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RESEARCH ARTICLE
Contents Vol 58(7)

Increasing applications of potassium fertiliser to barley crops grown on deficient sandy soils increased grain yields while decreasing some foliar diseases

R. F. Brennan A B and K. W. Jayasena A
+ Author Affiliations
- Author Affiliations

A Department of Agriculture and Food, 444 Albany Hwy, Albany, WA 6330, Australia.

B Corresponding author. Email: rbrennan@agric.wa.gov.au

Australian Journal of Agricultural Research 58(7) 680-689 https://doi.org/10.1071/AR06286
Submitted: 26 August 2006  Accepted: 16 April 2007   Published: 26 July 2007

Abstract

Most sandy soils used for cropping in south-western Australia (SWA) have now become potassium (K) deficient due to removal of K in hay and grain, so it is now profitable to apply K fertiliser to most barley (Hordeum vulgare L.) crops in the region. Leaf diseases of barley crops in the region have increased in recent years particularly in the in medium to high (350–600 mm annual average rainfall) areas of SWA. Seventeen field experiments were undertaken to determine the effect of applications of K fertiliser, either the chloride (KCl) or sulfate source (K2SO4), on grain yield increases and on the percentage leaf area diseased (%LAD) when diseases were controlled or not controlled by fungicide sprays.

Maximum grain yield of barley was achieved where adequate K fertiliser (~8–22 kg K/ha) was applied and leaf diseases were controlled by fungicide. Applying increasing amounts of applied K fertiliser (0–120 kg K/ha) to barley decreased the %LAD by powdery mildew (Blumeria graminis f. sp. hordei Syn.) and spot-type net blotch (Pyrenophora teres f. maculata (Sacc.) Shoem.) and increased grain yield. By contrast, when leaf rust (Puccinia hordei G. Otth) was present the %LAD was unaffected by K application. When powdery mildew was the major disease, larger increases in grain yields and larger reductions in %LAD were obtained when KCl was used instead of K2SO4. About twice as much K fertiliser as K2SO4 was required for 90% maximum grain yield compared with KCl where powdery mildew was present. Applying larger amounts (>40 kg K/ha) of K fertiliser than required to achieve maximum grain yields did not further reduce %LAD by powdery mildew. There were no significant differences between the 2 sources of K fertiliser on the %LAD by spot-type net blotch.

Generally, the percentage protein content and hectolitre weight of grain were unaffected by K fertiliser. Potassium fertiliser decreased the percentage grain < 2.5 mm (known locally as screenings) and control of the foliar leaf diseases by applications of fungicide resulted in a decrease in protein content and screenings and increased hectolitre weight of barley grain.

The concentration of K in dried shoots that was related to 90% of the maximum shoot yield (critical diagnostic K) decreased as the plant matured, and was ~41 g/kg at Z22, ~30 g/kg at Z32, ~20 g/kg at Z40, and ~15 g/kg at Z59. The concentration of K in dried shoots which was related to 90% of the grain yield (critical prognostic K) decreased as plant matured, and was similar to critical diagnostic K values. Leaf disease had little effect on critical concentrations of K at early growth stages (Z22 and Z32).

Additional keywords: grain protein, hectolitre weight, leaf rust, powdery mildew, spot-type net blotch.


Acknowledgments

Funds were provided by the Government of Western Australian, the Grains Research and Development Corporation (DAW710), and Canpotex. Chemical analyses of soil and plant samples were done by the Chemistry Centre (WA). Technical assistance was provided by Messrs F. M. O’Donnell, T. D. Hilder, G. Poulish and R. J. Lunt. Dr M. D. A. Bolland made helpful comments on early drafts of this paper. Mr A. van Burgel provided advice for analysis of the data.


References


Anon. (1977) ‘Technicon industrial method 334–74W/B+.’ (Technicon Industrial Systems: Tarrytown, NY)

Arafa MA (1987) Potassium fertilization for barley and its effects on rust reaction, grain yield and some agronomic characters. Agricultural Research Review 63, 45–51. open url image1

Brennan RF, Bolland MDA, Bowden JW (2004) Potassium deficiency and molybdenum deficiency and aluminium toxicity due to soil acidification, have become problems for cropping sandy soils in south-western Australia. Australian Journal of Experimental Agriculture 44, 1031–1039.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Colwell JD, Esdaile RJ (1968) The calibration, interpretation, and evaluation of tests for the phosphorus fertiliser requirements of wheat in northern New South Wales. Australian Journal of Soil Research 6, 105–120.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Cramb J (2000) Climate in relation to agriculture in south-western Australia. In ‘The wheat book, principle and practice, bulletin 4443’. (Eds WK Anderson, JR Garlinge) pp. 5–10. (Agriculture Western Australia: Sth Perth)

Dimmock JPRE, Gooding MJ (2002) The influence of foliar diseases, and their control by fungicides, on the protein concentration in wheat: a review.  Journal of Agricultural Science 138, 349–366.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Edwards NK (1998) Potassium. In ‘Soilguide: a handbook for understanding and managing agricultural soils bulletin 4343’. (Ed. G Moore) pp. 176–180. (Agriculture Western Australia: Sth Perth)

Fixen PE, Buchenau GW, Geldman RH, Schumacher TE, Gerwing J, Cholick FA, Faber BG (1986b) Influence of soil chloride and applied chloride on several wheat parameters. Agronomy Journal 78, 736–740. open url image1

Fixen PE, Geldman RH, Gerwing J, Cholick FA (1986a) Response of spring wheat, barley, and oats to chloride in potassium chloride fertilisers. Agronomy Journal 78, 664–668. open url image1

Forster H, Mengel K (1974) Effects of potassium nutrition on the yield structure of different spring wheat varieties (Triticum aestivum L.). Zeitschrift fur Acker und Planzenbau 139, 146–156. open url image1

GenStat (2005) ‘GenStat for Windows.’ 8th edn, Lawes Agricultural Trust, Rothamsted. (VSN International: Oxford, UK)

Hampton JG , Arnst BJ (1978) The relationship between net blotch and yield loss in spring barley. In ‘Epidemiology and crop loss assessment. Proceeding of a Workshop at Lincoln College’. (Eds RC Close, IC Harvey, Sanderson FR, Gaunt RE, AJ McCulley, PS Teng) pp. 18.1–18.4. (Lincoln College: Canterbury, New Zealand)

Jarvis RJ (2000) Tillage – A brief history. In ‘The Wheat book, principle and practice, bulletin 4443’. (Eds WK Anderson, JR Garlinge) pp. 177–184. (Agriculture Western Australia: Sth Perth)

Jayasena KW, Loughman R, Majewski J (2002) Evaluation of fungicide in control of spot-type net blotch on barley. Crop Protection 21, 63–69.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Khan TN (1982) Occurrence and pathogenicity of Drechslera teres isolates causing spot-type symptoms on barley in Western Australia. Plant Disease 66, 423–425. open url image1

Khan TN (1989) Effect of spot-type net blotch (Deschslera teres (Sacc.) Shoem) infection on barley yield in short season environment of northern cereal belt of Western Australia. Australian Journal of Agricultural Research 40, 745–752.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Kiraly Z (1976) Plant disease resistance as influenced by biochemical effects of nutrient in fertilisers. In ‘Proceeding of 12th Colloquium of International Potash Institute’. pp. 33–46. (International Potash Institute: Bern, Switzerland)

Leath KT , Ratcliffe RH (1974) The effect of fertilization on disease and insect resistance. In ‘Forage fertilization’. (Ed. DA Mays) pp. 481–503. (American Society of Agronomy: Madison, WI)

Littlewood N (2003) ‘Crop variety sowing guide for Western Australia 2004, bulletin 4592.’ (Department of Agriculture, Sth Perth)

Marschner H (2003) ‘Mineral nutrition of higher plants.’ 2nd edn, 6th printing. (Academic Press: Amsterdam, The Netherlands)

McArthur WM (1991) ‘Reference soils of south-western Australia.’ (Australian Society of Soil Science, WA Branch Inc.: Perth)

Mengel K (1974) The effect of potassium on the quality of plant products. Journal of Fertiliser Society of South Africa 1, 15–22. open url image1

Mengel K, Forster H (1968) Der einfluss einer zeitlich variierten, unterbrochenen K-ernahrung auf ertragsund qualitatsmerkmale von gerste. Zietschrift Acker und Pflanzenbau 127, 317–326. open url image1

Perrenoud S (1990) Potassium and plant health. In ‘Research topics, No. 3’. pp. 1–118. (International Potash Institute: Basel, Switzerland)

Smith FW , Loneragan JF (1997) Interpretation of plant analysis: concepts and principles. In ‘Plant analysis: an interpretation manual’. (Eds DJ Reuter, JB Robinson) pp. 3–33. (CSIRO Publishing: Melbourne, Vic.)

Trolldenier G (1982) Interaction between powdery mildew infection, potassium nutrition and fungicide application on the yield of two spring barley cultivars. Phytopathologische Zeitschrift 104, 337–344. open url image1

Ulrich A (1952) Physiological basis for assessing the nutritional requirements of plants. Annual Review of Plant Physiology 3, 207–228.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Wallwork H , Loughman R , Khan TN (1995) Biology and control of Drechslera diseases of barley in Australia. In ‘Helminthosporia: metabolites, biology, plant diseases. Bipolaris, Drechslera, Exserohilum’. (Ed. J Chelkowski) pp. 139–160. (Institute of Plant Genetics, Polish Academy of Sciences: Poznan, Poland)

Wong MTF, Edwards NK, Barrow NJ (2000) Accessibility of subsoil potassium to wheat grown on duplex soils in the south-west of Western Australia. Australian Journal of Soil Research 38, 745–751.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Yuen SH, Pollard AG (1954) Determination of nitrogen in agricultural materials by the Nessler reagent. II. Micro-determinations in plant tissue and in soil extracts. Journal of the Science of Food and Agriculture 5, 364–369.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Zadoks JC, Chang TT, Konzak CF (1974) A decimal code for the growth stages of cereals. Weed Research 14, 415–421.
| Crossref | GoogleScholarGoogle Scholar | open url image1