Penelitian ini bertujuan untuk mengetahui pengaruh pemberian berbagai macam dosis Pupuk Kalium Hasil Inovasi (PKHI) terhadap peningkatan pertumbuhan dan hasil tanaman jagung manis pada jenis tanah inceptisol. Penelitian ini menggunakan rancangan acak kelompok pola sederhana dengan faktorial tunggal. Faktor perlakuan tunggal yang diujikan pada penelitian ini yaitu variasi dosis Pupuk Kalium Hasil Inovasi (PKHI) yang terdiri dari variasi dosis dan kontrol, yakniA(N,P Tunggal), B(N,P,K Tunggal), C(1/4 K + N,P Tunggal), D(1/2 K+ N,P Tunggal), E(3/4 K+ N,P Tunggal), F(1 K+ N,P Tunggal), G(1 1/4 K+ N,P Tunggal), H(1 1/2 K+ N,P Tunggal), I(1 3/4 K+ N,P Tunggal), dan J (Kontrol). Masing-masing perlakuan diulang tiga kali, sehingga jumlah seluruhnya didapat 30 plot percobaan. Hasil penelitian menunjukan bahwa pemberian Pupuk Kalium Hasil Inovasi (PKHI) memberikan pengaruh nyata terhadap pertumbuhan dan hasil meliputi tinggi tanaman, jumlah daun, bobot tongkol, diameter tongkol, dan panjang tongkol. Dosis Pupuk Kalium Hasil Inovasi (PKHI) paling memberikan pengaruh nyata terhadap pertumbuhan atau hasil yaitu pada dosis 1 1/2 K dengan 240 Kg/Ha Pupuk Kalium yang diuji dan menghasilkan 18 Ton tongkol per hektar.Kata kunci : Inovasi Pupuk Kalium, Jagung Manis, Hasil Pertanian

The Relationship between N, P, and K Uptake of Chili Plants to Their Residues in Soil Treated by Liquid Organic Fertilizers and NPKThis study aims to determine the relationship of N, P, and K uptake of chili plants towards the residues in the soil treated with liquid organic fertilizer with the addition of inorganic fertilizers of N, P and K. The research was conducted from September 2017 to January 2018 in the experimental field and KTNT Laboratory, Faculty of Agriculture, Universitas Padjadjaran. The design used was simple complete randomized design with 10 treatments and were repeated 3 times, with the treatment arrangement as follows: A = Control 0 PS + 0 NPK, B = 0 PCO + 1 NPK, C = 1 PCO + 0 NPK, D = 1 PCO + ¼ NPK, E = 1 PCO + ½ NPK, F = 1 PCO + ¾ NPK, G = 1 PCO + 1 NPK, H = ¼ PCO + ¾ NPK, I = ½ PCO + ¾ NPK and J = ¾ PCO + ¾ NPK. The results showed that the highest nutrient uptake and residue was found in the treatment of 1 PCO + ¾ NPK. Relationship between N, P and K uptake with nutrient residue on the soil was detected. The N, P and K residues were influenced by the N, P and K uptake of chili plants of 92%, 98%, and 97%, respectively.Keywords: Chili, NPK, Liquid Organic Fertilizer, Residue, AbsorptionABSTRAKPenelitian ini bertujuan untuk mengetahui hubungan serapan N, P, dan K tanaman cabai terhadap residunya di dalam tanah yang diberi pupuk cair organik dengan pupuk anorganik N, P dan K. Penelitian dilaksanakan pada bulan September 2017 sampai dengan Januari 2018 di kebun percobaan dan Laboratorium KTNT Fakultas Pertanian, Universitas Padjadjaran. Rancangan yang digunakan adalah RAK sederhana dengan 10 perlakuan yang diulang 3 kali dengan susunan perlakuan sebagai berikut: A = Kontrol 0 PS + 0 NPK, B = 0 PCO + 1 NPK, C = 1 PCO + 0 NPK, D = 1 PCO + ¼ NPK, E = 1 PCO + ½ NPK, F = 1 PCO + ¾ NPK, G= 1 PCO + 1 NPK, H = ¼ PCO + ¾ NPK, I = ½ CO + ¾ PK dan J = ¾ PCO + ¾ NPK. Hasil penelitian menunjukkan bahwa serapan dan residu hara tertinggi ialah perlakuan F = 1 PCO + ¾ NPK. Terdapat hubungan antara serapan N, P dan K dengan residu hara pada tanah. Residu N, P dan K dipengaruhi oleh serapan N, P dan K tanaman cabai masing-masing sebesar 92% serapan N, 98% serapan P, dan 97% serapan K.Kata Kunci: Cabai, NPK, PCO, Residu, Serapan

The sustainability of agricultural production depends on the health of soils ecosystem and soil properties. Rhizomicrobiome act as external digestive organs of the plant plays a magnificent role for enhancing the nutrient availability, soil health and plant growth on marginal soils. The intensive use of agrochemical such as inorganic fertilizers has accelerated the soil health degradation and inefficiency of fertilizers use. Bioameliorant or bioagent containing activated carbon, organic extract, humic substances and beneficial rhizobacteria was developed and formulated as soil conditioner and microbial fertilizer for improving the soil properties and increasing the microbial population in rhizosphere microbiome (rhizomicrobiome) and as well as to increase the yield of soybean. The experiment was set up as randomized block design, consisted of 7 treatments (0, 4, 8, 12, 16 kg ha−1 of bioagent, 1 ton ha−1 dolomite and 1 ton ha−1 manure) and provided with 4 replications. The chemical properties (organic carbon, pH and CEC), beneficially bacterial population in rhizomicrobiome (Azospirillum sp., Pseudomonas sp. and Bacillus sp.) and soybean grain yield were significantly increased by the low dosage application of organic bioagent. Application of 8-12 kg ha−1 of bioagent had increased the grain yield of soybean significantly (about 47.5-51.1% higher than control). The obtained yield was not different significantly either with application 1 ton ha−1 dolomite or 1 ton ha−1 organic manure. Consequently, application of 8-12 kg ha−1 of bioagent can be recommended to substitute the use of conventional ameliorant and to enhance the bacterial biodiversity in rhizomicrobiome for increasing the soil health and soybean yield.