explain how fertilisers are different from manure
what is irrigation
what are weeds? how can we control them?
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Answers
Answer:
fertilizers are different from manure as the fertilizer is of natural and synthetic and some of them are not perfect to irrigation where as manure is only natural but no synthesis and it is best for irrigation technique.
IRRIGATION: It is the process of applying controlled amounts of water to plants at needed intervals.
WEEDS: weeds are the waste plants in the garden , they look like a normal plant but they spoil the crop.
WE CONTROL WEEDS by separating them from the crops by using weeding methods
1.ans=(i) Manures are organic substances while fertilisers are chemical substances. (ii) Manures are prepared in fields while fertilisers are prepared in factories. (iii) Manures contain all the nutrients while fertilisers are rich in certain nutrients. (iv) Manures provide humus while fertilisers do not provide any humus.
2.ans=Irrigation is the process of applying controlled amounts of water to plants at needed intervals. Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall.
3.ans=Weeds are unwanted plants. They grow with crops and compete for nutrients and water with main crop. So weeds are very harmful. Process of controlling the weed is called weeding.