Plant and row spacing effects on soil water and yield of rainfed summer soybean in the northern China

Zhou, X. B.; Yang, G.M.; Sun, Shi; Chen, Y.H.

doi:10.17221/73/2009-pse

Cited by 16 publications

(11 citation statements)

References 22 publications

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“…They reported that plants produced at higher densities were taller, lodged more, were more sparsely branched, set fewer pods and seed than those plants at lower densities. Similarly, [160] observed that plant and row spacing improve WUE and yield components in soybean. Agajie et al [161] studied the effect of spacing on yield components and yield of chickpea.…”

Section: Management Strategiesmentioning

confidence: 93%

Research Progress and Perspective on Drought Stress in Legumes: A Review

Nadeem

Yahya

et al. 2019

IJMS

292

176

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Climate change, food shortage, water scarcity, and population growth are some of the threatening challenges being faced in today’s world. Drought stress (DS) poses a constant challenge for agricultural crops and has been considered a severe constraint for global agricultural productivity; its intensity and severity are predicted to increase in the near future. Legumes demonstrate high sensitivity to DS, especially at vegetative and reproductive stages. They are mostly grown in the dry areas and are moderately drought tolerant, but severe DS leads to remarkable production losses. The most prominent effects of DS are reduced germination, stunted growth, serious damage to the photosynthetic apparatus, decrease in net photosynthesis, and a reduction in nutrient uptake. To curb the catastrophic effect of DS in legumes, it is imperative to understand its effects, mechanisms, and the agronomic and genetic basis of drought for sustainable management. This review highlights the impact of DS on legumes, mechanisms, and proposes appropriate management approaches to alleviate the severity of water stress. In our discussion, we outline the influence of water stress on physiological aspects (such as germination, photosynthesis, water and nutrient uptake), growth parameters and yield. Additionally, mechanisms, various management strategies, for instance, agronomic practices (planting time and geometry, nutrient management), plant growth-promoting Rhizobacteria and arbuscular mycorrhizal fungal inoculation, quantitative trait loci (QTLs), functional genomics and advanced strategies (CRISPR-Cas9) are also critically discussed. We propose that the integration of several approaches such as agronomic and biotechnological strategies as well as advanced genome editing tools is needed to develop drought-tolerant legume cultivars.

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Section: Management Strategiesmentioning

confidence: 93%

Research Progress and Perspective on Drought Stress in Legumes: A Review

Nadeem

Yahya

et al. 2019

IJMS

292

176

View full text Add to dashboard Cite

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“…The plants compete with each other for light, water and nutrients. Gaseous exchange between the crop and atmosphere depends on the canopy architecture of plants (Zhou et al, 2010).…”

Section: Harvest Index and Biomass Weightmentioning

confidence: 99%

Soybean managıng for maxımıze productıon: plant populatıon densıty effects on seed yıeld and some agronomıcal traıts ın maın cropped soybean productıon

Güllüoğlu¹,

Bakal²,

Sabagh³

et al. 2017

JEBAS

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Plant density is an essential agronomic practice and affects the productivity of crops. Hence, the optimum plant density to achieve the maximum productivity may vary from crop to crop, genotype to genotype and location to location. Therefore, the current research has been carried out for two consecutive seasons of 2013 and 2014 at the research station of Cukurova University and, the aim of the study was to determine the effect of plant density on seed yield and some agronomical traits in main cropped soybean production. Results of study revealed that seed yield of soybean depends on plant density and highest seed yield (5820.8 kg ha -1 ) was obtained from the 70 cm x 4 cm spacing, while the lowest mean values (3804.5 kg ha -1

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“…For such layer widths and at L-band, no azimuthal brightness temperature variations are expected. However, two points need to be taken into account: Firstly, 18-19 cm row widths are not uncommon for soybean stands [47][48][49] and have been reported in previous studies for corn stands (although uncommon) [49]. Under extreme conditions such as highly localized irrigation, such row spacings might result in soil moisture patterns of ∼ 9-10 cm layer widths.…”

Section: Permittivity Patterns In Real-world Scenariosmentioning

confidence: 94%

Impact of Permittivity Patterns on Fully Polarimetric Brightness Temperature Signatures at L-Band

Link¹,

Montzka²,

Jagdhuber³

et al. 2019

PIER

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This study investigates the sensitivity of L-band (1.41 GHz) polarimetric brightness temperature signatures to oriented permittivity patterns, which can occur for example in the case of row and interrow soil moisture differences in agricultural fields. A field experiment and model simulations are conducted to verify the effects of such patterns on all four Stokes parameters. We find that for an artificial target resembling idealized model conditions, permittivity patterns lead to systematic brightness temperature modulations in dependency of the azimuthal look angle. For the specific field setup, modulations reach amplitudes of ∼ 4 K and mostly affect h-polarized brightness temperatures as well as the first, second, and third Stokes parameters. Simulations of soil moisture patterns under idealized model conditions indicate even higher amplitudes (up to 60 K for extreme cases). However, the effects occur only for permittivity layer widths of up to 8 cm (given the observing wavelength of 21 cm), which is lower than the row and interrow widths typically observed in agricultural settings. For this reason, and due to the idealized model geometry investigated here, future studies are needed to transfer the findings of this study to potential applications such as the sensing of oriented soil moisture patterns. Particular interest might lie in radiometry and reflectometry in lower frequency ranges such as P-band, where according to the threshold established here (8/21 wavelengths), permittivity layer widths of up to ∼ 45 cm could be observed.

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Plant and row spacing effects on soil water and yield of rainfed summer soybean in the northern China

Cited by 16 publications

References 22 publications

Research Progress and Perspective on Drought Stress in Legumes: A Review

Research Progress and Perspective on Drought Stress in Legumes: A Review

Soybean managıng for maxımıze productıon: plant populatıon densıty effects on seed yıeld and some agronomıcal traıts ın maın cropped soybean productıon

Impact of Permittivity Patterns on Fully Polarimetric Brightness Temperature Signatures at L-Band

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