Manganese foliar supplementation impacts rice yield in tropical lowlands

Barros, Hélio Bandeira; Souza, Maiko Emiliano; Darío, Alex; Santos, Marony Pereira de Almeida; Nascimento, Vitor L.

doi:10.1080/01904167.2019.1628981

Cited by 2 publications

(1 citation statement)

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“…After osmopriming, foliar-applied Mn enhanced the wheat yield for both WTs, because it is an efficient method of application owing to various reasons, including lower application rates, uniform application and distribution, and rapid plant response [81]. The lower response of Mn basal application was might due to lower SOM and alkaline calcareous soils that reduced the Mn availability to plants [82]. Grain weight with Mn application on foliage might be due to an improved source-sink relationship that ensures maximum assimilates supply during grain development [83].…”

Section: Discussionmentioning

confidence: 99%

Manganese Supply Improves Bread Wheat Productivity, Economic Returns and Grain Biofortification under Conventional and No Tillage Systems

et al. 2021

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Manganese is an important essential micronutrient, and its deficiency causes latent health issues in humans. Agronomic biofortification can promisingly improve the plant nutrient concentration without changing the genetic makeup of plants. This study was designed to assess the best method of Mn application to enhance productivity and grain Mn contents under conventional tillage (CT) and no tillage (NT) systems. Manganese was delivered through seed coating (250-mg kg−1 seed), osmopriming (0.1-M Mn solution), soil application (1 kg ha−1), and foliar application (0.25-M Mn solution). A general control with no seed Mn application was included, whereas hydropriming and water spray were used as positive control treatments for Mn seed priming and Mn foliar spray, respectively. No tillage had a higher total soil porosity (9%), soil organic carbon (16%), soil microbial biomass carbon (4%), nitrogen (2%), and soil nutrients in the CT system. Manganese nutrition through various methods significantly enhanced the yield, grain biofortification, and net benefits for CT and NT systems. Averaged across two years, the maximum improvement in grain productivity was recorded with osmopriming (28%) followed by foliar application (26%). The highest grain Mn concentration (29% over no application) was recorded with Mn foliar applications under both tillage systems. Moreover, the highest economic returns and marginal net benefits were recorded with osmopriming. To improve the wheat production, profitability, and grain Mn concentration, Mn application through priming and foliar application may be opted.

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Section: Discussionmentioning

confidence: 99%