Spinich Leafminer- Identification and Management
The adult fly appears in early to mid- May after overwintering in the soil as pupae. It is a about 5 mm long and are gray in color. The adults can be seen flying near the ground between the plants. The females deposit eggs singly or in rows of two to five side by side on the underside of the leaves. In as little as three days but more commonly in four to six days the tiny legless, white to yellowish maggots hatch from the eggs and work their way into the leaf tissue. The maggots feed between the upper and lower leaf surfaces of the host plants mining out the tissue in between. It is not unusual for several larvae to be in the same leaf. As the maggot grows and continues to feed, the mines, which are at first thread-like, become blotch-like and are easily seen on the infected leaves. The larvae are full-grown in 7 to 16 days when they drop to the ground and burrow a few inches into the soil to pupate. Two to four weeks later the adult flies emerge and will soon lay eggs for another generation. In New York you can expect three to four generations each year.
Management- a preventive spray schedule beginning when the spinach is two true leaves and repeated every 7 days. Remove wild hosts like lambsquarter, nightshades, chickweed, and plantain. Deep plowing in the spring can reduce the overwintering population by burying existing pupae. In smaller stands, infected leaves can be picked before the maggots drop to the ground. Removing and destroying these infected leaves can lessen the leafminer pressure
-Ray Range
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Upcoming Events
Cover Crop Field Meeting
October 21, 2025 : Cover Crop Field Meeting
Willsboro, NY
Thinking about upping your farm's cover cropping game? New technology for seeding and crop tracking, research-driven recommendations for high tunnel cover cropping, cold tolerant varieties for North Country climates, and farmer expertise will be shared at this field event.
New York State Agritourism Conference
November 10 - November 11, 2025 : New York State Agritourism Conference
Saratoga Springs, NY
The first-ever New York State Agritourism Conference, hosted by the CCE Agritourism Program Work Team, is designed to support farms in growing successful visitor experiences. This statewide gathering will feature expert-led sessions, peer networking, and practical tools to help farms expand direct sales, education, hospitality, and entertainment offerings.
Date:
- November 10: A full day of educational sessions targeted at beginning or experienced agritourism operators.
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ASL 104sp Seleccion y organizacion del personal (Staffing and Organizing Your Team) taught in Spanish
November 12, 2025 : ASL 104sp Selección y organización del personal (Staffing and Organizing Your Team) in Spanish
ASL104-SP: Selección y organización del personal (Staffing and Organizing Your Team - impartido en español) ¡Inscripciones abiertas!
En este curso identificamos cómo escribir descripciones de puestos disponibles en el trabajo para atraer a los mejores candidatos. Aprenderá a encontrar empleados con un perfil deseado, cómo entrevistar y seleccionar a las personas adecuadas. Descubrirá cómo completar la documentación de nuevos empleados, la autorización de empleo y la contratación de personal (on-boarding): es decir, cómo efectivamente incorporar nuevos empleados al rancho en una manera exitosa y productiva.
Los temas incluyen:
- Convertirse en un lugar de trabajar preferido
- Planear cuántos y qué trabajadores se necesitan
- Diseñar descripciones de trabajos para un mejor reclutamiento
- Cómo evitar favoritismos y discriminación
- Cómo buscar y entrevistar los nuevos trabajadores
- Cómo decidir a quién contratar
- Y cómo dar una buena bienvenida al nuevo trabajador
Inicio del curso: miércoles, 12 de noviembre de 2025
Discusiones en vivo por Zoom: Cada martes 18 de noviembre - 23 de diciembre, de 1:00 a 2:00 p.m. (hora del Este)