ABSTRAK Tanaman Buncis (Phaseolus vulgaris L.) merupakan salah satu tanaman kacang – kacangan dan tergolong sayuran yang cukup penting karena mempunyai nilai gzi yang cukup tinggi. Tujuan penelitian ini untuk mengetahui respon tanaman buncis terhadap dosis pupuk NPK phonska. Penelitian dilaksanakan menggunakan Rancangan Acak Kelompok (RAK) non faktorial dengan 5 ulangan. Perlakuan yang dicoba adalah dosis pupuk NPK Phonska yang terdiri dari 5 level dengan ukuran petak 2,4 m2 yaitu P0 : NPK Phonska 0 g/petak (450 kg/ha), P1 : NPK Phonska 95 g/petak (450 kg/ ha) , P2 : NPK Phonska 110 g/petak (450 kg/ ha), P3 : NPK Phonska 125 g/petak (450 kg/ha), P4 : NPK Phonska 140 g/petak (450 kg/ha). Parameter yang diamati meliputi jumlah daun pertanaman (helai), Jumlah cabang, Umur tanaman berbunga (HST), Jumlah polong per tanaman (buah), Panjang polong (cm), Bobot basah polong pertanaman (g), Bobot kering polong pertanaman (g), Bobot basah total/tanaman (g), Bobot kering total/tanaman (g). Hasil penelitian ini menunjukkan bahwa dosis pupuk NPK phonska berpengaruh nyata terhadap jumlah polong per panen, bobot basah dan bobot kering polong per tanaman, nilai tertinggi diperoleh pada pemberian pupuk NPK phonska 140 g/petak (450 kg/ha) dan tidak berpengaruh nyata terhadap jumlah daun, jumlah cabang, waktu mekarnya bunga, panjang polong dan bobot total/tanaman. Kata kunci : Buncis (Phaseolus vulgaris L.), pupuk NPK phonska.

ABSTRACT Bean plants ( Phaseolus vulgaris L. ) is one of the bean plants - beans and vegetables are classified as quite important because it has a high enough value gzi. The purpose of this study to evaluate the response of bean plants to Phonska NPK fertilizers. The experiment was conducted using a randomized block design (RBD ) non factorial with five replications. The treatments tested were dose of NPK fertilizer Phonska consisting of 5 levels with a plot size of 2.4 m2 namely P0 : NPK Phonska 0 g / plot (450 kg / ha), P1 : NPK Phonska 95 g / plot (450 kg / ha) P2 : NPK Phonska 110 g / plot (450 kg / ha), P3 : NPK Phonska 125 g / plot (450 kg / ha), P4 : NPK Phonska 140 g / plot (450 kg / ha). The parameters observed crop leaf number ( strands ), number of branches, Age flowering plants ( HST ), The number of pods per plant ( fruit ), pod length ( cm ), Weight wet planting pods ( g ), dry weight of pods crop ( g ), The weight of the total wet / plant ( g ), total dry weight / plant ( g ). The results of this study indicate that the dose of NPK fertilizer Phonska significantly affect the number of pods per harvest, fresh weight and dry weight of pods per plant, the highest value obtained in NPK fertilizer Phonska 140 g / plot ( 450 kg / ha ) and does not significantly affect the amount of leaves, number of branches, bloom time, pod length and total weight / plant . Keywords : bean ( Phaseolus vulgaris L. ), NPK fertilizer Phonska.

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