Results on research into

What role does synthetic nitrogen fertilizer play as a primary greenhouse gas hotspot?(25/08/2026)

Nguyen Vu Ky, Division of Agriculture System, WASI. Email: vuky124@gmail.com Our study results on greenhouse gas (GHG) emissions from intercropping systems in Robusta coffee farms in Dak Lak province showed that synthetic fertilizer played the role of the absolute dominant driver of GHG emissions, specifically acting as the central “emission hotspot” that overshadows all other farm inputs. The Dominant Source of Emissions: Synthetic nitrogen fertilizer was identified as the single…

Summary article: Soil acidification and nutrient imbalance under intensive Black pepper plantations in the Central Highlands of Vietnam Nguyen Van Long, Pepper Research and Development Center, Western Highland Agriculture and Forestry Science Institute. Black pepper is one of Vietnam’s key export crops, largely concentrated in the Central Highlands. In recent years, however, productivity and sustainability of black pepper production systems have been increasingly threatened by soil degradation and rising pressure…

INVESTIGATE THE EFFECTS OF DIFFERENT LEVELS OF RIPENESS OF BLACK PEPPER BERRIES ON QUALITY IN THE CENTRAL HIGHLANDS(11/12/2025)

Abstract PhD. Nguyen Van Long Determining the harvest stage is one of important factors that directly affect the yield and quality of black pepper. The experiment investigated the effect of harvesting ripe levels of pepper fruits on quality in Gia Lai and Dak Lak provinces, including 5 treatments: CT1 (the number of ripe fruits/spike > 75%), CT2 (the number of ripe fruits/spike > 50%), CT3 (the number of ripe fruits/spike…

The short-term effect of coffee husk biochar application in acidic soils on soil properties, root mycorrhization, pest, and disease management and yields in Robusta coffee and black pepper plantations in Gia Lai province, Vietnam(09/12/2025)

Abstract Vietnam is the world’s leading exporter of Robusta coffee and black pepper. However, the widespread use of intensive cultivation practices has contributed to progressive soil acidification and an increasing incidence of soilborne diseases, threatening the long-term sustainability of these high-value crops. This study evaluated the short-term effects of applying coffee husk-derived biochar (2.5 t ha−1) on soil quality, pathogen suppression, and crop performance in acidic soils of coffee and…

Soil properties influence the prevalence of soilborne pathogens in Robusta coffee and black pepper systems in Vietnam’s Central Highlands(04/12/2025)

PhD. Nguyen Van Long Abstract Monoculture and intensive fertiliser use in the cultivation of Robusta coffee (Coffea canephora var. Robusta) and black pepper (Piper nigrum L.) have led to soil degradation and increased disease pressure in Vietnam’s Central Highlands. To identify key factors driving soilborne diseases and threatening sustainable production, a soil and root survey was conducted across three provinces: Gia Lai, Dak Lak, and Dak Nong. Soils were characterised by high…

EFFECT OF ARACHIS PINTOI INTERCROPPED WITH BLACK PEPPER PLANTATIONS IN THE CENTRAL HIGHLANDS(10/09/2025)

Nguyen Van Long*, Vo Chi Cuong, Nguyen Do, Dinh Thi Ngoc Hanh Pepper Research and Development Center, 322 Truong Chinh, Hoi Phu Gia Lai. *Email: vanlongpleiku@gmail.com ; ĐT: 0935 493 127   ABSTRACT Pinto peanut (Arachis pintoi) is a versatile legume that helps protect soil, improve its physicochemical properties, and, significantly, fix nitrogen. The study aimed to identify the biomass, nutrient content, and the effects of Arachis pintoi mulch on soil…

Evaluating the Seed Propagation Potential of Selected Vietnamese Black Pepper Varieties (Piper nigrum)(06/06/2023)

ABSTRACT Sexual hybridation is primary method for black pepper breeding in order to select good varieties with higher productivity, yield, quality as well as resistance to disease and environmental risks. Research showed that white pepper seeds germinated after 13-27 days after incubation, most of seeds were germinated 15-23 days after incubation with 56,1-86,9% of seeds germinated. The three-month old seedlings of  H-DP6 and  H-L1 showed better growth with good plants…

(Tiếng Việt) Hội thảo tham vấn ý kiến chuyên gia về xây dựng mô hình OCOP dựa vào nội lực cộng đồng tại Đắk Lắk(04/08/2022)

Hội thảo tham vấn ý kiến chuyên gia về xây dựng mô hình OCOP dựa vào nội lực cộng đồng tại Đắk Lắk ThS. Đinh Thị Nhã Trúc, CN. Nguyễn Vũ Kỳ Sáng ngày 15 tháng 7 năm 2022, tại Viện Khoa học Kỹ thuật Nông Lâm nghiệp Tây Nguyên, Đơn vị chủ trì và nhóm nghiên cứu đã tổ chức Hội thảo tham vấn ý kiến chuyên gia về…

Completion of intensification technical process for avocado in Central Highlands(21/09/2021)

Lam Minh Van, Hoang Manh Cuong, Tran Van Phuc, Nguyen Xuan Hoa, Nguyen Thi Van Western Highlands Agriculture and Forestry Science Institute Booth 7 avocado has high yield, good fruit quality, good appearance, and late harvesting season, which is suitable for Central Highlands. To contribute to the development and improvement of avocado production, the research experiments to complete the intensive process of Booth 7 avocado were carried out from 2018…

Study on using enzyme preparations to produce high quality coffee bean (Arabica Coffee) in wet processing methods(20/09/2021)

Pham Văn Thao, Phan Thanh Binh, Nguyen Thi Thoa Western Highland Agriculture and Forestry Science Institute Study on using high-potency enzymes preparations to remove the viscous layer on parchment coffee is one of the contents of the project ''Improving preliminary processing and processing technology to improve the quality of green coffee, increase production value. Vietnamese coffee products ”. The experiments was carried out for 2 years (2018-2019) in Dak Lak…