Wednesday, July 6, 2011
Only the best palms should be sent to the field. So, good and prompt management of pest and disease cannot be over emphasized. In addition, very important aspects is the ability to identify rogues and runts at an early stage.
a. To allow only normal healthy seedlings to grow.
b. To remove all runts, abnormal and unproductive seedlings.
c. To supply the best quality palm available for field planting.
Twisted shoot. Planting of germinated seeds was not correctly done. This is not genetic in origin as it can be attributed to germinated seeds having been planted upside down. Such plants have coiled leaves and twisted stem.
Grass leaf. Also termed "narrow leaf". Seedlings have narrow and erect grass-like leaves.
Rolled leaf. The leaf lamina is rolled along its vertical axis, giving the appearance of a spike.
Collante is the term applied to seedlings that display marked constriction around the central part of the lamina which prevents full leaf expansion. It can be genetic, or may be induced.Natural collante of genetic origin normally develops at an early stage of seedling development and affected seedlings never fully recovers. Induced collante symptoms may appear within a few weeks after germination or transplanting, sometime after a period of normal growth. Any pathological or environmental factor (especially moisture stress) which impairs root development may predispose seedlings to collante. Maintenance of a satisfactory soil moisture status, by regular watering, should result in recovery of seedlings with induced collante symptoms.
As differentiation of seedlings with natural or induced collante
symptoms is difficult in the early stages of nursery development, culling should be delayed until seedlings are about six months old, by which time those with induced collante symptoms will display evidence of recovery.
As mild cases of leaf crinkling generally recover with improved watering, these should not be culled. Only severe and persistent cases should be discarded.
Chimaera The entire leaf or sections of the leaf are pale or bright yellow in colour in comparison to the normal dark green colour of the leaf tissue. The intensity, distribution of the discolouration may vary.
Retarded development. (Runt) This is sometimes shown by seedlings which are morphologically similar to palms of the same age. Such seedlings are liable to remain stunted and will yield badly.
Barren or sterile form. The fronds grow at an abnormally acute angle so that the palm has a very upright and rigid appearance.
Flat top form. Newly - produced fronds are progressively shorter so that they do not project beyond the older fronds.
Limp or flaccid form. The fronds and leaflets are very flaccid. The whole palm has a limp appearance and may appear quite short.
Juvenile form. The frond has a compressed appearance due to very close spacing of pinnae along the rachis.
Wide internodes. This condition may occur due to etiolation in closely spaced nurseries. However, in adequately spaced nurseries genetic abnormalities may also occur - such as pinnae spaced wide apart, thus giving the seedling a very open habit. Only the genetic abnormalities should be discarded ,and remedial measures should be considered if over-crowding is implicated.
Narrow pinnae insertion. This is a common characteristic of seedlings which are abnormal in their general morphology.
Accute pinnae insertion. Seedlings with abnormally acute pinnae insertion. ie. pinnae are borne at a very acute angle to the rachis
Short Internodes. Pinnae are very closely spaced along the rachis. Fronds appear compressed
Short, broad pinnae. This symptom often occurs in combination with short internodes and pinnae points are usually quite blunt
Sunday, July 3, 2011
1 gram of pollen mixed with 30 grams talcum to pollinate the female inflorescence when there are receptive stage which last for 2 to 3 days pollination process.
Purpose of mixing talcum with pollen is to spread the pollen during blowing.
Use to blow the pollens.
The purpose of using naphthalene is to avoid pollinater and other insect get in the bag.
Saturday, July 2, 2011
i. Relatively thick shell
ii. Thin layer of mesocarp
iii. Thin layer of kernel
i. Absence of the shell
ii. Thick layer of mesocarp
iii. Small kernel
i. Thickness shell
ii. Thick layer of mesocarp
iii. Big kernel
Dura was a homozygous dominant with the presence of thick shell while Pisifera was a homozygous recessive with the absence of the shell. A ring of fibre called mesocarp surrounded the kernel. Therefore, Dura was cross pollinated with Pisifera to produce a heterozygous Tenera with an intermediate shell thickness surrounded by a ring of fibre in the mesocarp. Tenera palms became the standard planting material for all commercial purpose in 1958.
Thursday, June 30, 2011
- Width (w) : 280mm
- Diameter (0) : 120mm
- Length (L) : 1000mm
- To pick up all fruits on the ground with a simple mechanism
- Suitable to all types of field conditions around the bases of the palms.
- Easy to operate.
- The task is reduces back pain of the loose fruit collector.
- If results in debris free collected loose fruits.
- Increased palm oil quality is achieved at the mill.
- Mengutip buah lerai dangan alat yang mudah
- Sesuai untuk pelbagai keadaan permukaan kawasan sawit(kecuali tanah gambut)
- Mudah dikendalikan.
- Mengurangkan kesakitan pengutip buah lerai
- Kurang/tiada sampah berbanding sistem lama
- Meningkatkan kualiti minyak (pada peringkat kilang)