Development of an open lesson on the subject

"Fundamentals of agronomy»

in the group T/M-20 specialty " Tractor driver of agricultural production»

 

 

 

 

The theme of the lesson:

"Weeds and control measures»

 

 

My teacher

D. A. Streltsov

 

 

 

 

 

 

 

S. borovskoi 2015

Didactic goal: to create conditions for awareness and understanding of educational information through the elements of modular technology and interactive inclusion of students in the educational process.

Purposes:

to form the concept of weeds and weeds of agricultural crops;
to prove that weeds cause significant damage to cultivated plants, resulting in a decrease in yield and quality of the crop;
to reveal the biological features of weeds, allowing them to compete successfully with cultivated plants;
to acquaint with classification of weed plants on a way of food, reproduction and life expectancy;
to form an idea about the ways of accounting for weeds in crops.,
to form an idea of measures of protection of cultivated plants from weeds;
to continue formation of communicative abilities, information competence, to build the individual educational trajectory.


Planned result:

students during the lesson should:

define weeds and weeds;
be able to justify the various harm caused by weeds.;
draw conclusions about why it is difficult to fight weeds;
to have an idea of economic thresholds of harmfulness of weeds and their classification;
describe the method of accounting for weeds;
be aware of the methods of protection of cultivated plants;
use different sources of information;
work in pairs.


Main terms and concepts: weeds, direct and indirect harm of weeds, classification of weeds, technology of protection of cultivated plants from weeds.

Intersubject relations: biology-phases of plant development, chemistry-rules of safe work with pesticides.

Material and technical equipment:

Literature: textbook Tretyakov N. N. "agronomy" pp. 133-134.
Video " Weeds»
Electronic presentation on the topic in the program Netobook
Multimedia projector, computer, interactive whiteboard.
Software tools: Word, Notebook
Task cards.


H OD U R O K A

 

1. Organizational moment.


1.1. Checking present.

1.2. Checking readiness for the lesson.

 

number

 

Training material indicating assignment

Guide to mastering the material

 

Goal:as a result of mastering the content of the module you have to form knowledge about weeds, how they are spread, about a variety of harm caused by weeds cultural; on how to mainstream weeds and the threshold of severity depending on the classification of crop protection methods.

 

Carefully read the lesson goal.

one

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Repetition studied.

Goal:check the understanding of basic concepts of soil treatment, soil treatment techniques to link the protection of crops from weeds.

Setting №1,2,3- performed by individual learners on the interactive whiteboard.

Setting on the cards on the theme "Methods of soil tillage"

Set your soil cultivation.

 

number

Admission tillage

Brief description of methods.

Letter

one

Harrowing

Aligns the surface of the soil, improve seed to soil contact and speeds up germination.

BUT

2

cultivation

Admission is often used at plowed fields for cutting large blocks, as well as for grinding roots of weeds.

B

3

Rolling

The purpose of this method to align and loosen the soil surface to prevent evaporation of moisture capillary to destroy weeds in phase strings.

AT

four

disking

tillage technique is especially necessary before planting to create aligned "dense bed" culture seed.

During the growing row crop technique is used for weed control.

D

Teamwork groups of validating the performance of tasks.

Setting 1,2,3-priced separately teacher.

 

Work independently in a notebook for examinations - run the test.

 

 

Check the results.

For each correct answer - 1 point

 

Oral answer by one student notebooks, other test and exhibited scores in the evaluation sheet.

2

 

The harm caused by weeds

Goal:to form the concept of Weeds and plants

 weeds of agricultural crops;

§  prove that weeds cause considerable damage to the crop plants, expressed decrease in yield and quality of the harvest;

The task:Read the text of the training material on p. 1-2 and answer the questions.

1.       Why is the same plant species called healing, food, weed? (Give examples)

2.       Some direct harm caused by weeds cultural?

3.       Explain indirect harm caused by weeds cultural.

 

Work independently with study material

 

Check the job

 

For each correct answer to the question - put 1 point in the evaluation sheet.

3

.

 

 

 

 

 

 

 

 

Biological features of weeds.

Goal:reveal the biological features of weeds, allowing them to compete with the crop plants;

 

The task:using the text of the textbook on pp. 67-68, answer the question.

1. Why it is very difficult to deal with weeds?

Evaluation criteria: 3 points for a correct answer

2- score for one error.

1- score 2 errors.

0- points for three or more.

 

Work independently in a notebook

 

Work with the group, checking the assignment.

For the correct answer to the question - 3 points.

 

four

 

 

 

 

 

 

 

Classification of weeds

Goal:be aware of the classification of harmful plants by the method of feeding, breeding, and life expectancy;

The task:Fill in the scheme №1 (on a separate sheet of paper)

 

Evaluation criteria: 3 points for a correct charting.

2- score for one error.

1- score 2 errors.

0- points for three or more.

 

 

Fill scheme using educational material compare with the standard answer on the board.

for the correct

charting - 3 points set in the evaluation sheet.

5

Economic threshold and a method of counting weeds

Goal:have an idea of the economic threshold of weeds and the method of their calculation;

The task:Refer to the table of harmfulness of weeds on the interactive whiteboard and textbook page 76 give an answer to the following question:

1. What determines the threshold of harmfulness of weeds?

2. Solve the problem:

Counting all weeds held in spring wheat crop 10 ha, with the following values

1. podschet- 3 plants;

2.podschet -5 plants;

3. count -2 plants;

4. podschet- 1 plant;

determine the threshold of harmfulness of weeds in crops and give recommendations on the feasibility of destructive events (Herbicide).

 

 

 

Write the answers in your notebook.

 

Working with a group, check the assignment to the space.

For the correct answer to the question - 1 point.

In solving the problem, use the textbook material, and the table on p. 76. For the correct solution to the problem 1 point.

Points put in the evaluation sheet.

6

Classification methods of weed control

Goal:have an understanding of the methods of controlling weeds in crops of cultivated plants.

Exercise 1Table according to explore methods of weed control on training material №

table-classification methods of weed control

types

Kinds

1. Warning

§  cleaning of sowing material;

§  cleaning container;

§  correct storage of manure;

§  timely and proper harvesting;

§  feed preparation.

2. Fighter

§  mechanical;

§  chemical;

§  biological.

3.Special

§  organization;

§  environmental;

§  Phytotsenotichesky;

§  complex.

Task number 2 Give affirmative or negative response to the following statements:

one.Depletion is a multiple cropping weeds working bodies of cultivators.

2.Strangulation is a pulling on the surface of the roots of weeds working bodies of cultivators.

3.Pre-emergence harrowing - a harrowing on shoots.

four.Cleaning seed refers to physical measures to combat weeds.

5.Himicheskie control measures are not safe for the environment.

6. Fertilizers increase the competitiveness of the crop.

7. Herbicides are only continuous action.

8.Vyzhiganie field after harvesting urozhaya- refers to the environmental measures to combat weeds.

9.Kartirovanie- is to create a card to put on them information about the number of weed species and their density.

10. tillage techniques alignment, looping a good effect in the fight against weeds.

 

 

number issue

one

2

3

four

5

6

7

8

9

10

The answer (yes or no)

                   

 

 

Independent work with the material.

 

After studying the material to perform a task №2.

 

 

 

 

Perform a work table.

 

Working with a group, check the assignment to the space.

 

 

Evaluation criteria: 5 points, 10-9 correct answers; 4 points-8 correct answers; 3 points 7 of correct answers; 2 points-6 responses.

 

 

 

 

7

 

Summing up the results of the lesson.

1. Evaluate your work in class counting the number of points.

Evaluation paper

Last name, first name

one

2

3

four

5

6

total

evaluation

 
                 
                       

 Evaluation criteria: Score 20 points -5

14 points score -4

8 points score -3

3 points score -2

2. homework pp 140 -. 146

 

Fill on a separate sheet, pass the teacher.

 

Task on the interactive whiteboard on the topic: "Methods of soil cultivation»

 

Task #1 Game moment: "Black box "(on the interactive whiteboard)

 

For a few suggestions, guess what is hidden in the Black box.

(the correct answer is checked by removing the front side of the black box)

1. This is a method of tillage.

2. It is not the main processing technique.

3. This technique is carried out before sowing of crops and after planting and to care

for individual cultures.

4. The soil is treated mainly to a depth of 8 cm.

5. The purpose of this technique is to level and loosen the soil surface, destroy the shoots of weeds.

6. When this reception is carried out early in the spring, it is often called

closure of the moisture.

7. For carrying out this technique using a needle, mesh, and teeth

harrows.

 

 

Task number 2 Set the match (on the interactive whiteboard)

 

Move the tillage techniques according to their characteristic, (check the correctness of the answer is carried out on the slide removing invisible rectangles).

 

Small processing

Soil tillage to a depth of 8 cm

Primary treatment

soil tillage to a depth of 8 to 16 cm

surface treatment

First deepest tillage

 

 Task number 3 Set the correspondence of soil cultivation techniques (on the interactive whiteboard)

1.Methods of soil treatment destroying weeds

2.Methods of soil treatment do not affect weeds.

1.Chiseling. Tillage. Cutting. Groundless plowing.

2. Rolling. Alignment. Cultivation. Harrowing. Plume. Stubble. Disking.

 

Task on the cards on the topic " Methods of soil treatment»

Task number 4 (individual)

 

Establish compliance with the methods of soil treatment.

number

Admission tillage

Brief description of methods.

Letter

one

Harrowing

Aligns the surface of the soil, improve seed to soil contact and speeds up germination.

BUT

2

cultivation

Admission is often used at plowed fields for cutting large blocks, as well as for grinding roots of weeds.

B

3

Rolling

The purpose of this method to align and loosen the soil surface to prevent evaporation of moisture capillary to destroy weeds in phase strings.

AT

four

disking

tillage technique is especially necessary before planting to create aligned "dense bed" culture seed.

During the growing row crop technique is used for weed control.

D

 

 

 

ОТВЕТ на задание:

 

 

Reception processing of the soil

1

2

3

4

Brief description of the appointment

В

Г

А

Б

Task number 2 Give an affirmative or negative answer to the following statements:

1. Attrition is the repeated pruning of weeds by the working organs of cultivators.

2. Strangulation is pulling the roots of weeds to the surface by the working organs of cultivators.

3. Pre-emergence harrowing is harrowing on shoots.

4. Seed cleaning refers to physical measures to control weeds.

5.Chemical control measures are not safe for the environment.

6. Fertilizers increase the competitiveness of cultivated plants.

7. Herbicides are only continuous action.

8.Burning the field after harvesting-refers to environmental measures to combat weeds.

9.Mapping is the creation of maps with information on the number of weeds and their density.

10. Methods of soil treatment leveling, grinding give a good effect in the fight against weeds.

Response to the task:

 

№question's

1

2

3

4

5

6

7

8

9

10

Answer (Yes or no)

yes

no

yes

нет

yes

yes

no

no

yes

no

 

Name of the student______________________________________

 

Recommendations for completing the evaluation sheets.

The evaluation sheet is filled out systematically after checking the performance of tasks for each Educational element, at the end of the lesson all points for all elements are added and the final score is displayed.

Evaluation criteria for the final score: SCORE 5 - 20 points

4 - 14 points

3 - 8 points

2 - 3 points

Evaluation sheet

Name, surname

1

2

3

4

5

6       

result

Evaluation