Calendar - Does sighting the barley start the year?

This subject has been coming up lately and these are my notes about using the barley to start the year...

Using the barley to start the year...I can't find any verses that state barley was given as a sign. Barley will be found in the month of Aviv just as corn is harvested just before the FoT. But as for the signs to determine the calendar, the bible specifically says that the moon and sun are a sign for the seasons, days and years...

Gen 1:14 And Elohim said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:

Jer 31:35 Thus saith YHWH, which giveth the sun for a light by day, and the ordinances of the moon and of the stars for a light by night, which divideth the sea when the waves thereof roar; YHWH of hosts is his name:

Psa 104:19 He appointed the moon for seasons: the sun knoweth his going down.

Using the barley to start a year will cause a couple issues such as:

1. in the Sabbath and Jubilee year when no barley is to be planted.
2. And during the wandering in the desert for 40 years, the Israelites kept a calendar but they were not growing barley in the desert while they wandered.
3. Also Noah was able to keep the calendar while on the Ark...there was no ground...hence no barley.

There are also other verses that speak of the end of the year and it referenced to the position of the sun, such as this...

Exo 34:22 And thou shalt observe the feast of weeks, of the firstfruits of wheat harvest, and the feast of ingathering at the year's end.

year's end here references the sun turning back, revolution, it places the FoT after the autumnal equilux and confirms that the sun not a plant is used to mark the time of year.