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Waste resulted from the distillation of kayu putih leaves is a problem in almost all kayu putih refineries throughout Indonesia due to its enormous availability and un-utilization. It has potential to be used as an organic fertilizer source due to its nutrient content (macro and micro) which is higher than organic fertilizer from animals. The use of kayu putih waste is useful to complement and increase the efficiency of nitrogen fertilizer in soybean intercropping with kayu putih. This study aimed to determine the optimum values of kayu putih waste and nitrogen fertilizer based on three scenarios: economic, environmental, and eco-environmental. A two-year experiment (2018-2019) was carried out in a central composite design (CCD) with two replications as the response surface methodology (RSM) at the Menggoran Forest Resort, Playen District, Yogyakarta Forest Management, Indonesia. The treatments consist of biochar and compost levels made from kayu putih waste (0, 2.5, and 5.0 t ha-1) and nitrogen fertilizer levels supplied by ammonium sulfate (0, 50, and 100 kg ha-1) as independent variables. The observations conducted on nitrate reductase activity (NRA), total chlorophyll (TC), leaf photosynthesis rate (LPR), nitrogen loss (NL), nitrogen use efficiency (NUE), and seed yield (SY). The response variables were fitted in a full quadratic polynomial model. The results showed that the resource-based on the eco-environmental scenarios was the most favorable cropping strategy for the soybean production intercropping with kayu putih with the optimum value of 2.890 t ha-1 of biochar, 2.27 t ha-1 of compost, and 67.85 kg ha-1 of ammonium sulfate. This recommendation can reduce the use of ammonium sulfate by 32.

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Salah satu program yang dikeluarkan Kementerian Kehutanan terkait pemberdayaan masyarakat adalah program Hutan Kemasyarakatan (HKm), yang salah satunya berlokasi di Kabupaten Kulon Progo. Penelitian ini bertujuan untuk mengetahui karakteristik sosial ekonomi petani HKm Kulon Progo dan kontribusi HKm terhadap pendapatan petani. Penelitian dilakukan mulai November 2013 sampai dengan Februari 2014. Data dikumpulkan melalui survei dan wawancara kepada anggota kelompok tani dan dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan petani HKm rata-rata berusia 53 tahun, pendidikan petani rendah karena 53% lulusan SD. Rata-rata jumlah tanggungan keluarga 4 orang. Rata-rata luas lahan andil 2.128 m2 dan rata-rata luas lahan milik 2.947 m2 sehingga termasuk petani gurem. Tujuh puluh persen petani HKm hutan produksi dan 47,3% petani HKm hutan lindung masuk ke dalam kategori miskin sekali dan miskin. Kontribusi HKm pada pendapatan petani adalah 6,4% pada hutan produksi dan 4,8% pada hutan lindung. Kecilnya kontribusi dari HKm berimplikasi pada upaya peningkatan pendapatan petani melalui pengembangan potensi tanaman empon-empon dan umbi-umbian serta potensi wisata. Characteristic of Farmer and Contribution of Community Forestry to Farmer’s Income in Kulon ProgoAbstractOne of the project that is held by Ministry of Forestry is Community Forestry (CF), which one is located in Kulon Progo. This research aim was to obtain the social-economic characteristic of CF farmers in Kulon Progo and to know the contribution of CF to their total earning. The data collection had been held from November 2013 until February 2014 and was collected by survey and interview to some members of CF groups. The data was analyzed by descriptive qualitative method. The results showed that the average of  farmer’s age was 53; farmer’s education was in a low level as 53% were graduated from elementary school. The average of family member were 4 persons. The average of CF land was 2.128 m2 and the average of farmers’s own land was 2.947 m2. That was meant that the farmer was near to be categorized as poor farmer. Seventy percent of farmers from production forest and 47.3% farmers from protected forest were categorized as very poor and poor. CF contribution towards farmer’s income was 6.4% in production forest and 4.8% in protected forest. The low contribution of CF implicated to improve farmer’s income through developing non-timber forest product asherbs and edible root and also potential for eco-tourism.

Penelitian ini bertujuan untuk mengetahui nilai kompetisi dan keuntungan hasil dalam tumpangsari jagung varietas pioner 21 dan kedelai varietas grobogan dibawah tegakan hutan kayu putih. Penelitian ini menggunakan metode percobaan lapangan yang terdiri atas dua faktor dan dirancang dengan menggunakan Rancangan Petak ber-alur. Faktor pertama sebagai petak utama berupa Posisi bidang olah dari kedudukan tegakan kayu putih (Zona) dan faktor kedua sebagai anak petak adalah jarak tanam jagung. Petak utama berupa zona bidang olah terdiri dari 2 aras yaitu zona 1 terletak pada posisi bidang olah yang berjarak 0-1 m dari kedudukan tegakan (Z1); zona 2 terletak pada posisi bidang olah yang berjarak 1-2 m dari kedudukan tegakan (Z2), Anak petak adalah jarak tanam jagung yang terdiri atas 3 aras yaitu: 50 cm x 20 cm (J1), 70 cm x 20 cm (J2) dan 90 cm x 20 cm (J3). Hasil penelitian menunjukkan bahwa Tumpangsari tanaman jagung dan kedelai dibawah tegakan kayu putih sangat menguntungkan.Tanaman jagung lebih agresif dan competitif daripada tanaman kedelai sehingga menyumbangkan keuntungan pada land equivalent ratio total dan area time equivalent ratio dan Actual Yeild loss total pada perlakuan zona pengolahan lahan maupun jarak tanaman. Zona pengolahan lahan 0-1 m dari kedudukan pohon kayu putih memberikan hasil land equivalent ratio total, area time equivalent ratio, dan actual yield loss total paling tinggi yaitu sebesar 1,71, 1,66 dan 0,82 sedangkan Jarak tanam 50 cm x 20 cm memberikan hasil land equivalent ratio total, area time equivalent ratio, dan actual yield loss total paling tinggi yaitu sebesar 2,27, 2,25 dan 1,58. ©2017 dipublikasikan oleh Savana Cendana.

Abstract. Suryanto P, Taryono, Supriyanta, Kastono D, Putra ETS, Widyawan MH, Alam T. 2020. Assessment of soil quality parameters and yield of rice cultivars in Melaleuca cajuputi agroforestry system. Biodiversitas 21: 3463-3470.  Interactions between rice cultivars and soil quality parameters rises problems in the attempt of increasing rice yield. The objective of this study was to assess soil quality parameters that affect the yield of 15 rice cultivars in an agroforestry system of ‘kayu putih’ (Melaleuca cajuputi) situated in Menggoran forest, Yogyakarta, Indonesia which have three soil types namely Lithic Haplusterts, Ustic Epiaquerts, and Vertic Haplustalfs. The observation was conducted on 21 soil quality parameters and yield of rice cultivars. The data were analyzed by using ANOVA, factor analysis, and stepwise regression. The highest yield of rice per hectare was attained by GM 28 in Ustic Epiaquerts with 6.493 tons ha-1, while Situ Patenggang and GM 28 in Vertic Haplustalfs as high as5.549 and 5.401 tons ha-1, respectively, and Situ Patenggang in Lithic Haplusterts as high as 4.893 tons ha-1. Soil quality parameters that had significant effect on the yield of rice cultivars were Clay, SMC, pH, SOC, N, Mg, Fe, Fg, and Bae. We suggested that rice cultivars recommendations for Lithic Haplusterts, Ustic Epiaquerts, and Vertic Haplustalfs are Situ Patenggang, Situ Patenggang or GM 28, and GM 28, respectively, in addition to fertilization based on limiting factors of each rice cultivars.

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Ungirwalu A, Awang SA, Suryanto P, Maryudi A. 2017. The ethno-techno-conservation approach in the utilization of Black Fruit (Haplolobus sp.) by the Wandamen people of Papua, Indonesia. Biodiversitas 18: 1336-1343. Identities and cultures are developed by societies through interaction with their environments. In caring for and using their environment, ecological knowledge is created. Deep knowledge of sustainable utilization and conservation of forest resources exist in Papua, but this traditional wisdom is poorly reflected in scientific literature. Such knowledge includes for example the adaptive traditional management of Black Fruit trees (Haplolobus sp.) by the Wandamen people of Papua, which is the subject of the case study reported in this paper. Our research focused on developing an understanding of how local knowledge about utilization, conservation, and protection of Black Fruit was constructed over time. It employed ethnoecology as the analytical lens. The study was conducted in Teluk Wondama District, West Papua. We found that the adaptive resource management of Black Fruit by the Wandamen is based on an approach which we have called “ethnotechno- conservation”. This approach is an attitude of mind by which Wandamen communities manage their Black Fruit trees to meet the dual goals of fulfilling subsistence needs and conserving the resource. This adaptive strategy has evolved over time as a response to the dynamics of the environment and exemplifies the co-evolution of culture and environment that is a defining feature of the world we all inhabit. The traditional concepts and knowledge of the Wandaman elaborate conservation values in the utilization of the Black Fruit. These adaptive concepts and knowledge are codified in their beliefs, myths, and handed-down wisdom.