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The objective of this research were to study of methods to increase growing
para rubber in lower northeastern part of Thailand, to study growing para rubber and
to study farmers problem in lower northeastern part. This methodology employed
was mixed method. For quantitative method, 370 respondents were farmers from 5
provinces, 27 districts, selected by purposive sampling and quota sampling technique.
For qualitative method, 23 respondents were farmers from amounts in each of the
districts. The instruments were in-depth interview, observation, focus group
discussion and documentary. The collected data was analyzed with content analysis,
synthesis technique and demonstrated in term of its frequency, percentage.
The finding were as follow :
1. most famers own their para rubber area size of plantation 11-20 rai. The plantation
area was sandy loam soil, soil deeper less than 50 centimeters in para rubber
plantation. Cassava was growing before para rubber trees which most farmers were
lack of training in knowledge of rubber plantation from the government. The clones
used were RRIM 600 intercropping with cassava. No pruning after the opening of
tapping. The formulas 15-15-15 fertilizer was used twice a year. The most para rubber
tree problems were such as damaged insect, black stripe. Some farmers were begun
tapping earlier when the trunk tree was smaller than 50 centimeters. The tapping
system was half spiral tapped two days within three days and three day within
four days. The para rubber processed to raw rubber sheet, rib smoked rubber sheet
and cuplump.
2. the problem and method to increase growing para rubber was found that para
rubber plantation was not suitable, the rubber farmers needed to improve soil
property, make drainage channel. The farmers lack of knowledge of taking care of
rubber plantation. To growing cassava 2 meters wide the plantation within 3 rows.
To cutting mark root space 50 centimeters using formulas 15-15-15 or 16-16-16
which expensive. The rubber farmers should make own fertilizer rely on soil and
para rubber trees. After farmers have started tapping their rubber trees caused of
fungal, pesticides usage or insect prevention. The tapping has begun on 7 years old
or the standard trunk, the tapping system was half spiral tapped once every three days
for first 3 years. To begin tapping para rubber trees earlier than 7 years, the farmers
should tapping under level 150 centimeters, tapping when measuring around the trunk
less than 50 centimeters and used the one-third of trunk tapping system, tapping every
third days. The rubber farmers needed training well before tapping. The processed to
rip smoked rubber sheet by para rubber farmer groups which stayed longer than
cuplump and more expensive. |
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