Dry Matter and Nitrogen Accumulation and Root Morphological Characteristics of Two Clonal Selections of ‘Russet Norkotah’ Potato as Affected by Nitrogen Fertilization

Sharifi, Mehdi; Zebarth, Bernie J.; Hajabbasi, Mohammad Ali; Kalbasi, M.

doi:10.1080/01904160500323552

Cited by 45 publications

(43 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other crops showed no effect of N fertilization or distribution on root density and ⁄ or root depth (Schenk et al, 1991;ThorupKristensen & Van den Boogaard, 1999;Rather et al, 2000;Vamerali et al, 2003;Christiansen et al, 2006). This was contrasted by many studies showing that application of N or organic matter increased root density in surface soil layers (Opena & Porter, 1999;Sharifi et al, 2005) or at depth (Vamerali et al, 2003), and that final root depth was increased (Barraclough et al, 1989). However, in these fertilizer studies, interpretation of the effect of soil N inorg distribution on root growth cannot be distinguished from the effect of increased availability of nutrients on overall crop performance.…”

Section: Introductionmentioning

confidence: 73%

“…Further due to limited sampling depth, effects of N fertilizer or distribution on maximum root depth and distribution are seldom reported, even for shallow-rooted crops (e.g. Sharifi et al, 2005). Against this background, the question arises of how differences in distribution of soil N inorg affects root density and root depth of crops under conditions where crop N requirements are met, but not greatly exceeded; i.e.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops

Kristensen

Thorup‐Kristensen

2007

Soil Use and Management

View full text Add to dashboard Cite

Information is needed about root growth and N uptake of crops under different soil conditions to increase nitrogen use efficiency in horticultural production. The purpose of this study was to investigate if differences in vertical distribution of soil nitrogen (N inorg ) affected root growth and N uptake of a variety of horticultural crops. Two field experiments were performed each over 2 years with shallow or deep placement of soil N inorg obtained by management of cover crops. Vegetable crops of leek, potato, Chinese cabbage, beetroot, summer squash and white cabbage reached root depths of 0.5, 0.7, 1.3, 1.9, 1.9 and more than 2.4 m, respectively, at harvest, and showed rates of root depth penetration from 0.2 to 1.5 mm day )1°C)1 . Shallow placement of soil N inorg resulted in greater N uptake in the shallow-rooted leek and potato. Deep placement of soil N inorg resulted in greater rates of root depth penetration in the deep-rooted Chinese cabbage, summer squash and white cabbage, which increased their depth by 0.2-0.4 m. The root frequency was decreased in shallow soil layers (white cabbage) and increased in deep soil layers (Chinese cabbage, summer squash and white cabbage). The influence of vertical distribution of soil N inorg on root distribution and capacity for depletion of soil N inorg was much less than the effect of inherent differences between species. Thus, knowledge about differences in root growth between species should be used when designing crop rotations with high N use efficiency.

show abstract

Section: Introductionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops

Kristensen

Thorup‐Kristensen

2007

Soil Use and Management

View full text Add to dashboard Cite

show abstract

“…The higher WFPS in the furrow reflects accumulation of water in the furrow in large rainfall events, in combination with a higher soil bulk density in the furrow compared with the hill. In addition, the potato root system resides predominantly in the hill (Vos and Groenwold 1986;Sharifi et al 2005) and, therefore, greater soil water uptake by this root system occurs in the hill compared to the furrow (Ruser et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Effect of split application of fertilizer nitrogen on N₂O emissions from potatoes

Burton¹,

Zebarth²,

Gillam³

et al. 2008

Can. J. Soil. Sci.

162

107

View full text Add to dashboard Cite

( availability and increased rainfall resulting in reduced aeration. Split N application was effective in reducing N 2 O emissions by minimizing the supply of NO 3 ( when demand for terminal electron acceptors was high. N 2 O emissions were higher in the potato hill relative to the furrow; however, denitrification rate was higher in the furrow. Nitrate intensity (NI) expresses the exposure of the soil microbial population to NO 3 ( and was calculated as the summation of daily soil nitrate concentration over the monitoring period. Cumulative N 2 O emissions were positively related to NI across year, N fertility treatment and row location. Denitrification was not related to NI, reflecting the primary role of NO 3 ( in influencing the N 2 O:N 2 ratio of denitrification rather than the magnitude of the overall process. Split N application was an effective strategy for reducing N 2 O emissions in years where there was significant rainfall during the period between planting and hilling. ( dans le sol combine´e a`des pre´cipitations plus abondantes, facteurs qui ont nui a`l'ae´ration du sol. L'application fractionne´e d'engrais N re´duit les de´gagements de N 2 O en abaissant la quantite´de NO 3 ( quand la demande d'accepteurs d'e´lectrons finaux est e´leve´e. Les e´missions de N 2 O sont plus importantes sur la butte que dans le sillon; cependant, c'est dans le sillon que la de´nitrification est la plus intense. La charge nitrique (CN) indique le degre´d'exposition de la microflore tellurique aux NO 3 ( et correspond a`la somme de la concentration quotidienne de nitrates dans le sol durant la pe´riode a`l'e´tude. Les e´missions cumulatives de N 2 O sont positivement corre´le´es a`la CN pendant l'anne´e, a`la fertilisation azote´e et a`l'emplacement du rang. La de´nitrification ne pre´sente aucun lien avec la CN, signe que le NO 3 ( joue un roˆle primordial en modifiant le ratio N 2 O:N 2 de la de´nitrification et non l'amplitude du phe´nome`ne. L'application fractionne´e d'engrais N est une bonne strate´gie pour re´duire les e´missions de N 2 O les anne´es ou`il pleut beaucoup durant la pe´riode qui se´pare la plantation du buttage. For personal use only.

show abstract

“…A produção de matéria seca pela planta e a partição para os tubérculos são influenciados por diversos fatores, tais como interceptação luminosa (Harris, 1992), alta temperatura, por aumentar a senescência foliar e reduzir a capacidade fotossintética (Timlin et al, 2006), fotoperíodo (Haverkort e Verhagen, 2008), cultivar (Zebarth, et al, 2006;Geremew et al, 2007), época de cultivo (Mustonen et al, 2010), manejo da cultura (Geremew et al, 2007) e fertilização nitrogenada (Zebarth e Rosen, 2007). Na batata, há produção de matéria seca na parte aérea e nos tubérculos, que acumulam a maior quantidade, atingindo de 68% a 84% da biomassa total produzida pela planta (Sharifi et al, 2005;Nunes et al, 2006). Nunes et al (2006) mostraram que a produção de maté-ria seca dos tubérculos possui relação direta com a área foliar da planta.…”

unclassified

“…É o nutriente de maior impacto sobre a produção e qualidade de tubérculos. Segundo Sharifi et al (2005), a fertilização nitrogenada diminui a relação entre massas de tubérculo e parte aérea da planta. O N influencia a massa de tubérculos produzida por planta e tanto a deficiência quanto o excesso de N reduz a produção de tubérculos (Silva et al, 2009).…”

unclassified

Teor e exportação de macro e micronutrientes nos tubérculos de cultivares de batata em função do nitrogênio

Braun

Fontes

Busato³

et al. 2011

Bragantia

View full text Add to dashboard Cite

Objetivou-se avaliar o efeito de doses de nitrogênio (N) sobre os teores e exportações de macro e micronutrientes nos tubérculos de cultivares de batata das mais plantadas no Brasil. Os experimentos foram desenvolvidos na época de outono/inverno, em solo Podzólico Vermelho-Amarelo Câmbico, de textura argilosa. Foram instalados quatro experimentos, simultaneamente, no campo. Em cada experimento foram avaliadas uma cultivar: Ágata, Asterix, Atlantic e Monalisa e cinco doses de N: 0, 50, 100, 200 e 300 kg ha-1, na forma de sulfato de amônio, aplicadas no sulco. Cada experimento foi instalado no delineamento de blocos casualizados, com quatro repetições. Nas cultivares de batata Ágata, Asterix, Atlantic e Monalisa não há efeito de doses de N sobre o teor de K, Ca, Mg, S, Fe e Zn. O teor de N e a exportação de N, P e Mn pelos tubérculos, ao contrário, foram influenciadas pelas doses de N aplicadas em todas as cultivares, embora com padrões diferenciados.

show abstract

Dry Matter and Nitrogen Accumulation and Root Morphological Characteristics of Two Clonal Selections of ‘Russet Norkotah’ Potato as Affected by Nitrogen Fertilization

Cited by 45 publications

References 17 publications

Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops

Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops

Effect of split application of fertilizer nitrogen on N₂O emissions from potatoes

Teor e exportação de macro e micronutrientes nos tubérculos de cultivares de batata em função do nitrogênio

Contact Info

Product

Resources

About

Dry Matter and Nitrogen Accumulation and Root Morphological Characteristics of Two Clonal Selections of ‘Russet Norkotah’ Potato as Affected by Nitrogen Fertilization

Cited by 45 publications

References 17 publications

Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops

Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops

Effect of split application of fertilizer nitrogen on N2O emissions from potatoes

Teor e exportação de macro e micronutrientes nos tubérculos de cultivares de batata em função do nitrogênio

Contact Info

Product

Resources

About

Effect of split application of fertilizer nitrogen on N₂O emissions from potatoes