Jorong Ganting Taram farmers cultivating rice using conventional systems, production is still low, namely ± 4.5 tons h-1 . The Ganting Malay Farmers Group is a pioneer to change the SRI method of rice cultivation with cow urine POC technology with EM4 activator and indigenous microbes. The purpose of implementing this community service is to increase rice production at a lower cost so as to increase yields and farmers' opinions. Activities are carried out in three ways: a) Socialization and Counseling, b). Training to make cow urine POC, c) SRI method rice demonstration plot with cow urine POC. The results of the socialization and extension of rice using the SRI and POC methods of cow urine with EM4 activator and indigenous microbes gave good value to the understanding of the material and the ability to implement. The training on making cow urine POC and applied to the rice demonstration plot using the SRI method increased the growth and yield of rice compared to the conventional system. Conclusion: SRI method of rice cultivation with cow urine POC technology increases rice yields and farmers' income.

Abstrak Ubi jalar (Ipomoea batatas L.) merupakan salah satu makanan pokok bagi sekelompok penduduk Indonesia, karena itu tanaman ubi jalar ikut memegang peranan penting di dalam posisi lumbung pangan nasional.  Permintaan akan ubi jalar semakin meningkat seiring meningkatnya jumlah penduduk.   Masalah utama yang dihadapi dalam kegiatan usaha tani ubi jalar adalah rendahnya produksi tanaman ubi jalar.  Salah satu penyebab rendahnya produksi ubi jalar adalah rendahnya ketersediaan hara bagi tanaman yang dipicu oleh pemakaian pupuk kimia secara terus menerus tanpa dibarengi penambahan bahan organik yang akan menganggu keseimbangan unsur hara di dalam tanah dan menurunkan produktifitas lahan.  Salah satu alternatif untuk mengatasi produktifitas lahan dengan penggunaan trichokompos kotoran sapi.  Trichokompos kotoran sapi mengandung unsur hara N 0,50%, P 0,28%, K 0,42%.  Penanaman ubi jalar menggunakan dua perlakuan yaitu penggunaan trichokompos kotoran sapi dengan dosis 5 ton/ha dan tanpa penggunaan trichokompos kotoran sapi.  Pertumbuhan tanaman diamati dan data hasil pengamatan diuji secara statistik menggunakan Uji t pada taraf nyata 5 % dan 1 %.  Berdasarkan hasil pengamatan, penggunaan trichokompos kotoran sapi menunjukkan pengaruh berbeda sangat nyata terhadap panjang sulur, jumlah cabang, panjang umbi, bobot umbi/rumpun dan berat brangkasan, akan tetapi berbeda tidak nyata terhadap jumlah umbi/rumpun dan diameter umbi.  Kata Kunci: kotoran sapi, trichokompos, ubi jalar   Abstract Sweet potatoes (Ipomoea batatas L.) is one of the staple foods for a group of Indonesians, therefore sweet potato plants play an important role in the position of national food barns.  The demand for sweet potatoes is increasing as the population increases.   The main problem faced in the business activities of sweet potato farming is the low production of sweet potato crops.  One of the causes of low sweet potato production is the low availability of nutrients for plants triggered by the continuous use of chemical fertilizers without the addition of organic matter which will disrupt the balance of nutrients in the soil and reduce land productivity.  One alternative to overcome land productivity with the use of cow dung trichocompost.  Trichocompost cow dung contains nutrients N 0.50%, P 0.28%, K 0.42%.  Planting sweet potatoes uses two treatments, namely the use of cow dung trichocompost with a dose of 5 tons/ha and without the use of cow dung trichocompost.  Plant growth is observed and observational data is statistically tested using test t at real levels of 5% and 1%.  Based on the results of observations, the use of cow dung trichocompost showed a very noticeable different effect on tendril length, the number of branches, length of bulbs, the weight of bulbs/clumps, and brangkasan weight, but differed not noticeably on the number of bulbs/clumps and the diameter of the bulbs. Keywords: cow dung, trichocompost, sweet potato

Trichoderma is a multifunctional fungus that is widely known and used as a biological control agent and a decomposer because of its ability to compete with pathogenic fungi and because it possesses cellulolytic enzymes that can decompose organic matters. This study was conducted to determine the presence and species of Trichoderma on the practicum land of Politeknik Pertanian Negeri Payakumbuh. The descriptive method was used to report the Trichoderma exploration conducted in two land locations, namely rice field and dry field. The exploration was not performed on a piece of land with healthy plants, but on one that has been used for >5 years. The results show that Trichoderma was found in both locations with the same percentage of presence of 20%. The species found was macroscopically and microscopically identified as Trichoderma harzianum. This antagonist agent demonstrated the ability to suppress Xantomonas campestris pv. oryzae by covering colonies of Xantomonas campestris pv. oryzae.

This research was conducted to answer the questions: 1) How is the KWT farming performance in Nagari Koto Tuo, and 2) Analyzing the factors that influence the farming performance in Nagari Koto Tuo in an effort to support family welfare. The study was conducted by taking a purposive sample on a group of women farmers (99 people) Tanjung Saiyo,

Bacterial compatibility testing is very important to determine which bacteria will be consorted as bio activators when making liquid organic fertilizer. Bacteria that are inoculated into the manufacture of liquid organic fertilizers must have a cooperative and synergistic relationship with fellow bacteria to be efficient in their role as bio activators. To obtain this potential, a compatibility test against bacterial isolates needs to be carried out so that liquid organic fertilizers will be made efficient and effective. The research purposes are to obtain the compatible properties of functional bacterial isolates and their impact on liquid organic fertilizer’s nutritional content. The study was carried out at the Plant Protection Laboratory and Greenhouse of the Payakumbuh State Agricultural Polytechnic, West Sumatra from July to September 2022. The research method began with the rejuvenation of the dry bacterial isolates of Pseudomonas aeruginosa, Bacillus subtilis, Bacillus cereus, and Bacillus thuringiensis. Followed by the compatibility test using the double culturing method, a total of 20 treatments with three replications. The bacterial consortium is inoculated into the manufacture of fertilizer. The results of the compatibility test against P. aeruginosa and genera of Bacillus showed all treatments were compatible which was indicated by the absence of a halo inhibition zone with a compatibility index value between 0.67-1 and could be combined in a consortium as a bio activator. The best P2O5, K2O, and Ca nutrient content is found in the formula of fertilizer with bone meal additives.