Safflower root and shoot growth affected by soil compaction

Sarto, Marcos Vinícius Mansano; Bassegio, Doglas; Rosolem, Ciro Antônio; Sarto, Jaqueline Rocha Wobeto

doi:10.1590/1678-4499.2017191

Cited by 29 publications

(23 citation statements)

References 27 publications

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“…In this study, according to the adjusted equation ( Figure 4B), a Q 1/2 value above 1. was observed, which was higher than those obtained by Rosolem et al (2002) for Pennisetum glaucum (0.73 MPa), Sorghum bicolor (0.30 MPa), Crotalaria juncea (0.97 MPa) and Helianthus annuus (0.86 MPa), and by Foloni et al (2006) for Glycine max (1.22 MPa) and Dolichos lablab (1.46 MPa), and close to the values found by Sarto et al (2018) for Carthamus tinctorius L. (1.77 MPa and 1.55 MPa, respectively for the IMA-2106 and IMA-4904 genotypes). Thus, the characterization of soil mechanical impedance, in which 50 % of the root growth is impaired (Q 1/2 index), is a way of measuring the sensitivity of a given species to compaction.…”

Section: Resultssupporting

confidence: 71%

“…In the compacted soil layer (Figure 5B), the average guar radicle diameter increased by 14 %, according to the soil penetration mechanical resistance. Sarto et al (2018) have also observed that the root diameter of Carthamus tinctorius L. (IMA-2106 genotype) increased in the compacted layer, with an increased mechanical penetration resistance. This indicates that compaction promotes root thickening, because of morphophysiological changes in the radicle system after entering the compacted layer (Ramos et al 2010).…”

Section: Resultsmentioning

confidence: 73%

“…A similar behavior has been reported in studies with stubble turnips, black oat and white oat (0.10-1.34 MPa) (Müller et al 2001), Stylosanthes (1.0-1.83 Mg m -3 ) (Castagnara et al 2013), cotton (0.41-1.92 MPa) (Falkoski Filho et al 2013), pearl millet (1.28-1.74 Mg m -3 ) (Guimarães et al 2013) and cover crops (1.10-1.90 Mg m -3 ) (Lima et al 2015). The dry matter production of safflower shoots increased when the penetration resistance level was increased to 0.79 MPa and 0.93 MPa, respectively for the IMA-2106 and IMA-4904 genotypes (Sarto et al 2018). This response occurs because any slight increase in density, in levels of low penetration resistance in loose soil, results in an increased contact between the soil and roots, therefore enhancing the conditions for water and nutrient absorption, without interfering with growth (Müller et al 2001).…”

Section: Resultsmentioning

confidence: 99%

“…Several studies have been conducted using compacted polyvinyl chloride (PVC) rings to determine the tolerance of annual species to soil compaction (Rosolem et al 2002, Castagnara et al 2013, Falkoski Filho et al 2013, Silva et al 2014, Sarto et al 2018. However, little is known about either the agricultural management of guar (Gresta et al 2013) or its sensitivity to soil compaction, although Bowen (1981) indicates that guar is a plant capable of penetrating a compressed zone and forming biochannels, providing a way for new roots to grow through the compacted zone.…”

Section: Palavras-chavementioning

confidence: 99%

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Guar root and shoot growth as affected by soil compaction

Bassegio

Sarto

Rosolem

et al. 2018

Pesqui. Agropecu. Trop.

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Guar (Cyamopsis tetragonoloba L.) is commonly grown in arid lands, because of its high drought-tolerance. However, soil compaction may be a limiting factor to its growth. This study aimed to evaluate the guar growth, according to the soil penetration resistance (0.20 MPa, 0.33 MPa, 0.50 MPa, 0.93 MPa and 1.77 MPa, in a layer with depth between 0.15 m and 0.20 m), in a Rhodic Acrudox soil. The shoot and root dry mass, root length by the Q1/2 index (mechanical soil penetration resistance in which the root growth is reduced by 50 %) and root diameter were evaluated. The impairment of the guar shoot growth begins when the penetration resistance is greater than around 1 MPa. The soil compaction alters the distribution of guar roots in the soil profile, concentrating them in the 0.15 m layer, but it does not prevent roots from penetrating this layer and developing in depth. The root diameter increases in the compacted layer. A soil penetration resistance of up to 1.77 MPa does not influence the root length density below the compacted layer, as well as the total root length density of guar. Although the guar Q1/2 index is greater than 1.58, the shoot and root dry mass are impaired.

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Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Palavras-chavementioning

confidence: 99%

See 2 more Smart Citations

Guar root and shoot growth as affected by soil compaction

Bassegio

Sarto

Rosolem

et al. 2018

Pesqui. Agropecu. Trop.

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“…Safflower (Carthamus tinctorius L.) is an annual oilseed of the Asteraceae family, which can be used as an alternative crop in autumn-winter crop rotation systems because of its tolerance to drought (Santos et al, 2017) and soil compaction (Sarto et al, 2018). The crop shows productive potential, easy adaptability, and good resource use in clay and sandy soils (Santos et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Initial growth and agronomic performance of some important North American safflower cultivars

et al. 2019

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North American safflower cultivars can be considered as alternatives for cultivation in light of the limited improvement in the commercially grown and registered cultivars in Brazil. This study aimed to evaluate the initial growth and agronomic performance of North American safflower cultivars in Brazil. The experimental design for North American cultivars included random blocks with six cultivars (S-351, 3307, 8311, 0260, 0210 and S-323) and six replicates. The emergence percentage, emergence speed index, average emergence time, and average emergence speed were determined at 15 days after emergence (DAE). Plant height, stem diameter, number of leaves per plant, fresh plant mass, and dry plant mass were determined at 30 DAE. Plant height, stem diameter, number of branches, number of chapters, number of leaves, fresh plant mass, dry plant mass, fresh root mass, and dry root mass were determined at the flowering stage. The final plant density, number of chapters per plant, 100-grain weight, grain yield, oil content, and protein content were determined at the harvest stage. Cultivar S-351 had the greatest initial growth and exhibited greater emergence and emergence speed index. At 30 DAE, the cultivars did not differ with respect to the accumulation of dry mass and number of leaves. During flowering, cultivars S-323 and 8311 had greater accumulation of plant and root dry mass, as well as a greater number of leaves, branches, and chapters. Cultivars 210 and 260 had higher grain yield, whereas cultivars 3307 and S-323 had higher oil content, and cultivar S-351 had higher protein content.

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Maize and sorghum root growth and yield when intercropped with forage grasses

Sarto

Borges²,

Bassegio

et al. 2021

Agronomy Journal

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Integrated crop–livestock systems that intercrop forage crops with grain crops are effective for increasing forage production and improving nutrient cycling and soil health. However, the potential for root competition when maize (Zea mays L.) and sorghum [Sorghum bicolor (L.) Moench] are intercropped with forages in sandy soils is unknown. The objectives of this study were (a) to evaluate the root growth and production characteristics of maize and sorghum intercropped with forage grasses and (b) quantify above‐ and belowground biomass in a tropical integrated cropping system. Two 3‐yr experiments were conducted in which maize and sorghum were intercropped with forage grasses: guineagrass (Panicum maximum Jacq.), ruzigrass [Urochloa ruziziensis (Germ. & Evrard) Crins], palisade grass [Urochloa brizantha (Hochst ex A. Rich.) R. Webster], or an Urochloa hybrid. Monocropped maize and sorghum were used as controls. Fine roots (≤3 mm) were sampled in the monocropped and intercropped systems at soil depths of 1.0 m. Intercropping guineagrass and palisade grass with maize and sorghum resulted in 40% greater dry matter production than intercropping with ruzigrass and the Urochloa hybrid. The positive effect of intercropping forage grasses in the low‐fertility sandy soil was greater for sorghum than for maize because of lower root growth competition. On average, intercropping maize and sorghum with forages increased the total above‐ and belowground biomass by 30 and 50%, respectively, compared with monocropping. In summary, intercropping maize and sorghum with forage grasses is a viable option to enhance biomass during the off‐season in tropical integrated crop–livestock systems.

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Safflower root and shoot growth affected by soil compaction

Cited by 29 publications

References 27 publications

Guar root and shoot growth as affected by soil compaction

Guar root and shoot growth as affected by soil compaction

Initial growth and agronomic performance of some important North American safflower cultivars

Maize and sorghum root growth and yield when intercropped with forage grasses

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