What is Likui Levana?
Most crops receive their energy to grow and be bountiful from the sun’s energy. In Dvarim 33:14 ????? ??? ?????”from the sweetest grains of the moons”, we, therefore, see that there are some plants that achieve quality with help of the moon’s energy, as well.
Likui Chamma or Levana refers to an interference in these energies perhaps through dust or clouds in Earth’s atmosphere when this energy is needed the most in a plat’s life. (Or, perhaps, solar flares and sunspots either during the day or during a moonlit night.)
It has nothing to do with eclipses which were predictable events even in ancient times.