Minimum proposed distance of isolation between cross

Minimum proposed distance of isolation between cross-pollinated and self-pollinated plants

Species	Type of pollination	Mean of pollination	Minimum proposed distance in metres (m)
Watermelon	Cross-pollination	Insects	1.000
Melon	Cross-pollination	Insects	1.000
Cucumber	Cross-pollination	Insects	1.000
Pumpkin	Cross-pollination	Insects	1.000
Zucchini	Cross-pollination	Insects	1.000
Cabbage	Cross-pollination	Insects	1.000
Radish	Cross-pollination	Insects	600
Beans	Self-pollination	---	100
Peas	Self-pollination	---	100
Broad Beans	Cross-pollination	Insects	1.000
Pepper	Cross-pollination	Insects	500
Tomato	Self-pollination	---	50
Egg-plant	Cross-pollination	Insects	1.000
Greater quaking grass	Cross-pollination	Wind-pollinated	1.000
Onion	Cross-pollination	Insect	600
Beetroot	Cross-pollination	Wind-pollinated	2.000*
Chicory	Self-pollination	---	600
Carrot**	Cross-pollination	Insect	1.000
Lettuce	Self-pollination	---	100
Spinach	Cross-pollination	Wind-pollinated	2.000
Okra	Cross-pollination	Insect	500
Corn	Cross-pollination	Wind-pollinated	1.000

* The shortest isolation distance has to be kept between all the subspecies from the species Β: Vulgaris like the sugar-beet and the beet-roots.

**Carrot can be cross-pollinated with wild carrot. So ensure that there are no wild carrots near.

Source: F.A.O (WORLD ORGANISATION OF FOOD AND AGRICULTURE)