Ans. 1) sowing means to scatter seeds on the ground for growing.

ans. 2) a seed drill is a sowing device that precisely positions seeds in the soil and then covers them.

ans. 3) manure is animal dung used for fertilizing land.

ans. 4) fertilizer is a chemical or natural substance added to soil or land to increase its fertility.

ans. 5) irigation supplies dry land with water by themeans of ditches,etc.
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1)sowing is a process of planting crops used by farmers.
there are three types of hand sowing,they are:
depth of sowing must be 2-3 times more than the size of seed
2) Manure is an organic matter used as organic fertilisers in agriculture.manure contribute to  the fertility of the soil by adding organic matter and nutrients such as nitrogen.EXAMPLES are cow-dung and kitchen wastes such as tea leaves,fruit peel,vegetable peel,etc.
3)seed drill is a sowing device that precisely positions seeds in the soil ad cover them.
4) fertilisers are organic or inorganic material of natural or synthetic origin that is added to the soil to supply one or more plant nutrients essential for the growth of plant.
5) Irrigation is the artificial application of water to the land or soil.It is used to assist in the growing of agriculture crop,maintenance of landscapes,and revegetation of distributed soil in dry areas and in the period of inadequate rainfall. 

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