DOI: 10.1111/j.1469-8137.1975.tb01409.x. COMPARISON OF THE EFFECTS OF A LOCALISED SUPPLY OF PHOSPHATE, NITRATE, AMMONIUM AND POTASSIUM ON THE GROWTH OF THE SEMINAL ROOT SYSTEM, AND THE SHOOT, IN BARLEY

COMPARISON OF THE EFFECTS OF A LOCALISED SUPPLY OF PHOSPHATE, NITRATE, AMMONIUM AND POTASSIUM ON THE GROWTH OF THE SEMINAL ROOT SYSTEM, AND THE SHOOT, IN BARLEY

10.1111/j.1469-8137.1975.tb01409.x

Crossref journal-article

Wiley

New Phytologist (311)

Abstract

SUMMARYBarley plants were grown for 21 days in sand culture, continuously irrigated with nutrient solution. The rooting depth was divided into three compartments, one above another, such that different zones of the root system could be supplied with very low or high concentrations of a single inorganic nutrient, all other nutrients being maintained at a high concentration.Exposure of parts of the main seminal roots (axes) to high concentrations of phosphate caused a localized promotion of the initiation and subsequent extension of both first and second order laterals, compared with zones receiving very low concentrations of phosphate. This resulted in considerable modification to root form, but with only a small depression in shoot growth, compared with control plants receiving an ample supply to all parts of the root system. The extension of seminal axes was little affected by the concentration of phosphate to which they were exposed.Similar responses to those described for phosphate occurred with variation in concentration of nitrate or ammonium, but with potassium a localized supply promoted the growth of laterals to approximately the same extent as controls throughout the entire root system.The experiments show that adequate external concentrations of nitrogen and phosphorus are required by any part of the root system for optimal growth of laterals, but not axes. Possible mechanisms which compensate shoot growth when nutrients are supplied to only part of the root system, and agronomic implications, are discussed.

Bibliography

DREW, M. C. (1975). COMPARISON OF THE EFFECTS OF A LOCALISED SUPPLY OF PHOSPHATE, NITRATE, AMMONIUM AND POTASSIUM ON THE GROWTH OF THE SEMINAL ROOT SYSTEM, AND THE SHOOT, IN BARLEY. New Phytologist, 75(3), 479â490. Portico.

Authors 1

M. C. DREW (first)

References 16 Referenced 719

10.1111/j.1438-8677.1956.tb00541.x
10.1002/jsfa.2740050907
10.1093/oxfordjournals.aob.a084309
Drew M. C.&Goss M. J.(1974).Environmental stress and the growth of barley root systems: the effect of nutrient ion concentration and mechanical impedance. in:Mechanisms of Regulation of Plant growth. Bulletin Royal Soc. New Zealand. No. 12 111.
10.1093/jxb/24.6.1189
10.1093/jxb/26.1.79
10.2134/agronj1958.00021962005000100012x
10.1071/BI9721169
10.1139/b72-296
10.2134/agronj1958.00021962005000020013x
10.1007/BF01373498
{'key': 'e_1_2_1_13_1', 'volume-title': 'Soil Conditions and Plant Growth.', 'author': 'Russell E. W.', 'year': '1961'} / Soil Conditions and Plant Growth. by Russell E. W. (1961)
10.2136/sssaj1974.03615995003800020034x
{'key': 'e_1_2_1_15_1', 'volume-title': 'Plant Ecology.', 'author': 'Weaver J. E.', 'year': '1938'} / Plant Ecology. by Weaver J. E. (1938)
10.1111/j.1438-8677.1958.tb00613.x
{'key': 'e_1_2_1_17_1', 'first-page': '234', 'article-title': 'Fertilizer nutrient uptake as related to root development in the fertilizer band: influence of nitrogen and phosphorus fertilizer oil endogenous auxin content of soybean roots', 'volume': '3', 'author': 'Wilkinson S. R.', 'year': '1961', 'journal-title': '7th Int. Cong. Soil Sci.'} / 7th Int. Cong. Soil Sci. / Fertilizer nutrient uptake as related to root development in the fertilizer band: influence of nitrogen and phosphorus fertilizer oil endogenous auxin content of soybean roots by Wilkinson S. R. (1961)

Dates

Type	When
Created	19 years, 3 months ago (May 2, 2006, 6:24 p.m.)
Deposited	1 year, 10 months ago (Oct. 8, 2023, 8:25 a.m.)
Indexed	2 days, 17 hours ago (Aug. 23, 2025, 1:02 a.m.)
Issued	49 years, 9 months ago (Nov. 1, 1975)
Published	49 years, 9 months ago (Nov. 1, 1975)
Published Online	19 years, 3 months ago (May 2, 2006)
Published Print	49 years, 9 months ago (Nov. 1, 1975)

Funders 0

None

BibTeX

@article{DREW_1975, title={COMPARISON OF THE EFFECTS OF A LOCALISED SUPPLY OF PHOSPHATE, NITRATE, AMMONIUM AND POTASSIUM ON THE GROWTH OF THE SEMINAL ROOT SYSTEM, AND THE SHOOT, IN BARLEY}, volume={75}, ISSN={1469-8137}, url={http://dx.doi.org/10.1111/j.1469-8137.1975.tb01409.x}, DOI={10.1111/j.1469-8137.1975.tb01409.x}, number={3}, journal={New Phytologist}, publisher={Wiley}, author={DREW, M. C.}, year={1975}, month=nov, pages={479–490} }

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