Locusts are major agricultural pests that exist in solitary and gregarious phases. Nine locust species are recognized, three of which impact India. Locust plagues cause estimated $30 million in losses annually. The three main locust species in India are the desert locust, migratory locust, and Bombay locust. Locusts undergo incomplete metamorphosis with egg, nymph, and adult stages. Swarms of winged adults or bands of hoppers can cover large areas and voraciously consume vegetation, sometimes causing famines. The Locust Warning Organization was established to monitor and control locust populations in India.
In this PPT slides you will come to know about the different kinds of pest which is infesting in WHEAT plant. And also you will come to know about their management practices and also you will have an knowledge about some common chemicals which is being uses to eradicate the pests/diseases infesting in wheat plant.
In this PPT slides you will come to know about the different kinds of pest which is infesting in WHEAT plant. And also you will come to know about their management practices and also you will have an knowledge about some common chemicals which is being uses to eradicate the pests/diseases infesting in wheat plant.
This presentation about Wild Locust (Migratory Locust).
This PPT discuss the topic about Taxonomy, Life Stages, Life History, Damage and Controls
Contact Email: mzeeshan_93@yahoo.com
This presentation contains valuable information on major insect pests of stored foods like Angoumois grain moth, Indian meal moth, Rice moth, Potato tuber moth etc.
This presentation about Wild Locust (Migratory Locust).
This PPT discuss the topic about Taxonomy, Life Stages, Life History, Damage and Controls
Contact Email: mzeeshan_93@yahoo.com
This presentation contains valuable information on major insect pests of stored foods like Angoumois grain moth, Indian meal moth, Rice moth, Potato tuber moth etc.
Fall Army Worm is a new insect in Bangladesh. The people will able to know how it is attack, its harmful effect etc.it is very dangerous insect for our crop cultivation. It is capable to destroy our crops totally.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
2. About Locust
• Locusts are the major agricultural pests of the
world.
• Out of 5000 different species of grasshoppers,
those which can live in two different phases viz.
solitary & gregarious phase are called locusts.
• Of these, only nine species have been recognized
as locusts, three species belonging to Indian
sub-continent.
• Economic losses due to locust plagues estimated
as 30 million tone/year.
5. Distribution
• Major agricultural pests of the world.
• Desert locust :- Desert locust is considered
the most important pest all over India.
• Migratory locust :- Important only in
Maharashtra, Gujarat, and Rajasthan.
• Bombay locust :- Mainly Maharashtra
& South Indian zone.
7. -: Identification :-
• Large size insect.
• Body length from 35-50 mm for males & 45-55
mm for females.
• Wings are colorless and exceeding clearly the
abdominal extremity.
• The color can vary but is usually green, brown,
yellowish-green or grey.
• The mandibles are dark purple to black.
8. -:Phases :-
Nymph : Color varies according to surrounding
vegetation.
Adult : Greenish grey throughout life.
Behave independently.
Repelled from other locusts.
Walk slowly with creeping.
Active mostly at night.
Diet restricted.
Solitary
10. -: Life Stage :-
Eggs :-
• Eggs are yellowish – brown in
color and 7-8 mm long.
• 1-3 egg pods per female with an
average of 60-80 per pod.
• Egg pod is large slightly bent, 50-
85 mm in length, 7-10 mm in
diameter.
Incomplete metamorphosis.
Three developmental stages, egg, nymph(hopper)
and adult are found.
13. Female lays eggs in a hole in damp, warm or sandy soil
called a Pod usually at a depth of 2-10 cm.
Each pod contain 60-80 pale yellow rice grain shaped eggs
5-6 mm long.
Covers the eggs with frothy liquid to protects from
enemies, dehydration and contamination.
Collection of egg pods laid by a number of locusts is
termed as Egg Bed.
Egg beds may vary from a few square meters to several
hundred square meters and scattered throughout a region.
Egg hatch in 14-20 days.
Afterwards the nymphs move by crawling or hopping
along ground they have no wings.
5 wings nymph instars and nymphs take 4-8 weeks to
complete development Adult is the final stage.
14. Locusts at this level have fully pledged
wings and can fly without problem.
Adult appear from June to early July.
2-4 weeks after fledging, mating start and
females start laying eggs 2-3 weeks later
(usually at the end of July ).
Lifespan of adult is almost eight weeks.
Univoltine in the considered area but can
have up to five generations tropical zones.
Overwinter in the form of eggs.
15. -: Groups :-
Two types of groups are found.
1. Swarms are composed of winged adults.
2. Bands are composed of hoppers (nymphs).
3· One swarm can cover an area of 1000 sq. km.
16. PLAGUES:
Swarms or bands remained in many countries
for periods lasting several years called plagues
causing great damage to crops.
Duration of plague lasts for 5-10 yrs and
recession period 1-8 years.
Both swarms and bands rest on crops and trees
at night, morning they hop and fly to form a
swarm when temperature rise.
They are voracious feeders; feed on any
vegetation often causing famine.
Calotropis, Datura spp. are not fed by locusts.
17. -: Damage :-
Many formed in Rajasthan and Sind, fly north east and
south, thus invade all parts of India and damage kharif
crops.
some swarms overwinter in North Western India and
become active when temperatures are suitable and
damage ‘rabi crops’.
Swarm :-
• If numbers are sufficient, locusts form dense groups.
• Swarms infested areas that are usually 5-50 km.
• There can be 40-80 millions locust in each square
kilometer of swarm.
• Swarms can travel about 5-130 km or more in a day.
18. During outbreaks, swarms damage to pasture,
hayfields, cereal crops, various crops ass well as
plantations of volatile oil bearing plants, many
tree species, young plants of many fruit, vines,
fruit, forest and bush trees.
19. -: Control :-
Cultural control
•Ploughing, digging and harrowing of
places where eggs are laid on large scale
and destroying-laborious.
Mechanical control
•Collecting hoppers with catching machine.
•Killing tem with flame-throwers.
•Crushing them with rollers.
20. Natural enemies
•Rose-colored and common
starlings (Pastor roseus and
Sturnus vulgaris)
•Blister beetle, Ground beetle
and Crickets are eggs predators.
•Flesh flies, Tachinid flies, and
Tangled veined flies are nymph
and adult parasitoids.
21. Chemical Control
The adult beetles can successfully be controlled by treating the
trees with the following insecticides :
a) Carcaryl 0.1%
b) Monocrotophos 0.05%
c) Chloropyriphos 0.05%
The grubs may be controlled by the soil application of following
insecticides :
a) Phorate 10 g @ 25 kg/hac.
b) Ekalux 5 g @ 25 kg/hac.
c) Carbofuron 3 g @ 35 kg/hac.
d) Oftanal 10 g @ 25 kg/hac.
The sprinkling of Chloropyriphos 20 EC @ 5 lit/hac offers of
economic and effective control of grubs.
Spraying the crop with Neem seed kernel powder suspension (1%)
has been found to be very promising.
23. “Locust Warning Organisation (LWO)”
established in 1939 and later amalgamated
with the Directorate of Plant Protection
Quarantine and Storage in 1946.
Locust Warning organization (LWO) is
responsible to monitor and control the locust.
Field Station for Investigations on Locusts
(FSIL) situated at Bikaner.