Productivity and nutrient use efficiency with integrated fertilization of buckwheat–fenugreek intercrops

Salehi, Aliyeh; Mehdi, Bano; Fallah, Sina; Kaul, Hans‐Peter; Neugschwandtner, Reinhard W.

doi:10.1007/s10705-018-9906-x

Cited by 37 publications

(18 citation statements)

References 39 publications

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“…The results are consistent with Chilimba et al (2014) who investigated agronomic biofortification in intercropped systems and observed a greater recovery of Se in maize-groundnut intercropped treatments compared to single cropped plots. Additionally, these findings may suggest improved 77 SeFert efficiency use when two or more crops are grown in association, as reported by Salehi et al (2018) for other plant nutrients (N). Thus, the reduced soluble and adsorbed 77 SeFert in the maize grown after cowpea and groundnuts rotation (T5C and T5G) plots is consistent with greater uptake of the applied 77 SeFert (Fig.…”

Section: Soluble and Adsorbed Sefertsupporting

confidence: 54%

Agronomic biofortification of leafy vegetables grown in an Oxisol, Alfisol and Vertisol with isotopically labelled selenium (77Se)

et al. 2020

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Biofortification with selenium (Se) may rely on rapid uptake by crops, following application, to offset progressive fixation into unavailable organic forms of Se in soil. A biofortification study was conducted on an Alfisol within a long-term conservation agriculture (CA) field trial at Chitedze Research Station, Malawi. The aim was to assess the dynamics of selenium bioavailability to a staple cereal (Zea mays) and a range of legumes (cowpeas, groundnuts, pigeon peas and velvet beans) under CA management, as well as residual Se effects in the year following biofortification. Isotopically labelled selenate (>99% enriched 77 Se VI ) was applied to each plot, in solution, at a rate of 20 g ha -1 , at maize flowering (75 days after planting), in February, 2017. Samples of grain and stover from maize and legumes, and topsoil, were collected at harvest in May, 2017 and May, 2018. Plant and soil samples were analyzed by ICP-MS for selenium isotopes ( 77 Se and 78 Se). The concentration of 77 Se in the grain of maize and single-cropped legumes exceeded 200 µg kg -1 in all the treatments. This would contribute approximately 56 -64 µg day -1 to the Malawi diet, as refined maize flour. The fertilizer derived Se concentration ratio of maize grain-to-stover Se were >1 in 2017 but <1 in 2018; which followed the same trend as the native soil-derived Se in the residual year. In legumes the grain-to-stover concentration ratio was consistently < 1 in both years, except for the velvet beans.Differences in CA management had minimal influence on 77 Se concentration in plant grain but the low yield in the single conventional treatment reduced 77 Se uptake. Residual 77 Se in the soil (35 % of the applied) measured at harvest in 2017 was still present at harvest in the residual year (2018) but was completely unavailable to any of the crops. Almost none of the remaining 77 Se was present in soluble or phosphate-extractable forms and virtually all was present in the 'organic' (TMAH-extractable) fraction. Thus, annual Se applications to maize would be necessary to maintain concentrations which could improve dietary supply and reduce current Se deficiency in Malawi.Highlights. Selenium at 20 g ha -1 raises dietary levels above the recommended dietary allowance Selenium fixation into humus-bound forms eliminates residual availability Conservation agriculture treatments have little effect on selenium uptake by maize Legumes (e.g. groundnuts) accumulate greater concentrations of selenium than maize Keywords.

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Section: Soluble and Adsorbed Sefertsupporting

confidence: 54%

Agronomic biofortification of leafy vegetables grown in an Oxisol, Alfisol and Vertisol with isotopically labelled selenium (77Se)

et al. 2020

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“…Reagents and chemicals used in this study were acetonitrile HPLC grade (Chem-Lab NV, Belgium); FeCl 3 •6H 2 O, Folin-Ciocalteu reagent (Merck); AlCl 3 •6H 2 O, acetic acid p.a., TPTZ (2,4,6-tripyridyl-s-triazin, >99%) (Fluka); caffeic acid (>99%), HCl, ethanol (96%) p.a., isovitexin (ROTICHROM ® , >99%), vitexin (ROTICHROM ® , >99%), trigonelline hydrochloride >97.5%), methanol p.a., formic acid (ROTIPURAN, >98%), NaCH 3 COOH•3H 2 O, NaOH, NaNO 2 , and Na 2 CO 3 , were purchased from Roth; DPPH: 2,2-Diphenyl-1-Picrylhydrazyl (>99%), orientin (>97%), isoorientin (HPLC-grade, >98%), trolox: (±)-6-Hydroxy-2,5,7,8-tetra-methylchromane-2-carboxylic acid (>98%), and rutin (>99%), were obtained from Sigma-Aldrich. More detailed information on the sample preparation and analysis is provided in Salehi et al [15,16,27].…”

Section: Seed Analysis Reagents and Chemicalsmentioning

confidence: 99%

“…Overall, the application of BL and IF in intercropped systems increased the TC of the harvested fenugreek seeds. This can be explained by the availability of N due to the slower release of N from organic manure during the growing season and through additional soil N availability by the N-fixation of fenugreek [27]. Trigonelline is an alkaloid compound that is produced through methylation of nicotinic acid.…”

Section: Trigonelline Content (Tc)mentioning

confidence: 99%

Effect of Organic Fertilizers on Antioxidant Activity and Bioactive Compounds of Fenugreek Seeds in Intercropped Systems with Buckwheat

et al. 2019

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Antioxidants and flavonoids are beneficial compounds used in the pharmaceutical and food industries that are derived from natural sources. A two-year field experiment was undertaken to investigate the effect of agricultural management practices on the trigonelline content, antioxidant activity measured with DPPH (2,2-Diphenyl-1-Picrylhydrazyl) and FRAP (Fe+++-Reduction, Ferric reducing antioxidant power), total phenolic content, total flavonoids content, and specific flavonoid contents of fenugreek seeds. The treatments examined were sole fenugreek (Sole F) and three intercropping ratios with buckwheat (B) (F:B = 2:1, 1:1, and 1:2), each with three types of fertilizer (chemical fertilizer, integrated fertilizer, and broiler litter). The highest trigonelline content of fenugreek seeds was obtained in F:B = 2:1 fertilized with broiler litter. Compared to Sole F, the fenugreek seeds harvested in the intercropped treatments had higher antioxidant activity, total phenolic content, vitexin, isovitexin, orientin, and isoorientin. The treatment F:B = 2:1 enhanced the antioxidant activity and the content of bioactive compounds. Overall, the addition of organic manure to fenugreek seeds was highly effective at promoting all compounds analyzed in both the sole and the intercrop systems. Our study found that harvested fenugreek seeds from plants that were intercropped with buckwheat and with the application of organic fertilizer enhanced the seed content of antioxidants and flavonoids.

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“…[ 25,26 ] The seeds of fenugreek are widely used for their antidiabetic, anticarcinogenic, antioxidant, anticancer, hypocholesterolemic, and immunological properties. [ 27 ] Apart from medicinal benefits, fenugreek fixes atmospheric N, decreasing the N fertilizer need in cropping systems, [ 28 ] a characteristic of vital importance for low‐income farmers around the world. [ 29 ] Nitrogen fixing trait of fenugreek also makes it a feasible crop for intercropping with nonlegume crops, a common sustainable practice among small‐scale farmers in semiarid regions where plant production is limited by lack of water inputs, water retention, and low organic matter content.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Intercropping Systems of Black Cumin (Nigella sativa L.) and Fenugreek (Trigonella foenum‐graecum L.) through Inoculation with Bacteria and Mycorrhizal Fungi

Rezaei‐Chiyaneh

Battaglia

Sadeghpour

et al. 2021

Advanced Sustainable Systems

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This study evaluates the effects of intercropping patterns, plant growth‐promoting rhizobacteria and arbuscular mycorrhizal fungi (AMF) on seed yield and yield components of black cumin (Nigella sativa L.) and fenugreek (Trigonella foenum‐graecum L.), as well as the essential oil and fatty acid profile of black cumin. A two‐year two‐factorial field experiment was conducted in 2015 and 2016 to investigate intercropping of black cumin and fenugreek in five ratios and biofertilizer application as AMF and bacteria. Intercropping reveals higher concentrations of nitrogen and phosphorus compared with monocropping, whereas monocropping inoculated with bacteria shows the highest seed yield of both fenugreek (151 g m−2) and black cumin (148 g m−2). Regarding the quality of black cumin, the combination of a black cumin:fenugreek‐intercropping pattern of 66:34 with bacteria fertilization is most promising, as it shows i) the maximum essential oil content, oil yield, and fixed oil content, ii) the highest contents of thymol and p‐cymene, iii) the highest content of linoleic acid, and iv) the maximum land equivalent ratio. Conclusively, bacteria fertilization and black cumin:fenugreek‐intercropping pattern of 66:34 helps improving essential oil, fixed oil quality, and quantity of black cumin, thus creating a more sustainable cultivation system for black cumin and fenugreek.

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Productivity and nutrient use efficiency with integrated fertilization of buckwheat–fenugreek intercrops

Cited by 37 publications

References 39 publications

Agronomic biofortification of leafy vegetables grown in an Oxisol, Alfisol and Vertisol with isotopically labelled selenium (77Se)

Agronomic biofortification of leafy vegetables grown in an Oxisol, Alfisol and Vertisol with isotopically labelled selenium (77Se)

Effect of Organic Fertilizers on Antioxidant Activity and Bioactive Compounds of Fenugreek Seeds in Intercropped Systems with Buckwheat

Optimizing Intercropping Systems of Black Cumin (Nigella sativa L.) and Fenugreek (Trigonella foenum‐graecum L.) through Inoculation with Bacteria and Mycorrhizal Fungi

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