Which of the following pairs is not correctly matched in the term of Vegetable and Seed rate(kg/ha)?

Seed rate is defined as the amount of seed required for a unit area of land to grow any crop successfully. In other words, the amount of seed required to raise a crop successfully on a given land is called a seed rate for that crop of the land.
The seed rate of cucumber is 4 - 5 kg/ ha.
The seed rate of bottle gourd is 6 - 8 kg/ ha.
The seed rate of bitter gourd is 4 - 6 kg/ha.
The seed rate of sponge gourd is 3 - 4 kg/ha. It is not 8 - 10 kg/ha. Thus it is not correctly paired.