Red pepper production in 2016-2017 was increased. Although production has increased, demand for pepper will continue to increase, and efforts to increase soil fertility still need to be sought. To maintain and increase soil productivity, a combination of inorganic fertilizers with appropriate organic fertilizers is needed. One of the organic fertilizers is biofertilizers. This research aimed at finding out the formulation and dosage of biological fertilizers consortium of cellulolytic bacteria based on organic liquid waste that was appropriate for the growth and yield of red pepper plants. This research method used a Completely Randomized Design with 12 treatments, namely (5, 10, 15) ml of biological fertilizer of waste water washing rice, (5, 10, 15) ml of biological fertilizer of coconut water waste, (5, 10, 15) ml of biological fertilizer of tofu water waste, (5, 10, 15) ml of palm oil liquid fertilizer. The results showed that all biological fertilizer application based on organic liquid waste cellulolytic was able to give varied results on each parameter observed so that all wastes could be applied to pepper plants. Tofu wastewater biofertilizer with a dose of 10 ml give a good response to the production of pepper plants compared to other treatments.

One of the organisms that helps in decomposition of oil palm empty fruit bunches is Oryctes rhinoceros L. larvae. This is because of in the gut of the larvae there are many cellulolytic bacteria and lignoliytic. The process of accelerating the decomposition of oil palm empty fruit bunches into compost can be done by optimizing the work of the bacteria. The aim of this research is to obtain cellulolytic and lignolytic bacteria from larvae O. rhinoceros L.. The research succeeded to isolate 24 isolates of cellulolytic bacteria and lignolytic bacterial isolates from the gut of O. rhinoceros larvae. Based on qualitative test, 9 isolate bacteria produced cellulolytic index above 2. The highest cellulolytic index was generated by ORL19 isolate, while the lignolytic index obtained ORL6 isolate. Based on macroscopic and microscopic identification of bacteria, biochemical and physiological tests,  it was found ORL 6 belongs to the genus Bacillus sp. while the ORL 19 belongs to the genus Citrobacter sp..

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Limitations of productive land causing agricultural extension leads on marginal land. Peatlands are one type of land including the criteria for marginal land. Destruction of peatland ecosystems arising from land management and the selection of one commodity which is not in accordance with the characteristics of peatland. Damage criteria peat in government regulations to function cultivation is more than 0,4 m below the peat surface. One alternative for the agricultural development of peatlands associated with groundwater levels ≤0,4 m to do with the development of food crops, especially rice crops. This is because the root system of the rice crop is only about 40-50 cm categorized shallow roots, thus suitable for development on peatland shallow. This study aims to determine the response growth and yield of rice plants with organic and inorganic fertilizer application by microbial cellulolytic on peat soil. The experimental was conducted from November 2017 to January 2018 in Laboratory of Soil Science and Plant Laboratory, Faculty of Agriculture at Universitas of Riau. The research was conducted using a completely randomized design (CRD), which consists of 7 treatments and 4 replicates so on May 28 experimental units. As for the treatment Control, 50% inorganic fertilizer, 100% inorganic fertilizer, 80 grams of composted rice straw, 160 grams of litter rice straw + 160 ml consortium of microbes, 80 grams of composted rice straw + 50% inorganic fertilizer, 160 grams of rice straw litter + 160 ml of microbial consortium selulitik + 50% inorganic fertilizer. The results showed that addition of 160 g of rice straw litter + 160 ml of microbial + 50% inorganic fertilizer consortium was the best treatment by producing tillers reaching 54,87 tillers, the number of grain per panicle reached 130.57 grains with crop grain weight reaching 57.27 grams, with a percentage of empty the lowest is 3.62%.

AbstrakRendahnya produktivitas tanaman padi maupun hortikultura di desa Langsat Permai Kecamatan Bunga Raya Kabupaten Siak salah satunya disebabkan karena belum tersedianya air yang cukup untuk budidaya tanaman sehingga perlu dilakukan pengelolaan tata air dengan pembuatan canal blocking untuk dapat dimanfaatkan pada tanaman padi maupun tanaman hortikultura di daerah tersebut. Hal ini dilakukan untuk memenuhi kebutuhan air pada tanaman padi maupun hortikultura apalagi pada saat musim kemarau. Oleh karena itu, dilakukan pendampingan melalui kegiatan IbDM pengelolaan tata air di Desa Langsat Permai Kecamatan Bunga Raya Kabupaten Siak. Selain pengadaan air, peningkatan budidaya pertanian dapat dilakukan dengan memanfaatkan limbah jerami untuk dijadikan kompos dan pakan ternak sehingga dapat membentuk pertanian terpadu antara aspek pertanian dan peternakan. Strategi pendampingan dilakukan dengan berdiskusi secara langsung dengan kelompok tani mengenai dampak pembuatan canal blockingdan praktek langsung dalam pembuatan kompos dan pakan ternak. Melalui kegiatan ini sangat terlihat antusias masyarakat dalam pelaksanaan kegiatan IbDM yang dilakukan melalui peningkatan motivasi masyarakat untuk pengembangan tanaman pangan dan hortikultura serta lebih memanfaatkan jerami padi untuk kompos dan pakan ternak.Kata Kunci : canal blocking, jerami padi, kompos, pakan ternak AbstractThe low productivity of rice crops and horticulture in Langsat Permai village, Bunga Raya subdistrict, Siak regency is caused by the lack of sufficient water for the cultivation of plants, so it is necessary to manage the water system by making canal blocking to be used in rice crops and horticultural crops in the area. This is done to meet the water needs in rice crops and horticulture especially during the dry season. Therefore, assistance is done through the activities of IbDM water management in the Village Langsat Permai District Bunga Raya Siak District. In addition to water supply, improved agricultural cultivation can be done by utilizing the waste of straw to be used as compost and animal feed so as to form an integrated agriculture between aspects of agriculture and livestock. Advisory strategy is conducted by discussing directly with farmer groups about the impact of canal blocking and direct practice in composting and animal feed. Through this activity is very visible enthusiastic community in the implementation of IbDM activities conducted through increased community motivation for the development of food crops and horticulture and more use of rice straw for compost and animal feed. Keywords: Canal Blocking, Rice Straw, Compost, Animal Feed

The low productivity of paddy in Langsat Permai Village, Bunga Raya District, Siak Regency, one of them is causes the unavailability of sufficient water for crop cultivation, so it is necessary to do water management by making canal blocking to be used on rice plants in the area. This is done to meet the water needs of rice plants during the dry season. Therefore, assistance is provided through water management in Langsat Permai Village, Bunga Raya District, Siak Regency. Mentoring strategies are carried out by discussing directly with farmer groups about the impact of making canal blocking. Through this activity, the availability of water for rice plants during the dry season is fulfilled. Production of 1 Ha of rice before the blocking canal produced 4-5 tons/harvest to 6-7.8 tons/harvest after the canal blocking.

The decline in oil palm production can be caused by pest attacks. The main pest that attacks oil palm is the horn beetle. Control is usually done by using chemical pesticides. The use of chemical pesticides can cause resistance, resurgence, destruction of natural enemies, and environmental pollution. The use of chemical insecticides can be minimized by using environmentally friendly and sustainable control alternatives, namely by using the local entomopathogenic fungus B. bassiana. This study aimed to obtain the best dose of local B. bassiana Vuill in controlling O. rhinoceros larvae in immature oil palm plantations in Sei Siasam, Rokan Hulu Regency, Riau Province. The study was carried out in Sei Siasam, Rokan Hulu Regency and the Plant Pest Laboratory, Faculty of Agriculture, University of Riau. Completely Randomized Design with five treatments doses of local entomopathogenic fungus B. bassiana 30 g/hole, 35 g/hole, 40 g/hole, 45 g/hole, 50 g/hole and four replications, in order to get 20 experimental units. The results showed that the application of local Riau B. bassiana at a dose of 40 g/hole was the best dose capable of causing death of 72.5%. Early death 77 hours after application and Lethal time 50 180.75 hours after application.

Rice production in Riau Province is lower than demand. One of the efforts made is the use of organic fertilizer based on organic liquid waste, in addition to reducing the use of inorganic fertilizers. The method that can be applied to support rice yield is the use of cellulolytic bacterial consortium applications. This study aimed to finding out the formulation and dose of biological fertilizer based on cellulolytic bacteria based on the organic liquid waste that was good for growth and yield of upland rice. This research used a Completely Randomized Design which consisted of 12 treatments, namely of biofertilizer of rice washing water, biofertilizer of coconut water, biofertilizer of wastewater tofu, biofertilizer of palm oil mill with doses 5, 10, 15 ml. The result showed that all biofertilizers based on organic wastewater cellulolytic consortium could provide varied results on all parameters of observation so that all biological fertilizers could be applied to upland rice plants with the use of inorganic fertilizers at half the recommended dose. Biofertilizers from rice washing water with a dose of 10 ml gave a good response to the growth and yield of upland rice compared with other treatments.