Effect of the Stimulating Paste Conservation Period and Economic Benefit of Ethrel-Palm Oil Mixture in Rubber Tree Plantations in South-Eastern Côte d’Ivoire

Obouayeba, Samuel; Soumahin, Eric Francis; Obouayeba, Abba P.; Adou, C; Essehi, Jean Lopez; Atsin, G. J. O.; Okoma, M

doi:10.9734/jeai/2016/26973

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…The average annual productivity of all designs and planting densities of our works is 1926 kg.ha -1 .year -1 . This yield is important and especially high since it is higher than the national average yield (1700 kg.ha -1 .year -1 ; Obouayeba et al, 2016. ) which is one of the best in the world.…”

Section: Discussionmentioning

confidence: 98%

Effect of design and planting density on the agrophysiological parameters of clone GT 1 <i>Hevea brasiliensis</i> Muell Arg in southwestern Côte d'Ivoire

Ballo¹,

Soumahin²,

Essehi³

et al. 2019

J. App. Bioscience.

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The design and planting density can influence certain agronomic parameters. To enable Hevea brasiliensis clone GT1 to better express their agrophysiological potentialities and sensitivity to the tapping panel dryness a study, of the design and planting density was undertaken at the SCASO experimental site in southwestern of Ivory Coast. The experimental design applied, split-plot of three treatments (designs in lines separated from 6 or 7 m and staggered) and three sub-treatments (350; 510 and 650 trees/ha) with four repetitions, was installed on 12, 22 ha. Only one latex collection system was applied (S/2 d/4 6d/7 ET 2.5 % Pa 1 (1) 6/y). The parameters measured were rubber production, circumference increase, physiological profile and tapping panel dryness sensitivity. The rate of trees present in the plots was good (87.27 %) and have not varied with the design and planting density. Vegetative growth tapping (2.69 cm.year-1), and mean yield (1926 kg.ha-1 .year-1) were influenced by density unlike design. Despite good productivity, the physiological state of the rubber trees was good, characterized by a well-balanced physiological profile and a low tapping panel dryness rate (2.73 %), independently of design and planting density. The density and the suitable planting design were planting in separate rows of 6 m / 650 t/ha.

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Section: Discussionmentioning

confidence: 98%

Effect of design and planting density on the agrophysiological parameters of clone GT 1 <i>Hevea brasiliensis</i> Muell Arg in southwestern Côte d'Ivoire

Ballo¹,

Soumahin²,

Essehi³

et al. 2019

J. App. Bioscience.

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“…The minimum value of Suc was around 0.4 mM in Putranto et al (2015) and the non-outlier maximum observation was 20.2 mM with an average of 9.2 mM. The highest outlier value was 46.3 mM in Obouayeba et al (2016) (Figure 3B.). We omitted the data from Setiono et al (2015), Attanayake et al (2018), andSyaher et al (2020), which consisted of extraordinary values up to 150.0 mM.…”

Section: Variability Of Ld Parameters In the Worldmentioning

confidence: 91%

“…Non-outlier RSH values ranged from 0.11 mM (Guo et al 2016;Lacote et al 2019) to 1.03 mM (Lubis et al 2020) with an average value was 0.51 mM, while the outliers reached 1.50 mM in Wei et al (2015) (Figure 3D.). The observation from Anushka et al (2020) was omitted due to its extremely low values up to 0.008 mM, while the observations from Commère et al (1988), Obouayeba et al (2016), and Sumarmadji and Tistama (2004) were excluded due to their overly high value up to 2.02 mM. The Suc exhibited the highest variation among LD parameters (coefficient variation was 72.9%), while TSC had the lowest coefficient variation (19.6%).…”

Section: Variability Of Ld Parameters In the Worldmentioning

confidence: 99%

A Meta-Analysis of Latex Physiology Studies Reveals Limited Adoption and Difficulties to Interpret Some Latex Diagnosis Parameters in Hevea brasiliensis

Junaidi¹,

Clément‐Vidal

Nuringtyas

et al. 2022

HAYATI J Biosci

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Latex diagnosis is widely adopted in natural rubber-producing countries to optimize the natural rubber production through a physiological-based latex-harvesting system management. This study is the first bibliographical searching and meta-analysis on the variation of latex physiological parameters i.e. sucrose, inorganic phosphorus, thiols, and total solid content. The study used information extracted from 158 scientific papers. Descriptive statistics, agglomerative hierarchical clustering, and principal component analysis were performed to characterize applications of latex diagnosis, how often parameters are used and interpreted as well as the variation of its parameter values. From 158 papers, latex diagnosis parameters were used in 114 agronomy, 22 in physiology, and 22 in breeding papers. The agglomerative hierarchical clustering analysis indicated that sucrose and inorganic phosphorus contents were clustered together and total solid and thiols contents were located in another cluster. The average values of the total solid content, sucrose, inorganic phosphorus and thiols were 43.9%, 9.4 mM, 16.5 mM, and 0.52 mM, respectively. The percentage of interpretation is 63.3% for sucrose, 54.4% for inorganic phosphorus, 47.5% for thiols, and 41.1% for the total solid content. The low interpretation of thiols and total solid contents question their relevance in latex diagnosis. The low adoption of latex diagnosis in breeding could hinder the selection of activities leads to a limitation of selection for long-term high yielding and stress-adapted clones.

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“…However, the production from bleeding alone cannot be adjusted to the needs of the users, nor can it be used to make better use of the rubber production potential of all the groups of clones cultivated because of their different laticigenic metabolism. Thus, in a systematic way, the actors add to the tapping system a strategy of hormonal stimulation of production in order to achieve sufficient production [10][11][12][13][14].…”

Section: Lowmentioning

confidence: 99%

Effect of Exogenous Hormonal Stimulation on the Metabolic Partition between Plant Growth and Rubber Production of Hevea brasiliensis Clones According to the Class of Metabolic Activity in Cote d'ivoire

Irénée¹,

Djézou

Mathurin

et al. 2021

ARJA

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Aims: In order to achieve a good and sustainable harvest of Hevea brasiliensis rubber, the effect of exogenous hormonal stimulation on the metabolic partition growth-production of clones according to the class of metabolic activity was made. Place and Duration of Study: The study was conducted for 9 years in the San-Pedro region in south-west Ivory Coast, precisely in the experimental industrial plantations of the former HEVEGO, now Southwestern Agricultural Civil Society Société (SCASO). Methodology and Results: The rubber trees were planted at a density of 510 trees/ha in a completely randomised system. They were bled in S/2 d4 and stimulated to 2.5% Etephon at annual frequencies of 0, 1, 2, 4, 6, 8, 13, 18, 26, 39 and 78. The parameters measured were rubber production, trunk circumference, sucrose content, inorganic phosphorus, thiol groups and dry notch rate. The results showed that productivity increased with the intensity of stimulation (58.96 - 68.49 g.a-1.s-1 ; 39.83 - 66.69 g.a-1.s-1) over the intervals [0.6] and [0.26] stimulations respectively in clones with active and slow metabolism. The circumference of the trunk was marked by a less pronounced decrease in growth in slow metabolizing clones (0.52%) with good protection of the laticigene system (R-SH : 0.815 mmol.l-1) and low sensitivity to dry notching (1.6). Whatever the classes of metabolic activity of the clones, the agrophysiological parameters were strongly correlated with each other by a degree 2 polynomial function. Conclusion: This polynomial function seems to reflect the existence of a good state of equilibrium between laticigenic metabolism and vegetative growth according to the class of metabolic activity of the Hevea brasiliensis clones.

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Effect of the Stimulating Paste Conservation Period and Economic Benefit of Ethrel-Palm Oil Mixture in Rubber Tree Plantations in South-Eastern Côte d’Ivoire

Cited by 3 publications

References 3 publications

Effect of design and planting density on the agrophysiological parameters of clone GT 1 <i>Hevea brasiliensis</i> Muell Arg in southwestern Côte d'Ivoire

Effect of design and planting density on the agrophysiological parameters of clone GT 1 <i>Hevea brasiliensis</i> Muell Arg in southwestern Côte d'Ivoire

A Meta-Analysis of Latex Physiology Studies Reveals Limited Adoption and Difficulties to Interpret Some Latex Diagnosis Parameters in Hevea brasiliensis

Effect of Exogenous Hormonal Stimulation on the Metabolic Partition between Plant Growth and Rubber Production of Hevea brasiliensis Clones According to the Class of Metabolic Activity in Cote d'ivoire

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