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Messages - agroventuresperu

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1
So that concern would bring us back to Omitox (sp?) might be Omnitox,which is also granules applied the same way and seems to work as well..
Peter

They don't have that here. We've been looking into biologicals. They don't have any products of those here either, but the government phytosanitary department published some info suggesting they have a lab producing entomopathogenic fungi now, so we contacted them and they referred us to a lab. I'm guessing they're a goverment contractor. It wasn't clear to me. Sounds like they have Beauveria bassiana, Metarhizium, and maybe even some sort of Trichoderma. We will call them soon. Hopefully they don't charge an arm and a leg. One hill on our property that measures about three hectares has sixteen different nests, so we will need a lot. The weird thing is that we have another adjacent 3-hectare hill that has zero nests. Wonder why.

I read an article too that says you can use moldy oranges (Penicillium) and wash them in water. You use the wash water applied to the entrance to the nest as well as the line of ants. Not sure the mechanism of action as Penicillium is known to produce antibiotics, but at least some Penicillium species also produce anti-fungal proteins, so I'm guessing the mechanism of action is to disrupt the Pseudonocardia bacteria on the ant cuticle, which makes the ants unable to prevent infections of their Leucoagaricus gardens. Perhaps the Penicillium also competes against the Leucoagaricus to some degree as well. Either way, it doesn't sound extremely effective (40-45% reduction of ant population over two months).

2
Tropical Fruit Discussion / IPM - Integrated Pest Management in the Tropics
« on: September 27, 2022, 08:59:01 PM »
Hey can anyone please recommend some good host plants for beneficial insects? I need something that is cheap and easy to find in Peru that I can broadcast seed all over the place to encourage beneficials like parasitic wasps. I don't know much about IPM other than most plants in the Apiaceae family have the flowers that such wasps use as their nectar source. Not sure what other plants are beneficial. I'm sure IPM in the tropics is a lot more complex than in temperate areas simply due to the shear biodiversity of tropical equatorial climates.

3
The active product was changed a couple of years ago it seems. But you can find that information on line.

Looks like it contains sulfluramid. That was what I was leaning towards using, but I did a little reading and discovered that it breaks down into a Persistent Organic Pollutant, which gives me pause. I came across a short article that gives some alternative suggestions for biologicals on page six. Not sure which formulations would be best. There are so many. Of course, I'll have to investigate if any of them are available in Peru. 

https://ipen.org/sites/default/files/documents/en_ipen-sulfuramide-factsheet-v1_10a-en.pdf

4
Tropical Fruit Discussion / Re: Mayan Fruit ID
« on: September 19, 2022, 09:08:39 PM »
Genus Parathesis?

edit: photos: https://www.inaturalist.org/taxa/185218-Parathesis/browse_photos

That looks pretty similar to the one in the video.

5
Myrex is what is used most commonly. When the ants are working you place about 3 tablespoons near the entrance of the holes where they are taking fresh leaf pieces. They will carry the Myrex in and not do well. It’s important that you get every active hole in the nest. Don’t worry about the holes they use to remove spent leaf bits. An organic product we get that works as well is called Omitox.
Peter

Do you happen to know what the active ingredient is in those products?

6
Tropical Fruit Discussion / Leaf Cutter Ants - How Do You Deal with Them?
« on: September 17, 2022, 03:52:35 PM »
Here we


use chlorpyrifos in a powdered form, which doesn't work very well. You powder their entrances and lines, and hope for the best. I even get on hands and knees and blow some of the powder down the entrance. Inevitably in a week or so, they will be back, rinse and repeat for weeks on end.
 
A biological agent would work better.

Edit: Here's a nice article from Brazil where scientists conducted an experiment with some sort of processed orange pulp as a carrier bait into which they infused sulfluramid at 0.3% concentration. Apparently the ants incorporated more of the sulfluramid pellets into their nest than even the control group (the processed orange pulp without any insecticide). That might have just been a coincidence, but the mechanism of action sounds very convincing to me.
The sulfluramid is very slow acting, so the worker ants don't perceive the compound. The ants feed this bait to their fungus and only after the bait has been incorporated into the fungus, does the sulfluramid start to affect the worker ants. The workers are not able to associate the bait as being the source of toxicity as they are able to do with more acute toxins from their environment. The article states that after three or four days the ants stop harvesting plant material from the landscape, and all individuals die 16-22 days following the treatment.
https://www.sciencedirect.com/science/article/pii/S0085562619300755

Sounds promising to me. Now I just have to see if I can find a product with this chemical composition.


7
Tropical Fruit Discussion / Re: Tropical Sources of ALA (Omega-3)
« on: September 12, 2022, 08:02:45 PM »
sacha inchi

Yeah that's a definite winner.

8
Tropical Fruit Discussion / Tropical Sources of ALA (Omega-3)
« on: September 03, 2022, 09:37:10 PM »
What are some good tropical plant sources of omega 3 fatty acids?
I assume Juglans neotropica, because it likely has the same nutritional profile as the temperate walnut species. I really don't know what else other than perhaps some annuals like tropical varieties of pumpkins.

9
Tropical Fruit Discussion / Re: Is This Papaya Flower Hermaphrodite?
« on: September 03, 2022, 09:33:35 PM »
those are female flowers

I'm asking about the picture from the first post.

10
Tropical Fruit Discussion / Re: Blueberries for the True Tropics
« on: September 01, 2022, 05:19:06 PM »
Here's an excerpt from the report:

Quote
3.3.1 Cultivares libres

‘Biloxi’: adaptado muy bien a las condiciones ambientales del Perú. No requiere un mínimo
de horas frío. Es de producción temprana. Tiene fruta de tamaño mediano a grande, de color
azul claro, muy firme, jugosa y de excelente sabor. La planta es de hábito erecto, vigorosa y
productiva. Tiene como desventaja que presenta de 5 a 10 % de descarte en la exportación y
el desprendimiento de la fruta en la cosecha no es bueno.

‘Misty’: no tiene requerimiento de horas frío, fruto de buen calibre, azul claro, firme, carnosa
y de excelente sabor. Produce fruta muy temprano. La planta tiene hábito de crecimiento
erecto y arbustivo hasta 1.8 metros. Aun cuando es una variedad autofértil tiene frutas de
calibre grande.

3.3.2 Cultivares protegidos
‘Emerald’:
muestra un gran potencial de vigorosidad y producción en el Perú. Sin
requerimientos de horas frío. La fruta es grande (18-20 mm), firme, azul claro, con excelente
sabor y una pequeña cicatriz. Tiene un alto porcentaje de autopolinización. Resistente a
Phytophthora cinnamomi. Requiere un manejo de poda, pH y conductividad eléctrica (CE)
diferente a ‘Biloxi’.

‘Ventura’:
es un arbusto alto que produce fruta grande, firme con piel más gruesa que
‘Springhigh’ y de color más claro. La planta es erecta, vigorosa, con rendimientos altos en
costa y sierra del Perú y de maduración temprana. Para su buen desarrollo no tiene
requerimientos de horas frío.

PDF link to the report: https://repositorio.lamolina.edu.pe/bitstream/handle/20.500.12996/4981/orga-porras-julian.pdf?sequence=1&isAllowed=y

11
Tropical Fruit Discussion / Blueberries for the True Tropics
« on: September 01, 2022, 04:39:18 PM »
I was looking at some plant lists of what can grow in acidic soil, and blueberry popped out at me, because the chart said its low end begins at 4.0pH, which is pretty darn acidic.

In Peru, they actually cultivate blueberries in the coastal region. They even find their way to the local markets here in Rioja. I really don't know much about the technicalities of how they're doing it. Yet, I assume that whatever cultivars they're using would probably be successful here in the jungle. We're about 5-6 degrees from the equator and blessed with acidic soil. Before we planted our property, we sent a few soil samples from various spots to the local lab. The lowest reading we got back was 4.76 and the highest 5.06

Edit: Just started reading a Peruvian thesis. Apparently the cultivar, "Biloxi" accounts for 90% of the commercial production in Peru.

12
Tropical Fruit Discussion / Re: A Mini Jack Fruit?
« on: August 22, 2022, 10:00:33 PM »
Given that the tree is only about three years old from seed and still quite small, would it be recommended to prune off any fruit if it happens to produce one?

13
Tropical Fruit Discussion / Re: A Mini Jack Fruit?
« on: August 22, 2022, 09:54:29 PM »
Well I'm certainly going to show myself as a Jackfruit neophyte.

That's a flower?  :o Where are the stamens? What is the pollinator?

Are the trees generally monoecious and self-fertile?

14
Solanum?

have to be very careful with these

What about the foliage makes you think Solanum? No one considered that when presented with the fruit photos..

15
Tropical Fruit Discussion / A Mini Jack Fruit?
« on: August 22, 2022, 05:54:23 PM »
What's going on here? This tree was sold to us labelled as "Yaca," which I assumed is the Spanish word for Jackfruit. This tree is probably only 3 years old, and is fruiting for the first time. It is the only one of our "yacas" that I've noticed already has fruit. I know Jack fruit to be large, 15lb melon-size fruits, so what is going on with this tree? I'm guessing it needed to be cross-pollinated with another tree or something along those lines. There are plenty of small fruits on the tree. Hopefully I can expect some better fruit in the future. I tasted the one in my hand, and it was basically inedible. I don't think it's an issue of the fruit still growing, because a couple of them have already ripened (turned brownish and fallen).




16
Tropical Fruit Discussion / Re: Anyone making small batch avocado oil?
« on: August 22, 2022, 05:49:57 PM »
I always thought avocado oil came from the seeds.

17
Tropical Fruit Discussion / Re: Is This Papaya Flower Hermaphrodite?
« on: August 22, 2022, 05:21:34 PM »
A picture of the female plant starting to fruit next to the "hermaphrodite". The male flowers on the male plant have not opened yet, so it looks like the female was pollinated by the hermaphrodite.

The plants are about four or five months old from seed.




18
you can go to literally any park or an abandoned lot in Florida and harvest your own pink peppercorns during the season (mind it, both BPT and the molle type are mildly toxic) from a vast number of overgrown invasiveness. They are everywhere, the state paid LOTS of money to tree cutters to get rid of them, but they are still around.
Probably the best thing for a recent transplant from other states would be to take a Master Gardener course, every county has them, here in Miami-Dade it's free, I heard that in Broward it's $400. they teach you lots of state specific (and even county-specific) research-based information, and it helps a lot to start working with nature instead of trying to recreate Illinois here in FL, to prevent common transplant mistakes trying to grow things against all odds that are not meant to be grown here and waste your time and money...  I know i've been there. Learned a LOT in the MG program,  and learned to control my persistent urge to try things from out of state...  Good luck.

Seems about half the species on earth are "invasive" species in Florida.

19
Foliage




Note the presence of the occasional pair of thorns.

20
Tropical Fruit Buy, Sell & Trade / GoFundMe Honduras
« on: August 17, 2022, 08:08:54 PM »
I came across this guy's youtube channel, and thought I should share the link to his gofundme on here, because his project sounds relevant to this forum. I don't know the guy, and I won't donate, because we are still investing a lot into our own place with no sign of profitability on the horizon anytime soon. But maybe others are interested. As you may know, many tropical ecosystems are being degraded at an alarming rate. This is one project that should serve as a good example for the region to heal the land:
https://www.gofundme.com/f/regenerating-degraded-land-in-honduras?utm_campaign=p_lico+share-sheet&utm_medium=copy_link&utm_source=customer

21
I am a big fan of the pink peppercorn they produce. Additionally, Its a fast-growing and relatively sturdy tree that looks similar to the weeping willows I used to have at home in Illinois, which I do not see many of down in South FL. Probably a pretty niche request but glad to have gotten some cuttings to propagate. Hope that answers the question!

Those trees are allelopathic. I'm sure it's just a matter of time before someone from California chimes in saying they will send you a garbage-bag full of sweepings from their driveway. Should be enough for a few thousand seeds. Back in Santa Barbara, our neighbors had one that overhang our Hass Avocado. It finally got too tangled with their telephone wires, so they decided to cut it down. Our family practically threw a party. The following year, the stunted Hass had an explosion of growth like never before. In our neighborhood the more noxious S. terebinthifolius was a really common street tree. As you know, both are poisonous, but the S. terebinthifolius had a stronger scent and I remember removing some once during a landscaping job and getting a splitting headache from smelling those trimmings.

22
agrovent, small world how about that that little guy has had a hard life it's struggled ever since I put in ground, it's green up a put out a few frongs then a few die back so, stays same size so far. 8)

It probably craves consistently hot weather.

23
Why what?

Not trying to step on anyone's toes here, but I'm genuinely curious why you would want that plant?

24
SEEDS that are currently available:

1. Artocarpus odoratissimus (Price $3,50 usd each seed).
2. Artocarpus odoratissimus ssp. (Price $3,50 usd each seed).
3. Baccaurea angulata (Price: $17.50 USD one packet contains 10 seeds).
4. Bunchosia glandulifera (Price $3 usd each seed).
5. Dracontomelon dao (Price $2,50 usd each seed).
6. Fibraurea tinctoria (Price $3 usd each seed).
7. Garcinia forbesii (Price $3 usd each seed).
8. Garcinia hombroniana (Price $2,75 usd each seed).
9. Garcinia parvifolia (Price $2 usd each seed).
10. Garcinia sp. (Price $3 usd each seed).
11. Litsea garciae (Price $3 usd each seed).
12. Manilkara kauki (Price $2 usd each seed).
13. Phytocrene macrophylla (Price $3,50 usd each seed)


Can you ship to South America?

25
Tropical Fruit Buy, Sell & Trade / Re: New rare fruit seeds available
« on: August 14, 2022, 12:08:00 PM »
Some of the new seeds I've recently added to my website Raindanceseeds.com

Rubus neomexicanus
Screwbean mesquite
Passiflora arida (baja desert passionfruit)
Passiflora tarminiana
Mysore blue raspberry
Ribes sanguinium
Ribes aureum





















Passiflora arida. I'd really like to see its native habitat. Is the last photo a species of Ribes? Where is it native too?

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