Kartika Utami

Utilizing Melastoma Compost (Melastoma malabatrichum L.) as a Sustainable Alternative to Synthetic Nitrogen Fertilizers in Shallot Cultivation

Dinna Khoirya, Nanik Setyowati, Zainal Muktamar, Kartika Utami, Marwanto & Sumardi · International Journal of Plant & Soil Science · 2025

Aims: This study explores the potential of Melastoma compost (Melastoma malabatrichum L.) as a sustainable alternative to synthetic nitrogen fertilizers in shallot (Allium ascalonicum L.) cultivation. Study Design:  This study was conducted from July to October 2024 at the Green...

Open access Research Article 10.9734/ijpss/2025/v37i25316

Sustainable Urban Farming: Effects of Organic Manure on Lettuce Growth and Soil Fertility

Salsabilla Dewi Satriani, Yulian Yulian, Nanik Setyowati, Supanjani Supanjani & Kartika Utami · Asian Journal of Agricultural and Horticultural Research · 2025

Rapid urbanization has reduced available agricultural land, creating an urgent need for sustainable food production systems such as urban organic farming. This study aimed to evaluate the effects of manure type and dosage on lettuce (Lactuca sativa L.) growth and yield under urba...

Open access Research Article 10.9734/ajahr/2025/v12i4429

The Availability of Soil N, P, K, and Mustard Yield after the Application of Liquid Organic Fertilizer from Household Waste in Ultisols

Zainal Muktamar, Vikra Zanovid, Bandi Hermawan, Anandyawati, Kartika Utami & Nanik Setyowati · International Journal of Plant & Soil Science · 2024

Ultisols are one of the dominant soil orders in Indonesia, accounting for approximately 25% of the total land area. The main problem of this soil is high aluminum (Al) saturation with low pH and plant nutrients. The study was intended to determine the effect of liquid organic fer...

Open access Research Article 10.9734/ijpss/2024/v36i54510