Lesson the common seed bearing plant such as a grass consists of four major parts: root, stem, leaf and 4 flower. The Root

GLOSSARY

1. 
   clay loam –унумдортупроқ;
   
2. 
   silt loam–балчиқ;
   
3. 
   tile drains – тупроқзахиниқуритмоқ;
   
4. 
   favor – ёрдамбермоқ;
   

TRANSLATE INTO UZBEK

1. 
   Plants can be seen everywhere.
   
2. 
   One wants the sugar percentage of sugar beets to be as high as possible.
   
3. 
   

ANSWER THE QUESTIONS

1. 
   What mean temperature is required for sugar beets to grow successfully?
   
2. 
   What is of great importance for the development of sugar beets?
   
3. 
   Because of what is the sugar percentage depressed after heavy rains?
   
4. 
   On what soils are better crops obtained?
   
5. 
   What soils are not used for sugar beets?
   
6. 
   What soils favor the development of root-rotting diseases?
   

LESSON 50

TEXT: POTATO BREEDING

Economic characters. The search for new and improved varieties of the potato has been in progress for approximately 200 years.

During that time innumerable varieties have been raised and brought into cultivation, some to attain popularity and an important place in agriculture, but many to disappear after a short period of time.
The characters which determine the economic value of varieties are so numerous and sometimes intangible that the compilation of a comprehensive detailed list is hardly possible. It may however, be of advantage here to list in general terms the more important features aimed at a present – day potato breeding, on the understanding that a range of maturity types possessing nearly all the following qualities is required to suit a wide range of environmental conditions:
High yield;
Attractive tuber shape;
Good colour, texture and 31weeds of tube flash;
Uniform medium-sized tubers;
Good keeping quality;
Good grouping of tubers in drill;
Good foliage to suppress weeds;
Immunity from wart disease;
Blight Mosaic and Virus;
Resistance to Leaf-Roll, to Scab, to Dry Rot- and other storage diseases;
Resistance to Eelworm;
Resistance to climatic extremes;
Resistance to the Colorado beetle;
To raise and bring new varieties of potato into cultivation is our task.