Slow death in durian seedlings when grown in the field can be caused by many factors.The basic principle is that there is no SOURCE and SINK connection meaning that the continuity of the flow is stop. Source is referred to upper part of the plants that include leaves , shoots, twigs, upper stem (above ground)and branches while sink refers to roots, root hair hairs (below in the ground). Both source and sink must be harmonious . Either source or sink is affected , the plants will will be disturbed.
Upper portion of plants can be affected by diseases, insect , mechanical damage , limb breakage. The lower portion i.e. roots will also be affected by disease, insects, nutrient , water deficit etc. If one of these parts are affected then it will affect others in the plants. Meaning that growth will be affected which leads to plant injury, wilting, stress and death.
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| Sometimes it is very tricky to know what may cause death to the plants as shown . The leave drops slowly andn dry finally dies, |
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| Examine the roots where disease or something else might disrupt the uptake of water and nutrient |
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| Leaves fall and plants become dry |
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