Text В Break crops
The acreage of cereals may sometimes be increased considerably by growing these crops one after another on the same area. It is not uncommon to find four, five or even more successive or following one after another cereal crops in a rotation. If cereal crops are grown on the same land for many years in succession, such practice is known as continuous cereal growing. In the past this practice often resulted in low yields due to weeds and diseases. Today there is better control of these by chemicals such as fungicides and herbicides and thus farmers have the possibility of growing cereal crops for longer periods of time.
In practice, it is common to grow wheat for two or three years, barley for longer period and then to break (нарушить) the sequence with a crop which is called a break crop. The aim of a break crop is to prevent diseases from increasing.
The farmers usually grow those break crops which are as profitable (выгодный) to grow as cereal crops.
The break crop to be grown varies with the soil and climate, farming and rotation systems and other factors.
There are two main types of break crops:
1. Combinable break crops. They are peas, beans, oil seed crops, corn, etc.
2. Other break crops, such as root crops and forage crops.
7. Based on text В , negate the following statements.
1. Continuous cereal growing is less practiced at present than in the past.
2. The only possible way of controlling diseases in growing cereals is the application of chemicals.
3. Environmental and other factors do not affect the choice (выбор) of a break crop to be grown
Listening and Speaking Focus
Watch the video, answer the following questions:
https://youtu.be/NxNOYkNaQ_k
1. What is crop rotation?
2. Who discovered the principle of rotation of cultures?
3. Which plants replace wheat?
UNIT 15. WHEAT AND RYE
| In this unit you will learn: | Grammar focus: - Forms of the Infinitive. - Complex subject. Complex object. (revision). - Word meaning: one (revision). - There-insertion existential clauses (revision). Vocabulary focus Reading and comprehension focus: - Text A. Wheat (Part I). - Text B. Rye. Listening and speaking focus |
Grammar Focus
| В английском языке существует несколько форм инфинитива
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Формы инфинитива, в составе которых имеется глагол "to have", называются перфектными. В инфинитивных конструкциях перфектные формы обозначают действие, предшествующее действию, выраженному сказуемым. В русском языке им соответствует сказуемое в прошедшем времени.
Сравните:
1. The agronomist was sure that mixed fertilizers should be applied.