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Sulphur is required by the plants in amounts similar to phosphorus
(P) and is important in protein formation and other plant
functions. It significantly influences yield and quality of crops,
improves odor and flavors, and imparts resistance to cold, and
hence it is generally considered as a 'quality nutrient'.
Sulphur-deficient soils are widely distributed around the world. In
the event of inadequate level of sulphur in soil, response of crops
to other nutrients also declines. In addition, the imbalanced use
of nitrogen and phosphorus in comparison to S, has widened, the N:
S and P: S ratios in soil. Resultantly, the yield of oilseed crops,
especially sunflower, is severely affected. Considering this
aspect, a comprehensive case study was conducted to evaluate the
response of sunflower to different sources and levels of sulphur in
semi- arid Alfisol soils. The experiences documented in this book
will be highly useful to Agricultural Scientists, Students, Land
managers, NGOs, State Agricultural Departments, Agricultural
Extension and Transfer of Technology Agencies, not only in India
but also in other countries of the world with similar climatic and
edaphic environments.
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