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Articles by Eko Widaryanto
Total Records ( 4 ) for Eko Widaryanto
  Eko Widaryanto and Akbar Saitama
  Background and Objective: The response of each sweet potato variety that was planted during the rainy season was significantly different. Some varieties showed high response to the environment with the components of vegetative growth especially on stems and leaves as shown from the observation. The purpose of this study was to determine the response of 10 varieties of sweet potatoes that were planted during the rainy season through the analysis of their growth and yield. It was conducted to know which varieties were able to adapt well and produce a high yield in the peculiar environment. Materials and Methods: This study was conducted using a Randomized Block Design with three replications and comprised ten varieties of sweet potatoes viz: Papua, Sollosa, Jago, Kidal, Antin-1, Sari, Sawentar, Beta-2, Antin-2, Antin-3 and Beta-1. The data were analyzed by one-way analysis of variance (ANOVA) at 5% level and for a significant effect followed Fisher’s Least Significant Differences (LSD) test at the 0.05 probability. Result: The results showed that the optimum Leaf Area Index (LAI) of sweet potatoes were found when the sweet potatoes entered the age of 3 MAP. The LAI of Sawentar variety showed the value of 7.23, while varieties Sari and Beta-2 were in the optimum limit of LAI response. This is proved by the growth of vegetative organs which reached the highest when entering the age of 3 months after planting. To inhibit the crop growth rate of vegetative organs, shoots pruning at age of 3 MAP should be done, therefore the assimilates can be translocated to the tubers as generative organs. This study found some varieties having high production such as Sari and Papua Sollosa varieties. Conclusion: The yield of the sweet potato varieties on the experiment showed a negative correlation to the leaf area and LAI, in which to achieve high productivity, low LAI value is required. Sari variety is recommended to be grown at the dry land during rainy season, by using this treatment sweet potato yield could produce 44.76 t ha–1.
  Eko Widaryanto , Amanda Humaidah , Akbar Saitama and Akbar Hidayatullah Zaini
  Background and Objective: Pummelo can be propagated by using many methods including seedling, cutting, air layering, grafting and culturing tissue. One of them is driven by the technique of accelerating scion growth. This study aimed to find out the proper scion growth acceleration techniques for growing the grafted scion. Materials and Methods: The research was conducted from March-June, 2017. This study used Randomized Block Design (RBD) with 6 treatments and 4 replications including B0 (no treatment), BAL (bending the rootstock above the inserted scion), BAP (cutting off the rootstock 2 cm above the inserted scion), BAK (cutting half the rootstock 4 cm above the inserted scion), BAR (cutting half of the rootstock 4 cm above the inserted scion and bending it) and BAPL (cutting the rootstock 20 cm above the inserted scion and bending it). The obtained observation data were analyzed by using F-test (5%). If there was a significant effect, then LSD test (5%) was conducted. Results: The results showed that cutting the rootstock above the inserted scion and bending the rootstock above the inserted scion had significantly accelerated the growth of the scion of grafted Pummelo plants compared to other treatments. Bending the rootstock above the inserted scion resulted in the longest scion length at the end of the observation (90 days) by 15.2 cm, compared to cutting the rootstock above the inserted scion which resulted smallest growth of 98%, less than bending the rootstock for length of 8.96 cm. Conclusion: The treatment of cutting and bending the rootstock above the grafting area accelerates the rupture of the buds of the pummelo plants resulted from the grafting compared to other treatments.
  Eko Widaryanto , Karuniawan Puji Wicaksono and Hilyatun Najiyah
  Background and Objective: Water is an important factor for the crop growth and development, mainly under the drought condition. The cultivation of Cucumis melo requires water both at vegetative and generative phase which are taking role for metabolic and physiological processes. Further, there are reports that melon development requires different volume of water between vegetative and generative phase. The objective of this study was to investigate the amount of water which is required to the different growth phase of melon variety Apollo to simulate the effect of drought on this changing climate. Materials and Methods: This study conducted on April, 2015 until June, 2015 in screen house using randomized block design consisting of 9 combinations of treatments and with 3 replications. The treatments include: V1G1 [water supply 100% FC (field capacity) in vegetative and generative phase], V1G2 (water supply 100% FC in vegetative phase, 75% FC in generative phase), V1G3 ( water supply 100% FC in vegetative phase, 50% FC in generative phase), V2G1 (water supply 75% FC in vegetative phase, 100% FC in generative phase), V2G2 (water supply 75% FC in vegetative phase, 75% FC in generative phase), V2G3 (water supply 75% FC in vegetative phase, 50% FC in generative phase), V3G1 (water supply 50% FC in vegetative phase, 100% FC in generative phase), V3G2 (water supply 50% FC in vegetative phase, 75% FC in generative phase) and V3G3 (water supply 50% FC in vegetative phase, 50% FC in generative phase. Analysis of the data used in this study is the analysis of variance F-test with a level of 5%. If there is significant effect on the treatment, LSD (least significant difference) is conduct at the level of 5%. Results: The results of this study showed that drought simulation to 50% both in vegetative and generative decrease 50% performance of growth of melon. However, on harvest parameters, 25% drought simulation on just vegetative phase increased 1% of yield, 559.33 g from 549.11 g (control). Conclusion: While simulating 25% drought only to generative phase, increased the level of sweetness from 14.59-15.98% or increased 9% compare to control.
  Evy Latifah , Eko Widaryanto , Moch Dawam Maghfoer and Ariffin
  Background and Objective: Small eggplants called Gelatik as an alternative substitute for tomato rootstocks are local eggplants that are widely available and can be easily obtained by conventional farmers. The main objective of this study was to examine the influence of water logging durations on various growth phases of tomatoes grafted on local eggplants. Materials and Methods: The experiment was conducted between February and December 2017. The design used was Randomized Block Design (RCBD) consisting of two factors and three replications. Factor I was the grafting of Cervo variety tomatoes onto different rootstocks and Factor II was the water logging pressure at different growth phases. Results: Gelatik rootstocks (BL) treated with B2V, B2B, B2H and B4V resulted insignificant differences in leaf area, plant height and weight of fruit from that of EG 203 line rootstock. EG 203 line (BEG) resulted in significantly higher than Gelatik (BL) rootstock in terms of proline level during fruiting phase (B2H, B4H). Biplot analysis showed the positive correlation between water logging tolerance score and the content of proline. Conclusion: The local eggplant rootstocks (Gelatik) which were water logged for up to 2 days did not show any significant difference from the recommended eggplants. Therefore, the EG 203 line can be planted under a substituted condition of sandy soil and rainy season condition.
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