Thursday, March 27, 2014

Reforestation

By Liliana Usvat
Blog 165-365

Common techniques currently used for afforestation in the Mediterranean basin consider the pre-existing vegetation (mainly shrubs) as a source of competition for trees, and consequently it is generally eliminated before planting. This is a wrong method.

It has been demonstrated that woody plants can facilitate the establishment of understory seedlings in environments that, like the Mediterranean area, are characterized by a pronounced dry season. the usefulness of shrubs as nurse plants for afforestation of two native conifers, Pinus sylvestris L. (Scots pine) and Pinus nigra Arnold (black pine).

Two-year-old seedlings were planted in four microhabitats: (1) open interspaces without vegetation (which is the usual method used in afforestation programs), (2) under individuals of Salvia lavandulifolia,



  Salvia lavandulifolia

 (3) under the north side of spiny shrubs, and (4) under the south side of spiny shrubs. Pine survival
   Pine

was remarkably higher when planted under individuals of the shrub S. lavandulifolia (54.8% for Scots pine,

  (Scots pine)
81.9% for black pine) compared with open areas (21.5% for Scots pine, 56.8% for black pine


   black pine


; p < 0.05).

The survival of both pines was also higher when planted on the north side of spiny shrubs, although the survival on the south side was similar to that found in open areas. 

Pine growth was not inhibited when planted in association with shrubs. This pattern appears to result from the combination of abiotic conditions imposed by the presence of a nurse shrub, which leads to improvement in seedling water status and therefore reduced summer mortality by drought.

The results show that the use of shrubs as nurse plants is a technique that offers both economic and ecological advantages, in terms of savings in labor and plant material and reduced and even negligible impact on the pre-existing vegetation.

Here is a video of forest  destruction and a tentative of forestation.

http://www.youtube.com/watch?v=tpGBB190BPE&feature=player_embedded

Wednesday, March 26, 2014

Mango Tree Useful for Forestation and as a Medicinal Plant

By Liliana Usvat
Blog 164 -365

 
Mango grows in any kind of soil and produces the fruit that may either be licked, eaten or slurped.
Mango is a good tree to consider for plating large areas of land, a tree that is useful  and can prevent landslides that we saw that are happening in the world.

More Mango trees can be planted in parks and public spaces. Public Garden should include Mango in the garden architectures of cities in warm areas.


  • Dried mango flowers are used in the treatment of diarrhea, chronic dysentery and some problems of the bladder.

Mango (Mangifera sp) is a fruit that grows in tropical regions throughout the world. It serves as the main food of many people in tropical countries and is often called the king of tropical fruits. Mangoes are eaten fresh or are used in making desserts, preserves, and some other foods. The fruit is an excellent source of vitamins A and C.

Mangoes were first cultivated about 4,000 years ago in India and the Malay Archipelago. In the 1700's and 1800's, European explorers brought mangoes from India to other tropical countries. Today, farmers grow mangoes in Brazil, India, Mexico, and the Philippines. In the United States, mangoes grow in Florida and in Hawaii.

The mango tree is an evergreen that grows about 70 feet (21 meters) tall. It has long, slender leaves and small, pinkish-white flowers. The fruit develops from the ovaries of the blossoms and ripens about five months after the flowers bloom.

Mangoes are evergreen trees that are drought tolerant and love sunshine.  Here are some great tips for growing and caring for Mango Trees:
  • Are accustomed to hot and dry climates so plant in full sun and do not over water. A good rule is to water a newly planted tree every three days for the first month, once a week for the next two months, and only during extended dry spells after that.
  • Be careful of over watering while fruit is developing as this can cause the fruit to burst.
  • Tropical plant that can become temporarily dormant at temperatures of 40 degrees or below and will be damaged or die at 32 degrees or below.  Be sure to cover during frost with coverings staked to the ground as this allows the heat from the ground to keep the tree warm.
  • Pruning is not recommended for amateurs and should only be done with sterilized blades.
  • Mango seeds do not produce the same quality fruit as the tree they originate from.  If you eat a particularly flavorful mango, its seed will not produce the same delicious fruit.  For this reason, many mango trees are grafted.
- See more at: http://www.tropicalfloridagardens.com/2011/05/24/tips-for-growing-and-caring-for-mango-trees/#sthash.L5SzIYij.dpuf
 Mango is a good tree that is used in Agroforestry

Mangoes are evergreen trees that are drought tolerant and love sunshine.  Here are some great tips for growing and caring for Mango Trees:
  • Are accustomed to hot and dry climates so plant in full sun and do not over water. A good rule is to water a newly planted tree every three days for the first month, once a week for the next two months, and only during extended dry spells after that.
  • Be careful of over watering while fruit is developing as this can cause the fruit to burst.
  • Tropical plant that can become temporarily dormant at temperatures of 40 degrees or below and will be damaged or die at 32 degrees or below.  Be sure to cover during frost with coverings staked to the ground as this allows the heat from the ground to keep the tree warm.
  • Pruning is not recommended for amateurs and should only be done with sterilized blades.
  • Mango seeds do not produce the same quality fruit as the tree they originate from.  If you eat a particularly flavorful mango, its seed will not produce the same delicious fruit.  For this reason, many mango trees are grafted.
- See more at: http://www.tropicalfloridagardens.com/2011/05/24/tips-for-growing-and-caring-for-mango-trees/#sthash.L5SzIYij.dpuf
Why Agroforestry

In many areas of the world, forests are more than just wildlife habitat or recreation sites. Many communities and families rely on local forests for the food they eat, the wood they use to keep their houses warm and the products they sell to support themselves. Without proper education, though, these life-giving forests are often degraded faster than natural restoration can occur, leaving the surrounding areas with poorer water quality, increased air pollution and a dwindling forest.

Agroforestry is a growing practice around the world in which forests are cared for by local residents, who also sustainably harvest fruits, nuts and sometimes the trees themselves. With proper management and reforestation practices, these forests and their “farmers” flourish, reaping benefits from each other.

One such project is Sangarédi, Guinea, and surrounding villages. Alcoa Foundation, American Forests and Association Guinéenne d’Eveil au Développement Durable are planting 28,000 trees with 2,500 volunteers in villages around Sangarédi, Guinea.

Cultural significance

The mango is the national fruit of India and the Philippines. It is also the national tree of Bangladesh. In India, harvest and sale of mangoes is during March–May and this is annually covered by news agencies. "Frooti" is an Indian mango drink 

The Mughal emperor Akbar (1556-1605 AD) is said to have planted a mango orchard having 100,000 trees in Darbhanga, eastern India. The Jain goddess Ambika is traditionally represented as sitting under a mango tree.

In Hinduism, the perfectly ripe mango is often held by Lord Ganesha as a symbol of attainment, regarding the devotees potential perfection. Mango blossoms are also used in the worship of the goddess Saraswati.

No Telugu/Kannada New Year's Day called Ugadi passes without eating ugadi pachadi made with mango pieces as one of the ingredients. In Tamil Brahmin homes mango is an ingredient in making vadai paruppu on Sri Rama Navami day (Lord Ram's Birth Day) and also in preparation of pachadi on Tamil New Year's Day.

 Medicinal Uses

  • The leaf of the mango plant is known to be very effective in controlling diabetes and blood pressure. Boil three to four mango leaves in water and allow the mixture to ferment overnight. Crush the leaves and drink this infusion first thing in the morning.
  • Suffering from hair fall or grey hair? Try mango seed oil. An excellent source of essential fatty acids, vitamins and minerals, the mango seed kernel has great moisturizing properties. You don’t need to go looking for the oil in the market. Just remove the outer coat of the mango seed and add them to a jar of coconut, til (sesame) or mustard oil.  Place the jar in sunlight for a few days. Use this concoction regularly for long, black and thick hair.   
  • few qualities of this amazing fruit
  •  Increases immunity: According physicians, a normal size Mango is more nutritious than butter or almonds. It strengthens and invigorates all the nerves, tissues and muscles in the brain, heart and other parts of the body. It cleans the body from within and helps to improve immunity. 
    • Provides protection against cancer: Mangoes are rich in dietary fibre, vitamins, minerals, and poly-phenolic flavonoids (an antioxidant compound). It has been found that mangoes have qualities that can protect against colon, breast and prostate cancers as well as from leukaemia.
    • Helps maintain good vision: Mangoes are an excellent source of Vitamin-A and flavonoids like beta-carotene, alpha-carotene and beta-cryptoxanthin. Together, these compounds are antioxidants and can help in improving and maintaining good vision. The carotene content in the fruit helps to protect the body from lung cancer.
    • Aids control of blood pressure:  Fresh mangoes are a good source of potassium. Nutritionists say that 100 g of the fruit provides 156 mg of potassium and just 2 mg of sodium. Potassium is an important component of the cell and body fluids. It also helps to control the heart rate and blood pressure.
    • Improves skin and complexion: Packed with Vitamin A, mangoes help by providing the body with an  essential nutrient  to maintaining healthy skin and complexion as well as the integrity of the mucus membranes.
    • Protects from heart disease: Mangoes are also a very good source of vitamin-B6 (pyridoxine), vitamin-C and vitamin-E. Vitamin C helps the body develop resistance against infections and scavenges harmful free radicals. Vitamin B-6 or pyridoxine is required for GABA hormone production (a hormone required to maintain muscle tone) within the brain. It also helps to control homocystiene levels within the blood, which in turn helps to protect the heart from CAD (coronary artery disease) and stroke.
    • Prevents anemia: The fruit contains moderate amounts of copper. Copper is an essential co-factor for the proper function of many vital enzymes, including cytochrome c-oxidase and superoxide dismutase. Copper is also required for the production of red blood cells.
     TRADITIONAL REMEDIES
    Heat Stroke
    Boil raw mangoes in water till cooked. Extract the juice, and mix with sugar, water, salt and a pinch of cumin seeds. Drink this consistently in the hot summer, especially when you suffer a heat stroke or get prickly heat.

    Digestion
    Aamchur or sun-dried raw mango powder is great to aid the digestive system. Eating one or two small tender mangoes in which the see is still not fully formed, with salt and honey is an effective medicine for summer diarrhea, dysentery, piles, morning sickness, chronic dyspepsia and indigestion.

    Blood Disorders
    Raw mangoes increase the elasticity of the blood vessels, and help the formation of new blood cells. It aids absorption of food iron. It increases resistance against TB, anemia, cholera and dysentery.

    Bilious Disorders
    The acids contained in the green mangoes increase the secretion of bile and act as an intestinal antiseptic. Have it with honey and black pepper daily. This paste is also good for toning the liver.

    Eye Disorders
    Mango Milkshakes are very good for the eyes, due to Vitamin A. Night blindness, dryness of the eyes, itching and burning of the eyes.

    Loss of weight
    Mango with milk, or preferably, Soya milk gives an ideal mixture of sugar and protein for under-weight people. Consuming this three times a day for a month will lead to better health, weight gain and vigor.

    Diabetes
    The tender leaves of the mango tree are used to prevent and control early symptoms of diabetes. Soak the fresh leaves in water overnight and squeeze them in water before straining it the next morning. Alternatively, these leaves should be dried, powdered and preserved. Take half a teaspoon of this powder twice a day.

    Spleen enlargement, dysentery and diarrhea
    The mango stone should be dried and powdered. (you may do the same with the jamun seeds). Mix this powder with a big tablespoon of curd to cure spleen enlargement, dysentery and diarrhea.

    Throat disorder
    The mango bark is very effective in the treatment of diphtheria and other throat diseases.

    Gum inflammation
    Boil two tablespoons of mango flowers and tender buds in two cups of water and use as a mouth-wash regularly to cure the infammation of the gums

    Skin disorders
    The gum of the mango tree and the resinous substance exuded from the stem end of the fruits can be mixed with lime juice and use to heal coetaneous infections and scabies.

    So, amazingly, almost every part of the mango tree is used to cure common diseases. So, here, like the coconut tree, we have a mango tree which has immense practical use in our daily lives.
Not only do they provide excellent shade but some of the tastiest and most popular fruit in the world. - See more at: http://www.tropicalfloridagardens.com/2011/05/24/tips-for-growing-and-caring-for-mango-trees/#sthash.L5SzIYij.dpuf




Not only do they provide excellent shade but some of the tastiest and most popular fruit in the world. - See more at: http://www.tropicalfloridagardens.com/2011/05/24/tips-for-growing-and-caring-for-mango-trees/#sthash.L5SzIYij.dpuf

 

Tuesday, March 25, 2014

Aztecs Trees and Gardens and Medicinal Plants

By Liliana Usvat

Tenochtitlan was a garden city, and the Aztecs/Mexica, in Jacques Soustelle’s words ‘had a positive passion for flowers’. This may hardly be surprising given that 1 in 10 of all the 250,000 species of plants in the world are found in Mexico - and half of these are ‘endemic’ to the country (only to be found in Mexico). 

The importance of flowers in ancient Mexico, representing as they did life, death, gods, creation, humans, language, song and art, friendship, stateliness, warrior captives, war itself, sky, earth... and an important calendar sign. Flowers accompanied humans from conception and birth to death and burial: clearly the flower was ‘one of the basic elements in the art of pre-Hispanic language - like the quetzal feather and the jade bead, it was the essence of something “precious”.

’The name for garden in general was xochitla, literally flower place; a variant being xoxochitla, a place of many flowers. A walled garden was xochitepanyo. The pleasure garden of the ruling class was designated as xochitecpancalli, the palace of flowers. The humble garden of the Indian was and is a xochichinancalli, flower place enclosed by a fence made of cane or reeds.’

Creating and developing a garden was a well respected pastime for the Aztec/Mexica élite, highly organised with teams of professional gardeners - who linked their expert knowledge of plants to the sacred calendar - and made possible by the accumulated wealth of the Aztec state. Writing of one of the many palaces that so astounded the Spanish with its beauty, Susan Toby Evans explains some of the ‘nitty-gritty’ behind the scenes:
 
 Labour crews performing tribute obligations built the place, dug the ponds, plastered them, brought the stone and timbers and plants - all of this magnificence was paid for by the Aztec empire. And the design... reveals how Aztec [rulers] were kept in contact with affairs of state - canals brought canoes directly to the palaces... just as limousines and helicopters today ferry executive officers of business and government from one important meeting to another.

So highly developed and regulated was the art of gardening that strict laws preventing commoners from growing (or picking) certain flowers helped the nobility to display their rank and privileges in a direct (and colourful) way...

Whilst the Spanish constantly only used one word - ‘rose’ - to describe any large, colourful flower, Mexica horticulturalists had already developed an entire scientific system for plant names, combining terms that referred to a plant’s key characteristics (appearance, colour, habitat, medicinal properties etc.) Phil Clark lists the following examples:-
• Aquatic - at(l)
• Medicinal - patli
• Herb - xihuitl
• Edible quilitl
• Shrub quatzin
• Tree quahuitl
• Spiny huiztli
• Flower-bearing xochitl
• Fruit-bearing:
- acid fruits xocotl
- sweet, fleshy fruits zapotla

It’s a sad fact today that not a single Aztec garden plan remains, and we’re left, ironically, with the - in some cases quite detailed - descriptions written by the Spanish conquerors before they ravaged what must have been a truly beautiful landscape.

Moctezuma II kept three pleasure gardens - at his Tenochtitlan palace, as part of the cypress park and hanging gardens at Chapultepec, and at Iztapalapa. In his second letter to Charles V, in 1520, Cortés described the palace garden of Cuitlahuac (Moctezuma’s brother) at Iztapalapa in glowing terms:-

There are... very refreshing gardens with many trees and sweet-scented flowers, bathing places of fresh water, well constructed and having steps leading down to the bottom. [There was also] a large orchard near the house overlooked by a high terrace with many beautiful corridors and rooms. Within the orchard is a great square pool of fresh water, very well constructed, with sides of handsome masonry, around which runs a walk with a well-laid pavement of tiles, so wide that four persons can walk abreast on it, and 400 paces square, making in all 1,600 paces. On the other side of this promenade toward the wall of the garden are hedges of lattice work made of cane, behind which are all sorts of plantations of trees and aromatic herbs. The pool contains many fish and different kinds of waterfowl.

The hilltop gardens of the poet-king Netzahualcóyotl of Texcoco at Tetzcotzinco proved legendary, and were later to inspire the not-to-be-outdone Mexica ruler Moctezuma I to create the ‘botanical’ gardens at Huaxtepec. The native chronicler Ixtlilxochitl (himself descended from Netzahualcóyotl) gave a rich description .
These parks and gardens were adorned with rich and sumptuously ornamented alcazars (summerhouses) with their fountains, their irrigation channels, their canals, their lakes and their bathing-places and wonderful mazes, where he had had a great variety of flowers planted and trees of all kinds, foreign and brought from distant parts... and the water intended for the fountains, pools and channels for watering the flowers and trees in this park came from its spring: to bring it, it had been necessary to build strong, high, cemented walls of unbelievable size, going from one mountain to the other with an aqueduct on top which came out at the highest part of the park.

Whenever the ruler claimed special (rare) plants in tribute, they were brought to the Aztec capital ‘in great quantities, with the earth still about the roots, wrapped in fine cloth’ - along with specialists in their upkeep - and were then ‘taken to Huaxtepec and planted around the springs’, according to the Spanish chronicler Diego Durán. The plantings were accompanied by ritual ceremonies that included bloodletting and the sacrifice of large numbers of quail to Xochiquetzal, the Mexica flower deity


By the time the Spanish came on the scene, the gardens had spread over 7 miles in circumference and held some 2,000 species of herbs, shrubs and trees. Cortés claimed these were the ‘finest, pleasantest and largest’ gardens he had ever seen:-

A very pretty rivulet [stream] with high banks ran through it from one end to the other. For the distance of two shots from a crossbow there were arbors [shady spots] and refreshing gardens and an infinite number of different kinds of fruit trees; many herbs and sweet-scented flowers. It certainly filled one with admiration to see the grandeur and exquisite beauty of this entire orchard.

All this was more than just an exotic display of conspicuous consumption: the medicinal plants grown at Huaxtepec were key to a huge trade in what today we might call ‘health products’ (follow the ‘Four Hundred Flowers’ link below to our Aztec Health section) - an Aztec industry whose importance was recognised by the Spanish: Huaxtepec was visited by the great natural historian Francisco Hernández, sent by the Spanish king to document the resources and to obtain valuable plants. 
 
Several great historians, including William Prescott and Francisco del Paso y Troncoso, have claimed that the Aztecs developed the world’s first botanical gardens or ‘places designed to display an encyclopedic array of plants’ (Toby Evans). It remains highly likely that Europe’s earliest botanical gardens, created in Italy in the 1540s, were inspired by the great Mexica pleasure gardens that blew the Spanish away with their beauty... 

The Aztecs had developed a highly sophisticated system of medicine, in which these medicinal and useful herbs played a vital part (Burns and Arroo 2005). We know this because, in the wake of the Conquistadors, scholars travelled to the Americas to record the knowledge of the indigenous people in the form of codices and other documents. We can also see traces of traditional uses of herbs in the contemporary use of medicinal plants by Mexican communities.

The codices - Medicinal Uses of Plants

Of the surviving post-Conquest documents, one of the most attractive is probably the Libellus de Medicinalibus Indorum Herbis – also known variously as the Aztec Herbal, the Badianus Manuscript, or the Codex Barberini (de la Cruz 2000). It was written in 1552 by a young Aztec doctor, Martin de la Cruz “taught by no formal reasonings, but educated by experiments only”, and describes a number of ailments suffered by the Aztec people, together with their recommended treatments – some of which seem a little bizarre, it must be said. 
A more detailed study is found in Friar Sahagún’s 16th Century General History of the Things of New Spain(de Sahagun 1963). This treatise of Aztec daily life – known as the Florentine Codex – contains a book titled “Earthly Things”, of which a large section is devoted to the medicinal herbs. Sahagúns’ text is considered to present a more authentic picture of genuine Aztec medicine than de la Cruz’ Aztec Herbal, because the latter had perhaps been “contaminated” by Spanish influences. We also have Hernandez’ Rerum Medicarum Novae Hispaniae Thesaurus, covering over a thousand medicinal plants, and described in detail in Professor Ortiz de Montallano’s introduction to this section.

Together, these documents describe a number of plants that are well known to us today as foodstuffs – vanilla, tomato, and guava, for example – and others that we know as ornamental flowers, such as types of magnolia and frangipani. The books give us botanical descriptions of the plants, details of how the Aztecs prepared them, and tell us which ailments were treated with them.  
Hot and cold
Like Europeans of the time, Aztecs believed that plants were “hot” or “cold”, and could be used to correct excess heat or cold in the body. Excess cold in the body was concomitant with the retention of water, and cold/watery illnesses like gout ( coacihuiztli, which literally translates as “the stiffening of the serpent”) would be remedied with the application of a hot herb. 

(Yauhtli)
Interestingly, many of the hot herbs, such as yauhtli (Tagetes lucida), act as diuretics, removing excess water from the body. Yauhtli was frequently used together with the hot herb iztauhyatl (Artemisia mexicana)

  (Artemisia mexicana)

, the leaves of which were ground in water and drunk. Conversely the root of the Tlalmizquitl (Prosopis juliflora, the mesquite tree)


( Prosopis juliflora)

 is “required by him whose body is very hot...it is the proper drink to cool his body”. 

Sweet-smelling flowers – the Aztec word for flower is ‘xochitl’ - were considered to be medicinal. De la Cruz describes an attractive remedy for the relief of fatigue, requiring eloxochitl (Magnolia dealbata), 

Magnolia dealbata


izquixochitl (Bourreria humilis)


, cacaloxochitl (Plumeria mexicana,


(Plumeria mexicana),
 a frangipani described as being of “exceeding beauty”) and mecaxochitl(Vanilla planifolia). 


  mecaxochitl(Vanilla planifolia)
Together with a few other “sweet summer flowers”, a fragrant water is made which will give “gladiatorial strength to the body” of the patient who bathes in it.  

Given as treatments for digestive troubles are the cotztomatl (Physalis costomatl - incidentally the Aztec word “tomatl” is the root of our “tomato”) 

  cotztomatl (Physalis costomatl)

; mecaxochitl, “for internal ailments”; memeya (a Euphorbia),

  Euphorbia

 good for “one whose abdomen goes resounding”; and the cococxiuitl (Bocconia frutescens),

  cococxiuitl (Bocconia frutescens)

 used for constipation. Apparently the latter cannot be eaten or drunk, but must be inserted in, shall we say, the other end of the alimentary canal. Sahagún’s informant warned, “It burns like chilli”. Fortunately he added that “not much is required”, for which the patient must have been grateful.

For the ever-present gout the Aztec herbalist applied picietl (Nicotiana rustica, a wild tobacco)



 – also good for relieving tiredness.
Respiratory illnesses don’t appear all that frequently in the Aztec literature, but recommended for a chesty cough is the Tlaquequetzal (Achillea millefolium, or yarrow).
  Tlaquequetzal (Achillea millefolium, or yarrow)

The activities of the Aztec warriors kept the healers busy. For “him who is pierced by an arrow”, the leaves and bark of the waxy chapolxiuitl (Pedilanthus pavonis) 

  Pedilanthus pavonis


are applied to the wound, as it a preparation of zayolitzcan (Buddleia americana).

  Buddleja americana
 The combination of agave sap and salt is a very regular occurrence in wound remedies - agave sap, when mixed with salt, forms a solution that kills bacteria by dehydrating them. 

Need a tonic? Try this recipe. Take the sap of the yellow-leafed maguey (Agave atrovirens), and cook it together with some yellow chilli and tomato juice, and ten gourd seeds. Take after eating.
After that you may need some Aztec toothpaste. Take the root of the tlatlauhcapatli (Geranium carolinianum), 

  (Geranium carolinianum)

together with some salt and chilli, and make a paste. Rub the paste into your teeth, if you dare. 

And for a mouthwash, try an infusion of iztauhyatl (Artemisia mexicana).