Objective of this research was to obtain optimal dosages of nitrogen and potassium fertilization on growth, yield, and quality of stevia. The research was conducted using Randomized Block Design (RBD) by 3 replications, which was constructed in factorial that comprised of 2 factors. The first factor was dosage of the nitrogen with 4 (four) levels, such as: 100, 150, 200, and 250 kg N ha-1. The second factor was dosage of potassium with 3 (three) levels, such as: 75, 150, and 225 kg K 2 O ha-1. Result of the research showed that significant interaction between nitrogen and potassium fertilization has occurred on parameter of the plant growth, such as number of leaf, leaf area, leaf area index, and the total chlorophyll content. Separate application of nitrogen and potassium fertilization has significantly affected on the plant height, while the stomatal density was only affected by the application of nitrogen. Significant interaction between nitrogen and potassium application has occurred on plant biomass and the yield of leaf during the harvest period I, II, and total. During the period of total harvest, the fertilizing treatments of 200 kg N ha-1 and 225 kg K 2 O ha-1 have harvested fresh leaves and dry leaves for about 2,780 kg ha-1 and 636 kg ha-1 , respectively. The increasing application of nitrogen from 100 to 250 kg N ha-1 has significantly increased the stevioside level of the stevia's leaf linearly in accordance with the equation of Y = 0.000408 X + 0.439.
Research aimed to study the influence of organic and inorganic fertilizers on growth and yield of green bean (Phaseolus vulgaris L.). It was conducted in Andisol soil, Batu, East Java, 900 m above sea level, 24-27 ⁰ C for dry season (from May to July 2013) and rainy season (from January to March 2014). A randomized block design was used to arrange five treatments such as 1) no fertilizers applied; 2) five t ha -1 cow manure; 3) 10 t ha -1 cow manure; 4) 50 kg N ha -1 , 150 kg P 2 O 5 ha -1 and 50 kg K 2 O ha -1 ; and 5) 100 kg N ha -1 , 300 kg P 2 O 5 ha -1 and 100 kg K 2 O ha -1 . All treatments of bean was planted in 4 x 3 m 2 of plot size and 25 x 20 cm 2 of plant spacing. Treatment of 100 kg N ha -1 , 300 kg P 2 O 5 ha -1 and 100 kg K 2 O ha -1 resulted in the highest growth (plant height, leaf number/plant, and leaf area/plant) and yield of pod fresh weight (12.46 t ha -1 , in 2013; 16.51 t ha -1 , in 2014). The lowest growth and yield was showed by no fertilizer application (6.23 t ha -1 , in 2013; 8.36 t ha -1 , in 2014).
This research was conducted to increase production of eggplants through combination of N-source and number of main branch has done on the field of andosol in Poncokusumo -Malang, 600 m asl, pH 5.4, from August to December 2013. The experiment used a Randomized Complete Block Design with 2 factors and 3 replications. Factor 1 was proportion of inorganic -organic N fertilizer (138 kg N ha -1 ): 100% Urea, 75% Urea + 25% goat manure, 50% Urea + 50% goat manure, and 25% Urea + 75% goat manure. Factor 2 was number of main branches: 1, 2 and 3 main branches.Results showed that there was no interaction effect between treatment combinations of organic-inorganic sources of N and the number of main branches to all observed variables. Treatment using the combination of 75% Urea + 25% goat manure increased the plant growth and gave the highest fruit yield (49.20 t ha -1 ) in comparison with combination using other fertilizers and 100% Urea. The lowest was derived from the application of 100% Urea, 35.61 t ha -1. Cultivation of eggplant with 3 main branches has resulted better growth and fruit yield than 1 and 2 main branches, 50.85, 47.91 and 30.79 t ha -1 , respectively.
A research to reduce application of N inorganic fertilizer through combination of inorganic-organic N and EM4 on eggplant has done on paddy field in Poncokusumo, Malang Regency, East Java, from June to September 2013. The experiment used a randomized complete block design with two factors and three replications. The first factor was the combination of inorganic-organic N fertilizer, ie. 100% urea, 75% urea + 25% goat manure, 50% urea + 50% goat manure, and 25% urea + 75% goat manure . The second factor was dose of EM4, ie. 10, 20, and 30 liters EM4 ha -1 . The results showed a reduction in the proportion of urea up to 50% and replace it with goat manure resulted growth and fruit yield of eggplant better than the others. The application of 100% urea gave the lowest fruit yield. Application of EM4 on eggplant enhanced growth and increased fruit yield. EM4 application with doses of 30 liters ha -1 resulted the highest fruit yield, accelerate the decomposition and mineralization of N.
Gurah, Pare, Induk Pare, Pagu, Plemahan, Ngadiluwih, Grogol, Wates, Gempengrejo, Papar, Mojo, Pahing, Setono Betek, Induk Ngronggo and Bandar
The national wheat imported reaches approx.-imately 7 million ton per year, recently. The wheat plantation in Indonesia is strongly affected by the high temperature which triggers the stunned roots. Thus the plan wheat growth and production reduced. The experiment to investigate of selectedlocal wheat lines which were already established in Indonesia and resistant to drought effect. The level of drought influence on several growth parameters of vegetative plant and thus affected to seeds production as well as on total yield. The results show that the introduced-variety of wheat line, SO3 shows the significant tolerant to drought and able to maintain the SRL (specific root length) and increase the proline contents to with stand the drought condition compare to other lines (M7 and M8). The proline as amino acid climbed extremely effected by drought, in contrast the root growth in particular their length reduced. Those plant conditions influence the plant vegetative growth and generative phases, especially for seed production. Additionally, the M8 and SO3 selected-line presents the stability on yield production compare to other varieties, since it able maintain the content of proline and ratio of root length. Therefore, those selected lines are appropriate to grow in Indonesia which produces at approximately 3.5 t ha -1 .
Indigenous vegetable production is a primary source of revenue for micro-scale vegetable farmers in East Java Province. Despite the, information about consumer preference on the quality attribute of the indigenous vegetables is still lack. Thus, the study purposed to determine consumer preferences on the quality attribute of leafy greens basil, kenikir and watercress to improve the quality on the farm level. The research conducted through consumer survey in seven sites, namely Surabaya, Malang, Kediri, Madiun, Jember, Bojonegoro, Pamekasan, East Java Indonesia from July to August 2017. The site selection based on sociocultural and the composition of diverse communities. From seven sites, a total of 210 female respondents interviewed randomly. Consumer preferences on the quality attributes concluded by the method based on rank orders and analyzed with Chi-square. The experimental results showed that consumer preference for quality attributes depend on the vegetable. For basil: leaf color was light green, a large number of leaves, without a flower, medium leaf size (3.5 cm diameter), number of branches/stalk, no spicy taste, and smells stung. For kenikir: leaf color was light green, a large number of leaves, without a flower, medium smell, a large number of branches/stem, the texture of stem not fibrous, and no bitter taste. For watercress: leaf color was green, a large number of leaves, medium stem size, soft leaf, and slightly sweet flavor. ABSTRAKProduksi sayuran indigenous merupakan sumber pendapatan penting bagi petani sayuran skala kecil di Provinsi Jawa Timur. Namun demikian, kriteria kualitas yang diinginkan oleh konsumen masih belum seluruhnya dipetakan, oleh sebab itu, pengkajian dilakukan agar dapat di identifikasi preferensi konsumen terhadap kualitas sayuran kemangi, kenikir dan selada air dalam rangka perbaikan kualitas di tingkat petani. Survei konsumen dilakukan di tujuh wilayah di Jawa Timur, yaitu Surabaya, Malang, Kediri, Madiun, Jember, Bojonegoro, dan Pamekasan pada bulan Juli sampai Agustus 2017. Pemilihan wilayah didasarkan pada sosiokultur dan komposisi masyarakat yang beraneka ragam. Dari 7 wilayah tersebut, wawancara dilakukan dengan total 210 responden wanita yang ditentukan secara acak. Preferensi pengguna terhadap sifat kualitas sayur-sayuran dianalisis menggunakan Chi-square. Hasil analisis menunjukkan bahwa, preferensi pengguna terhadap sifat kualitas tergantung pada jenis sayurannya. Sayur kemangi yang disukai adalah memiliki warna daun muda, jumlah daun banyak, ukuran daun medium (garis tengah 3.5 cm), tidak terdapat bunga, total cabang/tangkai lebat, rasa tidak pedas, dan berbau menyengat. Sayur kenikir yang disukai adalah warna daun muda, jumlah daun banyak, tidak terdapat bunga, berbau sedang, jumlah cabang/tangkai banyak, tekstur batang tidak berserat, dan rasa tidak getir. Sayur selada air yang disukai adalah warna daun muda, jumlah daun banyak, ukuran batang sedang, berdaun lunak, dan rasa agak manis.Kata kunci: kemangi, kenikir, kualitas sayuran, preferansi konsumen, selada...
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