Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).

Kakabouki, Ioanna; Hela, Dimitra; Roussis, Ioannis; Papastylianou, Panayiota; Sestraș, Adriana F.; Bilalis, Dimitrios

doi:10.4067/s0718-95162018005000901

Cited by 19 publications

(25 citation statements)

References 23 publications

(33 reference statements)

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“…However, there was no significant differences at 5% probability level between the application rates of 80 and 160 kg N ha -1 (i.e., 5.52 and 4.31 kg of grains ha -1 / kg of N ha -1 , respectively). These results are consistent with the findings of other researchers who emphasized that increasing N application does not necessarily increase NUE (Meyers, 1998;Schulte et al, 2005;Pospišil et al, 2006;Abou-Amer and Kamel, 2011;Kakabouki et al, 2018). Many investigations have proposed that there are numerous environmental, agronomic and genetic factors that affect NUE (Benincasa et al, 2011;MacDonald et al, 2013;Caixeta et al, 2015;Stahl et al, 2017), which in summary is a function of plant potential to uptake or acquisition N from the soil and its ability to physiologically utilize the absorbed N (Pathak et al, 2011).…”

Section: Discussionsupporting

confidence: 90%

“…Many investigations have proposed that there are numerous environmental, agronomic and genetic factors that affect NUE (Benincasa et al, 2011;MacDonald et al, 2013;Caixeta et al, 2015;Stahl et al, 2017), which in summary is a function of plant potential to uptake or acquisition N from the soil and its ability to physiologically utilize the absorbed N (Pathak et al, 2011). Kakabouki et al (2018) concluded that quinoa plants are highly competent in absorbing soil N; however, they appear poor in remobilizing N from the vegetative parts into the seeds under high N supply. This might therefore elucidate the quite low NUE achieved in the current study (Table 3).…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of Efficiency and Response of Quinoa Plant to Nitrogen Fertilization levels

2019

Middle East J. Appl. Sci.

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A field experiment was conducted to evaluate the response of the quinoa yield to nitrogen (N) fertilization, the nitrogen use efficiency (NUE) as well as the correlation coefficient to determine the important traits that contribute in determining the productivity of quinoa crop. Three levels of N fertilizer (i.e., 0, 80 and 160 kg N ha-1) were used and laid out in a randomized complete block design with four replicates. The results showed that all tested characteristics were significantly increased with increasing N fertilizer treatments showing grain yields per plant varying from 2.48 to 18.08 g plant-1 and grain yields per hectare ranging from 101.23 to 770.2 kg ha-1. In contrast, NUE was significantly reduced with increasing N fertilizer rates from 5.52 to 4.31. The results indicated that there were significant effects of treatments on some chemical components in grains at 0 and 160 kg N ha-1 (i.e., 14.81 and 17.13% protein respectively); N, phosphorus (P) and potassium (K) contents in grains, roots and stem. According to the correlation between the vegetative traits and grain yield kg ha-1 varied from 0.95 for no. of leaves plant-1 to 0.99 for chlorophyll content, fresh weight plant-1 as well as leaf area. Also, the simple correlation among agronomic and chemical traits had significant and positive relations with the grain yield kg ha-1 under the investigated N treatments with an exception of P content that recorded a relatively high negative correlation with grain yield ha-1 (-0.589). It may be concluded from obtained results that dry weight as a vegetative trait, grain yield plant-1 as an agronomic trait and the ash as a chemical trait should be taking in considerations suggesting the importance of direct selection for these traits as important ones with grain yield ha-1 under studied treatments.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Evaluation of Efficiency and Response of Quinoa Plant to Nitrogen Fertilization levels

2019

Middle East J. Appl. Sci.

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“…The seed yield was lowest in control and manure treatments with a significant increase in compost and inorganic fertilization treatments. According to several authors, the crops fertilized with inorganic fertilizers gave greater yields since these fertilizers contained soluble inorganic nitrogen with quick availability for crop species resulting in higher yields (Bilalis et al, 2018;Kakabouki et al, 2018). In our study, despite the differences in accumulated growing degree days (ADD) between the studied growing periods (1417.3 and 1685.2 ADD in 2017 and 2018, respectively), there were no significant differences on seed yield and the harvesting took place at almost the same time (122 and 125 DAS in 2017 and 2018, respectively).…”

Section: Discussionmentioning

confidence: 99%

Comparison of Growth Indices of Nigella sativa L. under Different Plant Densities and Fertilization

Roussis

Kakabouki²,

Bilalis³

2019

Emir J Food Agric

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Agronomic practices such as plant density and fertilizer management are referred to comprise crop environment, which influences plant growth, productivity, and ultimately the yield. The objective of the current study was to evaluate the influence of plant density and fertilization on the growth and growth indices of Nigella sativa crop and to determine the association between yield and growth characteristics at both the single plant and crop stand level. The 2-year experiment was laid out in a split-plot design, with three replications, two main plots (200 and 300 plants m-2) and four sub-plots (fertilization treatments: control, compost, farmyard manure and inorganic fertilizer). The highest absolute growth rate (AGR) (0.0321 g day-1) and relative growth rate (RGR) (0.0714 g g-1 day-1) values were recorded when plants subjected to low-density and inorganic fertilization, while the highest crop growth rate (CGR) (8.0342 g m-2 day-1) was obtained under high-plant density and inorganic fertilization. Concerning specific leaf area (SLA), the highest value (196.28 cm2 g-1) was found in inorganic fertilized treatment. Leaf area index (LAI), Leaf area duration (LAD) and Biomass duration (BMD) were positively affected by both plant density and fertilization with the greatest values observed under high-density and fertilization. In conclusion, plant densities higher than 200 plants m-2 lead to higher crop growth, but lower growth of individual plants and decreased seed yield, while the application of inorganic fertilizers increases crop growth and yield as these fertilizers contain higher levels of nitrogen with high solubility and therefore quick availability for the crop than the organic fertilizers.

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“…Total Nitrogen -46 1.86 Although the number of leaves is a determining variable in the production of quinoa, it is not a key factor to crop yield. Similarly, the application of elements such as nitrogen stimulated the excessive development of fodder, which could affect the grain productivity (Kakabouki et al, 2018). Correspondingly, García et al (2017) stated that the application of an increasing dose of N-P-K in quinoa enhanced leaf area but not productivity.…”

Section: Prf (%) U (%) Aefv (%)mentioning

confidence: 99%

Physiological performance of quinoa (Chenopodium quinoa Willd.) under agricultural climatic conditions in Boyaca, Colombia

2019

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Quinoa (Chenopodium quinoa Willd.) is native to South America; it is characterized by its high nutrient contents and high adaptation capacity to diverse edapho-climatic conditions, which highlights it´s genetic variability expressed as multiple physiological and phenological responses. The objective of this research was to evaluate the physiological response and proximal composition of the grain to three types of fertilization under the environmental conditions of the municipality of Oicata (Boyaca, Colombia) located at 2,875 m a.s.l. The white Soracá variety was planted using a completely randomized design with four treatments and four replicates. It was observed that the fertilization sources have an effect on the physiological and phenological behavior, mainly on the number of leaves, length of stem and chlorophyll content. The reproductive stage and the proximal composition of seeds changed, which is attributed to the application of mineral organic fertilizer that improves the production of quinoa grains, while N-P-K contribution shows greater growth and vegetable development, but less yield.

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Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).

Cited by 19 publications

References 23 publications

Evaluation of Efficiency and Response of Quinoa Plant to Nitrogen Fertilization levels

Evaluation of Efficiency and Response of Quinoa Plant to Nitrogen Fertilization levels

Comparison of Growth Indices of Nigella sativa L. under Different Plant Densities and Fertilization

Physiological performance of quinoa (Chenopodium quinoa Willd.) under agricultural climatic conditions in Boyaca, Colombia

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