Abstract
A field trial was conducted to study the response of sunflower (Helianthus annuus L.) to different phosphorus levels (16, 24 or 32 kg P ha−1) and inoculation with vesicular-arbuscular mycorrhizal fungus, Glomus fasciculatum on vertisol during summer 1993. At the vegetative stage of sunflower, percent mycorrhizal root colonization, spore count, dry biomass and P uptake did not differ significantly between inoculated and uninoculated control plants. However, at later stages (flowering and maturity) percent root colonization, spore count, total dry biomass and total P uptake were significantly higher in inoculated plants than in uninoculated control plants. The total dry biomass, P content and seed yield increased with increasing P level in uninoculated plants, whereas no significant difference was observed between 16 and 32 kg P ha−1 in inoculated plants. The positive effect of mycorrhizal inoculation decreased with increasing P level above 16 kg P ha−1, due to decreased percent root colonization and spore count at higher P levels.
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References
Bagyaraj D J and Manjunath A 1980 New Phytol. 85, 33–36.
Black R L B and Tinker P B 1977 Nature 267, 510–511.
Bolan N S 1991 Plant and Soil 134, 189–207.
Cabello M N 1987 Resista de la Facutad de Agronomia, Universidad Nacional de la Plata 63, 46–52.
Champavat R S 1990 Indian J. Agric. Sci. 60, 425–427.
Gerdemann J W and Nicolson T H 1983 Trans. Br. Mycol. Soc. 46, 235–244.
Hayman D S 1970 Trans. Br. Mycol. Soc. 54, 53–63.
Hayman D S et al. 1975 Plant and Soil 43, 489–495.
Jackson M L 1967 Soil Chemical Analysis. Prentice Hall of India Ltd., New Delhi, India.
Jones N P and Sreenivasa M N 1993 J. Oilseeds Res. 10, 86–92.
Koide R 1985 J. Exp. Bot. 36, 1087–1098.
Krishna K R et al. 1982 Indian J. Microbiol. 22, 206–208.
Kucey R M N and Paul E A 1983 Can. J. Soil Sci. 63, 82–95.
Mosse B and Hayman D S 1971 New Phytol. 70, 29–39.
Nelsen C E et al. 1981. J. Am. Soc. Hort. Sci. 106, 786–788.
Phillips J M and Hayman D S 1970 Trans. Br. Mycol. Soc. 55, 158–167.
Ratnayake M L T et al. 1978 New Phytol. 81, 543–552.
Sreenivasa M N and Bagyaraj D J 1988 Plant and Soil 106, 289–290.
Thomson J P 1987 Aust. J. Agric. Res. 38, 847–867.
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Chandrashekara, C.P., Patil, V.C. & Sreenivasa, M.N. VA-mycorrhiza mediated P effect on growth and yield of sunflower (Helianthus annuus L.) at different P levels. Plant Soil 176, 325–328 (1995). https://doi.org/10.1007/BF00011797
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DOI: https://doi.org/10.1007/BF00011797