Effect of soil strength on root growth under different water conditions

Yapa, L. G. G.; Fritton, D. D.; Willatt, S. T.

doi:10.1007/bf02197574

Cited by 24 publications

(13 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1966;Camp and Lund 1968;Cockroft et al 1969). Other authors (Grimes et al19'15;Gerard et al 1982; Ehlers et al 1983;Yapa et al 1988;Vepraskas and Wagger 1989) have reported higher values. However, these latter studies were performed under field conditions, and the higher critical strength was usually attributed to the presence ofbiopores through which roots penetrated, despite high soil matrix strength.…”

Section: Root Penetrationmentioning

confidence: 70%

Root penetration profiles of wheat and barley as affected by soil penetration resistance in field conditions

Martino¹,

Shaykewich²

1994

Can. J. Soil. Sci.

View full text Add to dashboard Cite

. 1994. Root penetration profiles of wheat and barley as affected by soil penetration resistance in field conditions. Can. J. Soil Sci. 74: igZ-ZOO. e stuOy was conducted on three Manitoba soils (Marquette heavy clay, Fortier silty clay loam, and Souris loamy sand) with the objectives of: (a) assessing the effects of contrasting tillagesystems on various soil physical properties; and O) ielating root penetiation of cereals to these properties. The zero tillage (ZT) and conventional tif^fale (Cf) treatments hadbeen esta'blished between 3 (Marquette and Souris) and 10 (Fortier) years prior to the initiation of the stridy. Penetrometer resistance (PR), bulk density (BD) and pore size distribution (PSD) were measured at various depths and iimes during two growing ,"uronr. The effects of tillage systems on soil properties were generally small, particularly in the poorly strucirred S-ouris l6amy sand. PR in the top 10 cm of soil tended to be higher under ZT than^under C1.. pR uarleO mart 100^1m in diameter) near the soil surface tended to be higher under ZT ihan under CT. There was no evidence of any detrimenlal effect of poor aeration on the final root penetration p.oFtl.r of wheat. The proportion of roots penetrating the soil was inversely relatec to iR. Soil strength critical for root penetration was determined to be 2 MPa and was independent of soil type. In most situations' however, roots were able to grow inio soil with mechanical impedance greater than 2 MPa, possibly by making use of biochannels and spatial and temporal heterogeneity in the soil stmcture.

show abstract

Section: Root Penetrationmentioning

confidence: 70%

Root penetration profiles of wheat and barley as affected by soil penetration resistance in field conditions

Martino¹,

Shaykewich²

1994

Can. J. Soil. Sci.

View full text Add to dashboard Cite

show abstract

“…Therefore, in dry soil the maximum strength of soil that a root can penetrate is decreased because of the decrease in maximum growth pressure. Yapa et al (1988) also demonstrated that matric potential and soil strength effects on root growth were independently significant. They found that a logistic relationship could best represent the data:…”

Section: Soil Water Statusmentioning

confidence: 85%

“…A few attempts elsewhere, however, have been made to model the effects of soil strength on crop root growth (Jakobsen and Dexter 1987;Yapa et al 1988;Jones et al 1991;Rickman et al 1992;Bengough 1997). Soil strength (measured as penetrometer resistance) was related to soil bulk density and water content (Taylor et al 1966;Taylor and Ratliff 1969;Jakobsen and Dexter 1987;Yapa et al 1988;Bengough 1997).…”

Section: Soil Strength (Hardness)mentioning

confidence: 99%

“…Soil strength (measured as penetrometer resistance) was related to soil bulk density and water content (Taylor et al 1966;Taylor and Ratliff 1969;Jakobsen and Dexter 1987;Yapa et al 1988;Bengough 1997). Most results show that root elongation rate decreases from its maximum value in an exponential-like manner with increasing soil strength.…”

Section: Soil Strength (Hardness)mentioning

confidence: 99%

See 1 more Smart Citation

Modelling the growth and water uptake function of plant root systems: a review

Wang

Smith

2004

Aust. J. Agric. Res.

125

View full text Add to dashboard Cite

Crop models have been intensively used as a tool to analyse the performance of cropping systems under variable climate in terms of productivity, profitability, and off-site impact. The importance of modelling the function of plant roots in water and nutrient uptake from the soil is becoming increasing clear with the expanding application areas of crop models. This paper reviews the approaches and assumptions used in growth and uptake modelling of plant roots, and how the responses of plant root system to internal and external factors are captured in the widely used crop models. Most modelling approaches are based on one of the following assumptions: (i) that plant roots are uniformly distributed in homogenous soil layers and all roots have the same ability for uptake, or (ii) that plant root length is always sufficient for resource uptake in rooted soil layers. In structured soils, an overestimation of water uptake is likely to be expected. Further studies on root growth, distribution, and function in structured soils will require quantification of soil structures and root distribution patterns; and for non-uniformly distributed plant populations, spatial distribution of plant roots and non-uniform uptake need to be modelled. Root architecture modelling may help to address such issues. However, in order for the model to be useful at the field production level, simplified approaches that require easily measurable inputs need to be developed.Some examples are given. The oversimplification of root response to soil drying and hardness is likely to lead to overestimation of root growth and water uptake in dense soils. A soil strength factor needs to be incorporated so that the improved model can help evaluate the effect of subsoil compaction on production and resource use. Responses of root growth and uptake to soil salinity, boron toxicity, and extreme pH need to be further investigated if models are to be used for evaluation of crop performance in such environments. Effect of waterlogging also needs to be added for use of the model on heavy clay soils under irrigation or concentrated rainfall. There is an urgent need for joint efforts of crop physiologists, agronomists, breeders, and soil scientists to integrate interdisciplinary knowledge and to collect data that better describe the crop root system and its growth and uptake ability, to quantify plant process level responses, and for better soil quantification. Such knowledge and data are essential for improvement of model performance and successful applications. Lucerne Oat Tap root Branches Crown roots Seminal roots Fig. 1. Crop root system. Lucerne has one tap root and branches, whereas oat has seminal and crown roots (modified from Weaver 1926).Growth and water uptake of plant roots

show abstract

“…반면 점토와 미사의 함량증가는 상대적으로 배수가 불량해 지는 단점을 가지고 있다 (Billings, 1987;Davidson and Lefebvre, 1993;Sands and Bowen, 1978;Sands et al, 1979;Theodorou et al, 1991;Yapa et al, 1988). 토성의 종류 즉 입자의 구성비율은 유기물의 무기화 (Hassink et al, 1993), 입단구조 (Mamedov et al, 2007;Tisdall and Oades, 1982), 미생물 군집구조의 다양성 (Bach et al, 2010;Chau et al, 2011) 등 토양 물리적, 생물학적 안정성 에 큰 영향을 준다 (Juma, 1993 Table 2.…”

Section: 한편 국내 농경지 토양의 표토 토성은 사양토 양토 그 리고 미사질양토가 비슷한 비율로 전체 토성의 90%unclassified

The Effect of Soil Texture on Fruits and Growth Properties in Rabbiteye Blueberries

Kim¹,

Kwack²,

Lee³

et al. 2015

Korean Journal of Soil Science and Fertilizer

View full text Add to dashboard Cite

show abstract

Effect of soil strength on root growth under different water conditions

Cited by 24 publications

References 15 publications

Root penetration profiles of wheat and barley as affected by soil penetration resistance in field conditions

Root penetration profiles of wheat and barley as affected by soil penetration resistance in field conditions

Modelling the growth and water uptake function of plant root systems: a review

The Effect of Soil Texture on Fruits and Growth Properties in Rabbiteye Blueberries

Contact Info

Product

Resources

About