Nitrogen use efficiency of maize and spring barley under potassium fertilization in long-term field experiment

Rutkowska, Agnieszka; Pikuła, D.; Stępień, Wojciech

doi:10.17221/434/2014-pse

Cited by 14 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This could be attributed to imbalance between N and K as also reported by Wahhab and Hussain (1957). Crop response to applied nitrogen fertilizers decreases when the exchangeable potassium content of a soil is below the optimal level and vice versa (Rutkowska et al, 2014;Pradhan et al, 2015). Positive interaction between N and K at balanced supply might be the reason for the increased N concentration in plants.…”

Section: Effect Of K Application On Nutrient Concentrations In Teff Tmentioning

confidence: 54%

Effect of potassium levels on teff (Eragrostis tef (Zucc.) Trotter) growth and yield in Central Highland Vertisols of Ethiopia

Demiss¹,

Mamo²,

Beyene³

et al. 2020

Eurasian Journal of Soil Science (Ejss)

View full text Add to dashboard Cite

Nutrient depletion and imbalance are among the major attributes that contribute to declining soil productivity in the highlands of Ethiopia. The blanket fertilizer recommendation, which considered only urea and Di-ammonium phosphate (DAP), was used over the past four decades to improve soil fertility for enhancing crop production. Nevertheless, the average national yields of small cereal including teff were low, despite application of nitrogen and phosphorus (NP) fertilizers. On-farm trials were conducted in the 2015/16 and 2016/17 cropping seasons at 18 locations on Ethiopian highland Vertisols to determine the response of teff to potassium (K) fertilization along with other limiting nutrients. Five K levels (0, 30, 60, 90 and 120 kg ha-1) in the form of murate of potash (KCl) were used in randomized complete block design with three replications. Separate analysis of variance was conducted for each sites and year. Least Significant Difference (LSD) test at P ≤ 0.05 was used to separate means whenever there were significant differences. Analysis of variance revealed a highly significant difference (P < 0.01) between treatments in both straw and grain yields and tissue nitrogen (N) and K concentrations of teff over the twocropping seasons in 67% of the test locations. Additionally, responses to K were obtained on soils with available K test ranging between 166 and 282 mg kg-1. The Ca: K and Mg: K ratios were strongly and negatively correlated with relative yield and the correlations suggest that soil with Ca: K > 50:1 and Mg: K >15:1 are likely to respond to potassium fertilization. The yield advantage accrued due to K application ranged from 30 to 77% in 2015/16 and 8 to 51% in 2016/17 seasons. The economic optimum K fertilizer application rates varied between 60 kg K ha-1 in 44% of the sites to 90 kg K ha-1 in 23% of the sites. The findings highlighted the need for revisiting fertilizer program to enhance the yield and nutrient uptake of teff in K responsive soils and developing critical levels for K in the study sites.

show abstract

Section: Effect Of K Application On Nutrient Concentrations In Teff Tmentioning

confidence: 54%

Effect of potassium levels on teff (Eragrostis tef (Zucc.) Trotter) growth and yield in Central Highland Vertisols of Ethiopia

Demiss¹,

Mamo²,

Beyene³

et al. 2020

Eurasian Journal of Soil Science (Ejss)

View full text Add to dashboard Cite

show abstract

“…Nitrogen memiliki sifat mudah menguap dengan mobilitas tinggi dan mudah tercuci sehingga ketersediaannya di tanah umumnya sangat rendah (Rutkowska et al 2014, Zheng et al 2016, Khan et al 2014, Libutti and Monteleone 2017, Gaudin et al 2015, Oyarzun et al 2007 sehingga tanaman perlu diberi pupuk N. Namun kelangkaan pupuk N pada saat tanam atau kurangnya modal untuk membeli pupuk menyebabkan tanaman mengalami kekurangan N.…”

Section: Pendahuluanunclassified

Indeks Toleran dan Evaluasi Karakter Seleksi Jagung Hibrida terhadap Pemupukan N Rendah

Herawati

Efendi

Azrai

2019

j. penelit. pertan. tanam. pangan

View full text Add to dashboard Cite

Assembly and utilization of hybrid maize that tolerant low N is one of technology application to resolve limitation of N for hybrid maize in the suboptimal field. The objectives of this research were to select the genotype of hybrid maize that tolerant low N and determine the plant characters to be used as selecting indicator for hybrid maize that tolerant low N. Research conducted at the Experimental Farm of Indonesian Cereal Research Institute, Maros from June-November 2014. This research was arranged in split plot design with three replication. The main plot was the dose of nitrogen fertilizer that consisted of 0 kg N/ha (without N fertilization), 100 kg N/ha (low dose of N) dan 200 kg N/ha (normal dose of N). The subplot was 60 hybrid maize genotypes including control varieties P-27, NK-33, Bisi-2, and Bima-3. The results showed that reduction of 67,13% grain yield was observed in the hybrid maize without N fertilization and reduction of 33,08% was observed in hybrid maize with low N fertilization. Based on tolerance index in low N stress, the varieties HLN03, HLN17, HLN18, HLN24, HLN25, HLN32, HLN35, HLN39, HLN46, and HLN47 were grouped into hybrid maize genotype that tolerant low N with grain yield range 8,37 to 10,02 t/ha, and the highest grain yield was resulted from genotype HLN 32 (10,02 t/ha). Stepwise regression analysis demonstrated that some characters, those are leaf width, male flowering age, leaf aging, percentage of abnormal cobs, cob length, cob diameter, and kernel yields can be used as indicators for hybrid maize that tolerant low N.

show abstract

“…The increase in N uptake through K application ensures increased N use efficiency [22]. The efficiency of N and K fertilizer application is affected by numerous factors, including soil type, the soil's original N and K supplying capacity, crop cultivars, organic matter, and the levels of other nutrients [23,24]. The interactions between N and K on crop growth and final yield which occur at the agronomic level are due to their underlying physiological interactions on tissue hydration and osmotic adjustment.…”

Section: Introductionmentioning

confidence: 99%

Changes in N, K, and Fatty Acid Composition of Black Cumin Seeds Affected by Nitrogen Doses under Supplemental Potassium Application

Aytaç

Gulmezoglu

Saglam

et al. 2017

Journal of Chemistry

View full text Add to dashboard Cite

This study was carried out to determine the efficiency of nitrogen (N) doses (0, 30, 60, and 90 kg N ha −1 ) under supplemental potassium (K) application (50 kg K 2 O ha −1 ) on black cumin in 2011 and 2012. The results showed that increased N levels resulted in increasing seed yield and N and K contents in seed, while oil content decreased. The seed yield and oil yield were peaked at the doses of 60 kg N ha −1 and 50 kg K ha −1 . An increase in N doses caused a reduction in oil content regardless of K supply. Saturated fatty acids and oleic acid were slightly increased by K application, while minor changes in linoleic acid were detected. It was concluded that 60 kg N ha −1 with supplemental K application should be advised for enhancement in seed yield, oil yield, and N and K contents in seeds of black cumin without significant changes in fatty acid composition.

show abstract

Nitrogen use efficiency of maize and spring barley under potassium fertilization in long-term field experiment

Cited by 14 publications

References 14 publications

Effect of potassium levels on teff (Eragrostis tef (Zucc.) Trotter) growth and yield in Central Highland Vertisols of Ethiopia

Effect of potassium levels on teff (Eragrostis tef (Zucc.) Trotter) growth and yield in Central Highland Vertisols of Ethiopia

Indeks Toleran dan Evaluasi Karakter Seleksi Jagung Hibrida terhadap Pemupukan N Rendah

Changes in N, K, and Fatty Acid Composition of Black Cumin Seeds Affected by Nitrogen Doses under Supplemental Potassium Application

Contact Info

Product

Resources

About