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All Journal Jurnal Ilmu Pertanian jurnal Ilmu Pertanian (Agricultural Science)
Didik Indradewa
Department of Agronomy, Faculty of Agriculture, Universitas Gadjah Mada Jln. Flora no. 1, Bulaksumur, Sleman, Yogyakarta 55281, Indonesia
Agriculture, Biological Sciences & Forestry

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Yield and yield components of superior cocoa (Theobroma cocoa L.) clones rejuvenated by ring budding technique Resti Utari Wahyudi; Eka Tarwaca Susila Putra; Didik Indradewa
Jurnal Ilmu Pertanian Vol 8, No 1 (2023): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.71385

Abstract

The ring budding technique gave a higher suitability for rejuvenation of cocoa plants compared to side cleft grafting it can be combined with the use of superior clones for optimal production. However, information related to this is still limited. The research aimed to determine the effects of ring budding technique on yield components and yields of three types of superior cocoa clones. The experiment was arranged in a Nested Design. The first factor is the type of vegetative propagation technique, consisting of side cleft grafting and ring budding. The second factor was clones, which consisted of clones KKM 22, RCC 70 and RCC 71. Clones were nested in vegetative propagation. The research was conducted from September 2020 to January 2021 at the Pagilaran Company. Observations were made on several yield component variables. The data were analyzed using Analysis of Variance (ANOVA) and continued with the Least Significant Difference Test (LSD) at the 5%. The results showed that the number of pods and the weight of beans per cocoa stand were significantly higher in the ring budding technique than the side cleft grafting. This condition caused the dry bean weight per hectare much higher as well. The three cacao clones, which were rejuvenated by ring budding, gave a good response and high yields. Meanwhile, only KKM 2 gave good response and high yield after treated with side cleft grafting technique, while  RCC 70 and RCC 71 clones gave low yields. The KKM 22 clone is the best option in terms of rehabilitation with ring budding and side cleft grafting.
Effects of rice husk charcoal on the resistance of Jali (Coix lacryma-jobi L.) to drought stress during generative phase Qaanitatul Hakim Ipaulle; Didik Indradewa; Siti Nurul Rofiqo Irwan
Jurnal Ilmu Pertanian Vol 8, No 1 (2023): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.75079

Abstract

The production of jali (Coix lacryma-jobi L.) under stress can be increased by the application of a soil enhancer, called rice husk charcoal.  This study aimed to determine the effect of rice husk charcoal on the yield of jali plants under drought stress and to determine the minimum soil water content from the interval time of watering to ensure that plants can still produce grains. The treatment (interval time watering and weight of rice husk charcoal) was arranged in a split-plot design. The main plot was the interval time of watering, consisting of 3 levels: every two days, every four days, and every six days. The weight of rice husk charcoal as sub-plots consisted of 3 levels: 0 t ha⁻¹, 10 t ha⁻¹, and 20 t ha⁻¹. The data were analyzed using analysis of variance (ANOVA) and further tested using Duncan Multiple Range Test (DMRT) at a significance level of 5%. The results showed that rice husk charcoal could not increase the yield of jali plant under drought stress. Jali plants could still produce grains at a watering interval time of every six days with a minimum soil moisture content of 11.85%, or equivalent to 35.54% of field capacity.
Yield and yield components of superior cocoa (Theobroma cocoa L.) clones rejuvenated by ring budding technique Resti Utari Wahyudi; Eka Tarwaca Susila Putra; Didik Indradewa
Jurnal Ilmu Pertanian Vol 8, No 1 (2023): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.71385

Abstract

The ring budding technique gave a higher suitability for rejuvenation of cocoa plants compared to side cleft grafting it can be combined with the use of superior clones for optimal production. However, information related to this is still limited. The research aimed to determine the effects of ring budding technique on yield components and yields of three types of superior cocoa clones. The experiment was arranged in a Nested Design. The first factor is the type of vegetative propagation technique, consisting of side cleft grafting and ring budding. The second factor was clones, which consisted of clones KKM 22, RCC 70 and RCC 71. Clones were nested in vegetative propagation. The research was conducted from September 2020 to January 2021 at the Pagilaran Company. Observations were made on several yield component variables. The data were analyzed using Analysis of Variance (ANOVA) and continued with the Least Significant Difference Test (LSD) at the 5%. The results showed that the number of pods and the weight of beans per cocoa stand were significantly higher in the ring budding technique than the side cleft grafting. This condition caused the dry bean weight per hectare much higher as well. The three cacao clones, which were rejuvenated by ring budding, gave a good response and high yields. Meanwhile, only KKM 2 gave good response and high yield after treated with side cleft grafting technique, while  RCC 70 and RCC 71 clones gave low yields. The KKM 22 clone is the best option in terms of rehabilitation with ring budding and side cleft grafting.
Effects of rice husk charcoal on the resistance of Jali (Coix lacryma-jobi L.) to drought stress during generative phase Qaanitatul Hakim Ipaulle; Didik Indradewa; Siti Nurul Rofiqo Irwan
Jurnal Ilmu Pertanian Vol 8, No 1 (2023): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.75079

Abstract

The production of jali (Coix lacryma-jobi L.) under stress can be increased by the application of a soil enhancer, called rice husk charcoal.  This study aimed to determine the effect of rice husk charcoal on the yield of jali plants under drought stress and to determine the minimum soil water content from the interval time of watering to ensure that plants can still produce grains. The treatment (interval time watering and weight of rice husk charcoal) was arranged in a split-plot design. The main plot was the interval time of watering, consisting of 3 levels: every two days, every four days, and every six days. The weight of rice husk charcoal as sub-plots consisted of 3 levels: 0 t ha⁻¹, 10 t ha⁻¹, and 20 t ha⁻¹. The data were analyzed using analysis of variance (ANOVA) and further tested using Duncan Multiple Range Test (DMRT) at a significance level of 5%. The results showed that rice husk charcoal could not increase the yield of jali plant under drought stress. Jali plants could still produce grains at a watering interval time of every six days with a minimum soil moisture content of 11.85%, or equivalent to 35.54% of field capacity.
Co-Authors Eka Tarwaca Susila Putra Qaanitatul Hakim Ipaulle Resti Utari Wahyudi Siti Nurul Rofiqo Irwan