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Weeds

Weeds
28
Jul

Cyperus rotundus L. (Purple nut sedge)

 

Family: Cyperaceae.

Description:

 One of the worlds worst weed.

 Height -15-60 cm.

 The plant is swollen and thickened at the base. It has triangular smooth scape, 10 to 60 cm in height, arising from the centre of a basal cluster of narrow grass like leaves of 30-50 cm long and 8 mm wide.

 The leaves are smooth shiny, dark green and grooved on the upper surface.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Cyperus iria L.

 

Family: Cyperaceae  .

Description:

- Widely distributed species in paddy fields.

- Stems 15 to 50 cm high, trigonous

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Monochoria vaginalis

 

Family: Pontederiaceae.

Description: Root stock short and sub erect.

 Leaves linear or narrowly ovate with cordate base 5 to 15 cm long.

 Propagation - seed and root stock.

 Thrives well in moist places.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Monochoria vaginalis

 

Family: Pontederiaceae
Description:
- Root stock short and sub erect.
- Leaves linear or narrowly ovate with cordate base 5 to 15 cm long.
- Propagation - seed and root stock.
- Thrives well in moist places.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Echinocloa crusgalli ssp.

Family: Poaceae

Description: -

Tufted annual grass. -

Height  30- 60 cm with thick, coarse, mostly erect smooth and branching at the base.

 Sessile leaf blades attached to a smooth sheath which encircles the stem in the absence of ligule.

The leaf blade is 10-30 cm long and 5-20 mm wide. Midrib is prominent.

 Stem is stout. Culms branches at the base and produce tillers.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
CRRI
28
Jul

Portulaca oleracea L. Common purslane

 

Marathi Name: Ghol.

Family: Portulacacaeae.

Description:

• Prostrate succulent herb.

• It produces by seeds and stem fragments.

• Stem is succulent, fleshy, freely branched, normally forming mats when infesting intensively. Branches often reddish or purplish.

• Distributed throughout the tropical and subtropical areas.

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Eclipta alba

Marathi name: Maka.

Family: Asteraceae .

Description:

• Diffusely branched annual herb.

• Leaves opposite, sessile, linear or oblong lanceolate narrowed at both ends;

• Propagation - seeds.

File Courtesy: 
RARS, Karjat
28
Jul

Commelina benghalensis L. Day flower

 

Marathi Name: Kena
Family: Commelinaceae
Description:
• Broad leaf herbaceous weed
• Widely distributed in the tropics.
• Succulent or fleshy creeping and rooting below
• Seeds closely pitted.
• It s well adapted to moist swampy conditions making rapid growth and thick infestation can smother low growing crops.
• Propagation - broken pieces of stem.

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Celosia argentia L. ( Cox comb)

 

Marathi Name: Kuradu, Kombada

Family: Amaranthaceae

Description:

• Erect glabrous tall herb with 1-1.5 m tall.

• Leaves alternate, simple and unbranched.

• Shallow root system.

• Propagation -seeds which germinates with the onset of rains.

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Ageratum conyzoides L. Goat weed

Marathi Name:

Family: Asteraceae

Description:

• Winter annual .

• Erect, softly hairy and 50-90 cm tall annual herb;

• Leaves opposite soft stalked, ovate, 2-10 cm long, 0.5 to 3 cm wide with a pointed tip and the margin regularly serrated with blunt teeth.

• Stem is erect, hairy, cylindrical and nodes enlarged. • Fruit is achene black and ribbed with pappus of fine sift hairs on the upper end. • Propagation - seeds. • Distributed in tropical and subtropical countries

File Courtesy: 
RARS, Karjat
28
Jul

Amaranthus spinosus L. Spiny amaranth

Marathi name: Kathe math
Family: Amaranthaceae
Description:
• Erect spinous herb
• Stem reddish; it has pair of straight spines of 1 cm long at the base of petioles. Leaves long petioled, ovate or oblong, leaf axils with spines;
• Propagation - seeds.
• Distributed in warm areas

File Courtesy: 
RARS, Karjat
28
Jul

Dactyloctenium aegyptium L. Beauv. (Crowfoot grass)

Marathi name: Harkeen
Family: Poaceae
Description:
• Height - 10-62.5cm
Leaves flat, 5-20cm long, glabrous

File Courtesy: 
RARS, Karjat
28
Jul

Eleusine indica L. Gaertn (Goose grass)

Marathi Name: Ranti Nachni.

Family: Poaceae.

Description:
• Coarse tufted annual grass.
• Height of 30-45 cm with laterally flattened shoots.
• The roots are fibrous, deep and spreading.
• It flowers between June and September.
• Propagation - seeds and old roots.
• Distributed throughout India.

File Courtesy: 
RARS, Karjat
28
Jul

Digitaria sanguinalis L.scop (Large crab grass)

 

Marathi name:

Family: Poaceae

Description:

• Annual grass.

• Though it is annual it exhibits perennial growth.

• It flowers between July and September.

• Propagation - seeds.

• Thrives both in tropical and temperate climates, moist as well as dry and hot weather conditions

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
http://www.google.co.in/imgres
28
Jul

Echinochloa colonum L. Link ( Jungle rice)

 

Marathi Name: Pakhad .

Family: Poaceae.

Description:

• Slender annual.

 • Inflorescence is a panicle branching racemes rather distant.

• Widely distributed throughout the warm tropics.

Propagation - seeds

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Scirpus maritimus L. ( Bull rush)

Marathi Name:

Family: Cyperaceae

Description:

• Rhizomatous plant.

Rhizomes with tubers Propagation -rhizomes

File Courtesy: 
RARS, Karjat
28
Jul

Paspalum conjugatum Berg ( Hilo grass)

Marathi Name:

Family: Poaceae

Description:

• Creeping solaniferous perennial grass

• Culms are 20-40 cm long, erect with smooth nodes.

• Propagation - runners and seeds. It also spreads quickly through stolons.

• It is prominent in humid tropics and is a serious weed in India.

File Courtesy: 
RARS, Karjat
28
Jul

Panicum repense L.

 

Marathi Name:
Family: Poaceae
Description:
• Creeping perennial
• Persistent weed
• Propagates - vegetatively through rhizomes. Rhizomes are knotty and swollen and send out erect culms from nodes.

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Panicum repense L.

 

Marathi Name:
Family: Poaceae
Description:
• Creeping perennial
• Persistent weed
• Propagates - vegetatively through rhizomes. Rhizomes are knotty and swollen and send out erect culms from nodes.

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
28
Jul

Fimbristylis milacea L. Vahl.

 

Marathi Name:
Family: Cyperaceae
Description:
• Stems weak;12.5 to 45 cm high;
• Leaves narrow, acuminate; bracts 2-3;
• Nuts three angled, yellowish brown

File Courtesy: 
RARS, Karjat
Photo Courtesy: 
Dr. B.Sreedevi (DRR)
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