Sunday, June 9, 2013

Update on compost system

A new compost pile was started 3 weeks ago with donkey and goat bedding. Some dry bedding was added on top a week ago. Today, I measured the temperature inside the pile: 100F. Not bad. This means the forced air system appears to be working.

Saturday, March 30, 2013

Corn starts

I planted corn starts a week ago and put them under a row cover. Despite a few frosty nights, they survived and are growing. So, We'll plant another bed of vegetables today.

With a row cover, mid-march seems to be a good planting date.

Baby Goats!

Our baby Nigoras were born yesterday afternoon. they spent the night in the barn, with a small electric heater keeping them warm. They are doing well today. The mother needs to be sheared.

Thursday, February 14, 2013

Grow Light Informations

Photosynthesis does not use all the Sun's light, but only the extremes of the visible spectrum, blue and red. The center of the spectrum, green, is reflected by the plants, which gives them their color. The blue wavelength promoted leaf growth, while the red, stem growth. For starts, leaf growth is what matters, since the seedlings are exhausting the seed food reserve to grow leaves and produce photosynthesis.
The light spectrum of the grow light is therefore important. I made some research on the lights I bough.

There isn't enough energy in the short wavelengths. The grow light setup currently has 2 tubes, and will soon have 6 tubes in a 3x2 setup, with ~ 2-3 inches separation between each fixture. That gap is enough to fit a line of blue LEDs in between and gives a useful boost.

Here are the full specifications on the Ecolux lights used in my setup:
  • Part#=49893
  • Initial lumens=1900
  • Color temperature=3100K
  • Color rendering index=90

Next step will be the design of the LED lights.

Sunday, February 10, 2013

Grow Light Setup, Finally!

Today I got a grow light setup installed in the garage. I used two GE Ecolux T12 tubes, and a 4Ft 2-light shop light fixture. It is barely wide enough for the trays, and I may have to add a second fixture. The shelf is wide enough to set the trays lengthwise, so by setting three 2-light fixtures (6 tubes), I could have 4 to 5 trays in there. Each tube is 40W, so that would suck 240W. We will see how the single fixture works with those spindly beans first, if they survive, then I may go for a 6-tube setup. For now I use a timer, and will keep the lights on during the day, but with a 6-light fixture, I would use a light sensor to turn the lights off when daylight is strong enough.
This is my first grow light setup, and it is exciting!

Looking online in the "medicinal" industry, I see numbers between 1500 and 3000 lumens/sqft for indoor only plants. In this setup, the starts are next to a South facing window, and get a boost in lumen and spectrum a few hours every day.
A seedling tray is 1.4sqft, and therefore needs between 2000 and 4000 lumens.
Each fluorescent tube is 1900 lumens. The growing setup must have between 1 and 2 tubes per tray. The current setup is on the low side. A setup with 3 fixtures, 6 tubes, for 4 trays, would be adequate.
If the current setup gives satisfying results, then I will install a 6-tube setup with 4 trays.

Wednesday, January 23, 2013

Goat Health & Hay

We just passed through a tough cold spell for the goats, with the snow covering the pasture for more than a week. This is the condition that made the goats sick last winter. This time, one of our goats got a mild case of diarrhea again (the Nubian), but seems to be OK. The goats are liking the home made hay, but I did not harvest enough of it. I would need two to three time the amount I collected. Still, some money has been saved harvesting that hay. As the weather is warming, the goats should need less hay soon. Good because I am running out.

Sunday, January 6, 2013

Another Loss in the Corral

While feeding the chickens this morning, I found a dead hen. Since the body was complete, I doubt it was killed by a predator. This is the second hen to dies this winter. Those hens are 3 years old, so this may not be too surprising.