Search found 9 matches

by bta
Mon Aug 20, 2007 11:53 pm
Forum: Botany Discussion
Topic: Prune apical meristem and lower branches to increase yield?
Replies: 0
Views: 2967

Prune apical meristem and lower branches to increase yield?

Hello, I was having conversation with a friend who shared a different opinion from my own. I was hoping some one could provide information in regards to pruning and yield. We both agreed that pruning the apical meristem (a.k.a "topping") usually increases yield due to the diffusion of auxi...
by bta
Sat Jun 16, 2007 6:46 am
Forum: Botany Discussion
Topic: Method/tool to find PPF?...Please help
Replies: 1
Views: 2928

Ok, I guess the mathematical solution is out, or am I incorrect?: (from m) Quote: Since it is nearly impossible to find the Photosynthetic Photon Flux Density ratings of the bulbs can we simply use lumen/Watt ratings of the bulbs for having a general idea of light intensity of the bulbs? Is there an...
by bta
Sat Jun 16, 2007 6:19 am
Forum: Botany Discussion
Topic: Method/tool to find PPF?...Please help
Replies: 1
Views: 2928

Method/tool to find PPF?...Please help

Hi, I need a method to find the ppf of HID light (MH and HPS). I would like to find a relatively inexpensive quantum meter that is accurate in PAR range, a layman's mathematical solution, etc. I was going to buy the basic Apogee quantum meter ($170.00) but it doesn't measure 650-700nm range and weig...
by bta
Sat Jun 09, 2007 7:25 am
Forum: Botany Discussion
Topic: Another new blue light receptor...?
Replies: 2
Views: 3695

by bta
Sat Jun 09, 2007 7:24 am
Forum: Botany Discussion
Topic: Another new blue light receptor...?
Replies: 2
Views: 3695

Another new blue light receptor...?

Hi, Here is an abstract from a very interesting paper regarding the action spectrum (hint: it's blue) for HID and mRNA accumulation (via. Lhl4 gene) in green alga. I wonder if the receptor they are referring to is one of the known ones? I had to copy/paste as I do not have 5 posts and can not post a...
by bta
Fri Jun 08, 2007 6:10 pm
Forum: Botany Discussion
Topic: Benifits of Blue & Red: Action/Absorption Spectrum, etc
Replies: 4
Views: 12542

just updated a few items: a) Blue light receptors stimulate proton pumps that drive protons out of the cells which starts off a whole set of reactions; electochemical gradients, osmosis of water, etc. b) Red light enables the conversion of starch into malate which keeps the stomata open. c) The most...
by bta
Fri Jun 08, 2007 7:34 am
Forum: Botany Discussion
Topic: Benifits of Blue & Red: Action/Absorption Spectrum, etc
Replies: 4
Views: 12542

Benifits of Blue & Red: Action/Absorption Spectrum, etc

Hello, I have read a lot of good info regarding the benefits of the blue Action Spectrum. Unfortunality, most of the info is spread across a few threads, forums, web-pages, etc, etc. So I thought it would be a good idea to catalog the effects the blue spectrum light has on plants. My goal is to list...
by bta
Fri Jun 08, 2007 5:16 am
Forum: Botany Discussion
Topic: Hot topic for Botany - Possible new blue light receptor
Replies: 1
Views: 5356

Hi,

Not to sound too ignorant but what does this mean in real world and semi-layman terms? Does ZTL create receptors like cryptocrome? Or is ZTL part of the receptor itself?

cheers
by bta
Thu Jun 07, 2007 7:27 pm
Forum: Botany Discussion
Topic: BAP, brassinolide, triacontanol, Amino, kelp foliar question
Replies: 15
Views: 40112

BAP, brassinolide, triacontanol, Amino, kelp foliar question

Good afternoon, This is my first post here but I have been 'lurking' for a while, great site. I want to make a pre-mixed foliar solution in concentrate or 'ready-to-use' form which includes Ascophyllum Nodusum (kelp) liquid extract as a 'base'. I am making this for a few friends who like the idea of...