Disposition of Nitrogen and Soluble Sugars in Manitou Spring Wheat as Influenced by N Fertilizer, Temperature and Duration and Stage of Moisture Stress

Campbell, C. A.; Davidson, H.; McCaig, T. N.

doi:10.4141/cjps83-008

Cited by 34 publications

(18 citation statements)

References 17 publications

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“…Our experimental site was located in a mountainous inland region with cold rainy winters and cool springs, which may have buffered somewhat the markedly negative effects of early summer drought on plant performance and grain quality. The relatively drier weather conditions in 1999 may have favored an average greater translocation efficiency of N from the vegetative plant parts after anthesis to the grain (Campbell et al, 1983;McNeal et al, 1968), and reduced final grain yield as a result of a faster senescence of the photosynthetic organs (Nicolas et al, 1984).…”

Section: Resultsmentioning

confidence: 99%

Effect of foliar application of N and humic acids on growth and yield of durum wheat

Delfine

Tognetti

Desiderio

et al. 2005

Agron. Sustain. Dev.

177

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-The aim of this study was to monitor the effect of foliar application of humic acid on plant growth, photosynthetic metabolism and grain quality of durum wheat grown in a Mediterranean-type climate. Four fertilization treatments were applied: a non-fertilized control, a crop fertilized with foliar application of humic acid, a crop fertilized with mineral N on soil at sowing, tillering and stem elongation, and a crop fertilized with foliar application of N (ammonium-nitrate solution). Aboveground plant mass accumulation was measured throughout two growing seasons, and grain quality parameters were tested at harvest time. Gas exchange, leaf protein content and Rubisco activity were monitored at different stages of plant development. Differences between years were often relevant due to weather conditions. The foliar application of humic acid caused a transitional production of plant dry mass with respect to unfertilized control and split soil N application. This effect was also evident for grain yield, spike fertility and grain protein content during the two years of the study. Humic acid never affected photosynthesis or stomatal conductance, while Rubisco activity and leaf protein content showed intermediate responses between unfertilized control and split soil N application. We conclude that humic acid had limited promoting effects on plant growth, grain yield and quality, and photosynthetic metabolism of durum wheat crops grown in a typical Mediterranean-type agro-ecosystem of southern Italy, with respect to split soil N application.humic acid / durum wheat / gas exchange / nitrogen / protein / Rubisco / grain quality

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Section: Resultsmentioning

confidence: 99%

Effect of foliar application of N and humic acids on growth and yield of durum wheat

Delfine

Tognetti

Desiderio

et al. 2005

Agron. Sustain. Dev.

177

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“…Su absorción y partición se encuentra determinada en gran medida por la disponibilidad y demanda durante varios estados fenológicos del cultivo (Campbell & De Jong, 2000). Se conoce que el N absorbido previo a la antesis, en los cereales invernales, representa alrededor del 50% al 75% del N total en la planta a cosecha (Austin et al, 1976;Spiertz & Ellen, 1978;Heitholt et al, 1990), dependiendo entre otros factores del cultivar empleado (Takahashi et al, 1996).…”

Section: Introductionunclassified

“…Si la restricción que impone el agotamiento del N del suelo se supera con ofertas mayores (por ejemplo con aportes por fertilización en dosis fraccionadas) se pueden observar aumentos en la absorción postfloración (Osaki et al, 1997;Delogu et al, 1998;Ruiz, 2001). En este caso la magnitud del N absorbida hasta floración también es mayor, pero la proporción que representa del total absorbido hasta la madurez se reduce (Spiertz & Ellen, 1978;Campbell et al, 1983;Dalling, 1985;Delogu et al, 1998;Ruiz, 2001). En la medida que la restricción nitrogenada es menos marcada, la curva de acumulación sigue la marcha de la acumulación de la materia seca (Ruiz, 2001).…”

Section: Introductionunclassified

Acumulación, removilización, absorción postantesis y eficiencia de utilización de nitrógeno en trigo bajo diferentes labranzas y fertilizaciones

Golik

Chidichimo

Pérez

et al. 2003

Pesq. agropec. bras.

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El objetivo de este trabajo fue analizar la acumulación, removilización, absorción postantesis y la eficiencia en la utilización de N bajo dos sistemas de labranza (reja y cincel) y diferentes tipos de fertilización, en los cultivares de trigo pan Buck Pronto y Buck Charrúa. Los tratamientos de fertilización fueron: testigo sin el agregado de N, aplicación de 90 kg ha-1 de N como urea a la siembra, aplicación de 90 kg ha-1 de N como nitrato de amonio calcáreo a la siembra y aplicación de N como urea y como nitrato de amonio calcáreo en dosis de 45 kg ha-1 a la siembra más 45 kg ha-1 a fin de macollaje, respectivamente. Se encontraron diferencias en el N acumulado entre sistemas de labranzas; con cincel se acumuló 18 kg ha-¹ más que bajo reja, pero esto no se tradujo en el porcentaje de N contribuido al grano por removilización ni por absorción postantesis. La fertilización aumentó el N acumulado en un promedio de 50 kg ha-1. A su vez provocó un aumento en la contribución al grano del N removilizado, pero no mejoró el aporte del N absorbido postantesis, ni aún en la aplicación en dos momentos. Los cultivares presentaron diferencias en el N acumulado y en el porcentaje aportado al grano por removilización y absorción postantesis. La eficiencia de utilización del N dependió de la labranza y de la fertilización.

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“…In barley (Hordeum vulgare L.), Xu and Juma (1992) found root mass increased until heading then decreased or remained constant thereafter, while the AG plant biomass kept increasing to maturity. The loss of root mass after reaching a maximum (flowering to podding) is probably due to a transfer of assimilates into the developing grains (Campbell et al 1983). It is also possible that older roots decay after plants complete their flowering (Xu and Juma 1992).…”

Section: Root Biomass and Dstributionmentioning

confidence: 99%

Root mass for oilseed and pulse crops: Growth and distribution in the soil profile

Gan¹,

Campbell²,

Janzen³

et al. 2009

Can. J. Plant Sci.

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. 2009. Root mass for oilseed and pulse crops: Growth and distribution in the soil profile. Can. J. Plant Sci. 89: 883Á893. Crop roots transport water and nutrients to the plants, produce nutrients when they decompose in soil, and provide organic C to facilitate the process of C sequestration in the soil. Many studies on these subjects have been published for cereal crops, but little is known for oilseed and pulse crops. This study was conducted at Swift Current, Saskatchewan, in 2006 and 2007 to characterize the root growth and distribution profile in soil for selected oilseed and pulse crops. Three oilseed [canola (Brassica napus L.), mustard (Brassica juncea L.), flax (Linum usitatissimum L.)], three pulse crops [chickpea (Cicer arietinum L), dry pea (Pisum sativum L.) lentil (Lens culinaris Medik.)], and spring wheat (Triticum aestivum L.) were grown in 100 cm deep )15 cm diameter lysimeters pushed into a silt loam soil. Crops were studied under rainfed and irrigated conditions. Lysimeters were removed from the field and sampled for above-ground (AG) and root mass at different depths at five growth stages. Root mass was highest for canola (1470 kg ha(1 ) and wheat (1311 kg ha ). The root mass of oilseeds and pulses reached a maximum between late-flowering and late-pod stages and then decreased to maturity, while wheat root mass decreased to maturity after reaching a maximum at boot stage. On average, about 77 to 85% of the root mass was located in the 0 (40 cm depth. Canola, mustard, and wheat rooted to 100 cm, while the pulses and flax had only 4 to 7% of the root mass beyond the 60 cm depth. Irrigation only increased root mass in the 0Á20 cm depth. Roots developed more rapidly than AG biomass initially, but the ratio of root biomass to AG biomass decreased with plant maturity. At maturity, the ratio of root biomass to AG biomass was 0.11 for dry pea, and between 0.20 and 0.22 for the other crops tested. Our findings on rooting depths and root mass distribution in the soil profile should be useful for modelling water and nutrient uptake by crops, estimating C inputs into soil from roots, and developing diverse cropping systems with cereals, oilseeds and pulses for semiarid environments. Les cultures ont e´te´e´tudie´es sous re´gime pluvial et sous irrigation. Les lysime`tres ont e´te´retire´s du champ, puis on les a e´chantillonne´s afin de mesurer la masse des organes ae´riens et celle des racines a`diverses profondeurs, a`cinq stades de croissance. Ce sont le canola et le ble´qui enregistrent la plus forte masse racinaire (1 470 kg et 1 311 kg par hectare, respectivement). Suivent la moutarde (893 kg par hectare) et le pois chiche (848 kg par hectare), le pois et le lin arrivant bon derniers (524 kg et 440 kg par hectare, respectivement). La masse racinaire des ole´agineux et des le´gumineuses atteint un maximum entre la fin de la floraison et la fin de la production des gousses. Ensuite, elle diminue jusqu'a`ce que la plante parvienne a`maturite´. En revanche, la masse racinaire du ble´commence a`diminu...

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Disposition of Nitrogen and Soluble Sugars in Manitou Spring Wheat as Influenced by N Fertilizer, Temperature and Duration and Stage of Moisture Stress

Cited by 34 publications

References 17 publications

Effect of foliar application of N and humic acids on growth and yield of durum wheat

Effect of foliar application of N and humic acids on growth and yield of durum wheat

Acumulación, removilización, absorción postantesis y eficiencia de utilización de nitrógeno en trigo bajo diferentes labranzas y fertilizaciones

Root mass for oilseed and pulse crops: Growth and distribution in the soil profile

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