Dry matter production and nutrient accumulation in <i>Crotalaria spectabilis</i> shoots

Mauad, Munir; Santana, Rafaela Silva; Carli, T. H.; Carli, F.; Vitorino, Antônio Carlos Tadeu; Mussury, Rosilda Mara; Rech, Jerusa

doi:10.1080/01904167.2019.1567779

Cited by 14 publications

(9 citation statements)

References 15 publications

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“…followed by pods, grains and, finally, leaves. This corroborates the results obtained by Mauad et al (2019), who observed the same ranking of K accumulation in C. spectabilis.…”

Section: Resultssupporting

confidence: 93%

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Dry matter production and nitrogen, phosphorus and potassium uptake in Crotalaria juncea and Crotalaria spectabilis

Barbosa

Santana

Mauad

et al. 2020

Pesqui. Agropecu. Trop.

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There are several benefits in the cultivation of Crotalaria spp., including high levels of biomass production and N accumulation, nutrient cycling and antagonistic activity against some nematodes. However, information on nutritional demand is still scarce for these species. This study aimed to determine the dry matter production and macronutrient uptake in shoots of Crotalaria juncea and Crotalaria spectabilis. Two experiments (one for each species) were carried out in a randomized block design, with three replications, assessing thirteen harvest times for C. juncea and ten for C. spectabilis. After each harvest, the samples were dried, weighed and submitted to laboratory analysis, in order to determine the nutrient contents in different parts of the plant. The nutrient accumulation on the shoots, for both species, occurred in the order K > N > P, being the stem the main organ of nutrient accumulation. Also for both species, the export of nutrients by the grains followed the order N > K > P. The maximum dry matter accumulation occurred at 135 and 104 days after emergence (DAE), respectively for C. juncea and C. spectabilis, while the production of viable seeds, in both species, had already begun at 90 DAE.

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“…followed by pods, grains and, finally, leaves. This corroborates the results obtained by Mauad et al (2019), who observed the same ranking of K accumulation in C. spectabilis.…”

Section: Resultssupporting

confidence: 93%

“…Potassium was the nutrient most accumulated by the crotalaria plants (Table 4). This result is similar to those found by Silva et al (2002), Pott & Feltrin (2008) and Mauad et al (2019). In these studies on Crotalaria spectabilis, it was also observed that K was the macronutrient with the largest accumulation levels in crotalaria plant tissues.…”

Section: Resultssupporting

confidence: 91%

Dry matter production and nitrogen, phosphorus and potassium uptake in Crotalaria juncea and Crotalaria spectabilis

Barbosa

Santana

Mauad

et al. 2020

Pesqui. Agropecu. Trop.

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“…are successfully used as green manures because they have high https://doi.org/10. 1590/1678-4499.20200262 Legume green manures effects on soil microbiology Bragantia, Campinas, v. 79, n. 4, p.630-640, 2020 fodder production in crop rotation systems (Oliveira et al 2017;Mauad et al 2019). On the other hand, legumes green manure based on peanut (Arachis hypogaea L.), common bean (Phaseolus vulgaris L.) and cowpea (Vigna unguiculata L.) are employed in the production and trade of its grains (Degefu et al 2018;Nouralinezhad et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of different legume green manures on tropical soil microbiology after corn harvest

et al. 2020

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Legume green manure is a popular practice for sustainable agriculture in tropical environments. The use of grain, forage and purely green manure legumes in a subhumid tropical area in Northeast Brazil was investigated to determine the total C and N contents and estimate C-microbial biomass, soil basal respiration, microbial and metabolic quotients, before and after green manures and after the following corn. It was hypothesized that, although all legumes would increase microbial biomass and activity, there would be different effects in function of the main economic usage of the legume. The experimental design evaluated the soil before and after harvest of seven legumes: (i) purely green manures -sunn hemp (Crotalaria juncea L.) and velvet bean (Stizolobium aterrimum Piper & Tracy); (ii) forage -Campo Grande stylo (a physical mixture of 80% of Stylosanthes captata Vog. and 20% of Stylosanthes macrocephala) and calopo (Calopogonium mucunoides Dev.) and (iii) grain -common bean (Phaseolus vulgaris L.), cowpea (Vigna unguiculata L.) and peanut (Arachis hypogaea L.), followed by corn crop. After corn harvest, soils had the same total C and N contents before legume seeding, but C-microbial biomass was significantly higher in soils with grain and purely green manures, which produced higher shoot and root dry mass. Soil basal respiration decreased after corn harvest for all legumes comparing to control treatments, but metabolic stress increased in soils with forage species. Despite this, microbial quotient indicated an efficiency of the microorganisms in degrading the residual organic matter of all green manures used in corn.

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“…is the main purpose of production, with excellent accumulation and high nutrient cycling, with emphasis on N and Ca, in addition to reducing the incidence of weeds and nematodes in the soil [3].…”

Section: Highlightsmentioning

confidence: 99%

Physiological Response of Seeds of Crotalaria spectabilis under Drought and Heat Stress

Nóbrega

Silva

Bezerra

et al. 2022

Braz. arch. biol. technol.

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This study evaluate the effect of drought and heat stress on the quality of C. spectabilis seeds. A completely randomized design in a 4×4 factorial scheme, referring to four osmotic potentials based on Polyethylene glycol (PEG 6000 = 0.0, -0.2, -0.4 and -0.8 MPa) and four temperatures (25, 30 and 35 ºC constant and alternating between 25-35 ºC), with four replications of 50 seeds per plot was used. The germination percentage, first count germination, germination speed index, average germination time, average germination speed, length and dry mass of the root, shoot and seedlings were evaluated. C. spectabilis is sensitive to drought stress during germination and seedling establishment, tolerating up to -0.2 MPa. The physiological quality of seeds is reduced with the decrease of osmotic potentials. The temperature range between 25 and 30 ºC are the one that provide better conditions for the germination of the seeds of this species.

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Dry matter production and nutrient accumulation in Crotalaria spectabilis shoots

Cited by 14 publications

References 15 publications

Dry matter production and nitrogen, phosphorus and potassium uptake in Crotalaria juncea and Crotalaria spectabilis

Dry matter production and nitrogen, phosphorus and potassium uptake in Crotalaria juncea and Crotalaria spectabilis

Effects of different legume green manures on tropical soil microbiology after corn harvest

Physiological Response of Seeds of Crotalaria spectabilis under Drought and Heat Stress

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