Composed By: Ahmed Mukhtar 2013-ag-3660

University Of Agriculture Faisalabad (UAF) andBarani Agricultural Research Institute (BARI) Chakwal

WeedA weed is a plant growing out of its

place.

A wild plant growing where it is not wanted and in competition with cultivated plants.

Introduction There are over 30,000 species of weeds

round the world. Out of these about 18,000 are known to cause serious losses.

In the list of world’s worst weeds Dela (cyperus rotundus) ranks first and Khabbal grass (cynodon dactylon) second position.

30-35% yield losses due weeds.

Identification of Weeds

Two types of weeds

Broad leaf weeds

Narrow leaf weeds

BROAD LEAF WEEDS

PETTY SPURGE - لالدودھک

Fumitory –شہاترا

Field bindweed - لہلی 

Horse Purslane -  سٹ اٹ

Sun spurge – چھتریدودھک

Wild jute - پٹسن جنگلی

False maranth - تندل

Puncture Vine -  اڑبھک

Wild Carrot- گاجر جنگلی

Common Goosefoot-باتھو

Swine cressھالوں-

Stellaria Media بوٹی -پھولن

Green Amaranth - چوالئی جنگلی

Blue Pimpernel- بوٹی بلی

Common Vetch-ریواری

Wild Mustard- سرسوں جنگلی

Milk Thistle- دودھک کنڈیالی

Canada Thistle-لھ

Broad Leaved Dock- پالک جنگلی

Sweet Clover-سینجی

Black Night Shade- پیلک/ مکو

Blue Daisy-کاسنی

Fat Hen-کرونڈ

Wild Safflower-پہولی

Crow Pea مٹر -جنگلی

Heliotrope- چرا اونٹ

Narrow Leaf Weeds

Green foxtail -  گھاس لومڑ

Wild Oat- جئ جنگلی

Jhonson Grass - بارو

Jungle Rice - گھاس سوانکی

Nut Grass گھاس -ڈیلا

Wild Onionپیازی -

Egyptian Grass گھاس -مدھانہ

Canary Grass- سٹی دومبی

Water Grass- گھاس نرو

Rye Grass- گھاس رائ

Cynodon dactylon- گھاس کھبل

Large Crab Grass- کھبل موٹی

Weed dispersal

Wind Water FYM Animals Birds Machine

1. Combine harvester2. Plough

Preventive Measures of Weed Control1. Use clean seed.

2. Use well decomposed compost and F.Y.M.

3. Remove the weeds before formation of flowers.

4. The cropped area, bunds irrigation channels, waste lands, public places etc. should be kept clean or free of weeds. 

Cont…5. Do not permit the livestock to move from weed infested area to

clean area.

6. Farm implements and machinery should be properly cleaned e.g

i- Cultivator ii- Harvester

7. Keep threshing yard, compost and F.Y.M. Pits free from weeds.

8. Follow the legal and quarantine measures while importing crop seeds, food grains , seedlings etc.

Methods of weed control

i Culturalii Biologicaliii Chemicaliv Integrated

• Hand weeding • Mechanical weeding (animal-drawn weeders & machine-power

weeder.• Mulching• Crop Rotation • Tillage • Burning • Flooding • Sowing/planting time and crop spatial management• Crop genotype choice• Cover crop (used as Living mulches) • Intercropping• Fertilization

Methods of Weed Control

Weeds Removal Tools

Spade/shovel

Khurpa

Sickle

Blade Weeder

Mechanical Weeder

Mechanical Weeder

Grass Cutter

Bar-harrow

Biological Weed Control

Biological weed management refers to the use of biological agent to control weeds.PestPredators PathogenParasites

CHEMICAL WEED CONTROL

Herbicide(s), also commonly known as weed-killers, are chemical substances used to control unwanted Plants.

Selective herbicides

Non-selective Herbicides

Broad-range herbicides

Herbicide Classification Broad Leaf herbicides

Bectral super Halt

Narrow leaf Herbicides Clover Lectofen Pomosuper

Broadspectrum Herbicides Glyphosate (Round up) Dual Gold

Weed Removing by Plough

Herbicides Application

Use teejet nozzle for herbicides application.

Boom Sprayer