Diseases during the fruiting stage in tomato crops скачать в хорошем качестве

Diseases during the fruiting stage in tomato crops

During the fruiting stage, your tomato plants enter the crucial period of growth and development, promising a rewarding harvest. However, this crucial phase is also susceptible to various diseases that can hinder the health and productivity of your tomato crops. In this article, we will explore some common diseases that can affect your tomato plants during the fruiting stage and provide effective treatments to ensure a healthy and successful tomato crop.  Common diseases that could affect your tomato crops during the fruiting stage include:  Fusarium Wilt Causal Organism: Fusarium oxysporum f.sp. lycopersici   Symptoms: Yellowing of older leaves, wilting, browning, and defoliation.  Dark brown streaks of vascular tissues can be observed when cutting an infected stem at the base.   This disease stunts growth, hampers fruit development, and often leads to the premature death of the plants.  Control Measures: Uproot the infected wilt plants from the tomato field to prevent the further spread of the disease.  Avoid water stagnation and limit the use of nitrogenous fertilizers.  Use Multiplex Nisagra Bio Fungicide (Trichoderma viride 5% L.F) at the rate of 2 kg per acre.   Drench the affected area with Spectrum Fungicide (Azoxystrobin 11% + Tebuconazole 18.3 % SC) at the rate of 300 ml per acre. (Or)  Use Infinito Fungicide (Fluopicolide 5.56% + Propamocarb hydrochloride 55.6% SC) at the rate of 2 ml per liter of water.  Early Blight  Causal Organism: Alternaria solani  Symptoms: It appears as small black lesions on the older leaves, which gradually turn yellow and form leaf spots from the bottom of the leaves.   These spots may enlarge and exhibit concentric rings in a bull eye pattern, accompanied by a yellow halo in both foliage and fruits.  Control Measures: Use Revus Fungicide (Mandipropamid 23.4% SC) at the rate of 1.6 ml per liter of water. (Or)  Apply Antracol Fungicide (Propineb 70% WP) at the rate of 2 gm per liter of water. (Or)  Use Curzate Fungicide (Cymoxanil 8% + Mancozeb 64% WP) at the rate of 2 gm per liter of water.  Late Blight: Causal Organism: Phytopthora infestans  Symptoms: It is characterized by small water-soaked regions, which quickly develop into purple-brown and oily blotches.  Greyish-white mycelial growth can be observed on the undersides of the infected leaves, surrounding the blotches.  It spreads rapidly, affecting petioles, young stems, and even fruits, resulting in significant losses in production.  Control Measures: Use Acrobat Complete Fungicide (Metiram 44% + Dimethomorph 9% WG) at the rate of 2 gm per liter of water. (Or)  Use Sectin Fungicide (Fenamidone 10% and Mancozeb 50% WG) at the rate of 2 gm per liter of water. (Or)  Use Zampro (Ametoctradin 27% + Dimethomorph 20.27%) at the rate of 2 gm per liter of water.   Bacterial Leaf Spot: Causal Organism: Xanthomonas campestris pv. vesicatoria   Symptoms: It is characterized by the appearance of black or dark brown leaf spots with yellow halo on the fruits, which eventually turn from yellow or light green.  Larger leaf blotches, particularly on the leaf margins can be seen.  This disease can also affect twigs and green fruits.  Control Measures: Use Shamrock Overseas Borogold (Colloidal Nano Silver Technology) at the rate of 1.5 to 2 gm per liter of water. (Or)  Use Conika Fungicide (Kasugamycin 5% + Copper Oxychloride 45% WP) at the rate of 2 gm per liter of water. (Or)  Use Amistar Top Fungicide (Azoxystrobin 18.2% + Difenoconazole 11.4% SC) at the rate of 1.2 to 1.5 ml per liter of water.  Tomato Spotted Wilt Disease Causal Organism: Tomato spotted wilt virus  Vector: Thrips (Thrips tabaci, Frankliniella  schultzii, Scirtothrips dorsali)  Symptoms: Bronzing of the upper surface of the younger leaves, which finally turns into necrotic spots.  Downward cupping of the leaves and tip of the shoots show dieback symptoms.  Spots with concentric circles or circular markings can be seen on fruits.  On ripe fruit, chlorotic spots and blotches appear in alternate bands of red and yellow, often with concentric rings.   Control Measures: There is no treatment for the plants infected with this virus. To prevent the spread of TSWV, it is crucial to monitor for thrips and tomato spotted wilt symptoms from the seedling stage and promptly remove and destroy infected plants. Additionally, the removal of weeds in the tomato field is recommended as they act as alternate hosts for thrips.