Comparative study of RYNAN Smart Fertilizers and farmer’s practice on Choy Sum (Brassica sp.)


The Choy sum is a member of the genus Brassica of the mustard family, Brassicaceae.

RYNAN Agriculture - Growing Choy Sum using RYNAN Smart Fertilizers

Treatment Start Date: June 17, 2020
End Date: July 22, 2020
Growth Cycle: 30-35 Days
Soil Type: Loam Soil

Location: Long Duc Commune, Tra Vinh Province Vietnam
Region: Vietnam’s Mekong River Delta
Land use:
Intensive Land Farming

They are commonly used commonly in Asian cuisines. This vegetable is a quick-growing, herbaceous plant that prefers cooler climates ranging from 15°C to 25°C.

The Asia-Pacific vegetable market sales growth increased by 2.9% to $785.6B from 2013 - 2019, hitting record highs in 2019 (Source). As global consumption increases, the pressures on producing high-quality and profitable crops increases as well.

A comparative study was done to evaluate farmer’s practice in a farm located in Vietnam’s Mekong Delta region and RYNAN Smart fertilizers: RYNAN® Vetamate 27-08-08+TE (2% Humic) & RYNAN® Chitosan L100.

RYNAN Agriculture - Case study on Shallot available for download

Read the full RYNAN case study on Choy sum cultivation.


Choy Sum Case Study Available


Other RYNAN Smart Fertilizers Case Studies

RYNAN Agriculture - Using RYNAN Smart Fertilizers for Shallots case study

Case study 1.0 - Shallots


A comparative study was done to evaluate farmer’s practice in a farm located in Vietnam’s Mekong Delta region and RYNAN Smart fertilizers: NPK 16-16-16 on the culture of shallots.

RYNAN Agriculture - Peanut Case study

Case Study 3.0 - Peanut

Conducted by the Ministry of Agriculture and Rural Development of Tra Vinh Province & National Agriculture Extension Centre (NAEC) to ascertain best farm practices.

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