1. Land and climatic suitability
2. Land rehabilitation and preparation
3. Irrigation and water source
The three elements are very basic and crucial to be considered if the planting remains sustainably successful. They interact closely with each other in for plant growth.
For example land , its series and chemical analysis should be known . The topography of the land which means the gradient of the land. There are certain degrees that land can be cultivated.
For example land , its series and chemical analysis should be known . The topography of the land which means the gradient of the land. There are certain degrees that land can be cultivated.
Crop suitability against soil gradient
Terrain Class
|
Slope (0)
|
Crop
Suitability
|
C1
|
0-20
|
ü Suitable for suitable for short term crops
|
C2
|
2-60
|
ü Suitable for medium term crops
ü Suitable for perennial crops
|
C3
|
6-120
|
ü Not suitable for suitable for short term crops
ü Suitable for medium term crops
ü Suitable for perennial crops
|
C4
|
12-200
|
ü Not suitable for suitable for short term crops
ü Not suitable
for medium term crops
ü Suitable for perennial crops
|
C5
|
20-250
|
|
C6
|
>250
|
ü Not suitable for agriculture
|
As far as climate is concerned, the trend in rainfall pattern should be known so that water can supplied at the correct time.
In Malaysia, the country is endowed with good tropical climate characterized by high
rainfall and temperatures throughout the year. Climatic variations follow the
influence of the monsoon winds. The northeast monsoon blows from December to
March, while the southeast monsoon occurs around June to October. The total
average annual precipitation is an estimated 2,722 mm. There are two rainy
seasons: from mid September to January and from mid April to mid July which had
rainfall of 230 to 330 mm/month and between 200 mm/month, respectively. The dry
months are March and August, of which both months received 150 mm/month.
Similar trends followed with the number of raindays i.e 10 raindays per month.
Reports showed the temperature is relatively uniform throughout the year, with
an annual average of 27.9 °C, ranging from 23.8 to 32.1 °C. The drought months
of March to April and mid July to August are the warmest. Owing to high
temperatures and rainfall, humidity is high throughout the year with an average
of 82 percent.
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