Page 103 - Abstract book - TJSSF-2020

Thailand – Japan Student Science Fair 2020 (TJ-SSF 2020)
“Seeding Innovations through Fostering Thailand – Japan Youth Friendship”

Develop the mulch from agricultural waste and natural rubber to reduce
water dehydration from the soil

Ketmanee Phimvijit , Suthamma Orachai
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Advisor: Khunthong Klaythong
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Princess Chulabhorn Science High School Pathumthani
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Abstract

The development of mulch from agricultural waste together with natural rubber latex to reduce water
evaporation from the soil and reduce the use of plastic mulch. The experiments divided into 6 periods
as follows: (1) Studying agricultural waste suitable for mulching, found that bagasse is the most
effective in keeping moisture, followed by coconut pulp and rice straw respectively (2) Studying the
influence of various components on forming mulch from agricultural waste together with natural rubber.
By mixing the mulch, natural rubber latex, water and tapioca flour in different ratios and pouring on the
coagulation. Then, observed after 2 hours of mixing. Found that increasing bagasse ratios at 8.0, 10.0
and 12.0 grams affected to the composition of the ingredients is more difficult and the flexibility of the
mulch sheet. Decreasing the ratio of water to 50 grams reduced flexibility as well as increasing the ratio
of tapioca flour to 10 grams (3) Studying the influence of duration and temperature on forming mulch
from waste materials. By baking formulas that can be molded in (2) at temperatures of 30, 50 and 70
degrees Celsius for 2, 4, 6, 8, and 10 hours. Found that at 70 degrees Celsius, the mulch can dry for 4
hours, but the surface is burned while the bottom still has a little moisture. At 50 degree Celsius, the
mulch has a relatively dry drying on the surface and on the bottom and dry for 8 hours, while 30 hours
cannot be dried in 10 hours.

Keywords: Coconut meal, melon, bagasse, efficiency in reducing soil water evaporation,
rice straw, mulch

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