Alternaria Leaf Spot (Alternaria) · tomato early blight A fungal disease of tomatoes caused by species of the genus Alternaria, primarily Alternaria linariae (syn.
Assimilates · products of photosynthesis Assimilates are organic compounds produced during photosynthesis, primarily sugars.
Auxins Auxins are one of the most important groups of plant hormones that regulate the growth and development of tomatoes.
Aroma The aroma of a tomato is a combination of volatile chemical compounds responsible for its characteristic scent and a significant portion of…
American varieties (heritage / heirloom) · old tomato varieties American heirloom varieties belong to a broader group of traditional, established varieties—also referred to as heritage varieties—that hav…
Apical dominance Apical dominance is a phenomenon in which the main shoot inhibits the growth of lateral shoots through plant hormones, primarily auxins.
Assimilate accumulation Assimilates produced during photosynthesis are transported to areas of intensive growth and to developing fruit.
Amateur Breeding Amateur breeding involves creating or selecting new tomato varieties on a small scale.
Abscisic acid (ABA) Abscissic acid is one of the most important phytohormones responsible for a plant’s response to stress.
Adventitious roots · roots on a tomato stem Adventitious roots grow from the stem, most often after it comes into contact with moist soil.
Aphids Aphids are tiny, soft-bodied, sap-sucking insects that form colonies mainly on young leaves and shoots.
Apical necrosis · tip dieback Apical necrosis refers to the death of the youngest parts of the plant, primarily the growing tip or shoot tips.
Airflow between plants · air circulation Air circulation refers to the free flow of air between plants.
Air humidity · relative humidity, RH Air humidity affects the rate of transpiration, pollination efficiency, and the development of many diseases.
Agricultural Practices · cultivation practices Agrotechnical practices include all activities performed during tomato cultivation—from preparing the planting site through the end of the …
