Crop

Critical growth stages

Average crop duration (days)

Water requirement (mm)

Rice

Tiller initiation, flowering and milky stage

90-130

900-2500

Wheat

Crown root initiation, flowering, joining, milky and tillering

135

400-450

Pulses

Flower initiation and pod filling

90-120

250-300

Groundnut

Pegging and pod formation

105

600-450

Sugarcane

Emergence, tiller formation and elongation

330

1400-3000

Banana

Early vegetative phase, bunch initiation and flowering

300

3000

Cassava

Rooting, early tuberization and tuber development

300

400-750

Maize

Silking and cob development

100

400-600

Sorghum

Knee-height stage, flowering and grain filling

100-120

250-300

Cotton

Commencement of sympodial branching, flowering, boil formation and boil bursting

165

600-700

Source: http://www.keralaagriculture.gov.in/