic efficiency. In addition, PEG-induced elevated production of reactive oxygen species (ROS) and malondialdehyde (MDA) content were significantly reversed by melatonin treatment. Equally important, melatonin boosted the antioxidant activities of soybean plants. Moreover, osmotic stress substantially increased abscisic acid (ABA) accumulation in roots and leaves, while melatonin-received plant leaves accumulated less ABA but roots content higher ABA. Similarly, melatonin significantly suppressed ABA biosynthesis and signaling gene expression in soybean exposed to drought stress. Furthermore, osmotic stress significantly suppressed plasmalemma (GmPIPs) and tonoplast aquaporin (GmTIPs) genes expression, and their transcript abundance was up-regulated by melatonin co-addition. Taken together, our results indicated that melatonin potentially improves drought tolerance of soybean through the regulation of ABA and aquaporin gene expression, increasing photosynthetic efficiency as well as enhancing water uptake efficiency.

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“…These lowland soils are limited by the natural drainage process because coupled with the relief that is unfavorable to surface runoff, the low atmospheric demand for water vapor, and the more abundant autumn/winter rainfall, cause waterlogging to become more frequent and prolonged (Bortoluzzi, Heldwein, Trentin, Maldaner, & Silva, 2020;Goulart, Reichert, & Rodrigues, 2020). Soil waterlogging compromises gas exchange in the root system, primarily oxygen and CO 2 (Ploschuk, Miralles, Colmer, Ploschuk, & Striker, 2020).…”

Section: Introductionmentioning

confidence: 99%

Modification of canola cultivation conditions in a waterlogging-susceptible subtropical environment

Schaefer,

Nied,

Heldwein

et al. 2023

Acta Sci. Agron.

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Waterlogging directly interferes with the production capacity of agricultural crops in response to the morphophysiological changes caused to plants. Since the cultivation of poorly drained soils is traditionally avoided, this study aimed to evaluate the possibility of expanding canola cultivation into waterlogged soils using soil surface drainage and different row spacings in lowland areas of Rio Grande do Sul, Brazil. Treatments consisted of the presence and absence of surface drains at 0.25 m depth and row spacings of 0.17, 0.34, 0.51, and 0.68 m arranged in two-factorial randomized blocks with four replications, in 2018 and 2019. In this study, growth traits, yield components, and the final grain yield of canola were evaluated. The increase in lateral branching in canola plants was found to be directly related to waterlogging and negatively affected yield. The use of drains positively impacted the number of pods per plant, seeds per pod, the 1,000 seeds weight, and grain yield. The more intense waterlogging conditions in 2018 resulted in the highest grain yield and superior production traits were obtained with row spacings between 0.41 and 0.48 m. In the absence of waterlogging, the 0.17 m row spacing was more productive. Canola cultivation can occur in waterlogged soils in the presence of surface drainage and at row spacings ranging from 0.40 to 0.50 m.

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Risk of Occurrence of Water Deficit in Soybean Cultivated in Lowland Soils

Cited by 6 publications

References 28 publications

Cover crops affect soybean yield components, but not grain quality

Cover crops affect soybean yield components, but not grain quality

Physiological mechanism of melatonin attenuating to osmotic stress tolerance in soybean seedlings

Modification of canola cultivation conditions in a waterlogging-susceptible subtropical environment

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