The Tropical Fruit Forum

co2 causes severe respiratory distress (In severe hypercapnia (generally PaCO2 greater than 10 kPa or 75 mmHg), symptomatology progresses to disorientation, panic, hyperventilation, convulsions, unconsciousness, and eventually death.).

Nitrogen or helium would be much kinder if you need to pursue this method (https://en.m.wikipedia.org/wiki/Inert_gas_asphyxiation).

This publication has a discussion of all kinds of euthanasia... http://icwdm.org/PDF's/AVMA2007report.pdf. It notes the best method depends on the animal. And this one details the co2 method.....
http://icwdm.org/wildlife/euthanasia/Carbondioxide.aspx
A whack on the head is noted as a good method if you can execute it effectively. It is also listed as not recomended.... go figure!

Here are some household items you can check your meter with...

Lemon Juice 2.0
Vinegar 2.2
Apples 3.0
Wine and Beer 4.0
Tomatoes 4.5
Milk 6.6
Pure Water 7.0
Baking Soda (Sodium Bicarbonate) 8.3
Milk of Magnesia 10.5
Ammonia 11.0
Lime (Calcium Hydroxide) 12.4

The tarp is a good idea BajaJohn and the mangos, trees, and tarp all look very cool.

Wow, I just read Just an 18 hour drive from California..... That's quite a drive...Especially in a truck... I googled and came a little less so I guess with car 14 hour 32minutes to San Diego but still quite a drive.  https://www.google.com/maps/dir/San+Diego,+California/Loreto,+Baja+California+Sur,+Mexico/@29.3683877,-118.7515569,6z/data=!3m1!4b1!4m13!4m12!1m5!1m1!1s0x80d9530fad921e4b:0xd3a21fdfd15df79!2m2!1d-117.1610838!2d32.715738!1m5!1m1!1s0x86b43b89530f87b1:0x178b5e606baccafe!2m2!1d-111.3477531!2d26.0117564   
Maybe your just a little more south Sur than Loreto that I entered....

Thanks. You are right about the drive. It is 18 hours from LaPaz which is about 5 hours South of me (26.009718,-111.350158). Still a whole lot faster than getting them from India.
The material is shade cloth which comes in handy for shading plants later in the summer too. The fruit seems perfect for eating when it falls but I'm not sure about using them in a commercial venture. They overripen quite quickly, especially the ataulfos later in the season. My Manzanas which seem similar to Hadens seem to keep much better.

I'll have to try them.

They are super hardy too. These were bare twigs cut out of a wire mesh fence and transplanted two years ago.

Try this for IDs. There are other sites too.

Those same papayas are looking much healthier now. Treatment was soap spray.

I also found this review of papaya growing conditions. A bit technical and sometimes hard to follow but it seems very comprehensive. One section suggests that papayas are extremely sensitive to overwatering because their roots need oxygen to survive. Hana, be sure you have well draining soil.

Thank-you Greenman. The soil is 50/50 compost and alluvial soil which is sandy with natural gravel. It is drip irrigated twice daily. Two of the 4 plants in the row showed no symptoms of problems and one seems to be producing nicely although nothing is ready yet.

But those terpenes are soooo gooood!

Thanks (William?). Sprayed a few times with soapy water and the emerging new leaves are looking healthy.

Thank-you for the response Tropicdude. I hope you are right with the bugs though I haven't seen too many. The Guia Cultivo has a picture of a mite infested papaya that looks exactly like my plants so maybe need to get the magnifying glass out. Anyway I gave them a spray with soap solution tonight. I'll give them some fertilizer which may help them fight whatever is ailing them. My soil tests found moderate levels for most minerals. Boron was on the higher end of normal. Phosphorus and iron were low everywhere except where I planted the papaya. There were a few high values - zinc and magnesium were super high and potassium was about 4 times normal. Manganese, copper and calcium were also slightly above normal.
I pushed and pulled at the tree trunks which seemed fairly solid. I'll dig in the soil around the trunks tomorrow to see how wet it is.
Thanks very much for the cultivation guide. It looks very informative. My Spanish isn't great but I only had to look up 2 words before I had another vote for mites.

Another consideration that the OP hinted at was the nutritional content which for fats would be essential fatty acids - Omega 3 and 6. Avocados are low in these. Olives seem to have a similar fat content with higher omega 3 and 6 content. Arguably, the omega 3 content is somewhat low but there doesn't seem to be enough academic data to understand dietary needs of either in sufficient detail.
This publication (http://scholar.google.com.mx/scholar_url?url=http://www.apjcn.org/update%255Cpdf%255C1999%255C1%255C24-31%255C24.pdf&hl=en&sa=X&scisig=AAGBfm0ftDOjrwNywOqWq9Xe7lvzIZKHyQ&nossl=1&oi=scholarr&ved=0ahUKEwi6x_7289HTAhXBv1QKHTm0BS4QgAMIGygAMAA) reports nutritional content of some Malaysian fruits.
Dubai (canarium odontophyllum -26 %), kembayau (dacryodes rostrata f. 16%), have fat content higher than avocado. Other sources claim they are high in lipids. Other fruits contain as much fat as durian - around 4%.
Another issue to consider is dry weight versus wet weight. Bananas seem high using dry weight. Very juicy fruits will show a low content when wet but a much higher content when dried. Since your body can extract the water, the dry weight may be a more useful comparison.

Some do really well, their trunks get quite fat and produce lots of large papaya fruit.

While others are less prolific and some, the ones that are never fertile and never produce fruit, I just use as compost.

This is probably because of the gender of the trees. They come in male, female and dual gender. The flowers are distinct and you need both types for fruit. As the flowers emerge the male stalks are much thinner than the flower buds whereas the female flowers are as thick as the flower buds. The trees can change gender from male to female and I'm told that trauma can trigger the change. One of the locals pushed a knife right through the trunk of my saplings when they were about 25mms diameter. There are pictures and better descriptions on the web if you search.

You can find the list of approved trees and other information at https://www.google.com.mx/url?sa=t&source=web&rct=j&url=http://www.coralsprings.org/home/showdocument%3Fid%3D9234&ved=0ahUKEwi-sYDivbvTAhWT0YMKHbuOBWoQFggaMAA&usg=AFQjCNHbm9J76-uVezS7OvDpzQUE0ZONNw&sig2=38-zwT3ju5rQqn6BFrqIQw

The manual also discusses permissible alternatives as well as "mandated care" so you can pre-empt any further citations.

Similar experiences in Santa Monica really turned me off the Orwellian inclined tree hugger buggers. I planted a few Italian Cypress across the front of my house to shade from the sun and provide some street noise mitigation in that "Arbor Day Foundation" registered City. I chose several of these narrow trees because of limited space along the front of the house. Ten years later these 30' trees were cited for violating a newly passed ordinance limiting "fence" height to 42". Just one anonymous resident in my street had complained, even suggesting that it would be cheaper to remove the trees than fight the citation. Several neighbors signed a letter in favor of the trees but the City Manager insisted they go. I then sent a letter to the City Council, explaining that the trees had existed long before the new ordinance was introduced and suggested they rethink the ordinance anyway because the trees shaded the house, lessening cooling costs in the summer and also mitigated street noise. The citation was dropped.

I guess the point really is that, regardless of the Constitution, there will always a pressure to infringe unless something pushes back.

Hi Future.

There are quite a few references to cutting the flower heads on blue agaves. Here is another - http://www.alcademics.com/2012/09/a-few-things-learned-in-the-agave-fields-in-mexico.html and this one in Spanish if you wish to translate - http://www.acamextequila.com.mx/2016/el-agave.html.
Most suggest that the farmers raising agaves for fermentation (tequila and mezcal) remove the flower stalks (desquiote) to avoid depletion of the stored sugars which are the energy source for the growing quiote (and also the source of sugar for fermentation). There is no mention of prolonging the life of the agave. They also note that propagation is done by collecting the young shoots (hijuelos) that grow around the mother plant.
The first link also refers to cutting the sharp tips off the leaves to avoid injuries.

These are blue agaves in a friend's garden.


And a few quiotes from other types of agaves.


This one had young plants sprouting from the roots of the dying mother plant.


And this one was about 15 feet high, with the tallest part of the flower showing above the bougainvillea flowers.