Its all about cost. In agriculture the volume of water used to irrigate is mind boggling. The amount of precipitated water just will not be enough for the application.
I think the best way would be targeted plant watering, but currently automated processes are not available and labour and equipment for this application are far too expensive to implement.
I heard of a local youngster, who has patented an idea in which seedlings are placed in a cardboard belt, with the correct distance for the type of seedling. At each point the seed is, it has a colour strip. SO when you place it into the ground, the colour strip is just above the ground. When watering one simply drops a few water squirts at each point. The card board strip then guides the water to the seedling. The cardboard also retains the water keeping the seed moist. The cardboard is manufactured out of biodegradable material which includes the correct nutrients for the particular seed. All printing is of the organic form and of the type to form part of the nutrients for the seed. Typical success yields varied from 60% for carrots to 100% for lettuce and spinach. The cardboard is then biodegraded into the soil where the roots of the seed feed to grow faster.
I soon as I find a link I will post it.
I think the best way would be targeted plant watering, but currently automated processes are not available and labour and equipment for this application are far too expensive to implement.
I heard of a local youngster, who has patented an idea in which seedlings are placed in a cardboard belt, with the correct distance for the type of seedling. At each point the seed is, it has a colour strip. SO when you place it into the ground, the colour strip is just above the ground. When watering one simply drops a few water squirts at each point. The card board strip then guides the water to the seedling. The cardboard also retains the water keeping the seed moist. The cardboard is manufactured out of biodegradable material which includes the correct nutrients for the particular seed. All printing is of the organic form and of the type to form part of the nutrients for the seed. Typical success yields varied from 60% for carrots to 100% for lettuce and spinach. The cardboard is then biodegraded into the soil where the roots of the seed feed to grow faster.
I soon as I find a link I will post it.
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