UA-37223125-1 37223125 erick bip: Organic hydroponics, why not?

Tuesday, July 24, 2012

Organic hydroponics, why not?

Organic Greenhouse horticulture is defined by The International Society for Horticultural Science (ISHS) as the organic production of horticultural crops (vegetables, ornamental plants and fruits) using input derived only from natural sources, non-chemical, with the management of the microclimate inside the greenhouse.Around the world, most of the greenhouse, or often called house plants, keep using the land as a growing medium, but in developed countries, such as in Europe, North America and Australia, greenhouse hydroponics system is dominating.In developed countries early in 1960, begun to move into the greenhouse vegetable production, which combined with the increase in greenhouse environment control, this has resulted in many Promised productivity improvements compared to the system ground-based media. The data that I can, have shown that over 50 years of productivity in the greenhouse microclimate control in it has increased 6.4% per year. In fact, 60 years ago in greenhouse tomato growers is best to reach 20 kg/M2/tahun, and now the best farmers can harvest 80 kg/M2/tahun.Achieve such productivity by it to the ground is very difficult, thus the effort required for organic hydroponic greenhouse, will continue to require an increase in production if organic producers will remain in the business of organic fruits and vegetables.Control environment is the source of the most profitable farming to intensive farming, and can allow the achievement of the highest possible productivity. Improve the condition of the root environment is an important part of the availability of plants with the optimal environment, and the balance between moisture, temperature, aeration and nutrient availability in soil is not an easy medium to provide the plant with an ideal combination. When the ideal content, aeration tends to be inadequate, and when aeration is ideal then the humidity tends to be a limiting factor. For this reason the majority of farmers, producers tend plants in the greenhouse to the use of media (such as rockwool, husk charcoal, cocopeat, coir, and peat) that has a better environmental balance of the root,Plant growth in greenhouses with soil media often creates a big problem, not only in terms of moisture, and aeration, but also in terms of nutrition. For example, for fruit vegetables (tomato, cucumber and melon), the farmer must require a considerable amount of nitrogen, phosphorus and potassium if they want to be a productive plant. This amount far exceeds the maximum levels of nutrients that can be implemented according to standards in some countries, namely, P: 170 kg / ha / year and P: 200 kg / ha / year.It should have serious implications for long-term sustainability of the agricultural industry of organic soil-based greenhouse. Better a simple choice is to accept a significant reduction in productivity. Pest and disease control in soil could be another problem with the production of organic crops in the greenhouse, where crop rotation is very limited choice. Much of the land bekaitan disease can be controlled by seed terhadapa disease resistance and to date, nematode control used is steam sterilize the soil. This action is (apparently) acceptable to organic production, although it seems completely against the principles of organic, because almost all micro-organisms are all killed.Thus, one possible solution is to use hydroponics, to ensure that plants receive adequate nutrition, combined with re-circulating system. It would be easy to achieve increased production, even under regulations IFOAM (International Federation of Organic Agriculture Movements) now, using only natural nutrients (non-chemical), such as seaweed, fish, manure, etc., to provide nutrients of plants.Ultimately, the choice of which to date can be applied is the aquaponic system, where waste from the fish altered by bacteria in the bio-filter into soluble nutrients in the plant, which is then supplied to the roots of plants in re-circulating system.Aquaponic can best be defined as the combination of aquaculture and hydroponics. In aquaponic fish and plants produced in a single integrated system, in which the fish waste provides a food source for plants and plants provide a natural in the water where the fish live. The key factor is the bio-filter, between the fish and plants. It consists of bacteria that convert fish waste into soluble nutrients for plant roots. Conversion is the key to ammonia (toxic to fish), which convert nitrite to nitrate. Aquaponic is probably most applicable to the sustainability of organic hydroponics.In my view the key factor for the future of agriculture must be sustainable. Organic ground-based systems in the greenhouse, in fact not sustainable, while organic hydroponic system more sustainable.

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