Africa Environment Day is Renamed Wangari Maathai Day

Africa Environment  Day is celebrated every of 3rd March since the year 2000.The day was set aside to raise awareness of the pressing environmental challenges facing the continent. During the African Union Summit held in Addis Ababa Ethiopia in February 2012, the African Union chose to honour the late professor wangari maathai by renaming Africa Environment Day Wangari Maathai Day, for her great contribution to environmental awareness in Africa especially in aforestation and reforestation.Great contribution was made by the late professor Wangari Maathai. Professor Wangari Mathai fought several battles with wisdom and diplomacy to save the environment. This made her a winner of the prestigious Nobel Peace Prize which was awarded her in Oslo Norway in Dec 2004.She has left a legacy which will outlive her and the battle continuous.

Agroforestry, farm forestry, community forestry, social forestry and village forestry are all terms used to describe growing of trees undertaken mainly outside gazetted forest zones. Agro-forestry has received much attention in the development efforts of rural Kenya over the years. Tree planting projects have been supported by government extension services as well as well as non governmental organizations. Increasing the tree cover from about 2% to 10% is the government policy in Kenya. However lack of seeds has often led to poor achievements in tree planting as the supply from central seeds stores is unreliable. Local seed collection is the answer to ensuring timely supplies of seeds, furthermore indigenous tree are adapted local area conditions. It is very easy to collect seed for on farm small nurseries. Simply observe the flowering and fruiting of various tree species to know when mature seeds are available. This varies from species to species and from one part of Kenya to the other.

Collect only mature seeds for good germination percentage and from trees that resemble what you want i.e. species for timber from straight trees, species for fodder from trees with high production of leafy biomass and species for fruit from good tasting and high yielding trees. Collect seed which has not been attacked by insect or fungi.Extract collected seeds from pods, cones or fruit and allow drying. Seeds which are oily or soft are recommended to be sown immediately and should not be stored ,while those with a hard cover may usually be stored. When storing keep the seed clean, cool, dry and protected from insects and rats. Label containers with name of the species and Date of collection. As Professor wangari maathai said “It’s the little things that citizens do which makes the difference and she quote “My little thing is planting trees” That one “little” thing led Wangari Maathai, who 
died September 25^th 2011, to found a movement by name the green belt movement, that not only planted over 47 million trees worldwide, including re-foresting her native country Kenya, but had improved the lives of over 900,000 women through economic empowerment by the year 2011.

Reforestation for Environmental Conservation in Africa

In the era of climate change and global warming, rampant deforestation and environmental pollution, where many don't care about the environmental conservation, this famous daughter of Africa, Professor Wangari Mathai devoted her entire life to saving the environment by encouraging reforestation and afforestation. She’s gone physically but she left a legacy which will live on.

Mass deforestation across Africa is common, where every year hundreds of millions of trees are cleared to produce timber, firewood, charcoal and forests products for household and industrial use. This has largely contributed to environmental degradation, climate change and reduction of agricultural production. Reforestation is therefore, mandatory for sustainable supply of forest products, sustainable agriculture and biodiversity preservation. The government of Kenya has made it a policy to achieve 10% forest cover. Farm forestry and agro-forestry are being promoted by extension officers from department of forest services and ministry of agriculture. This calls for reforestation at the rate of 25 plants per acre.

Farm Forestry or agro-forestry

Tree nursery establishment is the most important activity in preparation for reforestation. A nursery is a place where young plants are raised from under special care, in preparation for reforestation. A tree nursery is an ideal business venture for the youth in Africa, as people who want to plant trees find nursery establishment for individuals cumbersome and uneconomical resulting in poor adoption reforestation.

A nursery should be near a permanent water supply as plants need to be watered continuously. The soil should be fertile, deep and well drained while the site should be slightly sloppy to avoid standing water. The plants should be well protected from destruction by wind and animals. The site should be easy to access by foot or by vehicle. Collect seeds from healthy, good quality and high yielding mature plants .To test for viability place them in a container with water and the viable seeds will sink while the non-viable seeds will float then. Sort and remove broken, insect damaged seeds and dry them. Some hard seeds need treatment before sowing to ensure germination. Below are some of the seed treatment methods which can be used.

                                         

1. Soaking-soak the seed in hot water and leave them to cool in the water for 24 hours. Leucaenia leucocephala . Caliandra callothysus, acacia menisci and wattle are examples of seeds which can be treated this way, However seeds with softer coats can be soaked in cold water for 24 hours.
2. Burning- burning is an alternative method. Cover seeds with a thin layer of soil and a layer of dry grass on top. Set the grass on fire and let it burn which makes the seeds ready for planting.
3. Mechanical breaking-seeds are treated by breaking their hard coat to speed up germination e.g. croton megalocarpus seeds.

NB: Small light seeds do not need treatment before sowing e.g. grevillea Robusta.

Tree Nursery bed preparation

Clear the nursery site, dig to remove weeds and make soil fine .The nursery bed dimensions should be 1 meter wide, 15cm raised and any required length. Support the sides of the nursery bed with logs of wood, timber or tree branches. Add manure or fertilizer and sand to the soil before sowing. Note; in dry areas sunken beds are recommended in order to conserve moisture.

There are three main methods of sowing seeds in the nursery in preparation for reforestation.

1.     Broadcasting
2.     Sowing in drills 
3.     Sowing in holes

The seeds should be planted at a depth not more than twice its diameter. The bed should then be mulched and watered twice daily, morning and evening, during the dry season. After germination the mulch is removed and a shade is made over the bed. After the plants have produced the first two true leaves, they may be transferred to poly tubes where they can be cared for until they are ready for transplanting.

The plants may also be left to grow in the nursery bed until they are ready for transplanting. Root pruning should be done every 2 months while the plants are still in the nursery. The nursery bed should be kept free of weed plants, and the shade over the nursery bed should be removed 2 weeks before transplanting, in order to harden the plants for field conditions.

Trees are best planted at the beginning of long rains season, having prepared the planting holes in advance.

·        Place the plants in the hole, and then remove the polythene tube without twisting the roots

·        Firm up the soil around and water the plants

·        Protect the plants from damage

·        Weeding should be done to avoid competition for plants nutrients

Pruning is done at various stages as it has the following advantages:-

1)      Encourages plants vertical growth suitable for production of timber and posts

2)      Reduces knots on the plants for production of good quality timber

3)      Encourages branching for shade trees

4)      Reduces the harvesting height for fruit trees

Harvesting stage of trees is determined by their intended purpose, for example plants for timber are allowed longer growing period than plants for firewood.