The problem has been getting the knowledge from an expert into machine understable form. For gathering the knowledge of agriculture domain, it is better to classify it into different subdomains such as Corps, Vegetables, Pulses, Oilseeds, Fruits,Flowers and Agricultural Enterprises. To start with , it is proposed that at least one crop in each sub area will be selected as listed in the table 1.

S.No.	Crops/AgriBusiness	Seasons
		Rabi	Kharif
1		Cereals	-	Paddy
2		Pulses	Pea	-
3	Oil seeds	Mustard	-
4	Vegetable	Tomato	-
5	Flowers	Gladiolus	-
6	Agribusiness	Mushroom	-
7		Post Harvest Technology Of Mango

Table: 1 Crops for the Expert System of Extension

The most suitable region found is Hot Semi-Arid Eco-region With Alluvium Derived Soil. The agro-ecoregion constitutes parts of Gujrat,Northern Plains and central high lands. It covers the area of 32.2 m ha, representing 9.8% of the total geographical area of the country. The table 2 shows the selected states and districts from the region.

S.No.	State	Districts	Crops
1	Punjab	Ludhiyana	Paddy, Mustard, Pea
2	Haryana	Karnal, Gurgaon, Hisar	Paddy,Mustard, Tomato
3	Delhi	Delhi	Gladious, Tomato, Mushroom,Pea
4	Rajashan	Bharatpur	Mustard
5	Gujrat	Anand	Mustard
6	M.P.	Datia	Mustard
7	U.P.	Kanpur, Lucknow, Varanasi	Tomato, Gladious, Mango, Pen, Tomato

Table: 2 Selected States & Districts for the expert system of extension

Map showing hot semi arid agro-ecoregion