Tag Archives: Germination

Three months on: how our seedlings are developing

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Rolman Velarde at the Motacusal nursery with one the seedlings sown in October. Note the length of the roots!

It is now three months since we sowed our first seed and most of the seedlings are now 40  cm tall and ready for planting out. Together with Terry Pennington I am planning to travel to Bolivia in a couple of weeks where with Peruvian Jaime Leon  we will assist with establishing the first Inga agroforest plot in the Amazon. The only problem is that most of the community members are deep in the forest harvesting Brazil Nuts!

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Two months on: how the seedlings are developing

It is over two months since we planted our first seeds and after a good start our seedlings are  thriving despite the unwanted attention of crickets. Some of the seedlings are now 35 cm tall and will be ready to plant out within a few weeks.

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The seedling nursery at Motacusal has done very well. The community have even prepared and planted some additional seed (Image: Rolman Velarde)

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Inga seedling nursery: the main causes of mortality

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Crickets have turned out to be a major source of mortality for our seedlings. Note that although the cricket has decapitated this seedling a secondary shoot lies in reserve ready to replace it

As Inga has never before been trialed for agroforestry in the Amazon it is important that we record the scale and different causes of mortality to inform other attempts. This is done by Rolman Velarde our chief engineer on the ground in Bolivia together with each community. The main cause of mortality so far has been the failure of ca 8% of seedlings to germinate, probably because we are still learning how to  optimize the processing of seed. Surprisingly the consistent second cause of mortality is the very neat and precise decapitation of seedling by what our communities think are crickets. Continue reading Inga seedling nursery: the main causes of mortality

Building a seedling nursery in the Amazon

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Click to view sowing. A seedling nursery at Pimpollo with two beds in which are ca 3000 planted seedlings of Inga edulis. Notice the palm fronds providing light shade

Building a seedling nursery needs a few basic requirements: ready access to water, shade, flattish ground and protection from pigs, dogs, chickens and deer. Most importantly of all it needs one or more people who can take responsibility for the nursery, water it once a day and check for damage from insects. Continue reading Building a seedling nursery in the Amazon

How to prepare Inga seeds for sowing

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Inga seeds come in several colours, the ones shown above are all from the same pod and more or less at the same stage of development

We are planning to trial three or four native species of Inga, the most common of which is the domesticated Inga edulis. Because we want to develop the approach in a way that can be easily be replicated by our partner communities we source seed locally. Inga seeds are known as recalcitrant seeds, that is they have no dormant stage as most seeds do and so cannot be stored for any length of time. So the seeds strategy is to hit the ground running and  it is not uncommon for the seeds to germinate in the pod. It also means that we need to sow the seeds within 48 hours of harvesting them.  Continue reading How to prepare Inga seeds for sowing