Page 169 - ผลกระทบระยะยาวของการปลูกยางพาราต่อสมบัติดินและความหลากหลายทางชีวภาพในดิน Long Term Impact of Rubber Plantation on Soil Properties and Biodiversity

ห้องสมุดกรมพัฒนาที่ดิน

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Weeding  yes  no

- How  all removed  intra-rows  inter-rows

Handmade (no soil disturbed)  yes  no

- Years of weeding : ___________________________________________________

- Number of weeding per year : _________________________________________

- Location  around tree  inter-rows

 intra-rows  other

Mechanical (soil disturbed)  yes  no

- Years of weeding : ___________________________________________________

- Number of weeding per year : _________________________________________

- Depth of tillage  0-15 cm  16-40 cm

- Tillage tools :  tractor 4 weels  tractor 2 weels

 Non-mechanical plough  other

- Location  around tree  inter-rows

 intra-rows  other

- Other : ____________________________________________________________

Chemical  yes  no

- Type & form : _______________________________________________________

- Years of weeding : ___________________________________________________

- Number of weeding per year : _________________________________________