ABSTRAKBawang merah merupakan salah satu komoditas penting di Indonesia. Tanaman ini dapat beradaptasi dengan berbagai kondisi lingkungan. Super Philip merupakan salah satu kultivar bawang merah nasional di Indonesia dengan potensi produktivitas sekitar 17,6 t/ha. Informasi tentang hubungan karakter dalam kultivar ini belum banyak dipelajari. Hubungan antara karakter penting dalam pengembangan kultivar sehingga dapat menerapkan teknologi baru untuk meningkatkan hasil secara langsung atau tidak langsung. Penelitian ini bertujuan untuk mengetahui variasi sifat pada bawang merah dan besarnya korelasi dan pengaruh tidak langsung langsung dari tinggi tanaman, jumlah anakan, jumlah daun, diameter, dan berat biomassa dengan bobot umbi akibat perbedaan lingkungan. Bahan yang digunakan adalah umbi bawang merah, kultivar Super Philip yang ditanam pada bulan September-November 2014. Keragaman diukur dengan kisaran minimum dan maksimum, keragaman dan koefisien keragaman. Korelasi pearson digunakan untuk mengukur hubungan antara karakter. Analisis jalur untuk bobot umbi dilakukan pada tinggi tanaman, jumlah anakan, jumlah daun, diameter. Hasil penelitian menunjukkan bahwa keragaman dan korelasi bobot umbi dan biomassa tanaman akibat lingkungan yang berbeda. Korelasi yang terjadi dikarenakan bobot umbi tanaman yang dipengaruhi langsung oleh biomassa, diameter umbi dan tinggi tanaman.
Current research was conducted with the objectives to identify the utmost traits that may be beneficial for the higher productivity of the grains on high protein content genotypes lines by path coefficient. Path coefficient can define coefficient correlation directly and indirectly to gain information about nature relationship between yield component and protein content to grain yield. Research material consisted of 61 selected plants from G39×Ciherang and 66 selected plants from Mentik Wangi×G39 at F4 generation. Plants were planted in Banyumas in May 2011. Number of panicles per plant, panicle length, 1000 g of grain weight, percentage of filled grain per panicle, protein content, and grain yield were correlated by using Pearson correlation and were followed by path coefficient. Number of panicles per plant, panicle length, 1000 g of grain weight, percentage filled grain per panicle, and protein content were used as dependent variable, while grain yield was used as independent variable. The result showed that protein content in both populations was not correlated with all yield components. The numbers of panicles, followed by panicle length, had highest positive direct effect to yield. The number of panicle was a positive mediator variable to yield from another variable.
ABSTRAKPengelolaan unsur hara Nitrogen (N) melalui pemupukan yang cukup dan berimbang berperan penting untuk meningkatkan produktivitas bawang merah. Penggunaan senyawa nitrat sebagai sumber N dapat menjadi alternatif dalam penambahan unsur N. Penelitian ini bertujuan untuk mengetahui respon pertumbuhan dan hasil bawang merah pada beberapa taraf dosis pupuk kalsium nitrat. Penelitian dilakukan di Kebun Percobaan Mojosari, Kabupaten Mojokerto mulai Maret-Mei 2019. Penelitian menggunakan Rancangan Acak Kelompok diulang 3 kali menggunakan 9 perlakuan yaitu kontrol, dosis rekomendasi (200 kg/ha Urea dan 500 kg/ha ZA), dosis kombinasi pemberian Urea, ZA, dan Kalsium Nitrat. Parameter yang diamati adalah tinggi tanaman, jumlah anakan, diameter umbi, bobot rumpun, bobot rumpun kering askip, susut bobot, dan produktivitas. Hasil penelitian menunjukkan bahwa perlakuan dosis 150 kg/ha Urea dan 375 kg/ha ZA ditambahkan dengan dosis 5 g/l kalsium nitrat yang mampu meningkatkan pertumbuhan dan hasil tanaman bawang merah dibandingkan dengan perlakuan lainnya.ABSTRACTNitrogen (N) nutrient management through adequate and balanced fertilization plays an important role in increasing the productivity of shallots. The use of nitrate compounds as a source of N can be an alternative in the addition of the N element. This study was aimed to determine the response of shallot growth and yield from several levels of calcium nitrate fertilizer. The research was conducted at the Mojosari Experimental Garden, Mojokerto Regency from March to May 2019. The study used a Randomized Block Design with 3 replicates. The study used 9 treatments namely control, recommended dosage (200 kg / ha Urea and 500 kg / ha ZA), the combined dose of Urea, ZA, and calcium nitrate. The parameters observed were plant height, number of tillers, tuber diameter, weight of the clump, dry weight of the askip clump, weight loss, and productivity. The results showed that the treatment with dosage of 150 kg / ha Urea and 375 kg / ha ZA which was added with a dose of 5 g / l calcium nitrate was able to increase the shallot growth and yield plants compared to other treatments.
ABSTRAKJagung merupakan salah satu tanaman penting di Indonesia dan memiliki peran strategis dalam perekonomian nasional. Penambahan unsur hara melalui pemupukan merupakan cara untuk meningkatkan hasil. Kalium merupakan senyawa kimia yang sudah dikenal masyarakat untuk pupuk tanaman. Unsur kalium mempengaruhi ketegaran tanaman, merangsang pertumbuhan akar, ketahanan terhadap hama dan penyakit, memperbaiki kualitas biji, dan mampu mengatasi kekurangan air pada tingkat tertentu. Pupuk Black Horses adalah salah satu pupuk anorganik yang mengandung Kalium (K2O) 60,03%. Tujuan penelitian ini adalah untuk mengetahui pengaruh Pupuk KCl Black Horses terhadap pertumbuhan dan produksi jagung. Metode penelitian yang digunakan adalah RAK dengan 9 perlakuan dan 3 ulangan. Hasil penelitian menunjukkan bahwa pemberian pupuk KCl Black Horses efektif secara teknis dan ekonomis meningkatkan produktivitas pada dosis 125 kg/ha (8,42 ton/ha) dan dosis 175 kg/ha (8,89 ton/ha). Seluruh perlakuan secara ekonomis menguntungkan karena memiliki R/C lebih dari 1. Perlakuan dosis 175 kg/ha memberikan R/C tertinggi yaitu 1,87.ABSTRACT Corn is one of the important crops in Indonesia and has a strategic role in the national economy. The addition of nutrients through fertilization is a way to increase yields. Potassium is a chemical compound that is well known as plant fertilizer. The element of potassium affects plant toughness, stimulates root growth, resistance to pests and diseases, improves seed quality, and is able to overcome water shortages at a certain level. Black Horses fertilizer is an inorganic fertilizer containing 60.03% Potassium (K2O). The purpose of this study was to determine the effect of Black Horses KCl Fertilizer on the growth and production of maize. The research method used was RAK with 9 treatments and 3 replications. The results showed that the application of KCl Black Horses fertilizer was technically and economically effective in increasing productivity at a dose of 125 kg/ha (8.42 tons/ha) and a dose of 175 kg/ha (8.89 tons/ha). All treatments were economically advantageous because they had an R/C of more than 1. The treatment at a dose of 175 kg/ha gave the highest R/C of 1.87.
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