Root growth dynamics and biomass input by Nordic annual field crops

Pietola, Liisa; Alakukku, Laura

doi:10.1016/j.agee.2005.01.009

Cited by 77 publications

(52 citation statements)

References 29 publications

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“…3) is typical under Nordic conditions, and found also for annual ryegrass in field conditions in Southern Finland (Pietola and Alakukku 2005). Based on botanical analyses of the present study, thriving greens had 47.5% annual bluegrass and 52.5% creeping bentgrass and winter-damaged greens 40.9% and 59.1%, respectively.…”

Section: Root Growth Dynamicsmentioning

confidence: 99%

Root growth dynamics in golf greens with different compression intensities and winter survival

Marjamäki¹,

Pietola²

2008

AFSci

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The aim of this study was to measure root growth dynamics under Nordic putting green conditions in order to estimate the sensitivity of root growth to winter damages and compression. Root numbers of turfgrasses were measured from soil depths of 0-40 cm by minirhizotrons. The minirhizotrons tubes were installed in the most compressed (center) and less walked (edge) parts of putting greens with good or weak winter survival. The highest root numbers were recorded under less walked green edge areas with good winter survival. The lowest root numbers were measured from center areas of greens, especially from areas suffering winter damage in previous years. Morphological parameters of roots were studied by a destructive soil sampling method in midseason 1998. Based on image analysis of washed roots, root length density at soil depths of 0-2.5 cm was 400 cm cm -3 in greens of weak winter survival and up to 900 cm cm -3 in greens of good winter survival. Our findings emphasize that root growth of turfgrasses is highly dynamic and sensitive to compression despite of non significant effects on soil porosity. Reduced root growth of greens with weak winter survival continued despite of recovery of shoot growth.

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Section: Root Growth Dynamicsmentioning

confidence: 99%

Root growth dynamics in golf greens with different compression intensities and winter survival

Marjamäki¹,

Pietola²

2008

AFSci

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“…However, over a limited time period such features of a crop can be assumed to be constant and therefore constant parameters can be used. For instance, in a previous study, the amount of roots for barley and oats was found to steadily increase around the first two months that covers the most of the vegetative growth (Pietola and Alakukku 2005). Some of the crop models (e.g.…”

Section: Model the Parameters And The Values For Parametersmentioning

confidence: 99%

“…Kleemola et al 1996, Kleemola et al 1998 or root growth (e.g. Pietola and Alakukku 2005) are known to change during the growing season. However, over a limited time period such features of a crop can be assumed to be constant and therefore constant parameters can be used.…”

Section: Model the Parameters And The Values For Parametersmentioning

confidence: 99%

Testing the use of an analytical and mechanistic C3 - biomass accumulation model for precision fertilization

Hakojärvi

Hautala

Alakukku

2014

AFSci

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A single and uniform fertilizer application may lead to ineffective crop nutrient uptake and use. In order to enhance nutrient use efficiency the application should be adjusted according to the need of the cultivated crop. This task is challenging because weather is unknown and unpredictable over the upcoming growing season. One solution is site-specific fertilizer application in several separate events throughout the season. Such a precision fertilization method requires information on the current crop state (e.g. the availability of water and nutrients in the soil) and a crop growth model that aims to assess current crop growth and near future needs. A field experiment with varying radiation, precipitation and nutrient conditions was established to test our crop growth model performance. Spring wheat (Triticum aestivum L.) was grown using three fertilization rates with three precipitation and two radiation treatments within each fertilization treatment. The observed crop biomass accumulation in the highest fertilization treatment was considered as the highest possible in the prevailing conditions. The simulated (maximal) biomass accumulation was in agreement with the highest observed biomass yield. The results were found promising for further use of the model in crop growth evaluation during the growing season.

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“…We highlight that in both locations the hybrid K 10050 showed the higher values of dry mass (Table 1). In cultivation system, where the aerial part of the plant is harvested for grain extraction, animal food or biofuel material, the part below the soil becomes the main contributor to the incorporation of carbon in the soil (Pietola and Alakukku, 2005). Thus, the high production of dry mass in root highlights that canola is an important alternative to incorporate the carbon in the soil compared to other crops such as wheat, which present an average of 410 kg.ha -1 of dry mass in the root (Gan et al, 2009).…”

Section: Characterization Of Root System Growthmentioning

confidence: 99%

Root growth and productivity of conventional and herbicide-tolerant canola in contrasting environments

Mattioni¹,

Caverzan²,

Sozo³

et al. 2017

Aust J Crop Sci

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The canola (Brassica napus L. oil variant) is considered as a winter crop alternative in south Brazil. Thus, the aim of this study was to compare the root growth and the productivity components of hybrid grains of conventional and herbicide tolerant canola in different localities. The experiments were conducted in the municipality of Passo Fundo, Rio Grande do Sul state and Guarapuava, Paraná state, Brazil. The randomized block design with four replication was used. The genotypes evaluated were: Hyola 61 and H92002 (conventional), Hyola 571 CL and K10050 (imidazolinone-resistant), and Hyola 751 TT (triazine-resistant). In order to evaluate the root system, soil monolith were collected and image analysis measuring the superficial area and the total root volume of the sample in diameter classes, root density and specific surface area were done. The grains productivity components and the number of branches in the plant were measured through the number of siliques in the branches. The productivity of the grains and the thousand grain mass were measured as well. The canola hybrid presented higher root length, surface area and volume in the diameter scale between 1 and 5 mm of density. In addition, there were variations in the growth of roots and grain productivity in different environments, in which imidazolinone-tolerant hybrids presented higher development of the roots, as well as, higher grain productivity in the different environment studied.

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Root growth dynamics and biomass input by Nordic annual field crops

Cited by 77 publications

References 29 publications

Root growth dynamics in golf greens with different compression intensities and winter survival

Root growth dynamics in golf greens with different compression intensities and winter survival

Testing the use of an analytical and mechanistic C3 - biomass accumulation model for precision fertilization

Root growth and productivity of conventional and herbicide-tolerant canola in contrasting environments

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