Monday, August 25, 2008

Urban Farming

I hope you people would have heard this word.. Urban farming. Obviously, it's about doing farming in, or around the urban area. You may think that with the increasing concrete structures in the cities how will it be possible. However, believe it or not, people are doing this practice very successfully.
Especially, many Non-government and Non-profit organizations are involving in the urban farming worldwide and are making local shelters healthy and wealthy. If you ask me what they are doing? it's very simple. Just growing food locally with the use of bio-intensive method. (Producing maximum food from the minimal area by using waste materials is called bio-intensive method). The area may be your roof, yard or a common land. The organizations just gather people in the particular community first. Then, they acquire a common land with all legal permissions and start doing farming by using unused land for farming and waste-water for irrigation.

By using waste-water and unused land, it paves way to sustainable production of food. Besides, urban farming ensures the food security by increasing the amount of available food for urban dwellers and also by making food available as fresh it ensures the food safety. Urban farming simply make the environment healthy with the improvement in the quality of air etc.

How to make people wealthy with Urban farming?

Most of the urban people in the low-income scale are spending large part of their income for food. By making them involved in Urban farming, they can be self-sufficient in their house-hold food need and at the same time, they can also increase their income level by selling the surplus food to the local market. Thus, we can make them wealthy.

Other Benefits?

Urban farming may serve as the one of solutions for the on-going food crisis. By producing and marketing food locally, we can cut short the transportation cost. Ultimately, it results in the energy efficiency.Also, we aren't in need of much preservatives as the food is going to be distributed locally in urban farming. Thus, it also seem to be more safe to consume.

Any difficulties in initiating?

Yes.. Of course. We have to get a common land in case of community gardening with fulfilling all legal requirements. You see it may have some sort of uncertainty that we may lose the land at any time due to some legal problems. Also, in handling the waste-water and unused land, we have to take more care to make them suitable for cultivation.

Role of Agricultural Engineering?

Agricultural Engineering plays an important role here. Micro Irrigation would be the best way of irrigating the field of your roof or yard. And, in some areas, Green house has been successfully used for the cultivation of food crops. For doing small-scale farming like urban farming, we are in need of handy equipment to do farming efficiently. In waste-water treatment and soil conservation, obviously, Agrl.Engg has the leading role. Thus, Agricultural Engineering has its own contribution to the successfully practiced Urban Farming.

If you have any doubts or comments, feel free to contact me at me.mgrg@rediffmail.com

Gen R

Monday, March 17, 2008

Psychrometry

What is Psychrometry?
Psychrometry is the study of physical properties of air.
Just like any food material or biological material, that has got physical properties like size, shape, mass, volume, density etc., air has also got some properties. The study of those properties is Psychrometry. Usually main properties taken into account in Psychrometry are
1.Dry Bulb temperature.
2. Wet Bulb Temperature
3. Relative Humidity
4.Enthalpy
5.Humid Volume
6.Dew Point temperature
7Humidity Ratio
These are mostly thermodynamic properties and are represented in a chart called Psychrometric Chart. Psychrometry is applicable mainly in gas - vapour mixtures, because of their application in drying, heating , air-conditioning and the like.

References:
1. Agricultural Engineering -Problem Solving Approach
2.Wikipedia