Multiplex Nisarga or Biocure - F OR Alderm OR Trimax 10 gm if powder and 2 mL if liquid in 1 liter of water spray. Some of the biopesticides that may be used to manage the disease are as follows T richoderma viridae, Bacillus subtilis, Pseudomonas fluorescensare some of the biological agents which may be sprayed to manage the GSB disease. One can plan for the management measures like sprays and other things.Ī. Regular checking or scouting for the disease sign and symptoms will definitely help detect early, prevent the spread and cure the disease sooner avoiding major crop loss. Minimum of two and half to three years rotation is required to nullify the stem blight disease infection in the field. Crop rotation with non-hosts and different crops of different families have to grown to stop and eradicate the gummy stem blight in the plot. Growing continuously the cucurbit crops from same family or crops which primary hosts of gummy stem blight disease have to be stopped to stop the disease spread and development.
#BEST FUNGICIDE FOR GUMMY STEM BLIGHT FREE#
Care need to be taken to remove the weeds and make the plot free from gummy stem blight disease. The weeds may be members of the same cucurbit family and they may carry disease. Weeds are another primary source of disease. The debris may be burnt to avoid further multiplication, spread and development. Hence the discarding of the debris properly is much important to keep a break to the disease. If the previous cucurbit was infected one than the chances of developing disease this season is for sure. Selecting and transplanting even healthy-looking plants form the infected lot or nursery may have chances of disease occurrence at the later crop stages.Ĭrop residues of the previous cucurbit crop may carry the gummy stem blight disease infections which can be spread to present of future crop. Seedlings have to be inspected to the possible signs and symptoms of the disease and can take care to avoid the occurrence and the spread of the disease. Gummy stem blight disease is also infecting the cucurbits at seedling stage and symptoms may be evident, selecting the good quality disease free seedlings to transplant will help in reducing occurring and spread of the disease. Seed treatment may be required for non-pre-treated seeds to avoid the infections of GSB. Selection of good quality seeds from reputed seed producers may be the better option and can reduce the occurrence of the disease. During selection and sowing of the seeds is more important. Seed is one of the sources of gummy stem blight disease occurrence.
IMPORTANT STRATEGIES FOR MANAGING GUMMY STEM BLIGHT (GSB) / BLACK ROT OF CUCURBIT CROPS. The anthracnose infected plants will not show blighting and gummy liquid oozing out. Anthracnose leaf spots are usually smaller than the GSB spots and are round where anthracnose spots are distinctly angular. Note: Many times, Gummy stem blight (GSB) is confused with anthracnose while comparing with symptoms.
Gummy stem blight is visible only on the over ground plant parts of cucurbits like leaves, petioles, vines, stems, peduncles, fruits and even seeds and tendrils.More importantly the fungus is more active and aggressive in moist and cooler weather conditions. This fungus Didymella bryoniae have ability to survive on seeds, weeds and the debris of previous crops which would be infected. The fungus Didymella bryoniae is the culprit and causal organism of Gummy stem blight disease. Gummy stem blight is so deadly that it can spread very fast and can cause significant crop damage and loss. The infected plants show different symptoms may be based on the intensity of infection. The plants of the infected crop show the symptoms of oozing out the gummy substance from the stems, sometimes from the growing the branches with splitting. Under favourable conditions for disease development, gummy stem blight can infect at stage of the plant growth and crop stages. This disease is infecting cucumber, ridge gourd, bottle gourd, watermelon, muskmelon crops. Gummy Stem Blight has become one of the important and deadly disease of cucurbit crops.
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