Skip to content
KisanPe
Crop Protection & Pesticides

Novlect Herbicide: Corteva Rice Weed Management Guide

Novlect is an advanced broad-spectrum post-emergence rice herbicide developed by Corteva Agriscience, combining Rinskor active (florpyrauxifen-benzyl) with cyhalofop-butyl. Engineered for direct-seeded (DSR) and transplanted rice, it provides selective control against stubborn barnyard grass, broadleaf weeds, and sedges with a single application.

Last reviewed: 11 November 2026

Active Ingredients and Dual Mode of Action

Novlect unites two distinct herbicide modes of action to manage complex mixed weed flushes and curb herbicide resistance.

Rinskor active acts as a synthetic auxin mimic, while cyhalofop-butyl acts as an ACCase inhibitor specific to graminaceous grasses.

  • Rinskor Active (Florpyrauxifen-benzyl): Novel arylpicolinate synthetic auxin (HRAC Group 4) binding uniquely to plant auxin receptors
  • Cyhalofop-Butyl: Selective graminicide (HRAC Group 1) inhibiting fatty acid synthesis in grasses without injuring rice shoots
  • Formulation Type: NeoEC formulation delivering fast rainfastness and systemic translaminar foliar penetration

Target Weeds and Application Window

Novlect is formulated to control major weed biotypes that compete with young rice plants during critical early tillering.

It controls weeds showing resistance to traditional ALS-inhibiting sulfonylureas and conventional propanil chemistries.

  • Grassy Weeds: Echinochloa crus-galli (barnyard grass), Echinochloa colona (jungle rice), and Leptochloa chinensis
  • Broadleaf Weeds: Ludwigia parviflora, Sphenoclea zeylanica, Eclipta alba, and Ammannia baccifera
  • Sedges: Cyperus difformis, Cyperus iria, and Fimbristylis miliacea
  • Application Timing: Apply post-emergence at 15 to 25 days after direct seeding or transplanting when weeds have 2 to 4 leaves

Water Management and Application Standards

Effective weed absorption requires proper water management before and after spray application.

Drain standing water from the paddy field 24 hours prior to spraying to expose target weed foliage, and re-flood 48 hours later.

  • Water Management: Ensure target weeds are not submerged under water at the time of spray application
  • Water Volume: Apply with 150 to 200 liters of water per acre using a flat-fan or floodjet nozzle at low pressure
  • Rainfastness: Rapid absorption ensures herbicidal efficacy within 1 to 2 hours of application

Official source

Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.

Central Insecticides Board & Registration Committee ↗

Related on KisanPe

Common questions

What active ingredients are in Novlect herbicide?

Novlect contains Rinskor active (florpyrauxifen-benzyl) plus cyhalofop-butyl, combining synthetic auxin and ACCase-inhibitor modes of action.

Is Novlect safe for direct-seeded rice (DSR)?

Yes, Novlect is selectively formulated for direct-seeded rice (DSR) as well as transplanted paddy fields.

Why must water be drained before applying Novlect?

Novlect works primarily through foliar absorption; draining water ensures weed leaves are fully exposed to spray droplets.

General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.

More Crop Protection & Pesticides guides

Ask Sakhi AI in your language, check live mandi prices or plan a loan with KisanPe tools.

Ask Sakhi
Download KisanPe App