Physiological, biochemical activities of cherelle wilt on three cocoa clones (Theobroma cacao) under two levels of soil fertilities

Hs, Endang Sri Dewi; Yudono, Prapto; Putra, Eka Tarwaca Susila; Purwanto, Benito Heru

doi:10.13057/biodiv/d210124

Cited by 3 publications

(10 citation statements)

References 22 publications

(26 reference statements)

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“…The clone used was the RCC 71 clone. The soil at the research location is low (0.043 ppm (Dewi HS et al, 2020b). The research was conducted from June 2018 to February 2019.…”

Section: Methodsmentioning

confidence: 99%

“…The Kjeldahl method was used for the estimation of the total nitrogen (N) (Dewi HS et al, 2020b), and Morgan-Wolf extraction was employed for the determination of boron (Dewi HS et al, 2020b).…”

Section: Nitrogen and Boron Content In The Leavesmentioning

confidence: 99%

“…The extract was utilized for chlorophyll estimation. The UVspectrophotometer read absorbance at 645 and 663 nm (Dewi HS et al, 2020b). Chlorophyll content was counted by Formula 1.…”

Section: Chlorophyll Contentmentioning

confidence: 99%

“…Chlorophyll a and chlorophyll b are very strong at absorbing light at a wavelength of 600-700 (red light) nm and slightly absorbing sunlight at wavelengths of 500-600 nm (green light) (Dewi HS et al, 2020a;Li & Chen, 2015). Chlorophyll b absorbs more photons than chlorophyll a, photons absorbed by chlorophyll b will be transferred to chlorophyll A. Chlorophyll is most commonly found in photosystem II (Dewi HS et al, 2020b). In Indonesia, there has been limited research on the role of boron in the physiological activity of cocoa plants.…”

Section: Introductionmentioning

confidence: 99%

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Physiological activities of cocoa trees induced by soil and foliar applications of boron fertilizer

Dewi HS,

Yudono,

Susilaputra

et al. 2023

Sains Tanah J. Soil Sci. Agroclimatology

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This study investigates the impact of boron fertilizer on physiological activities of cocoa trees, specifically focusing on boron content, nitrogen content, nitrate reductase activity, chlorophyll content, and photosynthesis rate in cocoa plant leaves. This research was arranged in a randomized complete block design with two treatment factors, which were the type of boron fertilizer application (soil and foliar fertilizer), and the dose of boron fertilizer (1.5, 3, 4.5, and 6 g plant−1 with 0 g plant−1 as a control). Data were then analyzed for variance differences (ANOVA) with α = 5%, followed by the Tukey test, and contrast orthogonal for comparing treated and control plants. The results showed that the dose of boron fertilizer and the type of fertilizer application used have a significant effect on the physiological activity of the cocoa plant. The dose of boron with soil application affects physiological activity in a linear pattern where each additional dose of boron will increase the activity of nitrate reductase, chlorophyll content, and photosynthetic rate. The dose of boron with foliar application affects physiological activity in a quadratic pattern, where the dose of boron in the range of 3 g plant−1 is the optimum dose that gives maximum results on nitrate reductase activity, chlorophyll content, and photosynthetic rate in the cocoa leaves. Therefore, it is considered that the application of boron fertilizer at a dose of 3 g plants−1 with the foliar application is more efficient in increasing physiological activity compared to the dose of boron with soil application.

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“…The clone used was the RCC 71 clone. The soil at the research location is low (0.043 ppm (Dewi HS et al, 2020b). The research was conducted from June 2018 to February 2019.…”

Section: Methodsmentioning

confidence: 99%

Section: Nitrogen and Boron Content In The Leavesmentioning

confidence: 99%

“…The extract was utilized for chlorophyll estimation. The UVspectrophotometer read absorbance at 645 and 663 nm (Dewi HS et al, 2020b). Chlorophyll content was counted by Formula 1.…”

Section: Chlorophyll Contentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physiological activities of cocoa trees induced by soil and foliar applications of boron fertilizer

Dewi HS,

Yudono,

Susilaputra

et al. 2023

Sains Tanah J. Soil Sci. Agroclimatology

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“…NRA positively correlates with chlorophyll content (Table 6) R 2 = 0.20. Dewi et al (2020) stated that the improved soil fertility directly affected to increase of chlorophyll content through nitrate reductase activity.…”

Section: Physiological Response Of Three Rice Varieties Underwater Depth In the Coastal Agricultural Landmentioning

confidence: 99%

The agro-physiological characteristics of three rice varieties affected by water depth in the coastal agricultural land of Yogyakarta, Indonesia

Nasrudin¹,

Kurniasih

2021

Biodiversitas

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Abstract. Nasrudin, Kurniasih B. 2021. The agro-physiological characteristics of three rice varieties affected by water depth in the coastal agricultural land of Yogyakarta, Indonesia. Biodiversitas 22: 3656-3662. Coastal agricultural land has many obstacles of abiotic stress for plant cultivation, including waterlogging, strong wind, and high salt concentration. Therefore, the use of adaptive rice varieties, as well as good land management, are expected to be a solution for rice cultivation in the coastal agricultural land. The objective of this study was to examine the agro-physiological characteristics of three rice varieties planted in coastal agricultural land which were affected by water salinity up to more than 10 dS m-1. This study was conducted from February to July 2017 at Tirtohargo, Bantul District, Special Region of Yogyakarta. The experiment was arranged in a split-plot design, with the depths of sunken-bed as a main plot consisted of 25 cm and 50 cm, and variety as a subplot consisted of IR 64, Inpara 4, and Dendang. The experiment results showed that Dendang had the highest growth and yield in coastal agricultural land compared to Inpara 4 and IR64. The highest value is indicated in plant height, leaf area, proline content, and productivity. The depths 50 cm of sunken-bed increased leaf area and proline content, whereas the depths of 25 cm sunken-bed increased productivity. Dendang showed better agro-physiological activity and had the highest productivity. The depths of 50 cm increased several parameters in agro-physiological characteristics, however, the depths of 25 cm increased grain yield. Among the varieties tested, in salinity, the highest growth and yield variables were shown by Dendang, followed by IR 64 and Inpara 4.

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Macronutrient Contents and Yield of Cocoa Resulting from Two Different Rejuvenation Techniques

Meilani,

Putra,

Indradewa

2023

Caraka Tani J. Sustain. Agric.

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Cocoa (Theobroma cacao L.) is one of Indonesia’s leading and important export commodities. The cocoa plant rejuvenation techniques aim to increase cocoa production and quality. Ring budding and side grafting can rejuvenate old and unproductive cocoa plants. Therefore, this research was conducted with objectives: 1) to record macronutrient contents, yield components and yields of three cocoa clones, KKM 22, RCC 70 and RCC 71, rejuvenated with ring budding and side grafting, 2) to determine the best techniques in rejuvenation program for old cocoa stand based on nutrient contents, yield components, and yields indicators of three cocoa clones. This research was carried out from November 2020 to January 2021 at Cocoa Plantation, North Segayung Production Unit, Pagilaran Company. The results showed that ring-budded plants had the highest N nutrients content in leaves, stem organic-C production capacity, pods number per stand per year, dry weight bean per stand per year and dry weight bean per hectare per year, which was significantly better than side grafted plants. The macronutrient of total parts (leaves, stem, and root) trend was leaves > stem > root. The trend of macronutrients in cocoa were organic-C > N > Ca > K > Mg > P. Based on the macronutrient content of cocoa tissue, KKM 22 have a higher content of organic-C, N, P, K, Ca, and Mg compared to RCC 71 and RCC 70. The budding ring technique was the best in the rejuvenation program for old cocoa stands based on nutrient contents, yield components, and yield indicators of three cocoa clones.

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Physiological, biochemical activities of cherelle wilt on three cocoa clones (Theobroma cacao) under two levels of soil fertilities

Cited by 3 publications

References 22 publications

Physiological activities of cocoa trees induced by soil and foliar applications of boron fertilizer

Physiological activities of cocoa trees induced by soil and foliar applications of boron fertilizer

The agro-physiological characteristics of three rice varieties affected by water depth in the coastal agricultural land of Yogyakarta, Indonesia

Macronutrient Contents and Yield of Cocoa Resulting from Two Different Rejuvenation Techniques

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