Brinjal being a long duration crop, requires a good amount of manures
and fertilizers for high yield.
The nutrient requirement for varieties is 100:50:50 kg NPK/ha and
for hybrids it is 200:75:75 kg NPK/ha.
Basal dressing
Fifty per cent of the N is applied along with full dose of P and K
as basal dressing just before planting as noted below.
50 kg of Nitrogen (110 kg of Urea)/ha.
50 kg of Phosphorus (313 kg of Super Phosphate)/ha.
50 kg of Potash (80 kg of Muriate of Potash)/ha.
Top dressing
Thirty days after transplanting, the remaining 50% nitrogen (N) is
applied in the form of urea 110 kg, as a band application 5-10 cm away
from the plants and mixed with the soil.
Immediately, the plants are earthed up and irrigated.
Different sources of inorganic fertilizers are indicated in Table.
NPK at 300:50:90 Kg/ha and 75x 60cm spacing is found optimum for PLR
1 Brinjal.
Annamalai Brinjal responding well for ratooning with yield potential
of 63% of the main crop with in 100-110 days and with a fertilizer dose
of 75:25:30Kg. NPK/ha plus Azospirillum and phosphobacteria each 2Kg/ha.
Application Methods
Fertilizers are applied in several ways.
Basal dressings are those fertilizers which are incorporated
in the soil just before sowing or planting.
In general half the dosage of N, full dosage of P2O5
and full dosage of K2O are applied as basal dressing in most crops.
Top dressing are fertilizers added to the soil surface
but not incorporated
Such fertilizers must be soluble and not fixed by soil
because the nutrient is carried to the roots by soil water.
Foliar feeding is the spraying of a liquid fertilizers
in suitably diluted form to be taken up through leaves.
This technique is usually restricted to the application
of micronutrients.
Major nutrients are also supplied through foliar feeding, if deficiencies
noted in the field.
Nutrient Management
