Download PTU B.Sc Agriculture 2019 May 7th Semester 74830 WEED MANAGEMENT Question Paper

Download PTU (Punjab Technical University) BSc Agriculture 7th Semester 74830 WEED MANAGEMENT Last 10 Years 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011 and 2010 Previous Question Papers.

1 | M-74830 (S2)-2511
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc. Agriculture (2014 & Onwards) (Sem.?7)
WEED MANAGEMENT
Subject Code : BSAG-CS 703
M.Code : 74830
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Write short notes on :
(a) Drift reduction agents
(b) Herbicide isomers
(c) Additives
(d) Active ingredient of pesticide formulation
(e) Allelopathy
(f) Persistence of weeds
(g) Emulsifiable concentrates
(h) Adjuvants
(i) Synergists
(j) Control measure of Cynodon dactylon


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1 | M-74830 (S2)-2511
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc. Agriculture (2014 & Onwards) (Sem.?7)
WEED MANAGEMENT
Subject Code : BSAG-CS 703
M.Code : 74830
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Write short notes on :
(a) Drift reduction agents
(b) Herbicide isomers
(c) Additives
(d) Active ingredient of pesticide formulation
(e) Allelopathy
(f) Persistence of weeds
(g) Emulsifiable concentrates
(h) Adjuvants
(i) Synergists
(j) Control measure of Cynodon dactylon


2 | M-74830 (S2)-2511
SECTION-B
2. Discuss the principles of post-emergence herbicides.
3. Explain the allelopathic effects of weeds on maize, sorghum, wheat and sunflower.
4. Explain the common weed dispersal agents.
5. Discuss the classification of herbicides.
6. Briefly explain the compatibility of herbicides with other agrochemicals (additive,
synergistic, antagonistic, independent and enhancement effect).

SECTION-C
7. Explain in detail the biological and integrated weed management practices.
8. Discuss the various methods of herbicide application along with advantages.
9. (a) Explain the concept of crop weed association and competition.
(b) Discuss the critical period of weed competition along with the factors affecting the
competitive ability of crops against weeds.







NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.

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