Increasing Farmer Food Security and Incomes: Grain Storage Solutions
Phase One

We are testing grain storage methods to develop a simple solution to prevent crop losses due to weevil and rodent infestation.

Hermetic Bags/Airtight Drums
Grain Storage Solutions
  • Protects crops from weevils and rats 
  • Airtight to prevent moisture damage
  • Affordable solutions for smallholder farmers
Airtight grain storage drums

This project has been completed.
Thank you to all who contributed.


Smallholder farmers in Indonesia typically sell raw (unprocessed) crops at very low prices - earning very little income. Many farmers are much poorer than the rest of the population and ironically face food shortages.

Two of the major food crops in East Nusa Tenggara province (NTT) are sorghum and maize. Farmers lose between 30-70% of stored grain because their traditional storage methods do not provide adequate protection against weevils or rodents. These losses are a major contributor to food insecurity and a hunger period across the province, especially during musim paceklik (off season). If farmers didn’t lose such a large portion of grain, they would have sufficient food to eat and sell in order to earn an adequate income.

What we want to test: 

There is a simple solution to post-harvest crop losses, involving the usage of airtight drums, or sealed bags. Grain stored in such airtight containers can be kept for a year or more; rodents cannot get into the drums and weevils cannot live or reproduce without oxygen. Thus with basic training on correct usage, this simple technology can virtually eliminate all post-harvest losses.

We will test three methods of storage, each using 50kg of sorghum.

  1. Traditional method (in plastic woven bag)
  2. Airtight plastic drum
  3. Hermetic storage plastic bag (Kantong Semar) inside plastic woven bag
What will we measure: 

Kopernik’s Depot Desa team will check on the status of the grain every month for six months. Each month we will take a sample of sorghum from each container and look for the following:

  • Number of weevils - dead
  • Number of weevils - alive
  • Moisture content

Results will be analysed and documented by the team. If the results from the experimentation phase are promising, Kopernik intends to develop the solution on a larger scale.

Who are we working with: 

We are helping traditional grain farmers in Larantuka, East Nusa Tenggara, Indonesia, who currently store their crops in a lumbung, resulting in crop losses. This project is part of Kopernik’s new initiative - the Village Depot or Depot Desa in Indonesian. This is a centralised agro-processing facility where smallholder farmers can access simple technologies to add value to their crops and increase food security and income.

Project timeframe: 
Six months
Location :
Project Costs: 
Cost TypeCost DescriptionCost Unit AmountCost QuantityCost Amount
Crops - Sorghum
Cost of crops
Technology - Traditional Grain Storage Bag
Cost of technology (includes shipping, duty, clearance)
Technology - Airtight Plastic Drum
Cost of technology (includes shipping, duty, clearance)
Technology - Hermatic Storage Bags
Cost of technology (includes shipping, duty, clearance)
Moisture meter
Cost of technology (includes shipping, duty, clearance)
Project management
Data collection and documentation
Project monitoring and evaluation
Payment processing fee
3.3% average based on the average size of project and average donation amount
Administration fee
Covers due diligence, monitoring, printing & administration related costs
Fluctuations in currency exchange rates and shipping costs may change the final quantity of technologies we ship for this project.

A huge Kopernik thank you to the 22 people who pitched in $2,952.65