Abstract
In Southern Africa, premature germination of maize (Zea mays L.) grain in standing crops is a sporadic phenomenon, which may result in serious crop losses. Uncertainty persists regarding the primary causal mechanism. This paper discusses findings obtained over two seasons in soil acidity studies on a Natal Oxisol. Premature germination was related to soil and plant chemical properties. No pre-germination was observed during the 1985/86 season, but a high incidence was recorded in the much wetter 1986/87 season. Soil and leaf chemical properties were similar in both seasons and lime markedly increased Mo uptake and NO3 reduction. In the second season, strong relationships between pre-germination and plant Mo and NO3 content were evident, but none of the other plant chemical parameters measured appeared to have played a role. It is concluded that Mo deficiency, correctable by liming, but not by seed treatment, was a primary causal factor, that elevation of pH beyond the point where Al toxicity is eliminated may be required to completely overcome the problem and that the condition is triggered by poorly defined enviromental conditions.
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References
Adams F 1984 Crop response to lime in the southern United States. In Soil Acidity and Liming (2nd Edition). Ed. F Adams. pp 211–265. Agronomy 12, Am. Soc. Agron. Madison, WI.
Blarney F P C 1972 Seedling response of maize (Zea Mays L.) cultivars to seed-applied sodium molybdate. Crop Prod. 1, 43–46.
Brown J C and Clark R B 1974 Differential response of two maize inbreds to molybdenum stress. Soil Sci. Soc. Am. Proc. 38, 331–333.
Clark R B 1984 Physiological aspects of calcium, magnesium, and molybdenum deficiencies in plants. In Soil Acidity and Liming (2nd Edition). Ed. F Adams. pp 99–170. Agronomy 12, Am. Soc. Agron. Madison, Wl.
Farwell A J 1984 Seedling molybdenum deficiencies in maize. Proc. Sixth South African Maize Breeders Symp., Pietermaritzburg, 20–21 March. pp. 76-81.
Johnson C M and Ulrich A 1959 II. Analytical methods for use in plant analysis. Calif. Agr. Exp. Sta. Bull. 766, pp 26–78.
Marquez Ortiz J de J and Ortiz Cerecéres J 1984 Premature germination in maize, Zea mays L., in the central zone of Puebla. Revista Chapingo 9, 79–86.
Mendes P, Farina M P W, Channon P and Smith M 1985 A field evaluation of the differential tolerance to soil acidity of forty-eight South African maize cultivars. S. Afr. J. Plant Soil 2, 215–220.
Mengel K and Kirkby E A 1982 Principles of Plant Nutrition. (3rd Edition). Int. Potash Inst., Bern, Switzerland. 655 p.
Rouchenko W and Soyer J-P 1971 On the causes of premature germination in immature grains of maize: Preliminary results. Ann. agron. 22, 241–255.
Rouchenko W and Soyer J-P 1972 Causes of the germination of immature maize grains on the plant: Additional results. Ann. agron. 23, 445–459.
Shainberg I, Sumner M E, Miller W P, Farina M P W, Pavan M A and Fey M V 1989 Use of gypsum on soils: A review. Adv. Soil Sci. 9, 1–111.
Tanner P D and Grant P M 1977 Response of maize (Zea mays L.) to lime and molybdenum on acid red and yellow-brown clays and clay loams. Rhod. J Agric. Res. 15, 143–149.
Tanner P D 1978 A relationship between premature sprouting on the cob and the molybdenum and nitrogen status of maize grain. Plant and Soil 49, 427–432.
Willis R B and Gentry C E 1987 Automated method for determining nitrate and nitrite in water and soil extracts. Comm. Soil Sci. Plant Anal. 18, 625–636.
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© 1991 Springer Science+Business Media Dordrecht
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Farwell, A.J., Farina, M.P.W., Channon, P. (1991). Soil acidity effects on premature germination in immature maize grain. In: Wright, R.J., Baligar, V.C., Murrmann, R.P. (eds) Plant-Soil Interactions at Low pH. Developments in Plant and Soil Sciences, vol 45. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3438-5_41
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DOI: https://doi.org/10.1007/978-94-011-3438-5_41
Publisher Name: Springer, Dordrecht
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