Download Boron in Soils and Plants: Proceedings of the International by Sultana Ahmed, M. B. Hossain (auth.), R. W. Bell, B. PDF

By Sultana Ahmed, M. B. Hossain (auth.), R. W. Bell, B. Rerkasem (eds.)

The fiscal importance of boron (B) in agriculture, horticulture, and forestry has been past dispute for a number of a long time. Even within the final twenty years, the components the place B deficiency limits plant creation has grown with elevated experiences from China, south Asia and southeast Asia. the current quantity is reflective of the starting to be wisdom of the importance of low soil B with studies from Australia, Bangladesh, Brazil, north, relevant and southern China, India, Nepal, and the North West Frontier Province of Pakistan contained herein. Boron deficiency additionally is still an issue for crop yield and caliber in components the place B deficiency has been recognized for it slow, for instance in Germany and the us. the matter of low soil B isn't really restricted to results on box crop yield, with papers reporting on depressed wooden yield and caliber in trees timber (Lambert et al. ), and depressed fruit caliber (Dong et al. ; Smith et al. : Zude et al. ) additionally showing within the current quantity. Globally, Shorrocks (1997)1 estimates that ?? tonnes of B fertiliser is utilized every year in agriculture. the industrial advantages from using B fertiliser haven't been quantified yet are sincerely huge, immense. sarcastically, the transparent fiscal imperatives for utilizing B fertiliser on low B soils usually are not matched via an identical readability of knowing of the function and features of B in plants.

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Extra info for Boron in Soils and Plants: Proceedings of the International Symposium on Boron in Soils and Plants held at Chiang Mai, Thailand, 7–11 September, 1997

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Coutinho' Department of Soils and Fertilizers, College of Agronomy, laboticahal, and 2 Department of Agriculture, College of Agronomy, Botucatu, Sao Paulo State University, CP 237,18603-970 Botucatu SP, Brazil I Key words: aluminum, base saturation, boron, nutrition, pH Abstract In Sao Paulo state, Brazil, liming has often caused boron (B) deficiency in sunflowers (Helianthus annuus). An experiment was conducted in pots to study the effects of liming on soil and added B, as well as its consequences for plant growth and nutrition.

4 kg ha -I, respectively. The relative yield in B treated plots (called FTE plots) was always higher than that in those without the applied B (called original plots). Symptoms of deficiencies in B appeared in original plots after 2-4 years cultivation of crops, and worsened year after year. On the other hand, toxicity symptoms due to excess of B never appeared in any crops in FTE plots; rather, those crops showed healthy growth throughout the 15 years. Similarly the B concentration in crops in FTE plots always remained in the adequate range.

J. Soil Res. 25, 377-390. Cruz M C P and Ferreira M E 1984 Selection of methods for the determination of boron availability in soils. Pesq. Agropec. Bras. 19, 1457-1464. Fay C D Orellana R G, Schwartz J Wand Fleming A L 1974 Responses of sunflower genotypes to aluminum in acid soil and nutrient solution. Agron. J. 66, 293-296. Impre K and Eulalia V J988 Fertilization and liming of sunflower on acidic sandy soil. Noventermeles 37, 541-547. Mezuman U and Keren R 1981 Boron adsorption by soils using a phenomenological adsorption equation.

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