Received: 09-07-2020
Accepted: 25-09-2020
DOI:
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Determining Amount of Microbio-Organic Fertilizer Replacing Inorganic Fertilizer Suitable for Safe Leafy Vegetable Production in Summer-Autumn Season in Northern Vietnam
,
Pham Van Cuong
1, 2
,
Tran Thi Thiem
1
,
Bui Ngoc Tan
1
,
Ha Thi Quynh
2
Keywords
microbio-organic fertilizer, inorganic fertilizer, water spinach, Indian spinach, Northern
Abstract
This study aimed at determining suitable amount of microbio-organic fertilizer (MF) replacing inorganic fertilizer for safe leafy vegetable production in Summer-Autumn season in Northern Vietnam. The study was carried out at safe vegetable production areas of four provinces, viz. Ha Noi, Hoa Binh, Hung Yen and Ha Nam. One factor experiments were laid out on water spinach and Indian spinach according to randomized complete block design (RCBD) with 4 treatments (CT1: 100% inorganic fertilizer - control, CT2: 75% inorganic fertilizer + 25% MF, CT3: 50% inorganic fertilizer + 50% MF, andCT4: 25% inorganic fertilizer + 75% MF) and 3 replications. The results showed that replacing 25% inorganic fertilizer for water spinach and 50% inorganic fertilizer for Indian spinach by using microbio-organic fertilizer gave significantly higher growth and yield of these two leafy vegetables compared to other treatments. Applying microbio-organic fertilizer replacing inorganic fertilizer increased Vitamin C, total carotenoid, carbohydrate and reduced the nitrate residue in water spinach and Indian spinach.
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