| Abstrak (Bhs. Indonesia) | Penelitian ini bertujuan untuk mengetahui pengaruh level P pada pupuk NPK-SR dan dosis jerami terhadap ketersediaan unsur hara N dan peningkatan produksi padi sawah. Penelitian ini dilaksanakan di Greenhouse dengan menggunakan Rancangan Acak Kelompok Lengkap (RAKL) terdiri dari dua faktor perlakuan dan tiga ulangan. Faktor pertama yaitu pupuk majemuk NPK-SR pada perbedaan grade P (5 aras) dengan K0 (tanpa pemberian pupuk NPK-SR), K1 (pemberian pupuk NPK-SR, grade A (15-0-7,5)), K2 (pemberian pupuk NPK-SR, grade B (15-5-7,5)), K3 (pemberian pupuk NPK-SR, grade C (15-10-7,5)), dan K4 (pemberian pupuk NPK-SR, grade D (15-15-7,5)). Faktor kedua yaitu jerami 2 (aras) dengan J0 (tanpa pemberian jerami) dan J1 (pemberian jerami setara 40 ton/ha). Pemberian pupuk NPK-SR yang dirakit berpengaruh sangat nyata terhadap semua variabel kecuali N-total setelah panen serta bobot batang dan daun kering setelah panen peningkatan yang terjadi sebesar 0,21% pada N-total akhir vegetatif; 9,72% pada serapan N; 6,25% pada tinggi tanaman; 22,06% pada jumlah daun tanaman; 5,31% pada jumlah anakan tanaman; 3,02% akhir vegetatif dan 0,7% setelah panen pada bobot akar segar; 4,8% akhir vegetatif dan 4,75% setelah panen pada bobot batang segar; 52,53% akhir vegetatif dan 4,59% setelah panen pada bobot daun segar; 11,68% akhir vegetatif dan 7,52% setelah panen pada bobot akar kering; 12,31% pada bobot batang kering akhir vegetatif; 16,02% pada bobot daun kering akhir vegetatif; 48,31% pada bobot gabah bernas; dan 6,61% pada bobot gabah hampa. Pemberian jerami berpengaruh nyata terhadap serapan N, tinggi tanaman, dan bobot batang segar setelah panen. Kombinasi aplikasi pupuk NPK-SR dengan jerami hanya berpengaruh nyata terhadap variabel bobot gabah hampa.
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| Abtrak (Bhs. Inggris) | This study aims to determine the effect of P level in NPK-SR fertilizer and straw dose on the availability of N nutrients and increased production of paddy rice. This research was conducted in the Greenhouse using a Completely Randomized Group Design (CRD) consisting of two treatment factors and three replications. The first factor was NPK-SR compound fertilizer in different P grades (5 levels) with K0 (no NPK-SR fertilizer), K1 (NPK-SR fertilizer, grade A (15-0-7.5)), K2 (NPK-SR fertilizer, grade B (15-5-7.5)), K3 (NPK-SR fertilizer, grade C (15-10-7.5)), and K4 (NPK-SR fertilizer, grade D (15-15-7.5)). The second factor was straw 2 (rate) with J0 (no straw application) and J1 (straw application equivalent to 40 tons/ha). Application of the assembled NPK-SR fertilizer had a very significant effect on all variables except N-total after harvest and dry stem and leaf weights after harvest. The increase was 0.21% in late vegetative N-total; 9.72% in N uptake; 6.25% in plant height; 22.06% in number of plant leaves; 5.31% in number of plant tillers; 3.02% late vegetative and 0.7% after harvest in fresh root weight; 4.8% late vegetative and 4.75% after harvest in fresh stem weight; 52.53% late vegetative and 4.59% after harvest in fresh leaf weight; 11.68% late vegetative and 7.52% after harvest in dry root weight; 12.31% in late vegetative dry stem weight; 16.02% in late vegetative dry leaf weight; 48.31% in full grain weight; and 6.61% in hollow grain weight. Straw application had a significant effect on N uptake, plant height, and fresh stem weight after harvest. The combination of NPK-SR fertilizer application with straw only significantly affected the variable of empty grain weight. |
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