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All Journal Plumula : Berkala Ilmiah Agroteknologi

Wiwik Sri Harijani

Program Studi Agroteknologi, Fakultas Pertanian, UPN “Veteran” Jawa Timur

Author-ID : 2662527

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Energy Immunology & microbiology Materials Science & Nanotechnology

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KEANEKARAGAMAN MIKROORGANISME RHIZOSFER DALAM MENEKAN TINGKAT SERANGAN PENYAKIT BULAI PADA TANAMAN JAGUNG DI KABUPATEN JOMBANG Paramitha Pasaribu; Herry Nirwanto; Wiwik Sri Harijani
Plumula : Berkala Ilmiah Agroteknologi Vol 7 No 1 (2019): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

One of the most constraint factors among corn farmers, which can cause enormous losses to corn farmers in Indonesia is the downy mildew disease. Losses due to this disease can achieve a loss of up to 90%, controlling of plant pathogens is currently still based on the use of synthetic pesticides, whereas the use of synthetic pesticides on a continuous basis can cause various negative impacts. The negative impact of the use of synthetic pesticides is large enough for the environment one of them is the killing of non-target microorganisms such as fungi and antagonistic bacteria located on the ground especially in the rhizosphere of plants.Therefore need to be followed up research on antagonistic fungus/non parasite for plants derived from rooting corn plant, as a control against pathogen infection. The diversity of microorganisms is important in the balanciation of soil ecosystems. This research aimed to find out the relationship of diversity of microorganisms with the level of maize crop disease, and to know the difference the diversity of rhizosphere microorganisms in corn plantations on different land. The relationship between the diversity of microorganisms and the level of maize crop disease attacks the greater the diversity of microorganisms in the corn crop area, the lower the incidence rate of gallbladder disease. Conversely, the lower the number of microorganisms diversity in the corn crop area will be the higher the rate of bouts disease. The highest diversity index was found in Caruban Village of 1.0983, while the lowest diversity index was found in Sumbersari village of 0,5505, and the lowest level of seizure disease was found in Caruban Village 0.96%, while the highest rate of disease was in Desa Sumbersari by 50%.

POTENSI JAMUR ENTOMOPATOGEN Metarhizium anisopliae, Beauveria bassiana dan Streptomyces sp. TERHADAP MORTALITAS Lepidiota stigma PADA TANAMAN TEBU Aditya R. Hidayah; Wiwik Sri Harijani; Wiludjeng Widajati; Dina Ernawati
Plumula : Berkala Ilmiah Agroteknologi Vol 7 No 2 (2019): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Sugarcane is a plant which only grow in tropical. Plant pests and plant diseases in cultivation have never been separated. One of the important pests of sugarcane is uret root destroyers (Lepidiota stigma). The pests can reduce crop yields by 50%. One of the best alternatives for uret pest control which can be safety and environmentally friendly by using biological agents. The biological agents for pests control has a good potential and prospects because they are host-specific and harmless to human. This study was conducted to determine the effectiveness of Metarhizium anisopliae, Beauveria bassiana and Streptomyces sp.mortality Lepidiota stigma. This study used 3 treatments in a completely randomized design (CRD) with each repeated 9 times. The results showed that for four observations at intervals of seven days of observation. The ability of three biological agents has different varieties in turning off the test insect, this is indicated by the highest mortality percentage of M. anisopliae with total mortality of 88.89%.

FORMULASI BIOFERTILIZER GRANULAR BERBAHAN MIKROBA Trichoderma sp. Rizky Nur Affandy; Herry Nirwanto; Wiwik Sri Harijani
Plumula : Berkala Ilmiah Agroteknologi Vol 7 No 2 (2019): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Granular formulation of Trichoderma sp. is a fertilizer containing live microorganisms that are given to plants useful in providing nutrients needed in plant growth and as biological agents. This study aims to determine the effect of giving granular formulations of Trichoderma sp. as a biofertilizer in chili plants. This study used a completely randomized design (CRD) with 4 treatments repeated 6 times. This test uses the shelf life of the Granular Trichoderma sp. Formulation. 7 weeks old. The stages of the study included making suspension of Trichoderma sp., making granular formulations of Trichoderma sp., The preparation of the application of granular formulations on chili plants. The results showed that the granular formulation of Trichoderma sp. the compost carrier can act as the most effective biofertilizer in influencing the height, number of leaves, and dry weight in chili plants.

MODEL PERKEMBANGAN PENYAKIT BULAI PADA BERBAGAI VARIETAS DI KABUPATEN MOJOKERTO Khansa Amara; Herry Nirwanto; Wiwik Sri Harijani; Latief Imanadi
Plumula : Berkala Ilmiah Agroteknologi Vol 8 No 1 (2020): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Peronosclerospora spp. is one of the problems in the cultivation of maize in Indonesia. Damage caused by the fungus Peronosclerospora spp. can reach 90-100% especially in susceptible varieties. Abiotic environmental conditions such as low temperatures and high humidity accompanied by a layer of water on the leaf surface can increase the occurrence of disease. Disease management techniques are still dominated by the application of synthetic fungicides that have several negative impacts, such as killing non-target organisms, increasing pathogen resistance and environmental pollution. However, these impacts can be suppressed through monitoring activities that play a key role in integrated disease management programs. Monitoring activities facilitate the process of epidemiological analysis through a mathematical model approach so that it can be known patterns of development of plant diseases and the rate of infection as a basis in developing disease management strategies. Therefore, it is necessary to conduct research on disease development models ranging from maize varieties in the improvement of maize plants in Mojokerto Regency. The results showed a model that was able to represent the development of downy mildew in Mojokerto was monit. The highest infection rate was on land using P35 variety from other land using NK 6172 variety.

MODEL PERKEMBANGAN PENYAKIT BULAI DENGAN VARIABEL BUDIDAYA DI KECAMATAN PURI KABUPATEN MOJOKERTO Nindias Oktavia Wulandari; Herry Nirwanto; Wiwik Sri Harijani; Latief Imanadi
Plumula : Berkala Ilmiah Agroteknologi Vol 8 No 1 (2020): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Downy mildew is a major disease in maize plants in Indonesia. It was reported that yield losses due to downy mildew ranged from 50%-80% in some areas of maize production center. Efforts are made to control downy mildew disease by conducting tillage, crop rotation, intercropping, use of fungicides, and irrigation affect the development of downy mildew. Therefore, efforts to deterimine the most effective control of downy mildew need to be carried out more extensive research, one of which is by looking at the downy mildew development models based on different cultivation variables that aim to find out the variables that influence the high and low incidence of downy mildew in Mojokerto. the results show that the model that is able to represent the development of downy mildew in Mojokerto was monomolecular. The incidence of the disease using varieties P35, NK 7328, NK 6172, NK 212 shows the category of mild attacks and varieties of Bisi 18 shows the category moderate attacks. Tillage is a way of cultivation that influences the low incidence and infection rate of downy mildew in Puri, Mojokerto.

Co-Authors Aditya R. Hidayah Dina Ernawati Herry Nirwanto Khansa Amara Latief Imanadi Nindias Oktavia Wulandari Paramitha Pasaribu Rizky Nur Affandy Wiludjeng Widajati

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