Question

In the early days of farming, people did not understand how plants obtained essential nutrients. It so happened that wood ash, fish remains and slaughterhouse waste were thrown on vacant land just to get rid of them. Then people started to notice that the grass, bushes and shrubs on this vacant land began to grow very well. They reasoned that if their farmland were similarly treated, the growth of their crops would also improve. People gradually began to realize that the nutrients required by plants came from the soil and that the amount of nutrients could be increased by the application of such organic remains to the soil. Thus started the manuring process in farming. The practice of manuring has been practised as early since the seventeenth century. However, the importance of manuring was not properly understood until scientists began to study the nutritional needs of plants and gave birth to fertilizers. Thus, gradually, the use of fertilizers became acceptable by farmers. There are many types of manure and fertilizers currently being used. Manure is a substance derived from animals and plants. The most important advantage of using manure is the fact that they not only supply a wide range of plant nutrients, but also improve the structure of the soil. The crumbs structure is a desirable condition of cultivated soil. The addition of manure to soil will increase the inorganic and humus content which helps to prevent soil erosion and loss of plant nutrients when it rains. The common manure used in farming consists of farm yard manure, compost, blood meal, bone meal and fish meal. Unlike manure, fertilizers are inorganic substances which do not improve the structure of the soil. They only supply extra amounts of nutrients to the growing plants when applied to the soil. The commercial fertilizers commonly used today can be classified into three major categories; namely, nitrogen (N), phosphate and potash fertilizers. Besides knowing the type of fertilizers to use, a farmer also needs to know when to apply the fertilizer and how to apply it. The fertilizer should be applied at the time when the plants need a particular nutrient most. The time and method of application will determine how profitable the fertilizers have been used in farming. Fertilizers which have not been properly applied cannot be absorbed in large quantities by plant roots. These fertilizers may be washed away by rain or they may kill the plants. This would mean a definite financial loss for the farmer.
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Choose the correct option and rewrite the sentences.
1) What did the people not understand in the early days of farming? i) how farming is done ii) how plants obtained essential nutrients iii) how grass, shrubs and bushes grow 2) What is manure? i) A substance derived from animals and plants ii) the soil particles to form soil crumbs iii) a combination of nitrogen, phosphate and potash 3) When should fertilizers be applied? i) When the plants get dried ii) When the plants need a particular nutrient most iii) In the early days of farming 4) What determines the profitability of the fertilizers? i) grass, bushes and shrubs ii) nitrogen, phosphate and potash iii) The time and method of application

Answer 1

Answer:

1 .ii

2.i

3.ii

4.iii

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Answer 2

Answer:

2 ,1 ,2,3 please follow me