Value of copper, zinc, and oxidized charcoal for increasing forage efficiency of urea N uptake

Guimarães, Gelton Geraldo Fernandes; Mulvaney, R. L.; Cantarutti, Reinaldo Bertola; Teixeira, Breno Cardoso; Vergütz, Leonardus

doi:10.1016/j.agee.2016.03.036

Cited by 17 publications

(14 citation statements)

References 46 publications

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“…In this respect, the observed increase in the AEN in the present experiment could be partially explained by the inhibitory effects of ZnSO 4 (which was applied to the soil in conjunction with urea fertilizer) on urease activity. Guimarães et al . also showed that the use of ZnSO 4 in conjunction with urea significantly increased both total N uptake and the efficiency of urea N fertilization in a forage crop.…”

Section: Discussionmentioning

confidence: 95%

“…A wide variety of compounds that include ZnSO 4 have been shown to inhibit the effects of urease activity and to retard urea hydrolysis. A greenhouse study by Guimarães et al . recently showed that the use of ZnSO 4 in conjunction with urea significantly increased both the total N uptake and the efficiency of urea N fertilization in a forage crop.…”

Section: Introductionmentioning

confidence: 99%

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Zinc application in conjunction with urea as a fertilization strategy for improving both nitrogen use efficiency and the zinc biofortification of barley

et al. 2019

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BACKGROUND: Intensive cropping systems have caused widespread Zn deficiency, low nutritional quality of cereals and environmental problems. The aim of the microplot field experiment reported in this paper was to assess the option of using Zn in conjunction with urea fertilization in order to reduce N rate and to maintain the yield level and grain quality but minimizing environmental risks. Barley (Hordeum vulgare L.) was cultivated in a calcareous soil under semi-realistic conditions. Combinations of four Zn levels, applied by spraying aqueous solutions of ZnSO 4 , and three N levels, applied by spreading granular urea, were tested. RESULTS: Zn and N showed a synergistic effect, increasing yield and Zn content in all plant parts and protein content in grain.A low Zn dosage of 5 kg ha −1 was sufficient to significantly increase the amount of bioavailable Zn in soil and significantly raise its concentration in plant material and also the protein content in grain. The remobilization of Zn from leaf tissue to grain was dependent on the availability of Zn and was only crucial when its bioavailability was low. CONCLUSIONS: A Zn dosage of 5 kg ha −1 enhanced the agronomic efficiency of N by 15.5 kg grain kg −1 N. The Zn applied to the soil permitted a reduction in the rate of N with only a small decrease in barley grain yield and nutritional value. However, due to the interannual variability in rainfall, which is characteristic of Mediterranean climates, further studies will be necessary to confirm and extend these results.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Zinc application in conjunction with urea as a fertilization strategy for improving both nitrogen use efficiency and the zinc biofortification of barley

et al. 2019

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“…However, their use in tropical grass pasture fertilization programs does not always result in an increase of forage yield. This lack of response may occur because the soils with low pH, with no liming or low fertilization with macronutrients and micronutrients application in the soil may also lead to a lack of response (Guimarães et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Chelated zinc leaf application on nutrients concentration and yield of Mombasa grass

Teixeira

Heinrichs

Bonini

et al. 2018

Journal of Plant Nutrition

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The intensification of livestock yield requires advances in the management and fertilization of forage crops. This study was conducted to determine the dry weight yield (DWY) along with the concentration and amount of nutrients of Megathyrsus maximum cv. Mombasa. The treatments were arranged in a factorial scheme 6 Â 2, six leaf rates of Zn chelate and two soil types (Entisols and Ultisol) with low and medium Zn content and four replicates. Entisols with low Zn content and Ultisol with average Zn content were used plus a control treatment with Zn sulfate. The Zn chelate and Zn sulfate foliar application did not affect the DWY. The tillering and DWY were higher in Ultisol than in Entisol. The Zn content in DWY was directly proportional to rate chelated Zn. The root dry weight yield of Mombasa grass reduced with the chelated Zn foliar application in Entisol and had no effect on Ultisol.

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“…In addition, a lower N dose was required to obtain the same corn dry matter yield when urea was applied as U-CHox and U-AH CH in contrast to applying urea alone. According to Guimarães et al (2016), the high CEC of functionalized charcoal increases the availability of mineral N in the soil due to reducing N losses.…”

Section: Discussionmentioning

confidence: 99%

Value of Functionalized Charcoal for Increasing the Efficiency of Urea N Uptake: Insights into the Functionalization Process and the Physicochemical Characteristics of Charcoal

Paiva

Guimarães

Teixeira

et al. 2019

Rev. Bras. Ciênc. Solo

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Value of copper, zinc, and oxidized charcoal for increasing forage efficiency of urea N uptake

Cited by 17 publications

References 46 publications

Zinc application in conjunction with urea as a fertilization strategy for improving both nitrogen use efficiency and the zinc biofortification of barley

Zinc application in conjunction with urea as a fertilization strategy for improving both nitrogen use efficiency and the zinc biofortification of barley

Chelated zinc leaf application on nutrients concentration and yield of Mombasa grass

Value of Functionalized Charcoal for Increasing the Efficiency of Urea N Uptake: Insights into the Functionalization Process and the Physicochemical Characteristics of Charcoal

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