Land Preparation Flashcards
LAND PREPARATION
- make soil ready for planting
- extent of preparation depend on existing vegetation and crop requirements
PROCESSES INVOLVED IN LAND PREPARATION
- plowing
- harrowing
- furrowing
BENEFITS OF LAND PREPARATION
- provide excellent condition for crop growth
- control weeds
- reduce harmful microorganisms
- incorporate organic matter
METHODS OF LAND PREPARATION (LOWLAND)
- tillage when soil is fully saturated with water
- involved puddling the soil (plowing then harrowing)
- final step is leveling and marking
IMPACT OF PUDDLING THE SOIL
- soil structure is destroyed
- soil is compacted at plow sole layer
- reduced percolation and seepage
TOOLS USED FOR LAND PREPARATION (LOWLAND)
- moldboard plow
- comb-tooth harrow
- wooded leveler
- tractor
MARKER
- facilitate transplanting
CHARACTERISTICS OF IDEAL PADDY SOIL
- small particle size/aggregates
- low hydraulic conductivity
- high bulk density
- neutral pH
- level and weed-free
REQUIREMENTS FOR LOWLAND CULTIVATION
- 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
METHODS OF LAND PREPARATION (UPLAND)
- tillage done when soil moisture is near field capacity
- application of plowing, harrowing, rotavator
FIELD CAPACITY
- soil condition where excess water has been fully drained
INDICATORS THAT SOIL IS AT FIELD CAPACITY
- squeezing and forming a ball without water coming out
- friable and break easy
- slide freely from the plow
- should not glisten with moisture
SOIL MOISTURE CONTENT AT FIELD CAPACITY (SANDY)
- 6-10%
SOIL MOISTURE CONTENT AT FIELD CAPACITY (LOAMY)
- 18-26%
SOIL MOISTURE CONTENT AT FIELD CAPACITY (CLAYEY)
- 23-29%
CONTOUR PLOWING
- tillage is done following the contour lines
CARABAO DRAWN TOOLS FOR LAND PREPARATION (UPLAND)
- spike tooth harrow (kalmot)
- furrower (lithao)
TRACTOR DRAWN TOOLS FOR LAND PREPARATION (UPLAND)
- moldboard plow
- disc plow
- disc harrow
- furrower
- rotavator
FURROWS
- shallow canals of specified distances
- where seedlings are planted
RIDGES
- raised bed formed between furrows
- planting area during rainy season
CHARACTERISTICS OF WELL-PREPARED UPLAND SOIL
- granular and friable
- stubbles and weeds thoroughly incorporated
- leveled
FORMS OF UPLAND PREPARATION
- conventional tillage
- minimum tillage
- no tillage
LAND PREPARATION FOR PERENNIAL CROPS
- extent depends on condition of land
- may or may not involve plowing and harrowing
- requires cutting of grasses
- adopts minimum tillage
LAYING OUT
- system of planting
- planting distance depends on species and growing condition