It has been two years since we broke ground at Project Merbok. The site was once a windswept hill covered with lalang (Imperata cylindrica) without any trees. The landowner wanted to do up the place as a retreat centre for his employees. A small house would be built, and behind the building there were to be fruit trees, vegetables, livestock, and fish ponds, all grown organically. To fulfill this vision, we did some earthworks for the ponds and vegetable terrace, brought in lots of compost, and planted many trees. Today, the landscape is much different from what it was two years ago. It’s like a little green oasis in the open grassland. We would like to share some photos and what we learnt.
A little green oasis in the open grassland
We previously posted that creating a windbreak was one of the most important tasks. The site is a hilltop and the highest point for a good distance all around. Without the windbreak, most of the fruit trees and edible plants would suffer. Despite being planted on the harshest area with the poorest soils, the Casuarina (Casuarina equisetifolia or Rhu) have been growing rapidly and doing well. The Eugenia (Eugenia oleina, or Syzgium campanulatum) are growing as well, but definitely slower. In some areas, we had to help them with competition from creepers and tall grasses. As our windbreak trees grow, they will slowly create a micro-climate more conducive for the other plants.
The tall Casuarina trees (left) provide wind and sun protection for the other trees (right).
View from the front, where the building will eventually be. Casuraina planted on the ridge line.
Two rows of casuarina trees.
Eugenia (left) getting competition from creepers and other weeds.
Being the highest point on this open grassland means lots of wind!
We finally started work on Project Merbok a few months back. One of the most important things we started with was to create windbreaks. You might ask: what’s wrong with enjoying a breeze in our warm humid climate? While a gentle wind helps with air circulation, too much of it causes many problems.
- Soil erosion: Organic matter (dead leaves, dried twigs) are very light and will get blown away easily. That leaves the soil exposed and also takes away the nutrition from rotting matter that the soil needs.
- Dryness: Wind removes moisture from the soil and plants. It’s the same principle as sunning your clothes on a windy day. Without moisture in soil, micro-organisms and earthworms die. Without moisture in soil, roots can’t bring water up to leaves.
- Energy wastage: Plants would have to expend energy to resist wind to stay upright. They would be reaching for the sun but pushed sideways by the wind. The wasted energy could be better used for biomass growth or food production. Compared to trees, grasses deal with wind much effectively. That’s the reason you see so much lalang on this site!
- Mechanical damage: Malaysia is quite sheltered by surrounding islands and typically do not suffer from typhoons. However, there are still windstorms that can uproot big trees. Even if the plant is well-rooted, the leaves can be mechanically damaged by the wind itself or rubbing against other leaves.