Ruzigrass root persistence and soybean root growth

Rosolem, Ciro Antônio; Neto, Leontino Oliveira; Costa, Vladimir Eliodoro; Grassmann, Camila da Silva

doi:10.1007/s11104-019-04198-4

Cited by 15 publications

(8 citation statements)

References 35 publications

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“…Water deficits can often limit the growth and development of the crops, particularly if the deficit occurs during periods of flowering or pod-fill (Fioreze, Pivetta, Fano, Machado, & Guimarães, 2011), which is what occurred during the first two cropping seasons. Several studies have reported the benefits of brachiaria ruziziensis on the yield of soybean (Balbinot et al, 2017;Correia, Leite, & Fuzita, 2013;Rosolem, Neto, Costa, & Grassmann, 2019), specifically improvements in production due to the high residues and roots generated by the plant. The direct benefits of soil cover on crop yields are well known and involve a reduction in thermal amplitude (Altieri et al, 2011); a decrease in soil, water, and nutrient losses from erosion (Dechen, Telles, Guimaraes, & De Maria, 2015;Engel et al, 2009); a decrease in weed infestations, particularly in weeds with herbicide resistance, such as horseweed (Conyza bonariensis) and sourgrass (Digitaria insularis; Correia et al, 2013); a break in disease cycles; and a reduction in pest infestations (Larkin, 2015).…”

Section: Crop Yieldmentioning

confidence: 99%

“…The direct benefits of soil cover on crop yields are well known and involve a reduction in thermal amplitude (Altieri et al, 2011); a decrease in soil, water, and nutrient losses from erosion (Dechen, Telles, Guimaraes, & De Maria, 2015;Engel et al, 2009); a decrease in weed infestations, particularly in weeds with herbicide resistance, such as horseweed (Conyza bonariensis) and sourgrass (Digitaria insularis; Correia et al, 2013); a break in disease cycles; and a reduction in pest infestations (Larkin, 2015). Likewise, the planting of species with abundant and deep root systems, such as brachiaria ruziziensis, increases nutrient cycling (Rosolem et al, 2019). With respect to soybean, we found that growing brachiaria ruziziensis in the winter period is not necessary every year and can be rotated with second crop maize.…”

Section: Crop Yieldmentioning

confidence: 99%

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Profitability of soybean production models with diversified crops in the autumn–winter

et al. 2020

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In Brazil, soybean (Glycine max L.) have been grown in production systems with a low plant species diversification. However, these systems are becoming less efficient and sustainable. This study therefore evaluated the profitability of soybean production systems as a function of the degree of diversification of crops grown in the winter period. We conducted an experiment in Paraná state, Brazil, over 6 yr, under no-tillage. The crop rotation systems included soybean, wheat (Triticum aestivum L.), and combinations of tropical forage crops, either planted independently or intercropped with maize (Zea mays L.) in the winter. We evaluated the crop yields, gross revenue, total operating cost, gross margin, and profit of each production model. Diversified crop rotation systems increase crop yields and profit compared with the maize-soybean system. The most interesting crop rotations with respect to yield and profit proved to be those that substituted second crop maize for brachiaria ruziziensis (Urochloa ruziziensis) grass as a cover crop every 3 yr or intercropped second crop maize with brachiaria ruziziensis.

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Section: Crop Yieldmentioning

confidence: 99%

Section: Crop Yieldmentioning

confidence: 99%

Profitability of soybean production models with diversified crops in the autumn–winter

et al. 2020

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“…In addition, the plant's secondary functions, such as nutrient storage, reproduction, dispersal, and synthesis of growth factors, are also supported by the roots [11]. Despite its limitations, some progress has been made in enhancing the nutrient absorption efficiency of the legume root system architecture [12][13][14]. Although roots play an essential role in plant life, there are several reasons for the scarcity of studies explicitly assessing root features.…”

Section: Introductionmentioning

confidence: 99%

High-Throughput Root Imaging Analysis Reveals Wide Variation in Root Morphology of Wild Adzuki bean (Vigna angularis) Accessions

Tayade

Kim

Tripathi

et al. 2022

Plants

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Root system architecture and morphological diversification in wild accessions are important for crop improvement and productivity in adzuki beans. In this study, via analysis using 2-dimensional (2D) root imaging and WinRHIZO Pro software, we described the root traits of 61 adzuki bean accessions in their early vegetative growth stage. These accessions were chosen for study because they are used in Korea’s crop improvement programs; however, their root traits have not been sufficiently investigated. Analysis of variance revealed a significant difference between the accessions of all measured root traits. Distribution analysis demonstrated that most of the root traits followed normal distribution. The accessions showed up to a 17-fold increase in the values in contrasting accessions for the root traits. For total root length (TRL), the values ranged from 82.43 to 1435 cm, and for surface area (SA), they ranged from 12.30 to 208.39 cm2. The values for average diameter (AD) ranged from 0.23 to 0.56 mm. Significant differences were observed for other traits. Overall, the results showed that the accession IT 305544 had the highest TRL, SA, and number of tips (NT), whereas IT 262477 and IT 262492 showed the lowest values for TRL, SA, and AD. Principal component analysis showed an 89% variance for PC1 and PC2. K-mean clustering explained 77.4% of the variance in the data and grouped the accessions into three clusters. All six root traits had greater coefficients of variation (≥15%) among the tested accessions. Furthermore, to determine which root traits best distinguished different accessions, the correlation within our set of accessions provided trait-based ranking depending on their contribution. The identified accessions may be advantageous for the development of new crossing combinations to improve root features in adzuki beans during the early growth stage. The root traits assessed in this study could be attributes for future adzuki bean crop selection and improvement.

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“…By contrast, ruzigrass depleted both soil Ke and Kne (Figure 3), even when fertilized with K, certainly due to its high cycling capacity [29]. Plants with more prolific root systems are more efficient in absorbing K from less soluble fractions, and root systems with a larger surface area, such as those of grasses [56], may exude organic anions into a larger volume of the soil [15,57] and thus remove more K from these fractions.…”

Section: Discussionmentioning

confidence: 99%

Potassium Bioavailability in a Tropical Kaolinitic Soil

et al. 2021

Self Cite

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Some plant species are able to acquire non-exchangeable forms of K, which improve K availability and cycling in cropping systems, and which may explain the lack of response to K. However, this would not be expected in soils dominated by kaolinite. The aim of this study was to assess non-exchangeable K (Kne) use by three selected plant species grown in a tropical Haplic Plinthosol with low exchangeable K (Ke). A greenhouse experiment was conducted with soybean (Glycine max L., Merr.), maize (Zea mays L.), and ruzigrass (Urochloa ruziziensis) with or without K fertilization for three growing cycles. The crop treatments were compared with a control without plants. In the absence of K fertilization, all the tested plants were able to use non-exchangeable K and non-exchangeable K contributed more than 80% of the K demand of the plants in the first growing cycle, even in this kaolinitic soil. In the first growing cycle, soybean and maize took up more non-exchangeable K than ruzigrass, concomitant with higher dry matter yields. Over the three crop cycles, as both biomass yield and K uptake decreased in the unfertilized systems, the dependence of plants on non-exchangeable K decreased. Unfertilized ruzigrass showed a strong ability to acquire non-exchangeable K from the soil. Over the course of three growing cycles, K application decreased the absolute uptake of non-exchangeable K as well as its fractional contribution to total K uptake by the crops.

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Ruzigrass root persistence and soybean root growth

Cited by 15 publications

References 35 publications

Profitability of soybean production models with diversified crops in the autumn–winter

Profitability of soybean production models with diversified crops in the autumn–winter

High-Throughput Root Imaging Analysis Reveals Wide Variation in Root Morphology of Wild Adzuki bean (Vigna angularis) Accessions

Potassium Bioavailability in a Tropical Kaolinitic Soil

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