High rainfall and soil tillage without applying soil and water conservation techniques (WCT) have led to higher runoff and erosion and washed away top soil that is rich in nutrients needed by plants. This causes soil fertility to decrease over time. This study aims to examine the differences in growth and productivity of Arabica coffee that  the uses of rorak and without rorak. This research was conducted in the farmer's garden which is incorporated in the Barokah farmer group Sungai Jernih Village Gunung 7 District and Mekar Sari Village Kayu Aro District Kerinci Regency from May to July 2019. The experimental design used was unformatted trials and the location of the experiment was chosen intentionally (purposive) with the reason that in that area there are objects to be examined, namely coffee cultivation land that uses rorak and which does not use rorak. The treatment in this study was, Ro: land using rorak and R1: land without rorak. Vegetative and production variables observed included stem circumference (cm), leaf color, fruit weight with a sample of 100 chery coffees per tree (g) and soil variables including soil pH, soil moisture, nutrient content N, P, and K. The results of the study showed that making rorak produced differences in stem circumference, soil moisture content, nutrient content of N, P, K and soil pH as well as land productivity. Land using rorak yields 1047.61 kg / ha / year grenbeen and land without rorak 683.89 kg / ha / year grenbeen.Keywords: rorak, productivity of Arabica coffee

Cultivation of oil palm is inseparable from pests. One of the main pests that attack oil palm plants is  the rat class which can cause  oil palm plantations get a high losses. The aim of this study was to determine the attacktion  intensity of  the bush rat (Rattus sp) in   Oil Palm smallholder at  Suko Awin Jaya Village, Muaro Jambi Regency. The research was carried out from February to April 2021 at the oil palm smallholder specifically  farmer group“Ridho Ilahi”. The experimental design was  unformated trials, and the location was purposively  chosen. The location determination of the sample was based on to  the initial survey that there was found     rats attacktion in this place. Sampling was carried out concurrently at the time  fresh fruit bunches harvesting,   fruit counting in the bunch, counting the number of fruits eaten by rats, counting good fruit (free from rat pest attacks), and weighing the weight of fresh fruit bunches. Parameters observed were the attacktion  level in the land, attacktion  intensity, production per hectare, environmental sanitation conditions. The rats attacktion  rate of  100%, means that all sample  in one stretch of   plantation  have been   attackted by rats, it was indicated by a bite scars on the harvested fresh fruit bunches. The attacktion intensity of the bush rat pest was 23%. The average production was 21.6 tons/hectare/year. The sanitation conditions on the land was partially overgrown with weeds and there were piles of midrib in the area between the certain two path of oil palm tree.

This research was carried out in Panca Mulya Village, Sungai Bahar District, Muaro Jambi Regency, Jambi Province since August to September 2017. The material that used was weathering stems of oil palm that already previously replanting by 6 to 7 months, while the tools that used was the Global Positioning System (GPS) with Garmin GPSmap 78s as its brand, plastic bag, holding tool, camera, and stationery. This research was carried out by survey methods applying. Samples was collected from the replanting areas of both underplanting and chipping method, respectively 2 blocks with 3 locations each block had 200 m distance to North direction with 0.2 kg weight. Secondary data was collected from a company and Indonesian Agency for Meteorological, Climatological and Geophysics (Badan Meteorologi, Klimatologi, dan Geofisika or simply BMKG) while primary data was an interviews with farmers using a questionnaire. The collected data were : general description of research location, rainfall, temperature, humidity, soil acidity, C-N ratio of oil palm stem both before and after decomposition, from the replanting of both underplanting and chipping methods. The result of this study showed that C-N ratio of oil palm stem before decomposition was 58.42, C-N ratio of oil palm stem decomposition that replanting with underplanting method was 37.18, and the average C-N ratio of chipping method was 14.24. Be equaling with the compost quality specifications on Indonesian national Standar (Standar Nasional Indonesia (SNI) 19-7030-2004, so C/N value of decomposition process of oil palm stem that replanting by chipping method was already meet this standard with 10 to 20 as a C/N grade. Keywords ; C-N ratio, oil palm, replanting methodPenelitian ini dilaksanakan di desa Panca Mulya, kecamatan Sungai Bahar, kabupaten Muaro Jambi, Jambi pada bulan Agustus sampai September 2017. Bahan yang digunakan adalah hasil pelapukan batang Kelapa sawit yang sudah direplanting 6 sampai 7 bulan sebelumnya, sedangkan alat-alat yang digunakan adalah Global Positioning System (GPS) merek Garmin GPSmap 78s, kantung plastik, alat pengambil bahan, kamera, dan alat tulis. Penelitian ini dilaksanakan dengan metode survey, sampel dikumpulkan dari areal replanting metode sisipan dan matode pencincangan, masing-masing 2 blok pada 3 titik setiap blok jarak 200 m arah utara dengan berat 0.2 kg. Data sekunder dikumpulkan dari perusahaan atau BMKG dan wawancara dengan petani menggunakan kuisioner. Data yang dikumpulkan adalah ; informasi umum lokasi penelitian, curah hujan, suhu, kelembaban, pH tanah, rasio C-N batang Kelapa sawit sebelum dekomposisi, serta rasio C-N hasil dekomposisi.dari replanting metode sisipan dan pencincangan. Hasil penlitian menunjukkan nisbah C-N batang Kelapa sawit di daerah penelitian sebelum dekomposisi 58,42, rasio C-N dekomposisi batang Kelapa sawit replanting dengan metode sisipan rata-rata 37.18, dan metode pencincangan rata-rata 14,24. Bila disetarakan dengan spesifikasi kualitas kompos SNI 19-7030-2004, nilai C/N proses dekomposisi batang Kelapa sawit hasil replanting metode pencincangan sudah memenuhi standar dengan nilai C/N 10 sampai 20.Kata kunci ; rasio C-N, Kelapa sawit, metode replanting

The presence of pollinatting insect is an unseparated part in oil palm cultivation. The insect population and its diversity   will affect the pollination process that will produce a good   fruit. This study aimed to determine and study the population as well as the species diversity of pollinating insects on smallhoulder oil palm plantations in Rantau Kapas Bukit Paku Village, Batanghari Regency. Unformated Trials  was carried out  as the experimental design and the location was porpusively chosen because there were plants under study and were uniform in  that location.The method used was a descriptive survey method, which deal with  observing the types and numbers of pollinating insects caught at the sample locations in smallholder oil palm plantations aged 6 years. Catching pollinating insects used Kairomix pheromone traps. The results of the study showed that there were 18,301 species of E kamerunicus  and 478 species of Thrips hawaiiensis  pollinated insects were caught, while 378 non-pollinated insects were caught in the oil palm plantation area in the Bukit Paku area. The general morphology of the fruit was Tenera fruit type, with the average of Fresh Fruit Bunch (FFB) weight as 9.4 kg.

Multiple cropping merupakan sistem budidaya tanaman yang dapat meningkatkan produktivitas lahan. Peningkatan ini dapat diukur dengan besaran Nisbah Kesetaraan Lahan (NKL) atau LER (land Equivalent Ratio). Penelitian ini bertujuan untuk mengamati pertumbuhan dan produksi tanaman tumpang sari Pinang dengan Kelapa Dalam, menentukan nilai nisbah kesetaraan lahan (NKL) serta menentukan model tanam tumpang sari Pinang dengan Kelapa Dalam yang baik. Penelitian ini dilakukan di kelurahan Sabak Ulu serta di desa Siao Dalam kecamatan Muara Sabak Timur kabupaten Tanjung Jabung Timur dengan kondisi lahan gambut. Penelitian ini menggunakan metode survey pada lahan-lahan petani yang ditanami Pinang monokultur dan Pinang tumpang sari dengan Kelapa Dalam. Parameter yang diamati meliputi jarak tanam (m), tinggi tanaman (m), lingkar batang (cm), umur mulai produksi (th), produktivitas buah Pinang dan Kelapa secara tumpang sari (ton per ha), produktivitas buah Pinang dan Kelapa tunggal (ton per ha), dan produktivitas lahan (NKL). Untuk menjawab hipotesis yang diajukan, data dianalisis secara deskriptif dalam bentuk tabulasi. Hasil penelitian menunjukkan produksi tanaman Pinang dan Kelapa Dalam sistem tunggal lebih besar dari sistem tumpang sari. Namun berdasarkan perhitungan nilai nisbah kesetaraan lahan (NKL) menunjukan nilai lebih dari 1, menggambarkan bahwa sistem tumpang sari lebih menguntungkan dibandingkan sistem tunggal. Kata kunci ; produksi tanaman, nisbah kesetaraan lahan, tumpang sari