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Helda Syahfari

Publications (5)

The Effects of Mutiara Grower NPK Fertilizer and Floraone Biofertilizer on the Growth and Yield of Cauliflower (Brassica oleracea var. botrytis L.) PM 3000 F1 Variety

Helda Syahfari, Oktavia Aulia Fransiska, Marisi Napitupulu, Abdul Fatah & A. Syamad Ramayana · Asian Journal of Agricultural and Horticultural Research · 2026

The objectives of the experiment were (1) to determine the effect of NPK Mutiara Grower fertilizer and Floraone biofertilizer as well as their interaction on growth and yield of cauliflower PM 3000 F1 variety; and (2) to identify the appropriate dose of Mutiara Grower NPK fertili...

Open access Research Article 10.9734/ajahr/2026/v13i3491

Antibacterial Activity of Ethanol Extract of Gotu Kola (Centella asiatica L.) Leaves against Pseudomonas solanacearum: Phytochemical Study and Bioactivity Testing

Helda Syahfari, Rifki Ihsan Saputra, Zikri Azham & Saibun Sitorus · Asian Journal of Agricultural and Horticultural Research · 2025

Pseudomonas solanacearum bacteria can cause wilt disease in tomatoes, chilies, tobacco, potatoes, and Solanaceae plants in general. The use of synthetic pesticides to treat wilt disease can cause negative impacts on plants, humans, and the environment, so it is necessary to find...

Open access Research Article 10.9734/ajahr/2025/v12i1354

The Effect of Chicken Manure and NOT Lau Kawar on the Growth and Yield of Cucumber (Cucumis sativus L.) Zatavy F1 Variety

Galih Rian Rohimat, Helda Syahfari, Hery Sutejo, Marisi Napitupulu, Abdul Fatah & Puji Astuti · Journal of Agriculture and Ecology Research International · 2025

Cucumber is one of the commodities that has very good prospects for development, because cucumbers are widely needed by the community and provide many benefits for humans and also because of high market demand. However, the development of cucumber plants has obstacles, namely man...

Open access Research Article 10.9734/jaeri/2025/v26i2665

Rainfall Variability and Lowland Rice (Oryza sativa L.) Productivity in Tenggarong Seberang District

A. Syamad Ramayana, Rapika Dewi, Suria Darma Idris, Eliyani & Helda Syahfari · Journal of Agriculture and Ecology Research International · 2026

Rice (Oryza sativa L.) is a primary food crop in Indonesia, playing a crucial role in meeting the population's food needs. Its productivity is heavily influenced by climatic conditions, particularly rainfall, which serves as the main water source for rain-fed paddy fields. Rainfa...

Open access Research Article 10.9734/jaeri/2026/v27i4778

The Effect of Chicken Manure and NPK Grower Fertilizer on the Growth and Yield of Purple Eggplant (Solanum melongena L.) Laguna F1 Variety

Marisi Napitupulu, Abdul Fatah, Reza Handayani, Noor Jannah, Helda Syahfari & A. Syamad Ramayana · Asian Journal of Soil Science and Plant Nutrition · 2025

The purpose of this experiment was to determine the effect of Chicken Manure and NPK Grower fertilizer and their interaction on the growth and yield of the Laguna F1 purple eggplant variety, and to obtain the appropriate dosage of Chicken Manure and NPK Grower fertilizer for the...

Open access Research Article 10.9734/ajsspn/2025/v11i4629