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Journal : Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)

PENGARUH PEMBERIAN LUMPUR BUANGAN DARI PENGOLAHAN LIMBAH SINTESIS ANTIBIOTIKA DAN PUPUK KANDANG TERHADAP PERTUMBUHAN DAN PRODUKSI STEVIA (Stevia rebaudiana BERTONI M.) Slamet Susanto; Muhammad Syukur
Indonesian Journal of Agronomy Vol. 27 No. 2 (1999): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (710.008 KB) | DOI: 10.24831/jai.v27i2.1574

Abstract

The objective of the research was to investigate the effect of sewage application on growth and production of stevia, a sweetening alternative producing plant, as compared with manure application. Sewage is a by product of antibiotics processing of PT SBFI Sewage and manure application each consisted of 4 level, i.e. 0.0, 0.5, 1.0 and 1.5 kg per polybag. Sewage application has resulted in significant increase in tree high, leaf number, shoot number and root and shoot dry weight as compared with control. Manure application has resulted in significant increase in growth and production as compared with control. There was no interaction between sewage and manure application on all parameter observed
Respon Morfo-fisiologi Empat Genotipe Cabai Rawit (Capsicum frutescens L.) terhadap Cekaman Salinitas Baiq Arriyadul Badi'ah; Sobir; Muhammad Syukur; Yudiwanti Wahyu Endro Kusumo
Indonesian Journal of Agronomy Vol. 49 No. 2 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.365 KB) | DOI: 10.24831/jai.v49i2.37006

Abstract

The responses of cayenne pepper to salinity need to be elucidated for developing saline tolerant varieties. The study aimed to reveal the morphological and physiological responses of four cayenne pepper genotypes under salinity stress conditions. The research was conducted at the Tajur 2 experimental station of IPB University, Bogor, Indonesia, from October 2019 to March 2020. A two-factor randomized complete block design with five blocks as replications was used in this experiment. The first factor is the genotype of cayenne pepper (Sigantung, CR10, CSR1, and CRK1) and the second factor is salinity level (0-1, 2-4, 5-7, and 8-10 mS cm-1). The results indicated that the salinity significantly affected the morphological and physiological traits of cayenne pepper plants. Salinity 8-10 mS cm-1 on morphological traits caused the highest decrease in the number of flowers (74.65%), number of leaves (71.23%), fruit weight (58.48%), and root length (49.81%). In addition, a concentration of 8-10 mS cm-1 also caused the highest decrease in physiological traits. The highest effect of the treatment occurred in stomata conductance (29.37%), transpiration rate (26.47%), intercellular CO2 concentration (21.83%), and chlorophyll index (20.19%). Based on the average value of the stress sensitivity index (ISC), the Sigantung (1.2) and CSR1 (1.0) genotypes were categorized as salinity sensitive (ISC >1.0). On the other hand, CR10 and CRK1 had an average ISC value of 0.8, so they were categorized as the moderate tolerance to salinity (0.5<ISC<0.1). Keywords: stomatal conductance, intercellular CO2 concentration, stress sensitivity index, root length