Abstract. Safitri YA, Hasanah U, Salamiah, Samharinto, Pramudi MI. 2019. Distribution of major diseases of shallot in South Kalimantan, Indonesia. Asian J Agric 3: 33-40. Shallot is a vegetable crop with high economic value, but its productivity in Indonesia is still relatively low. One of the causes is due to attack of the diseases. The research was conducted from November 2017 to April 2018, with the purpose of studying the distribution of major diseases of shallots in South Kalimantan. It consisted of field, laboratory, and greenhouse research. Field research involved the survey of shallots’ extensive planting in eight villages of six districts in South Kalimantan, disease symptoms, the broad of attack, and the collection of secondary data. Laboratory research included the isolation and identification of the pathogen causing diseases. The greenhouse research was conducted to perform the Postulate Koch test. The research result showed that there were two major diseases of shallots, namely Moler and Anthracnose. Pathogen causing Moler disease (Fusarium oxysporum) attacked shallot plant in six districts (Tabalong, Balangan, Tanah Laut, Kotabaru, Tapin, and Banjarbaru) and pathogen causing Anthracnose disease (Colletotrichum sp) attacked shallot plant in five districts (Tabalong, Balangan, Tanah Laut, Kotabaru, and Tapin).
We have studied the arthropods biodiversity in two paddy field ecosystems, namely, paddy field ecosystem using Integrated Pest Management (IPM) system and non-IPM paddy field ecosystem. This study was conducted from April 2011 -November 2011 in three locations, that is, Pasar Kamis village and Sungai Rangas village in Banjar regency, and Guntung Payung village in Banjarbaru city, South Borneo Province. In this study, we used insect nets, yellow sticky traps, light trap and pitfall trap to get the sample or catch the arthropods in one period of planting season. The arthropods caught were then classified into some classes: pest (herbivore), natural enemy (parasitoid and predator), and other arthropods. After that, the Species Diversity Index was determined using its Shannon -Wiener Index (H'), Evenness (e), Species Richness (R), and Species Similarity Index (IS). The sum of arthropods which have the characteristic of pest and parasitoid were higher in the IPM paddy fields than in the non-IPM paddy fields, and the sum of other arthropods were the same. The highest H' and e values were in the IPM paddy field in Pasar Kamis village. The IS value for each three locations were 77.5% in Pasar Kamis village, 93.42% in Guntung Payung village, and 78.76% in Sungai Rangas village.
Research on the production of chilli in utisol soil using organic household waste bokashi and NPK was conducted in Banjarbaru from February to June 2015. The research used Completely Randomized Design (CRD) with six treatments. The treatments were (P1) 100% NPK, (P2) 100% NPK + bokashi, (P3) 75% NPK + bokashi, (P4) 50% NPK + bokashi, (P5) 25% NPK + bokashi, (P6) 100% bokashi. 100% NPK and 100% bokashi were 250 kg ha-1 NPK and 10 t ha-1 bokashi respectively. The result showed that the aplication of treatments gave affected to height increase, number of nodes, first day of appearing flower, biomass, fruit number and weight of fresh fruit The combination of 75% NPK and organic household waste bokashi can be recomended as the best doses for production of chilli. Organic household waste bokashi can contribute to reduce 25% of NPK aplication on the production of chili.
Chili is one of the vegetable commodities that have excellent and promising business opportunities in Tajau Landung Village. In this village there are 16 farmer groups and 75% of them grow chilies, both large chilies and cayenne peppers. Pesticides and chemical fertilizers are the main production factors in chili farming. Prices and access to subsidized pesticides and chemical fertilizers are a constraint for farmers, and their residues have a negative impact on consumers and the environment. This activity aims to provide training to farmers in Tajau Landung Village to produce organic fertilizers and pesticides. The activity began with counseling about Chili Pests and Diseases and how to control them organically, as well as pretest and posttest using a questionnaire. The next activity was training on making bokasi fertilizer enriched with Trikoberas, and PGPR (Plant Growth Promoting Rhizobacteria). Based on the results of the evaluation, it was concluded that there was an increase in participants' understanding of chili pests and diseases and their control before and after being given counseling. %). Participants already have skills in making organic bokasi fertilizer from water hyacinth and kiyambang weeds, PGPR, and Trikoberas added to bokasi fertilizer to become Trikokompos, and showed very good acceptability assessment results.
Spodoptera pectinicornis is a biological control agent that has a great potential to control water lettuce weeds. Its existence in nature however is still limited, so a mass propagation is needed by rearing S. pectinicornis imagoes to produce eggs and to hatch them into larvae of 4 days old. The 4-year larvae were then released by putting water lettuces that contained active larvae into the target area. Observation results on the percentage of damage in the watershed location for 5 times of observation consecutively was 25%, 50%, 50%, 75% and 90%. The magnitude of damage showed that S. pectinicornis was able to adapt well, so it could perform eating activities and cause damage to the water lettuces. Meanwhile, at the release site of rice field, the percentage of damage was 0%, 25%, 35%, 25% and 10%. The downward trend in the level of S. pectinicornis attacks was due to its inability to keep pace with the growth and development of water lettuces. High level of rainfall caused the water lettuces to increase its size and the number of its tillers so that they could colonize these waters. The fact that S. pectinicornis still has the ability to destroy the water lettuces gives great hope to the control efforts. However, thorough evaluation and assessment are required on all aspects, such as the biological control agents, weed targets, organisms associated with them, and the state of the environment so as to minimize the possibility of failure in the field.
This research aimed to find a pattern of agroecosystem management that can increase arthropod diversity, production, and Return Cost Ratio (RCR) values in organic wetlands planted during the dry season. This research was set in Randomized Block Design (RAK) with seven treatments and five repetitions, namely: 1) Intercropping between green mustard and basil, with chicken manure and without<em> </em><em>Bacillus thuringiensis</em>; 2) Intercropping between green mustard and basil with water hyacinth compost, and without <em>B. thuringiensis</em>; 3) intercropping between green mustard and leek, given water hyacinth compost, and without application <em>B. thuringiensis</em>; 4)Intercropping between green mustard and leek, given chicken manure, and without application <em>B. thuringiensis</em>; 5) Intercropping between green mustard and leek, given chicken manure, and given <em>B. thuringensis</em> application, doubled of recommended dosage; 6) Intercropping between green mustard and leek with chicken manure, and <em>B. thuringensis</em> application according to recommended dosage; 7) Monoculture of green mustard without organic fertilizer and without the application <em>B. thuringiensis. </em>From this research, it was concluded that the pattern of agroecosystem management of green mustard that can increase arthropod diversity in organic wetlands planted during dry season was the intercropping treatment between green mustard with basil, together with chicken manure and without <em>B. thuringiensis</em>. Meanwhile, the pattern of agroecosystem management of green mustard that can increase the production of green mustard and RCR value on the organic wetlands planted in the dry season was the intercropping treatment between green mustard with leek, together with chicken manure, and without <em>B. thuringiensis</em>.
Rigidoporus Sp. is a white root fungus which is the main diseases problems on rubber plants in the wet and dry lands of South Kalimantan. An economically and ecologically beneficial control solution for this problem soil contagion was by using antagonistic fungi. This research was aimed to study the potential of rhizosphere and endophytic fungi in swampland, to control white root fungus on rubber plants. The research used exploratory method. Rhizospheric fungi were explored from swamp rubber plant roots at Pulau Damar village Hulu Sungai Utara District; endophytic fungi were isolated from leaves and jelutung swamps (Dyera lowii) which is rubber-like plants. The isolates found then were screened based on the percentage of inhibition using the dual culture method between pathogens and test isolates, also observed the interaction mechanism and viability test. The research in the laboratory was arranged using a Completely Randomized Design with one factor i.e. the type of antagonistic fungi. Five isolates which had the highest inhibitory power were isolates I13K4R, I7K3R, I1K2R, I6K2R, and I1E with successive inhibitions 95.00%, 83.00%, 76.50%, 62.50% and 53.00%. Thus, isolates have included potential antagonistic agents because they had the ability in space competition more than 50% and proven to be able to paralyze Rigidoporus. The viability test results showed that the isolate that had germination capability of more than 60% were respectively I13K4R 88.05%, I7K3R 87.33%, I1K2R 86.93%, I6K2R 72.85%, and I1E 74.78%.
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