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

One of the barriers in the cacao caltivation is pest attacking of  “hama penggerek Buah Kakao (PBK) that caused by conopomorpha cramerella . Cocoa pod was broke caused by PBK larvae by making a hole under the cover, beans and white pulp of cacao pod. It causes a hard cohering among beans and hard embedded the beans in its white pulp on an unripe cacao pod. The broken cocoa pod becomes wrinkled and emergence a dark color around the cocoa pod cover which resulting a decrease of weight and its quality.The attacking level was  strongly determined by its farm maintenance conditions. This study aimed to know the attack level of cocoa pod in Betung Village, Muaro Jambi Regency .The studies had been started since June until August 2017.This research applies a survey method and completed by purposive sampling to find the sample .The sample location category was based on the more than four years of age and was being producting. The suffered cocoa pod sited around the tertiar branch of the plant that showed a very low intensity as much as 2,36 %. The infected cocoa pods were located on all the part of the cocoa trees trunk e.g. the primary, secondary , and tertiary branchs which showed the very high intensity as much as 95,67 %.  It’s because of the farm passing on, where there is neither branches cutting down nor taking out the falling leaves and fruit on the ground; and also neither fertilizing nor pest controling.Keywords : Attacking Intensity, fruit pest, conopomorpha cramerellaSalah satu kendala dalam pengembangan tanaman kakao adalah serangan hama penggerek buah kakao (PBK) yang disebabkan oleh Conopomorpha cramerella. Kerusakan buah kakao disebabkan oleh larva PBK dengan cara membuat liang gerekan di bawah kulit buah dan di antara biji serta memakan daging buah. Pada buah yang relatif muda, hal itu menyebabkan biji melekat pada kulit buah dan melekat satu sama lain. Biji yang rusak mengeriput dan timbulnya warna gelap pada kulit biji yang mengakibatkan turunnya berat dan mutu produk. Tingkat serangan sangat ditentukan oleh kondisi pemeliharaan kebun. Penelitian ini bertujuan untuk mengetahui tingkat serangan penggerek buah kakao di Desa Betung Kabupaten Muaro Jambi. Penelitian telah dilakukan mulai bulan Juni sampai dengan Agustus 2017. Penelitian ini menggunakan metode survei dan pengambilan sampel secara purposive random sampling (metode acak terpilih). Kriteria menentukan lokasi sampel yaitu pertanaman kakao yang berumur lebih dari empat tahun dan telah berproduksi. Buah kakao yang terserang terletak pada cabang tersier dengan intensitas serangan yang sangat rendah yaitu sebesar 2,36 %. Buah kakao yang terserang terletak pada semua bagian batang kakao yaitu di cabang primer, sekunder, dan tersier dengan intensitas serangan yang sangat tinggi yaitu sebesar  95,67 %. Kebun kakao dibiarkan begitu saja, tidak adanya pemangkasan terhadap cabang dan ranting, tidak adanya pembersihan terhadap daun buah yang gugur, tidak adanya pemupukan, dan juga tidak adanya pengendalian terhadap penggerek buah.Kata kunci : Tingkat serangan, Penggerek buah, Conopomorpha cramerella

Hypothenemus hampei is one of the main causes of the decrease in production and quality of coffee. The fenomena of this damage can be indicted by dwarfing fruit color changing to a reddish yellow, and finally the fall resulted in a decrease in the quantity and quality of production. This production loss was affected by the attack level of coffe pest. Symptoms of coffe pest attack (PBKo) can be identicated by its attacting form where PBKo can destroy both the unripe and ripe coffe. This research aims to know the relationship attacks Percentage the production loss due to the pest attack. Hypothenemus hampei Ferr. (Coleoptera: Scolytidae) in Betara subdistrict of Tanjung Jabung Barat regency. This research has been conducted in July–August 2016. This research using survey method with linear regression analysis i.e. regression between the percentage of attacks and the percentage of production loss. The attack percentage of PBKo pests in the Parit Panglong Betara village range between 8.20 – 17.76%. The percentage highest production loss results on red skin color coffee 7.11% and low on coffee colored skin green beans 3.95%. The percentage of PBKo pest attack had not showed a very strong relationship with the level of production loss. Keywords: Hypothenemus hampei, coffee AbstrakHypothenemus hampei merupakan salah satu penyebab utama penurunan produksi dan mutu kopi. Kerusakan yang ditimbulkannya berupa buah menjadi tidak berkembang, berubah warna menjadi kuning kemerahan dan akhirnya gugur mengakibatkan penurunan jumlah dan mutu hasil. Kehilangan hasil dipengaruhi oleh tingkat serangan hama penggerek buah kopi. Gejala serangan hama penggerek buah kopi (PBKo) dapat diketahui dari bentuk  serangan dimana PBKo dapat menggerek buah kopi yang masih muda sampai dengan yang masak. Penelitian ini bertujuan untuk mengetahui hubungan Persentase serangan dengan dugaan kehilangan hasil akibat serangan hama penggerek buah kopi Hypothenemus hampei Ferr.(Coleoptera:Scolytidae) di Kecamatan Betara Kabupaten Tanjung Jabung Barat. Penelitian dilaksanakan pada bulan Juli–Agustus 2016. Penelitian ini menggunakan metode survei dengan analisis regresi linier yaitu regresi antara persentase serangan dengan persentase kehilangan hasil. Persentase serangan hama PBKo di Desa Parit Panglong Betara berkisar antara 8,20 – 17,76 %. Persentase kehilangan hasil yang tertinggi didapatkan pada kopi yang warna kulit merah 7,11 % dan terendah pada kopi  yang berwarna kulit biji hijau 3,95 %.  Persentase serangan hama PBKo tidak memperlihatkan hubungan yang kuat dengan tingkat kehilangan hasil Kata kunci : Hypothenemus hampei, kopi

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.

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.