Land Preparation Flashcards
1
Q
LAND PREPARATION
A
- make soil ready for planting
- extent of preparation depend on existing vegetation and crop requirements
2
Q
PROCESSES INVOLVED IN LAND PREPARATION
A
- plowing
- harrowing
- furrowing
3
Q
BENEFITS OF LAND PREPARATION
A
- provide excellent condition for crop growth
- control weeds
- reduce harmful microorganisms
- incorporate organic matter
4
Q
METHODS OF LAND PREPARATION (LOWLAND)
A
- tillage when soil is fully saturated with water
- involved puddling the soil (plowing then harrowing)
- final step is leveling and marking
5
Q
IMPACT OF PUDDLING THE SOIL
A
- soil structure is destroyed
- soil is compacted at plow sole layer
- reduced percolation and seepage
6
Q
TOOLS USED FOR LAND PREPARATION (LOWLAND)
A
- moldboard plow
- comb-tooth harrow
- wooded leveler
- tractor
7
Q
MARKER
A
- facilitate transplanting
8
Q
CHARACTERISTICS OF IDEAL PADDY SOIL
A
- small particle size/aggregates
- low hydraulic conductivity
- high bulk density
- neutral pH
- level and weed-free
9
Q
REQUIREMENTS FOR LOWLAND CULTIVATION
A
- soaking time: 1-3 months
- water: 200-700 mm for puddling (at least 400 mm of accumulated rainfall)
- labor: 20 md/ha with 1 draft animal
10
Q
METHODS OF LAND PREPARATION (UPLAND)
A
- tillage done when soil moisture is near field capacity
- application of plowing, harrowing, rotavator
11
Q
FIELD CAPACITY
A
- soil condition where excess water has been fully drained
12
Q
INDICATORS THAT SOIL IS AT FIELD CAPACITY
A
- squeezing and forming a ball without water coming out
- friable and break easy
- slide freely from the plow
- should not glisten with moisture
13
Q
SOIL MOISTURE CONTENT AT FIELD CAPACITY (SANDY)
A
- 6-10%
14
Q
SOIL MOISTURE CONTENT AT FIELD CAPACITY (LOAMY)
A
- 18-26%
15
Q
SOIL MOISTURE CONTENT AT FIELD CAPACITY (CLAYEY)
A
- 23-29%