ORCID Profile
0000-0002-4707-0650
Current Organisation
Badan Riset dan Inovasi Nasional Republik Indonesia
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Publisher: Center for Journal Management and Publication, Lambung Mangkurat University
Date: 14-07-2016
Abstract: strong em ABSTRACT /em /strong em /em em Shallot cultivation in peat land was constrained by the high production costs, especially fertilizer and lime costs (Abdullah, 2011). Therefore, improvement of shallot productivity in peat land was to use local resources so that the production costs would be reduced. Potential material to be used for that purpose was sea mud which abundantly available in West Kalimantan. The productivity of several shallot varieties in peat land had not reached their production potential. The research used Randomized Block Design (RBD) with the treatment of sea mud consisted of without the treatment of sea mud (L sub /sub ) and with the treatment of sea mud (L sub /sub ) and several shallot varieties such as Bima Variety (V1), Manjung Variety (V2) and Sumenep Variety (V3). The research result showed that the treatment of sea mud and varieties of shallot differed significantly in improving the growth and production of shallot. Bima, Manjung and Sumenep each produced /em em .73 ton/ha, 12.84 ton/ha and 9.22 ton/ha respectively. Based on profit value and B/C ratio value, the utilization of sea mud in peat land was economically feasible to be applied by farmers in West Kalimantan. /em em /em em br / /em
Publisher: MDPI AG
Date: 04-10-2023
Publisher: Institut Pertanian Bogor
Date: 07-08-2018
Abstract: ABSTRACTMelon (Cucumis melo L.), one of the high-value fruits, has been started to expand by farmers but the heterogeneity in quality may constrain the development. This study aimed to improve the quality of melon in quartz-sand soil (Quartzipsamments). A field experiment based on the split-plot design was conducted on April to June 2016 in Kotawaringin Timur Regency, Central Kalimantan Province, using two factors comprising melon varieties and on-productive-stage fertilization. The varieties consist of Rio F1 (V1), Action 434 F1 (V2), Madesta F1 (V3), Dewo F1 (V4), Gracia F1 (V5), and Okasa F1 (V6). While four fertilization packages which have different dosage on each were tested, including control (P0), low (P2), medium (P3), and high (P3). The result indicated that either varieties or fertilizing significantly affected growth, yield, and the quality of melon. There was a significant interaction between varieties and fertilizing toward yield and quality. Madesta F1 is the only varieties which showed positive response along with increasing fertilizer dosage, and the highest weight (4.55 kg) occurred on the high fertilizing level (P3). While in regard to sweetness level, Rio F1 showed a positive response until medium fertilizing dosage (P2) and resulted in the highest sweetness level by 13.05 oBrix but decreased on the higher dosage (P3). The fruit weight slightly-negative correlated with total sweetness level where the increase in weight may reduce the sweetness level.Keywords: lowland, quartz sand, sweetness levelABSTRAKMelon (Cucumis melo L.) sebagai salah satu komoditas bernilai ekonomis tinggi mulai dikembangkan banyak petani, namun terkendala dengan kualitas buah yang beragam. Penelitian ini bertujuan untuk meningkatkan mutu buah melon di tanah pasir kuarsa (Quartzipsamment). Percobaan lapangan dengan Rancangan Petak Terbagi dilakukan pada bulan April hingga Juni 2016 di Kabupaten Kotawaringin Timur, Provinsi Kalimantan Tengah, dengan menggunakan dua faktor, yaitu varietas dan dosis pemupukan pada fase produktif. Faktor varietas terdiri atas: Rio F1 (V1), Action 434 F1 (V2), Madesta F1 (V3), Dewo F1 (V4), Gracia F1 (V5), dan Okasa F1 (V6). Sedangkan faktor pemupukan pada fase produktif terdiri atas: kontrol (P0), rendah (P2), sedang (P3), dan tinggi (P3). Hasil penelitian menunjukkan bahwa faktor varietas maupun pemupukan berpengaruh terhadap peubah pertumbuhan, hasil, maupun kualitas. Terdapat interaksi yang nyata antara varietas dan pemupukan terhadap peubah hasil maupun kualitas buah. Madesta F1 adalah satu-satunya varietas yang menunjukkan respon positif dengan meningkatnya dosis pemupukan, dengan bobot buah tertinggi sebesar 4.55 kg dicapai pada perlakuan dosis tinggi (P3). Untuk kemanisan buah, varietas Rio F1 menunjukan respon positif dengan adanya peningkatan dosis hingga dosis sedang (P2) dengan nilai kemanisan tertinggi di antara yang lain (13.05 oBrix), namun menurun pada dosis yang lebih tinggi (P3). Bobot buah berkorelasi negatif yang tidak terlalu erat dengan tingkat kemanisan total buah, semakin tinggi bobot cenderung menurunkan tingkat kemanisan buah.Kata kunci: dataran rendah, pasir kuarsa, tingkat kemanisan
Publisher: World Scientific Pub Co Pte Lt
Date: 09-2018
DOI: 10.1142/S2424835518500315
Abstract: Background: The Extensor Pollicis Brevis (EPB) is an extrinsic thumb muscle whose main function is extension of the first metacarpophalangeal joint (MCPJ). It is subject to significant anatomical variation and may be absent, vestigial or have an anomalous distal attachment. Clinical examination of EPB is notoriously difficult and no reliable test has yet been described. We propose a novel test for the accurate examination of EPB. We sought to clarify the anatomical variations of EPB and to validate our clinical test using human cadaveric anatomical tests. Methods: A structured literature review of all human cadaveric anatomical studies describing the attachments of EPB was performed using MEDLINE and Embase with the key words “Extensor Pollicis Brevis”. A cadaveric anatomical study was performed using 18 unembalmed upper limbs. Positive and negative tests were simulated by manipulating the tendons of EPB, Extensor Pollicis Longus (EPL) and Flexor Pollicis Longus (FPL). Changes in tendon tension and joint position were measured and recorded. The EPB anatomy was then determined by dissection. Results: Anatomical variations were present in the majority of wrists, with only 35% of EPB tendons having a distal attachment to the proximal phalanx alone. EPB was absent in 5% of specimens. There was a significant difference between the change in MCPJ position between a positive (36 degrees 95% CI 25 to 47 degrees) and negative (19 degrees 95% CI 14 to 25 degrees) clinical test (p = 0.002). Conclusions: The functional importance of EPB depends on its congenital architecture in addition to the functional demands of the patient. We report a novel clinical test which is effective in demonstrating the integrity of the EPB. A positive test result is observed when a change in MCPJ position that occurs while the interphalangeal joint is brought into flexion from full thumb extension is 25 degrees or more.
Publisher: EDP Sciences
Date: 2021
DOI: 10.1051/E3SCONF/202130601006
Abstract: In order to develop horticultural commodities, especially for shallots ( Allium ascalonicum L), Central Kalimantan province attempts to develop the areas as new agricultural centers on sub-optimal lands. Peatlands have been recognized as potential land for agriculture and shallot development has been carried out since 2013. For shallot, KCl fertilizer plays role in facilitating photosynthesis process, growth plant at the starting level, strengthen the stem and reduce yield decay. The objective of this study was to determine the effect of addition of KCL fertilizer on growth and productivity of shallots ( Allium ascalonicum L) in peatlands. This study was conducted in Palangka Raya starting from August 2019 to December 2019. Statistical approach used randomized block design (RBD) with 5 treatments and 4 replications. The treatments given involved without fertilization K0 = 0 kg/ha, K1 = 50 kg/ha, K2 = 100 kg/ha, K3 = 150 kg/ha, K4 = 200 kg/ha. Several parameters observed included plant height, number of leaves, number of tillers, weight of wet biomass, dry biomass and bulb weight. The results showed that the application with addition of KCl with dosage of 150 kg/ha showed a higher yield and it was significantly different from other KCl dosage treatments.
Publisher: Lembaga Publikasi Ilmiah dan Penerbitan Universitas Muhammadiyah Purwokerto
Date: 24-12-2020
DOI: 10.30595/AGRITECH.V22I2.8000
Abstract: Degraded peatlands typically have been cultivated by communities for agriculture. Ex ICCTF plot in Jabiren is considered as a degraded peatland since the area has been cultivated and drained for smallholder plantation. This study aimed to characterise the groundwater level and peat subsidence periodically over seven months of observation. It has been found that the groundwater level fluctuated from 50 cm to 150 cm below the peat surface, implying the deterioration of peat ecosystem. Based on the transect observation, the groundwater table seems to form a dome shape with the deeper level existed adjacent to the canal. The average peat subsidence was around 27 to 39 cm in cumulative since the subsidence stick installation. However, in the range of ten-month of observation, the peat subsidence was around 8.5 cm. The subsidence was higher on the location adjacent to the canal (25 m) compared to the farther one (100 m). The subsidence also fluctuated, notably in the wet season, indicating the influence of rain event to peat subsidence. Rewetting peatland was likely to result in reducing peat subsidence suggesting the importance of water management in peatland to recover degraded peatland.
Publisher: IOP Publishing
Date: 02-2021
DOI: 10.1088/1755-1315/648/1/012055
Abstract: Cultivating shallots on peat soils is quite challenging since it is considered less fertile regarding its high organic acid content and low nutrient availability. Trichoderma , as one of the plant-growth-promoting fungi (PGPF), is beneficial to promote shallots growth. However, there is still lack of information concerning its effectiveness and interaction effect with inorganic P fertilizer in peat soils. This study aimed to investigate the effect of Trichoderma application and P fertilization on the growth and yield of shallots on peat soils. A pot experiment arranged in a completely randomized design was conducted with two treatment factors. The first factor was P fertilizer comprised four application rates: 0, 100, 200, and 300 kg ha −1 . Meanwhile, as the second factor, Trichoderma treatment consisted of four application rates: 0, 2, 4, and 6 g plant −1 . The results showed an interaction effect of P treatment and Trichoderma on shallots growth and yield. A treatment combination of 2 g plant −1 Trichoderma without P fertilizer addition increased yield by 34% compared to control. This yield was relatively similar to 100 kg ha −1 P fertilizer without Trichoderma addition. It is proved that the Trichoderma application could reduce inorganic P fertilizer input.
Location: Indonesia
Location: Indonesia
No related grants have been discovered for Wahyu Adi Nugroho.