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Grasses

Itchgrass

A tall, stiff grass whose leaf sheaths carry glassy hairs that prick and itch the skin, topped by a thin, round, jointed spike.

Rottboellia cochinchinensis Grasses, annual Fact sheet
Itchgrass (Rottboellia cochinchinensis) growing thick along the edge of a wet field
Photo: Roland Muench, CC BY, via iNaturalist

Also called

Agingay

Crops it troubles

Mais Corn, yellow or field Mais na matamis Corn, sweet Mais na malagkit Corn, white or glutinous Batad Sorghum Tubo Sugarcane Monggo Mungbean Mani Peanut Utaw Soybean Kamoteng kahoy Cassava Kamote Sweet potato Sitaw String bean Paayap Cowpea Sigarilyas Winged bean Patani Lima bean Kadyos Pigeon pea Bulak Cotton Gabi Taro Ubi Purple yam Patatas Potato Luya Ginger Luyang dilaw Turmeric

How to tell it is a grass

Round, hollow stems with joints, and leaves in two rows. The group decides what kills it, so check the stem and the leaf before you buy a herbicide.

How to keep it out

Never let it set seed: pull or slash it before it flowers, clean the harrow, planter and sheller after a weedy field, and plant a crop or cover crop that closes over the ground fast.

Active ingredients whose labels name it

  • Fluazifop P butylHRAC 1
  • GlyphosateHRAC 9
  • SulfentrazoneHRAC 14
  • SethoxydimHRAC 1

Herbicides registered in the Philippines with these active ingredients name this weed on their labels, each for the crops its label lists, such as abaca, banana, cacao and calamansi. Use one only where the label names your crop, and follow it.

How to control it

What to do and which active ingredients work depend on your crop and how old it is. The weed control helper in anee.io gives both, for corn and every other crop it grows in.

Open the weed control helper

Not sure it is this one?

Many weeds look alike. Send a photo to Anee, the smart farm technician in anee.io. She reads it with your crop, its age and the weather, and tells you what it most likely is and what to do first. In Tagalog or English.

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