WEED MANAGEMENT SYSTEMS FOR FIELD CROPS

Presented to

Prof Dr. Nazim HussainSir Hamid Nawaz

DEPARTMENT OF AGRONOMY

OutlineWeed Management

Weed Management Systems

WMS in Field CropsSmall Grain CropsRow Crops

Preventive Control

Mechanical Control

Cultural Control

Biological Control

Chemical Control

Weed Management ..?

“An environmentally sound system of farming using all available knowledge and tools to produce crops free of economically damaging, competitive vegetation.”

Weed Management SystemsA) Small Grain Crops

B) Row Crops

C) Turf

D) Pasture & Rangelands

E) Perennial Crops

F) Aquatic Weed Sites

Field Crops

Weed Management Systems for CropsSmall Grain Crops Row Crops

Preventive

Mechanical

Biological

Cultural

WEED

Weed Management System

Prevention Weed Free Crop Seeds. Weed Free Manures. Clean Harvesting equipments. Elimination of Weed infestation in

irrigation water.

Mechanical (Small Grain Crops)

Mechanical (Row Crops)

Cultural Control Crop selection Rotation Variety selection Planting date Plant population Spacing Fertility Manipulation Mulching

Mulching for weed Control

Mulches stop weed growth:By restricting the penetration of

sunlight to the soil surface

By Releasing Allelopathic Chemicals.

Reduce the germination of weed seeds

Biological Control“Use of living organism’s viz., insects, disease organisms, herbivorous fish, snails or even competitive plants for the control of weeds is called biological control.”

Chemical ControlThere are 4 types of herbicides:Broad Spectrum - these work on a wide variety of weeds.

Selective - these work on a narrow range of weeds.

Contact - these destroy weed tissue at or near the point of contact (they do not spread around the weed), and require even coverage in their application.

Systemic - these move through the weed's circulation system, and can be injected into the weed.

In small Grains In Row Crops

Integrated Weed Control System

Thank you !Any Question ..?