. Martias

Critical Level of Manganese in Soil and Leaves: It’s Relationship to Fruit Quality of Mangosteen (Garcinia mangostana L.)

. Martias, Bambang Hariyanto, Titin Purnama, . Nofiarli, Deni Emilda, . Hendri, Adha Fatmah Siregar, A. Kasno, Sri Yuliati, Desi Hernita, I. Gusti K. D. Arsana & Made J. Mejaya · Annual Research & Review in Biology · 2021

Manganese (Mn) is one of the essential micronutrients that plays a crucial role in plants' growth and development and is also considered a limiting factor for crop production. This study aimed to determine the critical level of Mn in soil and leaves for improving the quality of m...

Open access Research Article 10.9734/arrb/2021/v36i930427

Yellow Sap Contamination on Mangosteen (Garcinia mangostana L.) Fruit in Relation to Soil Calcium Contents and Plant Tissue

. Martias, Titin Purnama, . Riska, . Affandi, Sri Yuliati, Nini Marta, Tri Budiyanti, Deni Emilda, Dewi Fatria, . Hendri, I. G. K. D. Arsana, Ratna W. Arief, Robet Asnawi & Made J. Mejaya · Annual Research & Review in Biology · 2021

Yellow sap contamination (YSC) is one of the mangosteen quality constrain in Indonesia. Calcium is the prominent nutrient that influence the incidence of yellow sap contamination. A research with objective to observe the relationship between incidence YSC and Ca availability in s...

Open access Research Article 10.9734/arrb/2021/v36i930418

Increasing Rice (Oryza sativa L.) Productivity and Farmer’s Income through the Implementation of Modified Double Rows Planting System

Robet Asnawi, Ratna W. Arief, . Slameto, Reny D. Tambunan, . Martias, Made J. Mejaya & . Fitriani · Annual Research & Review in Biology · 2021

Rice (Oryza sativa L.) productivity in Indonesia is leveling off. The study aims to determine the effect of the Jejer Manten double rows modified planting system on the growth, productivity, and economic feasibility of the rice farming system. The study was conducted in Lampung P...

Open access Research Article 10.9734/arrb/2021/v36i830409

Farmers’ Preference of Cassava (Manihot esculenta Crantz) Varieties Introduced to Improve Plant Productivity in North Sumatra Province, Indonesia

Yudi Widodo, Ruly Krisdiana, Nila Prasetiaswati, Kartika Noerwijati, Arief Harsono, Didik Sucahyono, Tinuk S. Wahyuni, Titik Sundari, Made J. Mejaya, . Martias & I. G. K. D. Arsana · Annual Research & Review in Biology · 2021

A varietal testing had been undertaken in Pematangsiantar regency, North Sumatra province, Indonesia in 2015-2016. The objective of the study was to determine the preference of cassava growers to the introduced varieties compared to the existing cassava varieties. Twelve cassava...

Open access Research Article 10.9734/arrb/2021/v36i930422