This PSEB 8th Class Agriculture Notes Chapter 7 Crop Diversification will help you in revision during exams.
PSEB 8th Class Agriculture Notes Chapter 7 Crop Diversification
→ Crop diversification is also known as multiple cropping.
→ Crop diversification is to reduce some area under rice-wheat crops and to increase the area under alternate crops like maize, pulses, oilseeds, sugarcane, potato, etc.
→ Crop diversification helps in natural resource sustainability.
→ Maincrop rotation in Punjab is wheat-rice.
→ There is a consumption of 215 cm water for the wheat-rice cycle in Punjab in a year, but 80% of this water is consumed by rice alone.
→ Punjab is divided into three agroclimatic zones-sub mountainous zones, central zone, and southwestern zone.
→ Kandi belt is included in the sub-mountainous zone.
→ The sub-mountainous zone receives heavy rainfall and there persist problem of soil erosion in this zone.
→ Crops cultivated in, sub-mountainous zones are wheat, maize, paddy, basmati, potato, oilseed, etc.
→ The crop cycle in the central zone of Punjab is wheat-paddy rotation.
→ The crop cycle in the southwestern zone is cotton-wheat rotation.
→ An intensive cropping system means growing more than two crops in a year.
→ Green manuring must be done before cultivating Kharif crops like basmati rice and maize.
→ Maize-based cropping cycle is maize-potato-Summer Moong. or sunflower, maize-potato or Toria-sunflower, etc.
→ The soybean-based cropping system is soybean-wheat-cowpea. This cycle helps in maintaining soil fertility.
→ Groundnut-based cropping system is groundnut-potato or toriya or pea or wheat, groundnut-potato-bajra (fodder), groundnut- toria, or gobhi sarson.
→ Fodder-based cropping system is maize-berseem-bajra, maize-berseem-maize, or cowpea (rawanh).
→ Vegetable-based cropping system: potato-onion-green manure-potato-ladyfinger-early cauliflower, potato (seed)- radish or carrot (seed)-ladyfinger (seed).