Freebase(0.00 / 0 votes)Rate this definition: Root nodule. Root nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.
Ayurvedic health benefits of bottle gourd/lau/ lauki: 1  Ayurveda recommends cooked lauki or bottle gourd for better digestion. It is cooling, calming, diuretic and anti-bilious (reduces bile and stops indigestion).
If the gourds are soft, leave them on the vine, even if a frost is coming. Sometimes, the first frost hardens them. Some gourds will dry out easily, while others will mold during the drying process. Since a gourd is 90% water, this mold is natureâs way of bringing moisture to the surface. If mold starts forming on a gourd, but the gourd remains hard, scrape the mold off with a dull butter knife and wipe the gourd dry.