Browsing Crop, Soil and Environmental Sciences by Title
Now showing items 1-20 of 96
Adoption and management of alley cropping in Haiti
(2019-10-01)
Haiti, a hilly densely populated country, has experienced soil erosion problems for decades. The major impact is a reduction of soil fertility leading to decreasing agricultural productivity. Agriculture, a major sector ...
Adoption of rock walls as a soil conservation structure in Haiti
(2019-10-01)
Land degradation has been identified as one of the most serious ecological, environmental, and economic problems facing the Haitian society today. One particular problem is soil erosion. Throughout the 19th century, ...
Alterations to sediment nutrient deposition and transport along a six reservoir sequence
(2021-04-26)
Reservoir presence and construction has become commonplace along rivers due to the multitude of ecosystem services they provide. Many services are well recognized, including the effectiveness of sequestering both sediments ...
Bwa yo: important trees of Haiti
(2020-03-02)
Trees and their forest habitats have played a major role in creating a fertile environment in Haiti. The ecological fabric that has nurtured the soil and supported life for millennia gradually has been unraveled by human ...
Can texture-based classification optimally classify soils with respect to soil hydraulics?
(2022-10-14)
[1] In the past, texture-based classification of soils has been used for grouping soils in
variably saturated water flow and solute transport studies. Classification of soils becomes
especially important for large-scale ...
Comparison of probabilistic post-processing approaches for improving numerical weather prediction-based daily and weekly reference evapotranspiration forecasts
(2023-03-04)
Reference evapotranspiration (ET0) forecasts play an important role in agricultural, environmental, and water management. This study evaluated probabilistic post-processing approaches, including the nonhomogeneous Gaussian ...
Dataset for: Sediment and Nutrient Transport Through a Reservoir Sequence Along a Large River System
(2023-03-04)
Reservoirs are highly effective at sequestering both sediments and sediment-bound nutrients, such as silts and phosphorus (P), but are also capable of depositing significant quantities of nutrients with more complex ...
Intervention Success Stories Productive Land Use Systems Project
(2024-04-04)
This report presents some pictorial and descriptive highlights of Productive Land Use Systems Project accomplishments. Selected land use techniques promoted by the Project are described and estimates of their impacts on ...
Linking prescribed fire, nutrient deposition and cyanobacteria dominance through pyroeutrophication in a subtropical lake ecosystem from the mid Holocene to present
(2023-11-09)
Prescribed fire (Rx-fire) is a common management tool for many forested ecosystems and promotes tree and forest soil health. Although burned materials from Rx-fire areas can enter adjacent aquatic environments, very few ...
Long-term effects of soil conservation barriers on crop yield on a tropical steepland in Haiti
(2019-05-03)
In this research, we wanted to know how alley cropping between tree barriers compared to the more traditional conservation barriers used in Haiti in terms of long-term crop yields. Our hypothesis was that alley cropping ...
PHYSICAL MEASUREMENTS IN SUBSURFACE HYDROLOGY
(2022-10-14)
Measurements needed to define the basic hydraulic properties of subsurface porous media constitute a fundamental problem. Complex mathematical flow models can only make realistic predictions if the correct values for the ...
Promising tree species as hedgerows for alley cropping in different environments in Haiti
(2019-05-03)
Alley cropping is a system whereby annual crops are planted between rows of trees, which are pruned during the cropping season and the prunings applied as mulch or green manure. During periods where no crop is grown, the ...
Raw and post-processed ensemble forecasts of crop reference evapotranspiration over the CONUS produced with NWP
(2023-03-04)
Database with raw and post-processed ensembles of summer crop reference evapotranspiration forecasts over the CONUS based on numerical weather predictions (NWP). The forecasts consider single or multi-model NWP from The ...
Report 01. Status of seed orchards and tree improvement trials in Haiti and plan of activities 1993-1994
(2019-09-03)
1. The status of tree improvement activities developed during the AOP and AFII projects is reviewed and specific recommendations are made for the utilization of improved sources during the PLUS project. Information is ...
Report 01. Tree planting in Haiti: a socio-economic appraisal
(2019-09-10)
The purpose of this rapid-reconnaissance study was to augment previous work on tree planting in Haiti by taking advantage of a longer history of woodlot operations and to include socio-economic data on hedgerows, border ...
Report 02. A review of PDAI and ADS II project technologies
(2019-09-03)
A task was undertaken on behalf of the Productive Land Use System (PLUS) project to review technologies tested or developed in two earlier USAID-funded projects in Haiti with potential application to the PLUS project. The ...
Report 02. An interim report on influences of inoculation with nitrogen-fixing symbionts on reforestation efforts in Haiti
(2019-09-10)
Many of the tree species produced in the AOP are able to fix nitrogen when their roots are colonized with the appropriate symbiotic microorganisms. In order to ensure colonization, tree seeds are inoculated at planting ...
Report 03. Monitoring and evaluation system for PLUS
(2019-09-03)
A Monitoring and Evaluation (M&E) System for PLUS was set up during a consultancy to Haiti between January 8 and February 26, 1993. The system was designed in collaboration with USAID, CARE and PADF, with the assistance ...
Report 03. Short-term seedling field survival and growth as influenced by container type and potting mix
(2019-09-03)
This investigation tested the field performance of planting stock types used in the AOP. Field growth and survival of five species (chene, kapab, cassia, neem, and ced) were measured. Four container types (Winstrips, ...