Tomatoes, peppers, apples, eggplants, and watermelon
Blossom end rot is a name given for a disfiguration in the fruits of several plants and is a common physiological disorder. It starts as a small, wet looking spot at the blossom end of the fruit. Over time, it increases the surface area it covers, eventually leading the part of the fruit affected to darken with brown or black color and become stiff. It is not a disease nor is it a result of insect activity.
Blossom end rot happens when something goes wrong in the growth process. Part of the cells within the fruit stop functioning, turn black, harden, and eventually die. The occurrence is usually blamed on a shortage of calcium, but things are a bit more complex. While it is true that fruits that exhibit blossom end rot symptoms are found to be low on calcium, soil calcium shortage is not always the cause for this disorder. The problem is more often related to the mobility and availability of calcium inside the plant.
Blossom end rot can occur at any time, but tends to be more common at the beginning of the growth stage, appearing on the first fruits of the season.
अधिकतर उत्पादकों की समय, स्थिति में हस्तक्षेप की आवश्यकता नहीं होती है। अवांछित हस्तक्षेप से प्राकृतिक रूप से दृश्य गायब हो सकता है और कालांतर में ऋतु में दिखाई नहीं देगी।
यद्यपि, कभी-कभी मिट्टी में वास्तविक कैल्शियम की कमी हो सकती है। उस स्थिति में, कैल्शियम के साथ उर्वरण करने से यह कमी कम हो सकती है।
*Names marked in red are considered to be highly poisonous to beneficial insects.
*Names marked in green are considered to be organic and IPM (integrated pest management) compatible.