Agroforestry and SustainableVegetable Production
Case Study: Nghia TrungVillage, Bu Dang District,Binh Phuoc Province, Vietnam
SUMMARY THE BASELINESTUDY
•Issues related to
–no-tillage vegetable system
–Soil and water conservation
Location of the study area
Topography, climate, andhydrology
•ELEVATION: 300-500m ASL
•SLOPE: medium to high
•RAINFALL: > 2000mm/year
HIGH RISK OFSOIL EROSION
CULTIVATED AREA OF MAINCROPS
Crops
Annual cropsPerennial cropscashew
Rubber
Coffee
Black pepper
Fruit trees
ha
243.3
4726.4
3255.0
275.5
1095.0
33.4
67.5
5%
95%
65%
6%
22%
1%
1%
Total
4969.7
100%
MAIN CROP IN THE STUDYAREA
•CASHEW NUT
Sources of water for farm land (%of area by land use types).
Source ofirrigation
Rainfed
Stream
Lake, pondHand-digwell
Deep well
Homegarden
23%
17%
23%
30%
7%
otherannualcrops
75%
0%
13%
6%
6%
Land forperennialcrops
62%
18%
16%
3%
0%
CASHEW CROPPING CALENDAR
•WEEDING: JUNE AND SEPT.
•PRUNING: JUL-NOV.
•LAND SURFACE CLEANING: DEC-FEB.(before harvesting)
Cashew production practices
2 times of weeding:
1 in June
1 in Sept.
Pruning during heavy rain period
Field cleaning: gathering and burning allorganic materials (tree leaves, deathbranches, grass)
NO GRASS/COVER ON SOILSUFACE
These lead to enhance
Soil erosion
Farmer perception
•THEY RECOGNIZE AND UNDERSTANDTHE NEGATIVE IMPACTS OF SOILEROSION
Measures to control soil erosion
•Earthen bank/small canal
•Weeding at the end of rainy season
•Reduced weeding
•Making of hedgerow
•intercropping
COVER/MULCHING IN CASHEWPLANTATION?
•COVER CROP?
–FIRE IN DRY SEASON!
–INSECT & DISEASE.
•MULCHING?
–TERMITE!
INTERCROPPING
•In the first 3 years only.
•Cassava, peas, beans are the mostcommonly used
Intercropping
•Cacao-cashew combination recentlyintroduced to the local farmers
•cacao production is still unknown
•Its cultivation is in experimental stage
–Some primary results :
•cacao grow well
•Cashew nut yield increase
–
Main problems for cover/mulchingcrops
•Very few species can grow under densecashew canopy.
•Drying during dry season
•Low biomass produce
Future research
•Find out the suitable crops using as greenmanure/much/compost suitable in thesecondition
Vetiver grass using as a bio-erosion control; compostingmaterial
Pueraria phaseoloides, crotalaria, sesbania, and other leguminuoususing as a green manure and cover in the new planting cashew
Vegetable cultivation constraints
•Land is not suitable
•No vegetable is grown well under shadingcondition.
•Lack of water in dry season
Future research
•Find the suitable species- indigenous rootcrop, that can grow well under shadingcondition