Soil Science - Sameti.org

Soil Science
Zinc (Zn)
Iron (Fe)
Coarse textured soils, low in organic
matter, alkaline soils, eroded soil, cold and
wet fields.
Coarse textured soils low in organic matter,
calcareous soils, alkaline soils, eroded and
poorly drained soils, flooded rice fields
being an exception and cold weather.
Rice (low lands), potato, tomato, cotton,
maize, beans, soyabean, green gram,
black gram, onion, flax, grapes and citrus
fruits.
Maize, groundnut, vegetables, soyabean,
sorghum, field beans, flax, citrus fruits,
berries, grapes and fruit trees.
Chlorine (Cl) Sandy soils and sites away from the sea. Potato, tabocco, beans, grapes, coconut
and citrus fruits.
Table 2.5. List of materials containing micronutrients and range of micronutrient concentration
required for normal plant growth.
Micronutrient Material used Formula Nutrient content
Concentration in ppm
(part per million)
Iron Ferrous Sulphate FeSo 4
, 7H 2
O 20% Fe 0.5-5.0
Copper Copper Sulphate CuSo 4
,5H 2
O 24% Cu 0.01-0.05
Zinc Zinc Sulphate ZnSO 4
,7H 2
O 21% Zn 0.02-0.2
Manganese Manganese Sulphate MnSO 4
,7H 2
O 30.3% Mn 0.1-0.5
Boron Borax or Sodium borate Na 2
B4O 7
, 10H 2
O 10.6% B 0.1-1.0
Molybdenum Ammonium molybdate (NH 4
) 6
Mo 7
O 24
,
4H 2
O
54% Mo 0.01-0.05
Table 2.6. Amount of micronutrients that can be applied to crops
Micronutrient
Material commonly used
Amounts of application (Kg/ha)
Soil
Spray
Iron (Fe) Ferrous Sulphate 16.8-56.0 5.6-7.8
Copper (Cu) Copper Sulphate 2.3-56.0 0.56
Zinc (Zn) Zinc Sulphate 5.6-56.0 2.3-22.4
Manganese (Mn) Manganese Sulphate 16.8-33.6 4.5-9.0
Boron (B) Borax or Sodium borate 5.6-23.6
Molybdenum (Mo) Sodium or ammonium molybdate 0.7-2.3 0.028-0.035
28 Reading Materials for Village Level Workers