Root development of vegetable crops
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Measurements were made at intervals during the growth of seven different vegetable crops grown on the same soil to find how far root development and crop growth could be described by simply derived equations and to find how far the parameter values varied from crop to crop.
For each crop K1 ln W+W, (where W is total plant dry weight, t ha−1 and K1 is equal to 1 t ha−1) was linearly related to time from emergence, as in past experiments.
The derived equation $$\ln L = c_j + b_j \ln W - mt$$ where L is total root length per unit area, t is time from emergence, cj and bj are coefficients that depend on the crop (j) and m is a coefficient having the same value for all crops, removed 89.4% of the total variance in ln L. The best fit was obtained with a value of m that implied that about 3% of the root carbon was mineralized each day.
Generally the logarithm of root density declined linearly with increasing depth. Most of the variation between the gradients of these relations for the different crops was removed by a single regression against logarithm of total root length.
The main discernible differences between species in their rooting patterns were that root length for a given top weight of legumes was about half that of non legumes, that the development of storage roots was associated with a less steep decline in root density with depth than for other crops and that onions were exceptional in that the depth to which their roots penetrated did not change appreciably during much of the growing season.
A single linear relationship between root depth and top weight (r 2=0.85) covered all non-leguminous crops except onions and another relationship (r 2=0.80) covered the legumes.
- Atkinson D and Wilson S A 1979 The root-soil interface and its significance for fruit tree crops of different ages.In The soil-root interface. Eds. J L Harley and R Scott Russell. Academic Press. London pp 259–271.
- Barber S A 1978 Growth and nutrient uptake of soybean roots under field conditions. Agron. J. 70, 457–461.
- Biscoe P V, Scott R K and Monteith J L 1975 Barley and its environment. III Carbon budget of the stand. J. Appl. Ecol. 12, 269–293.
- Brouwer R and De Wit C T 1969 A simulation model of plant growth with special attention to root growth and its consequences.In Root Growth. Ed. W J Whittington. Butterworths. London. pp 224–244.
- Burns I G 1980 Influence of the spatial distribution of nitrate on the uptake of N by plants: a review and a model for rooting depth. J. Soil Sci. 31, 155–173.
- Edwards J H and Barber S A 1976 Nitrogen uptake characteristics of corn roots at low N concentration as influenced by plant age. Agron. J. 68, 17–19.
- Edwards J H and Barber S A 1976 Phosphorus uptake rate of soybean roots as influenced by plant age, root trimming and solution P. Agron. J. 68, 973–975.
- Frissel M J and van Veen J A 1981 Simulation of nitrogen behaviour of soil-plant systems. Centre for Agricultural Publishing and Documentation. Wageningen. 277 p.
- Garwood E A 1967 Seasonal variation in appearance and growth of grass roots. J. Br. Grassl. Soc. 22, 121–129.
- Gerwitz A 1977 A split tube method of soil sampling. J. Appl. Ecol. 14, 225–227.
- Gerwitz A and Page E R 1974 An empirical mathematical model to describe plant root systems. J. Appl. Ecol. 11, 773–782.
- Greenwood D J 1981 Crop response to agronomic practice.In Mathematics and Plant Physiology. Eds. D A Rose and D A Charles-Edwards. Academic Press. London. pp 195–216.
- Greenwood D J and Barnes A 1978 A theoretical model for the decline in the protein content in plants during growth. J. Agric. Sci. Camb. 91, 461–466.
- Greenwood D J, Cleaver T J, Loquens S M H and Niendorf K B 1977 Relationship between plant weight and growing period for vegetable crops in the U.K. Ann. Bot. 41, 987–997.
- Gregory P J, McGowan M, Biscoe P V and Hunter B 1978 Water relations of winter wheat 1. Growth of the root system. J. Agric. Sci. Camb. 91, 91–102.
- Hackett C 1969 Quantitative aspects of the growth of cereal root systems.In Root Growth. Ed. W J Whittington. Butterworths. London. pp 134–147.
- Head G C 1968 Seasonal changes in the diameter of secondarily thickened roots of fruit trees in relation to growth of other parts of the tree. J. Hortic. Sci. 43, 275–282.
- Head G C 1968 Studies of growing roots by time lapse cinematography. 9th Int. Congr. Soil Sci. Trans. 1, 751.
- Mengel D B and Barber S A 1974 Development and distribution of the corn root system under field conditions. Agron. J. 66, 341–344.
- Ministry of Agriculture Fisheries and Food 1973 Fertilizer Recommendations Bulletin 209. London, HMSO.
- Pearsall W H 1927 Growth studies VI. On the relative sizes of growing plant organs. Ann. Bot. 41, 549–446.
- Prikryl Z and Vancura V 1980 Root exudates of plants VI. Wheat root exudation as dependent on growth concentration gradient of exudates and the presence of bacteria. Plant and Soil 57, 69–83.
- Rowse H R 1974 The effect of irrigation on the length weight and diameter of lettuce roots. Plant and Soil 40, 381–391. CrossRef
- Rowse H R and Phillips D A 1974 An instrument for estimating the length of root in a sample. J. Appl. Ecol. 11, 309–314.
- Sauerbeck D R and Johnen B G 1977 Root formation and decomposition during plant growth.In Soil organic matter studies. Proceedings of a symposium organized by IAEA FAO and Agrochemica Braunschweig September 1976. Volume 1, pp 141–148.
- Sivakumar M V K, Taylor H M and Shaw, R H 1977 Top and root relations of field-grown soybeans. Agron. J. 69, 470–473.
- Tinsley J 1950 The determination of organic carbon in soils by dichromate mixtures. Trans. Fourth Internat. Cong. Soil Sci. 1, 161–164.
- Troughton A 1957 The underground organs of the herbage grasses. p 90. Commonwealth Agricultural Bureaux. Farnham Royal, U.K.
- Warneke D D and Barber S A 1974 Root development and nutrient uptake by corn grown in solution culture. Agron. J. 66, 514–516.
- Welbank P J, Gibb M J, Taylor P J and Williams E D 1974 Root growth of cereal crops. Annu. Rep. Rothamsted Exp. Stn. 1973 Part 2, pp 26–66.
- Whitfield W A D 1974 The soils of the National Vegetable Research Station, Wellesbourne. National Vegetable Research Station Annu. Rep. 1973 pp 21–30.
- Root development of vegetable crops
Plant and Soil
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