Agro-Physiological Response of Quinoa (Chenopodium quinoa Willd.) to the Nitrogen Application Rate and Split Application Method

Ebrahimikia, Mostafa; Moeini, Matin Jami; Marvi, Hamid; Hasheminejhad, Yousef; Ganjehie, M. G.

doi:10.1007/s42729-021-00618-6

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Usually, application of N delays the crop phenological development, however, application of NIs-enriched urea helped quinoa plants to complete different stages of crop development earlier than ordinary urea and control treatments [ Table 2 ]. There are no evidence showing the effects of NIs-enriched urea with NI’s on crop maturity, nevertheless, delay in development stages for N applied in splits had been reported in quinoa validated in present study findings [ 11 ]. Plant height and panicle length are genetic and stable characters, however, strongly affected by environmental factors including N. No significant difference observed between these traits for enriched and ordinary urea could be attributed to similar gains in photosynthetic efficiency of these genotypes [ Table 4 ].…”

Section: Discussionsupporting

confidence: 86%

“…Improved growth and seed yield has also been reported in response to N application [ 10 ]. Likely, delayed flowering, extended seed filling period and improved photosynthetic pigments including seed yield was observed for 150 kg N ha −1 applied in two splits at 6–8 leaves and anthesis stages, respectively, compared to three splits and control with no N [ 11 ]. Nonetheless, variable response to N fertilization for growth including relative and crop growth rates, and seed yield was observed at low N rate in two quinoa cultivars [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

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Enriching Urea with Nitrogen Inhibitors Improves Growth, N Uptake and Seed Yield in Quinoa (Chenopodium quinoa Willd) Affecting Photochemical Efficiency and Nitrate Reductase Activity

Rehman

Alharby

Al-Zahrani

et al. 2022

Plants

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Quinoa is a climate resilience potential crop for food security due to high nutritive value. However, crop variable response to nitrogen (N) use efficiency may lead to affect grain quality and yield. This study compared the performance of contrasting quinoa genotypes (UAF Q-7, EMS-line and JQH1) to fertilizer urea enriched with urease and nitrification inhibitors (NIs; 1% (w/w) thiourea + boric acid + sodium thiosulphate), ordinary urea and with no N as control. Application of NIs-enriched urea improved plant growth, N uptake and chlorophyll values in quinoa genotype UAF-Q7 and JHQ1, however, highest nitrate reductase (NR) activity was observed in EMS-line. Quinoa plants supplied with NIs-enriched urea also completed true and multiple leaf stage, bud formation, flowering, and maturity stages earlier than ordinary urea and control, nevertheless, all quinoa genotypes reached true and multiple leaf stage, flowering and maturity stages at same time. Among photosynthetic efficiency traits, application of NIs-enriched urea expressed highest photosynthetic active radiations (PAR), electron transport rate (ETR), current fluorescence (Ft) and reduced quantum yield (Y) in EMS line. Nitrogen treatments had no significant difference for panicle length, however, among genotypes, UAF-Q7 showed highest length of panicle followed by others. Among yield attributes, NIs-enriched urea expressed maximum 1000-seed weight and seed yield per plant in JQH-1 hybrid and EMS-line. Likely, an increase in quinoa grain protein contents was observed in JQH-1 hybrid for NIs-enriched urea. In conclusion, NIs-enriched urea with urease and nitrification inhibitors simultaneously can be used to improve the N uptake, seed yield and grain protein contents in quinoa, however, better crop response was attributed to enhanced plant growth and photosynthetic efficiency.

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Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Enriching Urea with Nitrogen Inhibitors Improves Growth, N Uptake and Seed Yield in Quinoa (Chenopodium quinoa Willd) Affecting Photochemical Efficiency and Nitrate Reductase Activity

Rehman

Alharby

Al-Zahrani

et al. 2022

Plants

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“…In the development of agricultural technologies for the cultivation of Chenopodium quinoa Willd, much attention is currently being paid to the regulation of the nutritional status of plants, especially in conditions of insufficient supply of macro-and microelements. Mineral nitrogen is actively involved in all metabolic processes in plants, it is a key factor in ensuring sustainable growth, yield, and protein productivity (Berti et al, 2000;Almadini et al, 2019;Saeidi et al, 2020;Wang et al, 2020;Ebrahimikia et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

The effect of nitrogen fertilizer on the yield, structure and quality of quinoa (Chenopodium quinoa)

Kukharenkova,

Shitikova,

Vorsheva

2024

BIO Web Conf.

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Field experiments were conducted in 2021-2022 at the Russian State Agricultural Academy named after K.A. Timiryazev (Moscow). The reaction of quinoa varieties (Chenopodium quinoa Willd.) to the use of various doses of nitrogen fertilizers was studied. The effect of nitrogen doses N60, N120, as well as the timing and frequency of their application on yield, crop structure, payback of nitrogen fertilizers when applied to culture and protein content in grain in agroecological conditions of the Central region of Russia has been established. Studies have shown that quinoa forms a higher yield and accumulates more protein in the grain when using nitrogen fertilizers. The use of fertilizers in a dose of N120 for fertilizing plants provides an average of 2.32 t, 2.50 t and 3.02 t/ha of Regalon, Vanilla Cherry and Titicaca grain varieties, respectively, for two years.

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Reduced Nitrogen Loss and Sustained Seed Yield of Quinoa (Chenopodium quinoa Willd.) by Optimizing the Use of NPK, Cow Manure, and Vermicompost

Moradi,

Rokhzadi,

Mohammadi

et al. 2023

J Soil Sci Plant Nutr

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Agro-Physiological Response of Quinoa (Chenopodium quinoa Willd.) to the Nitrogen Application Rate and Split Application Method

Cited by 8 publications

References 23 publications

Enriching Urea with Nitrogen Inhibitors Improves Growth, N Uptake and Seed Yield in Quinoa (Chenopodium quinoa Willd) Affecting Photochemical Efficiency and Nitrate Reductase Activity

Enriching Urea with Nitrogen Inhibitors Improves Growth, N Uptake and Seed Yield in Quinoa (Chenopodium quinoa Willd) Affecting Photochemical Efficiency and Nitrate Reductase Activity

The effect of nitrogen fertilizer on the yield, structure and quality of quinoa (Chenopodium quinoa)

Reduced Nitrogen Loss and Sustained Seed Yield of Quinoa (Chenopodium quinoa Willd.) by Optimizing the Use of NPK, Cow Manure, and Vermicompost

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