A5036107533- Oil Palm Production and Sustainability
- Biofuel production and bioconversion
- Conservation, Biodiversity, and Resource Management
- Cassava research and cyanide
- Biodiesel Production and Applications
- Cocoa and Sweet Potato Agronomy
- Agricultural and Environmental Management
- Coconut Research and Applications
- Banana Cultivation and Research
- Livestock Farming and Management
- Date Palm Research Studies
- Plant Reproductive Biology
- Geological and Geophysical Studies
- Agricultural Systems and Practices
- Energy and Environment Impacts
- Statistical Methods and Applications
- Seed Germination and Physiology
- Crop Yield and Soil Fertility
- Agricultural Science and Fertilization
- Flowering Plant Growth and Cultivation
- Agricultural pest management studies
- Ruminant Nutrition and Digestive Physiology
- Agricultural Innovations and Practices
- Soil and Land Suitability Analysis
- Ancient Near East History
Asia School of Business
2024
University of Nebraska–Lincoln
2021-2023
International Plant Nutrition Institute
2014
WorldFish
2014
Palm oil production is a major source of income for millions smallholders in Indonesia. However, actual yield remains low relation to the attainable yield. While emphasis has been given planting material as factor explaining smallholder fields, role agronomic management received less attention. We assessed palm productivity independent fields quantified gaps and their causes using data on fresh fruit bunch (FFB) practices collected over two years across 977 fields. The gap was estimated each...
Smallholders account for ca. 40% of oil palm area in Indonesia but average yield remains low. Despite higher overall fertilizer use compared with other Southeast Asian countries, poor plant nutrition has been identified as a major factor explaining gaps smallholder fields and little is known about the underlying management drivers. To assess nutrient identify entry points to narrow existing gap via improved nutrition. We assessed balances nitrogen (N), phosphorous (P), potassium (K),...
Indonesia is the most important oil palm producing country. Nearly 40% of planted area managed by smallholders, with yields well below potential. Efforts to increase productivity have focused on source planting material, little attention paid plant nutrition. To assess degree which current in smallholder fields limited nutrients scenarios distinct sources material. We collected detailed data leaf nutrient concentration from 30 derive minimum sampling size needed diagnose status....
The physiological oil palm growth model PALMSIM can be used to estimate yield ceilings that provide benchmarks for sustainable intensification of production, either by expansion cultivation degraded sites or increasing production from areas under cultivation. This is demonstrated using two case studies. In the first study, estimates water-limited Kalimantan was overlaid onto a recently published map showing potentially suitable A large proportion (35.6%; 115,300 km2) identified fell into...
Oil palm is the major source of vegetable oil in world and Indonesia main producing country. There limited knowledge on factors accounting for spatial temporal variation fresh fruit bunches (FFB) yield. Here we investigated relationships between weather endogenous with FFB yield its components (bunch number individual bunch weight) using data collected from well-managed plantations Indonesia. The database included many sites years (total 136 block-years observations), portraying a wide range...
Smallholders are responsible for a large share of global palm oil production. Yet, in Indonesia, the main producing country, smallholders' yields remain low. Better management practices, including short harvest interval (HI, number days between two rounds), could help to raise smallholder yields. However, at present, HI is long fields and drivers underlying this phenomenon poorly understood. We explored agronomic, socio-economic, institutional factors that underlie harvesting practices...
SUMMARY Defoliation affected inflorescence production by oil palms, causing a decrease in sex ratio (ratio of female inflorescences to total) and an increase abortion rate. Clones differed response defoliation. One seven clones showed no rate; one clone there was tendency for abort greater numbers than males. The change occurred much sooner after defoliation some others, comparison flowering records with dissections done at the time indicated that more stage development. This has important...