Best Bet Land Management Options (page being improved)

In most instances, the land management options identified for introduction in the catchments were variants of the contour hedgerow farming in combination with other practices like soil fertility management and animal production. In the Philippines, the use of natural vegetative strips (NVS) is one technology that was identified by the farmers. This is done by using naturally-growing grasses and some agro-forestry crops as hedgerows. It is worth noting that several farmers have already made use of this technique as a result of the promotion activity by ICRAF in the area. Adoption seems to be affected by the tenure system of the farmers. About half of the landowners have adopted some conservation measures but none from the tenants (Duque et al, 2001). For those who are interested but have not yet adopted, the major reason is the cost of establishment.

In Indonesia, the option identified is a combination of fodder grass planted on alternate terraces of land currently used for annual upland crops and cattle fattening. In terms of seriousness of erosion, this area needs priority attention. The fodder grass is expected to reduce erosion and serve as feed for the livestock. The identification of the option was based on lessons learned from elsewhere in Indonesia that farmers' adoption and improvement of a conservation measure is determined by the economic contribution of the measure to the household economy. Farmers are attracted to a practice only if the practice promises economic benefit and this consideration must be put forward in the participatory technology selection.

Vetiver grass and T. candida are the hedgerows in the alley cropping system introduced in the catchment in Vietnam. The technology intervention has just been started and so the effect of the intervention on crop growth and yield cannot still be evaluated. Possibly as a result of the demonstration site on alley cropping near the site, the farmers believe that the system will reduce runoff and soil loss, add organic matter and improve soil fertility by adding the hedgerow trimmings.

Other options that the farmers in the Philippines look at are the planting of pasture legumes during fallow after growing potato, corn or cabbage instead of grass fallow for 3-4 years and planting tiger grass and bamboo along the creek banks to serve as buffer. Tiger grass and bamboo are expected to provide additional income as tiger grass is used for soft broom and bamboo as props for the banana plantation.

It was observed that presentation and discussion of the results of monitoring in the catchments with the farmers helped very much in the identification of the land management options that are more appropriate in the particular area. While the farmers are aware of soil erosion and its negative effect, actual observations and the alarming figures presented increased their appreciation of looking at a longer time horizon. As they are aware of the declining productivity of their land, they were also interested in fertility management. Of course, their immediate concern is the benefits that they will gain in the short term. These concerns should be given more emphasis in introducing any interventions in their farms.

Catchment
Best bet options
Indonesia Babon Combination of fodder grass planted on alternate terraces of land currently used for annual upland crops and cattle fattening
Laos Lak Sip Contour cropping with contour barriers of perennial crops as from experience of ASIALAND network; direct seeding through mulch (cover crop killed by herbicide); improved fallow land management.
Nepal Masrang Khola Sloping agricultural land technology adopted from the Philippines
Philippines Mapawa Use of natural vegetative strips (NVS) and some agrofrestry crops as hedgerows; fertilizer management will be incorporated with the technology. Other options include planting pasture legumes during idle period and tiger grass and bamboo along creeks.
Thailand Huai Ma Nai Hillside ditch farming system
Vietnam Dong Cao Use of Vetiver grass and Tephrosia candida as hedgerows and improved variety of cassava in the alleys

 

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