Jajar Legowo (Jarwo) Super is an improved technological innovation used to increase the productivity of lowland rice varieties. Related to the introduction of the technology, it is necessary to conduct in-depth research on some components of Jarwo Super including new Superior varieties, application of Agrimeth biofertilizer and planting system on growth and yield. The research was aimed to investigate the response of the new Superior variety to biofertilizers and different planting system. The study was conducted in Koya Barat, District Muara Tami, Jayapura, from June to September 2018. The treatments were arranged in a split-split plot design with three replications. The main plot was biofertilizers consist of Agrimeth and without Agrimeth. As subplot was planting methods Jarwo, consist of Jarwo 2:1 (25 cm x 12.5 cm x 50 cm) and Jarwo 4:1 (25 cm x 12.5 cm x 50 cm). As sub-sub plots were new superior variety (NSV): Inpari 33 and Inpari 43, respectively. The results showed that the combination of treatment of Agrimeth and without Agrimeth with planting system Jarwo 4:1 on Inpari 33 gave the higher grain yield compared to other treatments of 7.44 t/ha and 7.33 t/ha. The application of Agrimeth biofertilizers does not have a significant influence in increasing the yield of rice grain. Jarwo system 4:1 gives a dry grain yield of 6.30 t/ha which is higher 0.53 t/ha compared to Jarwo 2:1 (5.77 t/ha).

Adaptation of new high yielding highland rice varieties in Jayawijaya Regency, Papua Province. The research was carried out from June to September 2017 in Jayawijaya, Papua. The aims were to determine the appearance and productivity results of new high yielding rice varieties at an altitude of 1600 m above sea level. The study used a Randomized Block Design and each treatment was repeated 4 times. There were 4 (four) new superior varieties tested and one local variety as a comparison. Inpari 26, Inpari 27, Inpari 28 and Sarinah have been used for the treatment while the comparison variety was existing varieties (local Toraja). Component of growth and a component of production were collected as the parameter. The results showed that the superior variety of Inpari 28 provided the highest adaptability and yield which obtained 4.94 t / ha (MPD) and the age of the pan was also faster than other varieties. It showed the deepest age was obtained by local varieties 190 days after spread.

The study aims to evaluate the agronomical performance of new superior varieties of rice in irrigated fields cultivated through the Integrated Crop Management approach and the feasibility of the farming system. The research was carried out in Koya Barat, a region in District Muara Tami, Jayapura City, Papua Province in April-October 2019. The research used a single factor randomised block design with four new superior rice varieties as treatment afived 5 replications. The varieties were Inpari 36, Inpari 37, Inpari 43, and Ciherang. The data were analysed using analysis of variance (ANOVA) and followed by DMRT to determine the differences between treatments. The R/C ratio, marginal B/C analysis and the break-even point (BEP) were analysed to determine the economic feasibility. The results showed that the performance of each variety varied following their genetic traits. The highest rice production was obtained from Inpari 37 variety (6.86 t/ha), while Ciherang produced the lowest yield (4.34 t/ha). Inpari 37 and Inpari 43 provided higher profit compared to Ciherang and Inpari 36 with R/C values of 3.43 and 3.42, respectively. The highest market acceptance of Inpari 37 was valued at IDR 29,498,000 followed by Inpari 43 at Rp 29,412,000, then Ciherang at IDR 18,662,000 and lastly, the Inpari 36 at IDR 25,542,000. Economically, rice farming is feasible to be developed because it has an R/C ratio of> 1. The irrigated rice farming in Jayapura City is profitable with a rate of around 2.42 % of the total cost spent.

This study aimed to obtain high efficiency in the use of solar radiation energy by combining varieties and stake angle (against horizontal) in sweet potato cultivation in the Papua highlands. The experiment was conducted on entisol soil type at 1560 m above sea level from April to September 2016. The environment experiment was arranged in a factorial Randomized Block Design with three replications. Factor A (variety) consisted of three varieties, i.e. Siate (local), Papua Sollosa, and Cangkuang; factor B (stake angle) consisted of four angles i.e. without stakes, 45°, 60°, and 90°. Specific Leaf Area decreased following an increase in stake angle levels for all varieties. The experiment reveals that Cangkuang with a 90° stake angle was higher on tuber dry weight (248.7 g per plant). The highest tuber yields were achieved by Cangkuang variety at 90° and 60° stakes angle with production 31.53 ton per ha and 28.86 ton per ha, respectively. Under conditions of abiotic stress due to the high level of cloud shade in the Papua highlands, it is recommended to use Cangkuang sweet potato variety or varieties with wide leaves, combined with the use of stakes at 90° and 60° angles. Keywords: Stake, solar radiation energy, sweet potato variety, Papua highland   ABSTRAK Penelitian ini bertujuan untuk mendapatkan efisiensi penggunaan energi radiasi matahari yang tinggi dengan mengkombinasikan varietas dan kemiringan (sudut terhadap horizontal) ajir pada budidaya tanaman ubi jalar di dataran tinggi Papua. Penelitian berlangsung pada tanah entisol, ketinggian 1560 m di atas permukaan laut dari bulan April - September 2016. Rancangan lingkungan adalah faktorial yang disusun dalam Rancangan Acak Kelompok dengan tiga ulangan. Faktor A (varietas) terdiri dari tiga varietas, yakni Siate (lokal), Papua Sollosa dan Cangkuang; faktor B (sudut kemiringan ajir) terdiri dari empat sudut yakni tanpa ajir, kemiringan ajir 45°, 60° dan 90°. Hasil penelitian menunjukkan bahwa luas daun spesifik (LDS) menurun mengikuti peningkatan kemiringan ajir pada semua varietas, dengan bobot kering umbi tertinggi 248,7 g per tanaman dihasilkan oleh varietas Cangkuang pada kemiringan ajir 90°. Hasil umbi tertinggi secara berturut-turut diperoleh oleh varietas Cangkuang pada kemiringan ajir 90° dan 60° masing-masing 31,53 ton per ha dan 28,86 ton per ha. Pada kondisi cekaman abiotik akibat tingkat keawanan tinggi di dataran tinggi Papua, dianjurkan untuk menanam varietas ubi jalar Cangkuang atau varietas dengan karakter berdaun lebar dikombinasikan dengan penggunaan ajir dengan kemiringan 90° dan 60°. Kata kunci: Ajir, energi radiasi matahari, varietas ubi jalar, dataran tinggi Papua

One effort to increase corn production is through the use of new superior varieties (NSV) hybrid corn and composite corn. This study aims to determine the performance of growth and yields of four NSV hybrid corn and composite corn. The study was conducted in Merauke Regency, Papua since August to December 2018. The design used was Randomized Group Design (RGD) based on one factorial with 5 sub factors, each hybrid corn; HJ 21 Nasa variety, Nasa 29 variety and composite corn; Lamuru variety, Bisma variety, Sukmaraga variety. The results of the study at various ages of plant height were not affected significantly, the number of leaves were significantly affected by 30 days after planting (DAP) and at harvest time. Leaves width at various ages had no significant effect, while leaves length and stem diameter were all observed at the highest leaf length with the effect of 30 days after planting (DAP) Nasa 29 (75 cm) but 60 days after planting (DAP) and at harvest HJ 21 Agritan 93 cm. Then the largest stem diameter of Nasa 29 (1.7 cm) was 30 days after planting (DAP) and 60 days after planting (DAP)- at harvest was each 2.5 cm. Difference of the longest cob length of HJ 21 agritan 38.4 cm, diameter of the largest cob 5.1 cm, the highest number of lines per cob 15.8 seeds, the heaviest weight of 1000 HJ 21 Agritan 420.6 g, heaviest dry harvest Nasa 29 (12.4 t/ha) and the heaviest dry pipelines Nasa 29 (9.2 t/ha). The overall performance of the results significantly affected both hybrid corn and composite corn.