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Journal : Caraka Tani: Journal of Sustainable Agriculture

The Correlation and Regression Analysis of The Growth and Physiological Parameters: How Paclobutrazol Increases Bulb Yield on Three Cultivars of True Shallot Seed Elizani, Prahesti; Sulistyaningsih, Endang
Caraka Tani: Journal of Sustainable Agriculture Vol 34, No 2 (2019): Caraka Tani in Press October 2019
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (65.183 KB) | DOI: 10.20961/carakatani.v34i2.29148

Abstract

True Shallot Seed (TSS) is a planting material for shallots in the forms of seeds. It shows a visual appearance of the fresh green shoot even though in the harvest season. This condition indicates that TSS still has potential assimilates which should be optimized for bulbs formation. Paclobutrazol is increasing assimilate translocation from source to sink by activating the sucrose transporter enzyme and changing the phytohormones balance. The study aimed to find out how paclobutrazol increased bulb yield on TSS by analyzing the closeness in the relationship between and the influence of physiological property variables and growth analysis. The study was conducted at Gadjah Mada University experimental field, Yogyakarta, from September to November 2017. It was arranged in a Randomized Complete Block Design with three replications. The first factor included the paclobutrazol concentration (0, 15, 30 and 45 mg L-1), while the second one included TSS cultivars (Tuk Tuk, Sanren and Lokananta). Correlation and regression were used in the data analysis. The results revealed that paclobutrazol significantly affected the physiological properties and the growth of TSS, instead of cultivars. Regression analysis showed that the effect of the concentration of the applied paclobutrazol formed quadratic pattern, where most observed variables had a positive correlation with shallot productivity. Paclobutrazol increased bulb yield by maintaining shoot biomass duration (SBD) and chlorophyll content which had a positive and linear effect on plant growth rate (PGR). The PGR might increase bulb yield per planting hole and indirectly increase its productivity. Paclobutrazol application at 15-30 mg L-1 could be used to improve bulb yield in TSS.
Growth, Yield and Resistance Responses of Three Cultivars on True Seed Shallots to Twisted Disease with Salicylic Acid Application Wijoyo, Rachmanto Bambang; Sulistyaningsih, Endang; Wibowo, Arif
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): Caraka Tani in Press April 2020
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (113.711 KB) | DOI: 10.20961/carakatani.v35i1.30174

Abstract

Twisted disease is one of the main diseases on shallot caused by Fusarium sp. One method to increase the resistance of shallot cultivars to the twisted disease can be performed by using True Seed Shallot (TSS) combining with a salicylic acid application. TSS is known as free pathogen. The objective of the research was to examine the effects of a salicylic acid application to the growth, yield and resistance responses of TSS on Tuktuk, Sanren and Lokananta cultivars to the twisted disease. The research was arranged in factorial Completely Randomized Design (CRD), consisting of two factors with three replications. The first factor included Tuktuk, Sanren and Lokananta cultivars and the second factor comprised salicylic acid applications (without salicylic acid and inoculation, without salicylic acid with inoculation, immersion treatment of salicylic acid with inoculation, spray treatment with inoculation as well as immersion and spray treatment with inoculation). The results showed that the application of salicylic acid in different treatments had the same effects on the growth, yield and resistance of TSS. An interesting result is found, in which the application of salicylic acid by immersing and spraying could reduce the incidence of twisted disease by 12.5% in TSS. Therefore, the application of salicylic acid by immersing and spraying can be one of the recommended twisted disease management.
Co-Authors Agus Budi Setiawan, Agus Budi Amalia T Sakya Anto Rimbawanto Ari Setiyaningrum Arif Wibowo AYPBC Widyatmoko, AYPBC Azis Purwantoro Aziz Purwantoro Bambang Hendro Sunaminto Bambang Hendro Sunarminto Benito Heru Purwanto Dharmayanti, Krisna Dharmayanti, Krisna Didik Indradewa Eka Tarwaca Susila Putra, Eka Tarwaca Susila Eko Hanudin Elizani, Prahesti ENDANG PUDJIHARTATI Fenti Effendi Hardiansyah, Arizal Nur Hardiansyah, Arizal Nur Harper, Stephen Harper, Stephen Hartati, Dwi Hidayat Pujisiswanto Ika Rahmawati Indah Permanasari khusnul khotimah Kori Yati, Kori Kurniasih, Budiastuti Kurniasih, Budiastuti Lucitasari, Dyah Rachmawati Maria Marina Herawati Muhammad Anshar Murrinie, Endang Dewi Murrinie, Endang Dewi Muryasani, Ayu Ainullah Nasrullah Nasrullah Nopen Simamora Nugroho, Joko Budi Santoso Nugroho, Joko Budi Santoso Nursyaifuloh ", Nursyaifuloh Pangestuti, Retno Prakoso, Dhimas Ikhsan Prakoso, Tangguh Prapto Yudono Prisiska, Fahjar Prisiska, Fahjar Priyono Suryanto Purwanto, Benito Heri Puspita, Andin PUTRI WULANDARI Rajiman Rajiman Rani Agustina Wulandari, Rani Agustina Rini Rosliani Rivandi Pranandita Putra, Rivandi Pranandita Safitri, Wiji Safitri, Wiji Siti Subandiyah Sri Lestari, Rohimah Handayani STEFANY DARSAN, STEFANY Suci Handayani, Suci Sulistio, Margo Suryaningndari, Damar Suryaningndari, Damar Susila Putra, Eka Tarwaca Suwarto Suwarto SUWIJIYO PRAMONO Syahri, Muhammad Taryono Taryono Taufiq Hidayat Tohari Tohari Tuhuteru, Sumiyati Tuhuteru, Sumiyati Wibowo, dan Arif Wijoyo, Rachmanto Bambang Yudo Swasono