Nursery experiments were conducted to determine the cause for the chronic problem of chlorosis in paddy seedlings raised ongoradu soil nurseries of Anand area of Kheda district of Gujarat State and to find out remedial measures for it. The findings are (i) the chlorosis is due to high bicarbonate content of the soil (ii) application of ferrous sulphate to soil at 40 kg Fe/ha increased the survival period of the seedling but did not quite control the chlorosis (iii) spray of 0.4% ferrous sulphate solution twice a week was helpful in partial recovery of the seedlings from chlorosis (iv) acidulation of soil with sulphuric acid about ten days prior to sowing produced very healthy, vigorous and green seedlings of paddy which did not show any signs of chlorosis at all and (v) total and IN HCl-soluble iron content of the shoots did not at all reflect the degree of chlorosis of the paddy seedlings. These results are discussed in the light of current theories of absorption and translocation of iron in plant system and the iron-chlorosis of paddy seedlings ingoradu soils is attributed to both soil and plant factors.
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Patel, G.J., Ramakrishnayya, B.V. & Patel, B.K. Effect of soil and foliar application of ferrous sulphate and of acidulation of soil on iron chlorosis of paddy seedlings ingoradu soil nurseries in India. Plant Soil 46, 209–219 (1977). https://doi.org/10.1007/BF00693127
- Iron Content
- Sulphuric Acid
- Plant System
- Current Theory