Nitrogen and Potassium in Production, Nutrition and Water Use Efficiency in Wheat Plants

Carvalho, Janaina M. G.; Bonfim-Silva, Edna Maria; Silva, Tonny J. Araújo da; Sousa, Helon Hébano de Freitas; Guimarães, Salomão Lima; Pacheco, Adriano Bicioni

doi:10.4067/s0718-16202016000300010

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…However, the contribution of nitrogen fertilization to the production of shoot dry mass was positive, because as the nitrogen doses increased, the shoot dry mass increased. Unlike the present study, Carvalho et al (2016), when studying combinations of nitrogen and potassium in the wheat cultivar BRS 254 in a greenhouse, observed an interaction between fertilizers and, consequently, an increase in shoot dry mass.…”

Section: Shoot Dry Masscontrasting

confidence: 99%

Nitrogen and potassium interaction in oxisol soils under BRS 394 wheat cultivation

Paludo,

Bonfim-Silva,

Silva

et al. 2024

Rev. Caatinga

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Potassium and nitrogen are essential nutrients and their uptake and distribution within plants must be coordinated for optimum growth and development. We evaluated the interaction between nitrogen and potassium fertilization on the development of BRS 394 wheat, and the nitrate and ammonium levels in Oxisol soils. A 52 factorial design was used in a greenhouse experiment, with four replicates in randomized blocks, corresponding to five doses of nitrogen (0, 70, 140, 210, and 280 mg dm-3) and five doses of potassium (0, 50, 100, 150, and 200 mg dm-3). The variables analyzed were shoot dry mass; chlorophyll index; nitrate reductase; nitrogen, potassium, and protein concentrations in the leaves; and nitrate and ammonium levels in the soil. There was an interaction between nitrogen and potassium doses on the chlorophyll index, with nitrogen doses between 152.67 and 163.53 mg dm-3 and potassium of 191.50 mg dm-3 providing the highest chlorophyll index. The other variables were influenced separately by the nitrogen dose. The highest nitrate reductase enzyme activity was 1.30 µmol NO h-1 g-1 Fresh Matter, which was reached at a nitrogen dose of 95 mg dm-3. Shoot dry mass, concentrations of nitrogen and total protein in the leaves, and concentrations of nitrate and ammonium in the soil were adjusted to the linear regression model as a function of nitrogen fertilization. The dose of nitrogen that promoted the best development of BRS 394 wheat and the highest concentrations of nitrate and ammonium in Oxysol soils was 280 mg dm-3.

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Section: Shoot Dry Masscontrasting

confidence: 99%

Nitrogen and potassium interaction in oxisol soils under BRS 394 wheat cultivation

Paludo,

Bonfim-Silva,

Silva

et al. 2024

Rev. Caatinga

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“…After studying the same cultivar (BRS 254) under greenhouse conditions, Carvalho et al (2016) confirmed that nitrogen and potassium doses affect the behavior of spike dry weight, albeit in an isolated fashion, such as this study (Fig 3a, 3b and 4). Plant capacity to absorb and use nitrogen is the main advantage deriving from the relationship between nitrogen and potassium (Brar et al, 2011).…”

Section: Spike Developmentsupporting

confidence: 82%

Morphological development and yield of wheat irrigated under nitrogen and potassium fertilization in Cerrado Oxisol

Bonfim-Silva¹,

Freitas²,

Silva³

et al. 2018

Aust J Crop Sci

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This study aimed at assessing the effects of nitrogen-potassium interaction on dry matter and grain yield of irrigated wheat (Triticum aestivum L.) grown in the Brazilian Cerrado. The experiment was conducted for two consecutive cropping seasons (2014 and 2015), between March and August. The experiment was arranged in a randomized block design. Treatments consisted of five nitrogen and five potassium doses in a factorial scheme (5×5). The analyzed variables consisted of the shoot and spike dry weights, and grain yield. In both years (2014 and 2015), isolated effects of nitrogen and potassium doses were observed on the assessed traits. In 2014, the highest results were achieved by the respective nitrogen and potassium doses: 145.02 and 148.32 kg ha -1 for shoot dry weight, 133.79 and 139.85 kg ha -1 for spikes, and 119.14 and 138.83 kg ha -1 for grain yield. Yet in 2015, no significant results were identified, while nitrogen doses showed a linear effect on shoot and spike dry weights, potassium rates revealed such effect on grain yield. Although nitrogen showed a higher response in terms of dry weight for shoot and spikes, potassium induced the largest increases in productivity. Thus, for greater efficiency of fertilization, a careful analysis of the level of soil fertility, the expected productivity and the technological level employed is necessary. It should be emphasized that the management of fertilization has specificities every year, requiring constant adaptation.Keywords: BRS 254 wheat; Cerrado wheat production; nitrogen-potassium ratio; nitrogen and potassium fertilizations; Triticum aestivum. Abbreviations: ANOVA_variance analysis; CAPES_coordination for improvement of higher education personnel; CEC_cation exchange capacity; CNPq_national council for scientific and technological development; EMBRAPA_brazilian agricultural research company; ET o _reference evapotranspiration; FAO_ food and agriculture organization of the united nations; FAPEMAT_research support foundation of the state of mato grosso; FTE_fritted trace elements; KCL_potassium chloride; O.M._organic matter; SAS_statistical analysis software; SB_sum of bases; SDW_shoot dry weight; SpDW_spike dry weight; V_base saturation; WY_wheat yield;

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“…This demonstrates that other factors, besides the availability of nutrients, influence absorption, assimilation, and translocation. This effect of N on K accumulation has also been reported in a study testing the interaction between N and K in a protected environment (Carvalho et al, 2016).…”

Section: Potassium Accumulationsupporting

confidence: 74%

“…A study on development, production, and nutrition of wheat fertilized with N and K under controlled conditions also found no significant interaction between these nutrients, but N had an individual effect on K accumulation in the grains, which fitted to a quadratic regression model (Carvalho et al, 2016).…”

Section: Nitrogen Contentmentioning

confidence: 91%

Nitrogen, Potassium, and Protein in Grains From Wheat Grown Under Nitrogen and Potassium Fertilizations in the Brazilian Cerrado

Bonfim-Silva¹,

Freitas²,

Silva³

et al. 2018

JAS

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Nitrogen is a component of proteins contained in grains and potassium an enzymatic activator in nitrate (NO3-) assimilation and contributes to the translocation and storage of plant assimilates. Together they can increase protein contents of wheat grains. This research aimed to evaluate whether the interaction between nitrogen (N) and potassium (K) fertilizations in irrigated wheat in the Cerrado region of the Mato Grosso State increases the content and accumulation of N, K, and protein in wheat grains. The experiment was carried out in the field for two consecutive years (2014 and 2015) in the Federal University of Mato Grosso. It was designed in randomized blocks in 52 fractional factorial, composed of combinations between five doses of each of N and K, 13 treatments combinations in total with four replicates. After harvest, the grains were dried to determine the contents of N, K, and protein. The nitrogen content was influenced by nitrogen doses in both years and the accumulation significantly influenced by the nitrogen and potassium doses with an average increase among the years of 55.29% as a function of the potassium application. Nitrogen influenced the accumulation of potassium only in 2015 with effect for potassium in both years. Although there was no interaction between treatments, the influence of K on N absorption was evident. Contents and accumulations of N and K and the content of protein in wheat grains are influenced by N and K fertilizations.

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Nitrogen and Potassium in Production, Nutrition and Water Use Efficiency in Wheat Plants

Cited by 8 publications

References 15 publications

Nitrogen and potassium interaction in oxisol soils under BRS 394 wheat cultivation

Nitrogen and potassium interaction in oxisol soils under BRS 394 wheat cultivation

Morphological development and yield of wheat irrigated under nitrogen and potassium fertilization in Cerrado Oxisol

Nitrogen, Potassium, and Protein in Grains From Wheat Grown Under Nitrogen and Potassium Fertilizations in the Brazilian Cerrado

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