Judul: Analisis Perbandingan Aspek Finansial antara Aplikasi Pupuk Kimia dan Pupuk Organik
Abstrak: Management must consider will invesment which be executed that will give advantage, good in the form of increase of effort for seeking of the alternative, then is followed with election of alternative that is very profits from so much the alternative. From background to hence there is its the problem formula is expenditure and earnings from farming can close over paddy farmer operating cost inbrida. Type and Data source applied is secondary data, in the form of first treatment report of usage of chemical fertilizer 100% and organic fertilizer 50% during five years that is the year 2008-2012 and second treatment of chemistry fertiliser use 50% and organic fertilizer 60% during five the year 2008-2012 and treatment of chemical fertilizer 100% and organic fertilizer 0% during five the year 2008-2012. Data collecting applies documentation data. Its the data analysis using quantitative analysis to cover method analysis Payback Period (PP), analysis NPV (Net Present Value), analysis IRR (Internal of Rate of Return), and analysis Net B/C. Based on calculation result which has been done by four appraisal of investment criterions consisted of : NPV, IRR, Net B/C, PBP appraisal of investment of inferential business that comparison of chemical fertilizer 100% and organic fertilizer 50% at rice Inbrida the year 2008-2012 at Skenario (P1, Q1 and S1) has positive NPV value Rp. 79,537,- ; IRR 40 %, and net B/C 5,6 PBP under from acceleration analysis age a period of crop that is 1,8 years. appraisal of investment of inferential business that comparison of chemical fertilizer 100% and organic fertilizer 50% the year 2008 - 2012 at competent inbrida paddy crop to be implemented for period plants second with chemistry fertiliser use 50% and organic fertilizer 60% at inbrida the year 2008-2012 for Skenario (P2, Q2 and S2) has positive NPV value Rp. 118,809,- ; IRR 40 % and Net B/C 5,7 for Pay Back Period under from analysis age with acceleration a period of crop that is 1,5 years, and period plants is third for chemical fertilizer 100% and organic fertilizer 0%. Elementary Scenario has positive NPV value Rp. 86,248,- ; IRR 41% and net B/C 5,6 pay back period 1,7 years. There by influential reality with improvement of paddy productivity inbrida if chemistry fertiliser use degraded and quickens post crop so that chemical fertiliser use and this competent organic fertilizer to be continued.
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Judul: Respon Morphophysiology and Consumptif Water Requirement of Paddy at Anorganik and Organik Fertilizer
Abstrak: Prioritas pembangunan pertanian untuk memenuhi kebutuhan pangan nasional semakin meningkat seiring peningkatan jumlah penduduk. Peningkatan produksi padi salah satunya dengan penggunaan pupuk anorganik, namun penggunaan yang terus menerus memicu terjadinya degradasi lahan dan air. Pupuk organik merupakan salah satu solusi untuk memperbaiki kondisi tersebut. Penelitian bertujuan untuk menganalisis perbedaan morfofisiologi dan efisiensi pemakaian air padi Inpari 33 pada pemupukan anorganik dan organik. Penelitian dilaksanakan pada bulan Juli - Desember 2020 di IP2TP Sukamandi Balai Besar Penelitian Tanaman Padi Subang Jawa Barat. Rancangan percobaan yang menggunakan Split Plot design dangan tiga ulangan. Petak utama adalah pupuk anorganik yang terdiri dari perlakuan tanpa NPK (kontrol), tanpa N (PK), tanpa K (NP), tanpa P (NK) dan NPK. Anak petak yaitu pupuk organik terdiri dari pupuk kandang sapi (pukan), kompos jerami dan tanpa organik. Hasil percobaan menunjukkan perlakuan pupuk anorganik tanpa P, tanpa K dan NPK meningkatkan pertumbuhan jumlah anakan sebesar 44-49%, nilai SPAD 6,9-10,98%, produksi 23- 51% dibandingkan perlakuan tanpa pupuk NPK dan tanpa N. Perlakuan pupuk anorganik tidak mempengaruhi laju fotosintesis namun mempengaruhi konduktansi stomata dan serapan hara. Efisiensi pemakaian air tertinggi yaitu 1,17 g gabah L-1 pada perlakuan tanpa P. Aplikasi pupuk organik belum mampu meningkatkan pertumbuhan, hasil, fotosintesis dan efisiensi penggunaan air. Konduktansi stomata dapat ditingkatkan dengan aplikasi pukan. Kebutuhan air konsumtif rata-rata tanaman padi selama penelitian adalah 469,48 mm dengan koefisien evapotranspirasi rata-rata sebesar 1,18. Interaksi pupuk anorganik dan organik mempengaruhi jumlah anakan, jumlah malai per rumpun, berat 1000 butir, serapan hara dan total evapotranspirasi. Penambahan pupuk kandang sapi sangat mempengaruhi jumlah anakan dan total evapotranspirasi pada perlakuan tanpa pupuk P. Penambahan bahan organik baik pupuk kandang maupun kompos jerami dapat mengurangi laju evaporasi dari dalam tanah. Kondisi tanaman yang tidak di pupuk P maka penambahan bahan organik dapat meningkatkan serapan hara P pada tanaman untuk tanah dengan karakteristik kandungan P potensial sedang sampai tinggi. Perlakuan kompos jerami mempunyai nilai efisiensi agronomis nitrogen mencapai 13,66., The priority of agricultural development is to supply national food in line with the increasing population. One of the ways to enhance rice production is to apply inorganic fertilizers, but the application of inorganic fertilizer in the long term causes soil and water degradation. The organic fertilizer would restore the soil condition. This research aims to determine differences in morphology rice Inpari 33 and water use efficiency in treatments inorganic and organic fertilization. The research was conducted from July to December 2020 in IP2TP Sukamandi, Indonesian Center for Rice Research, Subang-West Java. The treatments were Split Plot Design with three replications. The main plot was inorganic fertilizers, namely no application fertilizer of NPK, N, K, P, and NPK fertilizer. Sub-plots were organic fertilizers consisting of manure, straw compost, and non-organic fertilizers. The research result showed that inorganic fertilizers increased the number of tillers by 44-49%, SPAD value 6,9-10,98%, rice production 23-51%, water use efficiency 1.17% on minus P treatment. The treatment of inorganic fertilizers did not affect the rate of photosynthesis but did affect stomatal conductance and nutrient uptake. The highest efficiency of air use was 1.17 g of L-1 grain in the treatment without P.
Keyword: compost, evapotranspiration, photosynthesis, manure, stomata conductance

Judul: Embriogenesis ikan buta (Astyanax fasciatus)
Abstrak: Ikan buta Astyanax fasciatus adalah spesies ikan unik dari famili Characidae yang menempati perairan dalam gua di Wilayah La Cueva Chica-San Luis Potasi-Mexico. Ikan ini memiliki mata yang tereduksi (Blind Cavefish) dan warna kulit merah muda, pucat serta mengkilap.
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