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Birsa Agricultural University, Ranchi

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19871
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End date: 2007 × Thesis Type: M.F.Sc ×
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    ThesisItemOpen Access
    THE EFFECT OF LONG TERM MANURING AND FERTILJIZATION OF CROP YIELD AND FERTILITY LEVEL OF TYPIC HAPLUSTALF SOIL
    (Birsa Agricultural University, 1987) LAL, SURESH; MATHUR, B.S.
    1. Continuous application of chemical fertilizers either singly or in combination had detrimental effect on the productivity of an acid soil. They developed unbalanced cationic and anionic environment in soil and hence affected the soil fertility. 2.Cumulative effect of organic manure (FYM) showed marked improvement in soil fertility by maintaining physical and chemical properties of soils. Even half dose of FYM in conjunction with inorganic fertilizers maintained the yield to a fairly high level. 3. Lime application as per lime requirement along with balanced dose of NPK had proved the superiority over the rest of the treatments in maintaining soil fertility and productivity. But due to high removal of nutrients it might be expected that some micronutrients might become limiting factor for normal crop production in the long run.. In view of the above findings it is recommended that use of chemical fertilizers alone should be avoided in acid soil of Chotanagpur. Application of lime as per lime requirement along with fertilizers is essential in such soils and use of organic manure over and above inorganic fertilizers is equally beneficial. Lastly, addition of micronutrients on soil test basis should also be kept in mind for maintaining the soil fertility and productivity.