chapter 1 Flashcards
(12 cards)
what are kharif crops?
crops that are sown in the monsoon season
list 1 advantage of ploughing the soil
the roots can penetrate deeper into the soil
list 1 advantage of levelling
it helps soil retain moisture and promotes uniform irrigation
why should seeds be sown at correct depth?
if they are sown too deep they won’t be able to respire and if they are sown on the surface they may get eaten by birds
what is broadcasting?
manual method of sowing when the seeds are scattered by hand
what are the benefits of leaving the field fallow in agriculture?
leaving the field fallow for one or more seasons makes the soil replenish the nutrients that have been lost
what is mixed cropping? list one advantage
two or more crops are grown together in the same field in such a way that nutrient needs of one crop are fulfilled by the other
what is farmyard manure?
it is manure obtained from cattle dung and urine
in what lands is sprinkler irrigation useful?
sprinkler irrigation useful when the land is uneven or the soil is not able to retain water for a long time
why should we remove weeds?
weeds compete with the main crop for space and nutrients and some of them can also be poisonous
what is winnowing?
it is the process of separating the grains from the chaff with the help of the wind
what is hybridisation?
the technique of developing new varieties of crops by using two different crops
