Growth time (M)	Polybag-raised rubber seedlings		Feld-sown rubber seedlings
Growth time (M)	Extension unit	Leaf phenophase	Extension unit	Leaf phenophase
January	First	Elongating stage	First	Elongating stage
February	Second	Elongating stage	Second	Light green stage
March	Second	Light green stage	Second	Stationary stage
April	Second	Stationary stage	Second	Light green stage
May	Third	Stationary stage	Third	Light green stage
June	Fourth	Stationary stage	Fourth	Leaf-expansion
July	Fifth	Leaf-expansion stage	Fifth	Leaf-expansion stage
August	Sixth	Elongating stage	Sixth	Leaf-expansion
September	Seventh	Leaf-expansion	Seventh	Leaf-expansion
October	Eighth	Stationary stage	Eighth	Stationary stage
November	Ninth	Stationary stage	Ninth	Stationary stage
December	Ninth	Stationary stage	Ninth	Stationary stage