How to Identify and Control Root Aphids on Cannabis Plants
Professor DeBacco
Rice Root Aphids Description
Rice root aphid (Rhopalosiphum rufiabdominalis) is a dark olive-green insect with a generally round body form.
Wingless stages develop on roots and they survive on plants.
Winged stages periodically emerge from soil to fly to new plants
Wide host range including indoor cannabis plants, even when hydroponically grown

Root Aphids Identification of Plant Damage
At 730F, an optimal temperature, rice root aphid populations can double every 1.6 days.
Managing Root Aphids
Root aphid management is especially challenging in organic systems.
A study was conducted (in celery) to evaluate the effectiveness of certain products applied via a drip irrigation drench.
Evaluations were…
Pre-treatment
Post I Application (13 days after treatment)
Post II Application (10 days after the first treatment)
Results
Microbial pesticides especially in combination with botanical pesticides can play a significant role in pest management. Understanding the modes of actions of different options and using the right combinations is critical in pest management decisions.







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