Small Water Impounding Projects
Small water impounding projects play a major role in rainwater collection and in flood and erosion control. They provide supplemental irrigation water for intensified crop production which may substantially increase the farmer's income. In addition, impounding projects also contribute to the water requirements of livestock production, aquaculture, power generation, and recreation. This publication attempts to pool information or technologies on small water impounding projects.  

Soil Conservation
Soil is one of the dominant factors that affect crop production. To produce a good crop, the soil must be well managed. Soil must be  used according to their capability and must be conserved. Studies on soil conservation in the Philippines are very limited. There is a lot that needs to be known about Philippine soil if we are to conserve their fertility for the succeeding generations, even as we increase their present productivity. The Philippine Recommends for Soil Conservation offers the public relevant information about the soil, its capability and limitations. It also discusses the methods of conserving our soil resources and controlling soil erosion. Soil erosion studies in the Philippines are very few; efforts were made to incorporate in this technology package recent recommendations on soil erosion control in the tropics based on results of researches done in the temperate countries. This volume is revision of the Philippines Recommends for Soil Conservation first published in 1977. The Philippines Recommends (Technical Bulletin) Series is published in line with the continuous effort of the Philippine Council for Agriculture and Resources and Research and Development (PCARRD) to package research information for actual and effective utilization.  

Soil Fertility Management
The manner in which the soil is handled today determines its productivity tomorrow. Continuous cropping without replenishment of the soil's nutrients inevitably depletes the soil's natural fertility. First printed in 1978, the Philippines Recommends for Soil Fertility Management presents all available information on the management of the Philippine soils in relation to crop production. The Bulletin is meant to help the farmer and the extension worker in the management, revival of maintenance of soil fertility to attain optimum crop yield. 

Irrigation Water Management
The Philippines Recommends for Irrigation Water Management pools technical information on irrigation water management for upland crop production. Although the Philippines has attained self-sufficiency in rice with intensified and improved irrigation and water management in lowland areas, a relatively high percentage (70%) of farm areas still depends basically on rainfall. But rainfall is unevenly distributed and often cannot adequately provide moisture required for successful crop growth. This has caused concern, particularly for upland crops which are, as means of crop diversification, essential to the country's agricultural productivity. The moisture regimes of upland areas are unsaturated most of the time, and the cultivation of upland crops requires adequate water supply. " Irrigation water management for upland crop is," according to the Philippines recommends for Irrigation Water Management, "the application of the right time for optimum growth and development. It includes the control and delivery of water and removal of excess water, (since) upland crops will not tolerate water-logged conditions..." The book adds that although the principles involved are quite similar for both lowland and upland conditions, irrigation and water management practices are more complicated under upland conditions. Basic considerations in water management for upland crops are discussed quite fully and drainage methods explained in detail. Finally, the volume discusses upland cultural practices in relation to water management.