Ilmu Pertanian (Agricultural Science)
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Effect of humic acid on the growth and yield of two maize (Zea mays L.) cultivars on andisol
Get PDFOne way to improve maize (Zea mays L.) production is through land extension using Andisol land. However, Andisol soil has phosphate (P) fixation problem due to the high amorphous material. Hence, the use of organic material in the form of humic acid that has greater affinity to amorphous minerals is recommended to solve the problem. This research was conducted in February-May 2017 at Tri Dharma field of Faculty of Agriculture, Universitas Gadjah Mada. The Andisol land used has a low available P category from Datar, West Java and Wonosobo, Central Java. This research was arranged in a Randomized Complete Block Design (RCBD), consisting of two factors. The first factor was maize cultivar (Bisi-2 and Pioneer-35). The second factor was the doses of humic acid, consisting of control treatment (without fertilizer and humic acid), NPK without humic acid, and NPK + humic acid at 5%, 10%, and 15%. The percentage of humic acid given, based on the amount of NPK 16:16:16 fertilizer, was 350 kg.ha-1. Fertilization was applied three times 100 kg.ha-1 on 1 WAP, 150 kg.ha-1 at 3 WAP and 100 kg ha-1 at 7 WAP. The results is, humic acid treatment had the same effect with NPK fertilization treatment only and control on P available Andisol soil. Humic acid, also has the same effect with NPK fertilizer treatment in increasing the yield component of 100 seeds weight, dry weight of seeds, harvest index, length of cobs and productivity
Effect of salted fish waste and cow manure on NPK availability and uptake of lowland rice on peat soil in Pelalawan Riau
Get PDFThe low yield of rice in thick peat can be overcome by provisioning complete nutrients. Various efforts have been made to increase the productivity of Indonesian peatlands, one of which is by adding salted fish waste and cow manure. This research was carried out on a plastic house scale from October 2017 to January 15, 2018, in Pelalawan District, Pelalawan Regency, Riau. This research was arranged in a Completely Randomized Design (CRD), consisting of eight treatments, namely L0 = Control, L1 = 1.5 ton.ha-1 of fish waste, L2 = 2.25 ton.ha-1 of fish waste, L3 = 7 tons/ha of cow manure, L4 = 15 ton.ha-1 of cow manure, L5 = 1.5 ton.ha-1 of fish waste + 7 ton.ha-1 of cow manure, L6 = 1.5 ton.ha-1 of fish waste + 15 ton.ha-1 of cow manure, L7 = 2. 25 ton.ha-1 of fish waste + 7 ton.ha-1 of cow manure, and L8 = 2.25 ton.ha-1 of fish waste + 15 ton.ha-1 of cow manure. The results showed that the application of cow manure and salted fish waste could increase soil pH, total NPK, and NPK uptake. The application of 2.25 tons/ha of fish waste and 15 tons/ha of cow manure resulted the best results in soil pH, total NPK, and NPK uptake, therefore it is recommended for the cultivation of lowland rice on peat soil
Penggunaan Biji Aren (Arenga pinnata (Wurmb.) Merr.) dari Berbagai Warna Buah
Get PDFoai:jurnal.ugm.ac.id:article/1543Hingga kini diyakini bahwa benih aren berasal dari buah kuning telah mencapai kemasakan fisiologis. Ada kemungkinan bahwa kemasakan fisiologis benih aren tercapai sebelum buah berubah menjadi kuning. Penelitian ini bertujuan untuk mengkaji keeratan hubungan antara warna buah dengan daya kecambah dan vigor biji aren dan untuk menentukan biji aren memiliki daya kecambah dan vigor tinggi.Penelitian disusun menggunakan Rancangan Acak Kelompok Lengkap, terdiri dari 5 variasi warna buah yaitu hijau, hijau cerah, hijau kekuningan, kuning kehijauan dan kuning, masing-masing diulang 5 kali. Hasil penelitian ini menunjukkan bahwa warna buah berhubungan erat dengan perkecambahan dan vigor; daya kecambah tertinggi terjadi ketika buah berwarna hijau kekuningan hingga kuning
Kombinasi Pupuk Organik-NPK dalam Rotasi Tanaman Berbasis Padi untuk Peningkatan Sifat Kimia Tanah dan Hasil Padi
Get PDFTujuan penelitian adalah memperbaiki sifat kimia tanah dan meningkatkan hasil padi dalam rotasi ranaman berbasis padi. Percobaan lapangan dilaksanakan di Kabupaten Sragen bulan Juli 2005 sampai Juli 2006. Percobaan musim tanam I menggunakan perlakuan faktor tunggal, yakni macam residu tanaman yang disusun dalam RCBD terdiri atas 3 perlakuan, yaitu residu padi, kacang tanah dan kedelai. Percobaan tahap II dan III menggunakan rancangan petak terbagi yang disusun dalam RCBD, diulang 3 kali. Petak utama adalah residu tanaman, berasal dari pengembalian sisa hasil tanaman percobaan musim tanam I. Anak petak adalah pupuk organik merupakan percobaan musim tanam II dan III, terdiri atas 7 aras yaitu pupuk organik + NPK dosis rekomendasi, pupuk organik + NPK dosis optimum, pupuk organik + NPK dosis petani, NPK dosis rekomendasi, NPK dosis optimum, NPK dosis petani dan tanpa pupuk.Hasil penelitian menunjukkan bahwa kadar bahan organik, N-total dan K-tertukar pada ketiga macam rotasi tanaman tidak berbeda nyata. Kadar P-tersedia pada rotasi tanaman padi-padi-padi baik dengan maupun tanpa pupuk organik nyata lebih tinggi dibandingkan dengan legum-padi-padi. Produktivitas padi pada rotasi tanaman legum-padi-padi nyata lebih tinggi dibandingkan dengan rotasi tanaman padi-padi-padi. Pupuk organik mampu mensubtitusi pupuk NPK sebesar 30%
Branch prunning and chicken manure application to improve growth and yield of brocolli in lowland area
Get PDFThe objective of this study was to determine the effect of branch pruning and chicken manure application on improving the growth and yield of broccoli in the lowland. The research was conducted in the dry land of Kutasari Village, Baturraden District, Banyumas Regency at 138 m above sea level. The research was arranged in a Factorial Randomized Complete Block Design (RCBD) with three replications consisting of two factors of chicken manure application (without chicken manure and with chicken manure at doses of 10 ton.ha-1 and 20 ton.ha-1) and branch pruning (without and with branch pruning of 25% and 50%). The pruning was performed when the plants initiated flowers. The observed data were analyzed with the F test and followed with Duncan's Multiple Range Test (DMRT) at a P>0.05. The branch pruning resulted in a significant effect on the number of leaves, leaf width, head weight, and head diameter. Meanwhile, the chicken manure application showed a significant effect on all of the observed variables. There was an interaction effect of branch pruning and chicken manure application on the leaf width, head weight, and head diameter. The best result was obtained by the combined treatment of 50% branch pruning and 20 ton.ha-1 chicken manure, resulting in the head weight of 1048.33 g.plant-1 and leaf width of 1705.41 cm2
