Give one word for the following :

Give one word for the following :

(a) Farming without the use of chemicals as fertilizers, herbicides and pesticides is known as ……….. .

(b) Growing of Wheat and Groundnut on the same field is called ………… .

(c) Planting of Soyabean and Maize in alternate rows in the same field is called as ………… .

(d) Growing different crops on a piece of land in pre-planned succession is known as ………….. .

(e) Xanthium and Parthenium are commonly known as …………. .

(f) Causal organism of any disease is called as …………. .