Or
write a paragraph based on the graph that follows (100-120 words).
TRACKING LOCUSTS, OVER THE YEARS
(5
UPSURGE YEARS
Year Swarm Incursions "Plague' Years
1964 04
1812-1821
1984
167) 1843-1844
1973 16
1863-1867
1974 06
1869-1873
1975 19
1876-1881
1976 1 2
1889-1891
1978 D 20
1900-1907
1983 26
1912-1920
1986 (3
1926-1930
1989 D 15
1940-1946
1993
1949-1955
1997 0 4
1959-1962
2019
1500
2020 27
Answers
Answer:
what you need . first clarify that
Answer:
upsurges
The attack of the desert locust used to occur earlier in a phases of plague cycles (a period of more than two consecutive years of wide-spread breeding, swarm production and thereby damaging of crops is called a plague period) followed by a period of 1-8 years of very little locust activity called as the recession period again to be followed by another spell of plague. India witnessed several locust plague and locust upsurges and incursions during last two centuries as indicated below:
Locust plagues observed during different years
Swipe to view
Locust plagues observed during following years
1812-1821 1900-1907
1843-1844 1912-1920
1863-1867 1926-1930
1869-1873 1940-1946
1876-1881 1949-1955
1889-1891 1959-1962
Locust upsurges observed during different years
Swipe to view
Locust upsurges observed
Year No. of swarms incursion
1964 004
1968 167
1970 002
1973 006
1974 006
1975 019
1976 002
1978 020
1983 026
1986 003
1989 015
1993 172
1997 004
2019 276
2020 103
Small scale localized locust breeding have also been reported and controlled during the period 1998, 2002, 2005 , 2007 and 2010. Since 2010 till 2018, situation remained calm and no large scale breeding and swarms incursion have been reported. However, solitary phase of Desert locust has been reported from time to time at some locations in the State of Rajasthan and Gujarat during routine desert locust surveys.