Partial preview of the text
Download Science class 8th (Ncert) and more Study notes Earth science in PDF only on Docsity!
y | Netés—-™"*— a Crop production and ~ management * CROPS Plants of the same kind grown and cultivated at one place on a large scale are called crop. : wheat crop, rice | Kharif Crops e Grown in rainy season (Giune-October). ® Need more water and warm climate. EXAMPLE Rice, maize, cotton, groundnut, soybean. | y | Netés—~™"*— a Agricultural Practices” Farmers perform several steps to grow crops. These steps are called agricultural practices. ) Netes- Date: —_— (1) Preparation of Soil wy, e Soil is ploughed and loosened before sowing. ° Helps roots grow easily and improves air circulation. Tools used: Plough, hoe, cultivator. y | Netés—~™"*— eee (3) Adding Manure y, and Fertilisers * Manure e Natural substance obtained from plant and animal waste. — @ improves soil fertility. y Netés ——” * Fertilisers y e Chemical substances that provide nutrients to plants. EXAMPLE sulphate. » Urea,ammonium == .__.. FF, rm , i ; F a | Date: Neies . a Modern methods of wy irrigation: * Sprinkler system In this method water is sprayed over the crops like rainfall. * Drip irrigation A method of irrigation in which water is supplied drop by drop directly to the roots of plants through ys ’ | Netés—°"—— a (5) Protection from y Weeds Weeds are unwanted plants that grow with crops. Method of removing weeds e Hand pulling e Hoe e Weedicides 4 Date: Notes ~ a” (7) Storage wy, Grains must be properly stored to protect them from: e Moisture e Insects e Rats e Fung! Storage places: e Granaries e Silos e Warehouses ,... : y Netés—~™"*— a Animal Husbandry ~ The rearing and caring of animals for food and other products Is called animal husbandry. Examples: ® Dairy farming e Poultry farming e Fisheries ° Beekeeping