Soil factors affecting tree growth and root development in a citrus orchard

Nel, D. J.; Bennie, A. T.P.

doi:10.1080/02571862.1984.10634107

Cited by 9 publications

(7 citation statements)

References 4 publications

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“…In citrus Patt et al (1966), based on a survey encompassing many different soil types, found that root density declined where the soil air filled porosity (AFP) at field capacity was between 5 to 10%. Nel and Bennie (1984) measured citrus root development in three soil types and concluded that when the soil AFP at field capacity was less than 15% there was little root development. Vines appear to be more tolerant as we found at least 25% of the roots in soil with an AFP at field capacity of less than or equal to 6%.…”

Section: Discussionmentioning

confidence: 99%

Distribution of grapevine roots and salt under drip and full-ground cover microjet irrigation systems

Stevens

Douglas²

1994

Irrig Sci

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We describe the three dimensional variation in root length density (Lv) within a quarter of the planting area of Colombard grapevines on Ramsey rootstock grown under drip and full-cover microjet irrigation. Under drip irrigation roots were concentrated under the vine row, whereas under microjet irrigation roots were evenly spread across the ~planting area. The maximum L v were 1.2 and 0.6 cm/cm-' and the estimated total root lengths per vine were 32 and 26 km for drip and microjet irrigated vines, respectively. Under drip irrigation, 56% of the variation in Lv could be accounted for as a function of depth and radial distance into the row, and under microjet, 45% of the variation in L v could be accounted for as a function of depth. Twenty five per cent of the vine roots were in soil with an air filled porosity at field capacity of 6% or less. Based on the variation of root length per unit area (La) across a quarter of the planting area and between vines, we concluded that selection of a location at which the L a would be representative of that in the entire irrigation unit is feasible in microjet irrigated vines but not in those irrigated with drip. The absence of a location representative of L~ confounds the scheduling of drip irrigation based solely on measurements of soil moisture.

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Section: Discussionmentioning

confidence: 99%

Distribution of grapevine roots and salt under drip and full-ground cover microjet irrigation systems

Stevens

Douglas²

1994

Irrig Sci

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“…The effect of ridging on the physical properties of vineyard soils was intensively investigated by Myburgh & Moolrnan (l991a;1991b), Myburgh (1994) and, of sugar cane soils, by Van Antwerpen & George (1991). An investigation into soil factors affecting growth and root development of citrus trees by Nel & Bennie (1984) revealed that poor irrigation scheduling, leaving most of the root zone with less than 15% air-filled porosity, was the major reason for poor performance.…”

Section: Soil Aerationmentioning

confidence: 99%

Advances in soil physics and soil water management research in South Africa, 1979–2003

Bennie

Hensley

2004

South African Journal of Plant and Soil

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“…Still, it is generally accepted a decline in growth as an usual plant response to saturated soils. Restricted tree and root growth was observed when air capacity was reduced to level less than 15% (Nel and Bennie, 1984). Soil saturation up to close to flooding negativelly affecting growth-related parameters in tree species has also been reported (Sakio, 2005;Oliveira and Joly, 2010;Allen et al, 2019).…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 91%

Effect of Cattle Manure on Young Plants of Khaya senegalensis Submitted to Different Irrigation Intervals

Mendes¹,

Cairo²,

Leite³

et al. 2020

JAS

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This study aimed to evaluate the effect of cattle manure on young plants of Khaya senegalensis submitted to different irrigation intervals. A greenhouse experiment was carried out during 2017 cold season, based in a 5x3 factorial arrangement – cattle manure fertilizing with 0, 10, 20, 30 and 40% doses, and 3-day, 6-day and 12-day irrigation intervals. Water potential, relative water content (RWC), water consumption (WC), water use efficiency (WUE), chlorophyll content estimation (SPAD index), plant height, stem diameter, plant total dry mass and free amino acid and proline content were measured. Irrigation intervals had no significant effect on physiological traits and plant water relationships, except for WUE, which was higher under 12-day irrigation interval. This was assumed as an indication of non-occurrence of water stress, even under the longest irrigation interval. Cattle manure, in turn, played a significant effect on these traits, except for water potential, irrespective of irrigation intervals. Increasing cattle manure doses improved RWC (just doses up to 20%), reduced WC and increased WUE, SPAD index, and both free amino acid and proline contents. On the other hand, growth-related parameters were not affected by cattle manure, but a significant effect of irrigation intervals was observed. Both plant height and total dry mass were lower under 3-day and 6-day irrigation intervals. We suspect a possibly low evapotranspiration, given the relatively low temperatures of that season (14-16 ºC), which may have reduced the demand for irrigation in the experimental period. Thus, soil moisture under the shorter irrigation intervals may have increased until reach to a close to saturation level, limiting the amount of soil oxygen and hampers nutrient uptake.

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Soil factors affecting tree growth and root development in a citrus orchard

Cited by 9 publications

References 4 publications

Distribution of grapevine roots and salt under drip and full-ground cover microjet irrigation systems

Distribution of grapevine roots and salt under drip and full-ground cover microjet irrigation systems

Advances in soil physics and soil water management research in South Africa, 1979–2003

Effect of Cattle Manure on Young Plants of Khaya senegalensis Submitted to Different Irrigation Intervals

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