Helpful for Agronomy/Soil science students

1. PPT BY:
BHANURICKY

2. INTEGRATED NUTRIENT
MANAGEMENT AND
BALENCED FERTILIZATION
Prepared by
Bhanuprakash N
Praveen B R
CCSHAU,Hisar
Deptt. of Agronomy

42. CROP RESIDUE

59. BALANCED FERTILIZATION
 Balanced Fertilisation = f (Soil type, Crop/cropping system,
Inputs, Residual effects, Available soil nutrients, Yield
target, Economics of fertiliser use)
 Balanced application of nitrogen, phosphorus, potassium,
along with secondary and micro-elements can guarantee a
balanced supply of all the essential nutrients for normal
growth.
 This technique can avoid inefficiency of fertilizer due to
imbalanced nutrients.
 The key point of this technique is to control the proportion
of different nutrients, and the balance between the crops
demand and the amount of fertilizer applied at all stages of
growth.

60. 4Rs CONCEPT
• Right nutrient
• Right quantity
• Right method and
• Right time.

61. CONCEPT
• The term "balanced fertilization" was first introduced
by Justin von Liebig in 1840,who stated that farmers
have to add those nutrients to the soil that have been
removed by harvested crops, to be able to sustain high
crop yields (Russell, 1912).
• Soon thereafter, this simple concept was rejected
when it became clear that the soil is a large reserve of
plant available nutrients.
• Hence, most of the current fertilizer recommendations,
developed during the second half of the 20th century,
consider both soil reserves and crop needs;
recommended fertilizer applications depend on the
amounts of plant available nutrients in the soil and
crop demand.

62. Balanced fertilization can be aimed:
• To ensure increased crop yields.
• To improve cost:benefit relationship.
• To improve quality of crops.
• To correct soil nutrient deficiency.
• To maintain or improve soil fertility.
• To avoid or check
environmental/soil/underground water pollution.
• To restore soil fertility impaired through
imbalanced fertilizer use.

63. The widely advocated guidelines for balanced
fertilizer use may consist of the following Practices
• Fertilizer application on soil test basis.
• Cultivation of high yielding varieties of crops.
• Correlation of all nutrient deficiencies.
• Integrated fertilizer – water management.
• Adoption of best fertilizer management practices following 4R’s
concept.
• Split application of N to match the soil type and duration of the crops.
• Treatment of urea with neem seed cake or its extract or using coating
agent like sulphur, gypsum etc.
• Drilling/placement of soluble P fertilizers.
• Split application of K in coarse textured soils under high rainfall.
• Dipping of rice seedling roots/potato seed tubes in slurries of P
and/or zinc fertilizer before planting.