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Dumroese, R. Kasten. "Growth of Juniperus and Potentilla using Liquid Exponential and Controlled-release Fertilizers". HortScience 38, n.º 7 (diciembre de 2003): 1378–80. http://dx.doi.org/10.21273/hortsci.38.7.1378.
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Juniperus scopularum Sarg. (Rocky Mountain juniper) and Potentilla fruticosa L. `Gold Drop' (gold drop potentilla) plants grown in containers had similar or better morphology, higher nitrogen concentrations and contents, and higher N-use efficiency when grown with liquid fertilizer applied at an exponentially increasing rate as compared to the same amount of N applied via controlled-release fertilizers. More importantly, plants grown with a half-exponential rate were similar to those grown with controlled-release fertilizer but with a higher N-use efficiency, indicating that this type of fertilization may be a method for reducing the amounts of applied nutrients in nurseries and subsequent nutrient discharge.
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Fisher, James T., Gregory A. Fancher y Earl F. Aldon. "Factors affecting establishment of one-seed juniper (Juniperusmonosperma) on surface-mined lands in New Mexico". Canadian Journal of Forest Research 20, n.º 7 (1 de julio de 1990): 880–86. http://dx.doi.org/10.1139/x90-118.
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Containerized one-seed juniper (Juniperusmonosperma (Engelm.) Sarg.) were planted on two northern New Mexico mine spoils to evaluate effects of establishment methods and postplanting site conditions on seedling survival and growth. Establishment factors included planting date, mulch, fertilizer regimes, and seedling protection. Wood chip mulch and animal protection provided by rigid plastic mesh tubes or plastic netting improved juniper survival, growth, or both, depending on the study. The forms and rates of fertilizers tested provided no benefits and sometimes decreased survival. Juniper fertilization at planting stimulated the growth of reseeded grass and resulted in greater competition. Perennial weeds that invaded a mechanically cleared planting site also reduced juniper growth and survival. Results point to the need to consider the adverse effects associated with fertilization, time of planting, and order of grass and juniper revegetation.
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Rathier, Thomas M. y Charles R. Frink. "Nitrate in Runoff Water from Container Grown Juniper and Alberta Spruce Under Different Irrigation and N Fertilization Regimes". Journal of Environmental Horticulture 7, n.º 1 (1 de marzo de 1989): 32–35. http://dx.doi.org/10.24266/0738-2898-7.1.32.
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Abstract Juniperus horizontalis Moench ‘Plumosa Compacta Youngstown’ (compact Andorra juniper) and Picea glauca Moench (Voss) ‘Conica’ (dwarf Alberta spruce) were grown for one season in 2.2 1 (#1) nursery containers in a potting medium containing composted hardwood bark, sphagnum peat moss and sand (1:1:1 by vol). The containers were placed over lysimeters permitting continuous collection and measurement of water passing through and around the containers. Slow release or soluble N was applied at an annual rate of 1.6 g of N per pot. Containers were irrigated by either trickle or overhead methods and water volumes were recorded. Subsamples of leachate were collected and analyzed for nitrate. Much less nitrate was leached by the trickle than by the overhead irrigation. Although slow release N sources lost considerably less nitrate in runoff water, there is still sufficient nitrate lost by these sources to pollute ground water unless annual fertilizer needs are supplied by split applications. Depending on sources, 58–80% of the N applied as slow release fertilizers was not recovered in either the plant or runoff water.
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Graora, Draga, Radoslava Spasic y Milica Ckrkic. "Carulaspis juniperi (Bouche)-juniper pest (Juniperus spp.) in the Belgrade area". Archives of Biological Sciences 62, n.º 4 (2010): 1207–14. http://dx.doi.org/10.2298/abs1004207g.
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The scale insect, Carulaspis juniperi (Bouche) (Hemiptera: Diaspididae), is a significant pest on juniper (Juniperus spp.). Its population number has increased in the Belgrade area in recent years. It is present in large numbers on plant twigs, needles and cones, and causes a slowdown in growth, needle chlorosis and premature needle fall, the loss of aesthetic value, drying of branches and whole plants. The presence and attack intensity of C. juniperi were determined on Juniperus spp. in 19 localities in the Belgrade area in 2007 and 2008. Its life cycle and harmfulness were also studied. C. juniperi develops one generation per year and overwinters as a fertilized female on juniper branches and needles. Oviposition starts at the end of April and beginning of May. The number of eggs laid by a single female is 16- 44. First instar larvae hatch in May and second instars appear at the beginning of June. At the end of June and in July males and females form. After copulation the males die and the fertilized females remain on the plants feeding until overwintering.
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HICKLENTON, PETER R. y K. B. McRAE. "MINERAL STATUS AND GROWTH OF CONTAINERIZED COMPACT ANDORRA JUNIPER UNDER DIFFERENT IRRIGATION AND FERTILIZER REGIMENS". Canadian Journal of Plant Science 69, n.º 4 (1 de octubre de 1989): 1295–300. http://dx.doi.org/10.4141/cjps89-157.
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Juniperus horizontalis ’Plumosa Compacta’ were grown in 3.8-L containers to compare the factorial effects of irrigation (top vs. capillary) and controlled release fertilizer placement (incorporated vs. surface-applied) on shoot nutrient content and growth. These treatments were compared with a liquid fertilized control. Shoot N contents on 30 June (31 d after potting) were highest in plants which were top-irrigated and supplied with incorporated Nutricote, but were lowest in these plants at the end of the season (28 Sept.). Top-irrigated, Nutricote-incorporated, and liquid-fertilized plants showed the highest shoot K contents on 30 June. Lowest shoot K occurred in the top-irrigated, Nutricote-incorporated treatment on 28 Sept. In comparison with N or K, shoot P showed much less variation over the growing season. Incremental branch growth was less when fertilizer was surface-applied than when it was incorporated, but end-of-season shoot dry weights were similar in all plants except those which were top irrigated and supplied with incorporated Nutricote. This treatment produced the highest end-of-season shoot dry weight and best overall growth. Seasonal growth was positively correlated with early season (30 June) shoot N and K contents.Key words: Controlled release fertilizer, Nutricote, irrigation, Juniper
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Nowak, Kinga, Marian J. Giertych, Emilia Pers-Kamczyc, Peter A. Thomas y Grzegorz Iszkuło. "Rich but not poor conditions determine sex‐specific differences in growth rate of juvenile dioecious plants". Journal of Plant Research 134, n.º 5 (16 de abril de 2021): 947–62. http://dx.doi.org/10.1007/s10265-021-01296-2.
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AbstractCauses of secondary sexual dimorphism (SSD) in dioecious plants are very poorly understood, especially in woody plants. SSD is shown mainly in mature plants, but little is known about whether secondary sexual dimorphism can occur in juveniles. It is also assumed that stress conditions intensify differences between the sexes due to the uneven reproductive effort. Therefore, the following research hypotheses were tested: (1) secondary sexual dimorphism will be visible in juveniles; (2) unfavourable soil conditions are the cause of more pronounced differences between the sexes. Rooted shoots of the common yew (Taxus baccata L.) and common juniper (Juniperus communis L.), previously harvested from parental individuals of known sex were used in the study. During two growing seasons vegetation periods and four times a year, comprehensive morphological features of whole plants were measured. Some SSD traits were visible in the analysed juveniles. Contrary to expectations, differences were more pronounced in the fertilized treatment. Both species reacted to fertilization in different ways. Female yew had a clearly higher total plant mass, root mass, and mean root area when fertilized, whereas male juniper had a higher root mass when fertilized. Differences between the sexes independent of the fertilization treatment were seen, which can be interpreted as sexual adaptations to a continued reproduction. Female yews and male junipers made better use of fertile habitats. Our study showed that SSD may be innate, and sexual compensatory mechanisms could generate uneven growth and development of both sexes. Because the SSD pattern was rather different in both species, it was confirmed that SSD is connected with the specific life histories of specific species rather than a universal strategy of dioecious species.
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Hicklenton, Peter R. "Growth of Capillary-Irrigated Andorra Juniper and Sarcoxie Euonymus as Affected by Controlled Release Fertilizer Type and Placement". Journal of Environmental Horticulture 8, n.º 2 (1 de junio de 1990): 92–95. http://dx.doi.org/10.24266/0738-2898-8.2.92.
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Abstract Juniperus horizontalis Moench. ‘Plumosa compacata’ and Euonymus fortunei Turcz. ‘Sarcoxie’ were grown on a sand capillary bed with two types of controlled release fertilizer (3:1 Type 100:Type 40 Nutricote 16N-4.4P-8.1K (16-10-10),and Osmocote 18N-2.6P-9.7K (18-6-12) either medium-incorporated, surface-applied or dibbled below the roots. Throughout the growing season, neither leaf area, root or shoot dry weight of euonymus was affected by fertilizer type or placement. Branch length growth and dry weight of juniper was not affected by fertilizer type when fertilizer was surface-applied or medium incorporated. Dibbled Osmocote produced similar results, but dibbled Nutricote resulted in poor root and shoot development in juniper throughout the season. Medium soluble salt concentration (determined on container leachate) was 2800 dS/m in the dibbled Nutricote treatments in June (approximately 2.5 times higher than that in the other treatments). Soluble salts decreased between June 21 and August 16 in all treatments and then remained quite constant until the end of the season (September 13).
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Hicklenton, Peter R. "Growth Analysis of ‘Plumosa Compacta’ Juniper and ‘Coral Beauty’ Cotoneaster Subjected to Different Nitrogen Fertilizer Regimes". Journal of Environmental Horticulture 8, n.º 4 (1 de diciembre de 1990): 192–96. http://dx.doi.org/10.24266/0738-2898-8.4.192.
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Abstract ‘Plumosa Compacta’ juniper (Juniperus horizontalis Moench.) and ‘Coral Beauty’ cotoneaster (Cotoneaster dammeri C. K. Schneid.) were container grown in a bark:peat-sand medium (2:1:1 by vol.). Plants received either 70, 140, 280 or 420 mg (0.003, 0.005, 0.010 or 0.015 oz) N per week from nutrient solutions. Growth was assessed on plants harvested from each treatment regime on May 22 and then at monthly intervals until September 16. Juniper plants grown with 140 mg (0.005 oz) N per week were larger at the end of the season than those in the other treatments. In cotoneaster, growth increased as weekly N application increased from 70 to 420 mg (0.03 to 0.015 oz) N per week. Path analysis was used to quantify the effect of plant relative growth rate (RGR) during each month on RGR in subsequent months and on total seasonal relative dry weight gain (TRWG). RGR during each month significantly influenced TRWG, with the periods from June 21 to July 20, and from July 21 to August 18 exerting the greatest influence in cotoneaster. In juniper, the influence of RGR in each month on TRWG was equal. For both cotoneaster and juniper, increasing RGR during one month tended to have a negative influence on RGR during subsequent months.
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Seyyed, Fazal Jawad y Hafsa Ashfaq. "Engro Fertilizers Limited: Cost of Capital and Valuation". Asian Case Research Journal 23, n.º 02 (diciembre de 2019): 313–30. http://dx.doi.org/10.1142/s0218927519500123.
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The case is based on Engro Fertilizers Limited (EFERT), a company listed on the Pakistan Stock Exchange and an important player in the fertilizer sector of Pakistan. The case describes the role of a senior equity analyst at Intermarket Securities Limited (IMS), Qasim Ahmad, who is preparing the Intermarket Pulse report on Pakistan’s fertilizer sector. The upcoming report, due on 16 February 2017, requires a comprehensive analysis. Qasim gathered the background information on the fertilizer sector in Pakistan as well as EFERT and asked a newly hired junior analyst to prepare an estimate of EFERT’s cost of capital. Now Qasim has to review the workings of the new hire and then prepare the cash flow forecast to determine the stock’s target price.
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Hicklenton, Peter R. y Kenneth G. Cairns. "Solubility and Application Rate of Controlled-release Fertilizer Affect Growth and Nutrient Uptake in Containerized Woody Landscape Plants". Journal of the American Society for Horticultural Science 117, n.º 4 (julio de 1992): 578–83. http://dx.doi.org/10.21273/jashs.117.4.578.
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Nutrient release from Nutricote Type 100 (100-day N release; 16N-4.4P-8.1K), and from a 1:3 mixture of Nutricote Type 40 (40-day N release; 16N-4.4P-8.1K) and Type 100 was affected by time and temperature. The Type 40/100 mixture released nutrients more rapidly over a 5 to 35C range in laboratory studies. Seasonal growth of containerized cotoneaster (Cotoneaster dammeri C.K. Schneid `Coral Beauty') and juniper (Juniperus horizontalis Moench. `Plumosa Compacta') increased with increasing application rates of either Nutricote Type 100 or a 1:3 mixture of Type 40/100 over the range 2-10 kg·m-3. Between 25 June and 27 July, cotoneaster grew more rapidly in media with Type 40/100 Nutricote, but by the end of the season (27 Sept.), fertilizer type showed no effect on plant dry weight. Shoot N was higher in cotoneaster plants grown with Type 40/100 Nutricote than with the Type 100 formulation during the first 2 months of growth, reflecting the more rapid release and uptake of N from the mixture. During the last month the situation was reversed, as nutrients from the Type 40/100 mixture were depleted. Potassium and P shoot concentrations were not affected by fertilizer type. Juniper growth and shoot concentrations of N, K, and P were not affected by fertilizer type at any time during the season. The results provided no evidence that seasonal growth could be enhanced in either cotoneaster (grows rapidly) or juniper (slower growing) by mixing rapid and more slowly releasing types of Nutricote.
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Sulasti, Ni Luh Rani, I. Made Anom Sutrisna Wijaya y Ida Ayu Rina Pratiwi Pudja. "Tingkat Kepuasan Petani Bawang Prei (Allium ampeloprasum L.) terhadap Penggunaan Pupuk Organik di Desa Candikuning, Baturiti, Tabanan, Bali." Jurnal BETA (Biosistem dan Teknik Pertanian) 8, n.º 2 (6 de noviembre de 2019): 176. http://dx.doi.org/10.24843/jbeta.2020.v08.i02.p01.
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Bawang prei merupakan salah satu tanaman hortikultura yang banyak dibudidayakan oleh petani di Desa Candikuning sejak 10 tahun terakhir. Salah satu pupuk organik yang di gunakan oleh petani bawang prei adalah pupuk organik Postal yang terbuat dari campuran kotoran ayam dan sekam (kulit gabah). Penelitian bertujuan untuk menganalisis tingkat kepuasan petani dan mengidentifikasi faktor-faktor yang mempengaruhi kepuasan petani sebagai konsumen pupuk. Data yang dikumpulkan melalui survei acak mengunakan kuisioner dan wawancara pada 50 orang petani bawang prei yang menggunakan pupuk organik Postal di Desa Candikuning pada bulan April-Mei 2019. Analisis dilakukan dengan metode Deskriptif, Importance-Performance Analysis (IPA), dan Customer Satisfaction Index (CSI). Hasi dari penelitian ini menunjukkan bahwa pengguna pupuk organik postal didominasi oleh petani kelompok umur produktif (58%), tingkat pendidikan setingkat SD-SMP (84%), Pekerjaan sampingan di bidang pertanian (66%). Rata-rata tingkat kesesuaian antara harapan dan kinerja produk sebesar 100,17 %. Petani merasa puas (CSI : 72,27%) pada kinerja pupuk organik Postal. Kesimpulan dari penelitian ini adalah kepuasan petani pengguna pupuk organik pada tanaman bawang prei sebesar 72,27 % yang berarti petani merasa puas. Kepuasan petani dipengaruhi oleh kemampuan meningkatkan hasil, harga produk dan kemasan produk.
Leek is one of the horticultural crops that is widely cultivated by farmers in Candikuning Village since the last 10 years. One of the organic fertilizers used by leek farmers is postal organic fertilizer made from a mixture of chicken manure and husks (grain husks). The research aims to analyze the level of satisfaction of farmers and identify the factors that influence the satisfaction of farmers as consumers of fertilizer. Data collected through a random survey using questionnaires and interviews with 50 farmers of leeks using organic fertilizer Postal in Candikuning Village in April-May 2019. Analysis was conducted using descriptive methods, Importance-Performance Analysis (IPA), and Customer Satisfaction Index ( CSI). The results of this study indicate that postal organic fertilizer users are dominated by productive age farmers (58%), elementary-junior high school level education (84%), side jobs in agriculture (66%). Farmers were satisfied (CSI: 72.27%) on the performance of Postal organic fertilizer. The conclusion of this study is the satisfaction of farmers who use organic fertilizer on leek plants by 72.27%, which means farmers are satisfied. Farmer satisfaction is influenced by the ability to increase yields, product prices and product packaging.
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Starr, Zachariah W., Cheryl R. Boyer y Jason J. Griffin. "Eastern Redcedar (Juniperus virginiana) as a Substrate Component Effects Growth of Three Tree Species". Journal of Environmental Horticulture 30, n.º 4 (1 de diciembre de 2012): 189–94. http://dx.doi.org/10.24266/0738-2898.30.4.189.
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Sustainable and local alternative substrates are being explored for nursery crop production due to concern over pine bark (PB) supplies and costs. This study evaluated a tree species which is weedy in the Great Plains region of the United States, eastern redcedar, processed through a hammer mill equipped with a 19 mm (3/4 in) screen size to create six substrates consisting of 0, 5, 10, 20, 40, and 80% eastern redcedar chips (ERC) and 20% sand; the remaining volume was composed of PB. Each of these substrates were then used to grow baldcypress (Taxodium distichum), Chinese pistache (Pistacia chinensis), and silver maple (Acer saccharinum) under two fertilizer rates: either a 4.5 kg·m−3 (7.5 lbs·yd−3) low fertilizer rate or a 8.9 kg·m−3 (15 lbs·yd−3) high fertilizer rate. Substrates composed of 40 and 80% ERC had reduced container capacity, resulting in less growth of all three species. Plants responded similarly to both fertilizer rates suggesting that the limiting factor to plant growth is substrate physical properties. Plants grown in 5–20% ERC were of comparable size and quality to those grown in the control substrate. Therefore, ERC can be recommended as a PB substrate supplement, but not as a full replacement at this time.
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Oliveira, Marcus Vinicius Araujo Mello de, Roberto Lyra Villas Bôas, Carlos Jesus Baca Garcia y Fernanda Regina Nascimento. "UNIFORMIDADE DE DISTRIBUIÇÃO DE POTÁSSIO NUM SISTEMA DE IRRIGAÇÃO POR GOTEJAMENTO QUANDO APLICADO POR DIFERENTES INJETORES". IRRIGA 8, n.º 3 (4 de diciembre de 2003): 234–41. http://dx.doi.org/10.15809/irriga.2003v8n3p234-241.
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UNIFORMIDADE DE DISTRIBUIÇÃO DE POTÁSSIO NUM SISTEMA DE IRRIGAÇÃO POR GOTEJAMENTO QUANDO APLICADO POR DIFERENTES INJETORES Marcus Vinicius Araujo Mello de Oliveira¹Roberto Lyra Villas BoasCarlos Jesus Baca GarciaFernanda Regina NascimentoDepartamento de Recursos Naturais, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, CP 237, CEP 18603-970. E-mail: mvamol@fca.unesp.br 1 RESUMO O presente trabalho objetivou comparar a uniformidade de distribuição do potássio em um sistema de irrigação por gotejamento quando utilizado um injetor venturi, uma bomba elétrica Multifertic e uma bomba injetora hidráulica proporcional Dosmatic, ambas de pistão. O experimento foi conduzido na área de experimentação do Departamento de Engenharia Rural da Faculdade de Ciências Agronômicas, Unesp campus de Botucatu – SP. Foram escolhidos quatro tempos de injeção: 10, 15, 20 e 25 minutos; sendo recolhidas amostras de solução em diferentes momentos durante e após a injeção do produto. As amostras coletadas tiveram seu teor de potássio determinado via fotometria de chama. Com os resultados obtidos concluiu-se que: 1) não ocorreu variação significativa na uniformidade de distribuição do potássio devido aos injetores utilizados; 2) maiores tempos de injeção possibilitam melhores uniformidades de distribuição, sendo que para sistemas com 200 m de linhas laterais tempos a partir de 20 minutos de injeção podem ser empregados e 3) não houve influência da concentração inicial no tempo de estabilização da fertirrigação. UNITERMOS: fertirrigação, injetores de fertilizantes, injetor venturi, bombas injetoras, distribuição de fertilizantes. OLIVEIRA,M. V. M. de; VILLAS BOAS, R. L.; BACA, C. J. G.; FARIAS, M. F. de; DALRI, A. B.; LEITE JUNIOR, J. B.; NASCIMENTO, F. R. DISTRIBUTION UNIFORMITY OF POTASSIUM IN DRIP IRRIGATION SYSTEM WHEN APPLIED BY DIFFERENT FERTILIZER INJECTORS 2 ABSTRACT The objective of this paper was to compare the potassium distribution uniformity when applied using three fertilizer injectors in field conditions. The experiment was carried out in the experimental area of the Rural Engineering Department, Agricultural Science College – UNESP, in Botucatu – SP. A venturi injector, an electrical pump and a proportional hydraulic pump were the equipments used for fertilizer injection. Four-injection time periods (10, 15, 20 and 25 minutes) have been chosen to study potassium distribution uniformity. The solution samples were picked up in different moments over and after the product injection. The sample potassium contents were measured using flame photometry. According to the obtained results the conclusions were as follows: 1) there was no difference in potassium distribution uniformity among the injectors, 2) longer injection intervals enable better distribution uniformity and irrigation systems with 200 m length lateral lines can use 20-minute minimum injection intervals and 3) there was no influence of initial concentration on fertigation stabilization time. KEYWORDS: fertigation, fertilizers injection, venturi injector, injector pump, fertilizer distribution
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Walden, Ronald F. y Alex X. Niemiera. "An Irrigation Management Method to Reduce the Nitrogen Content of Effluent from Nursery Containers". HortScience 31, n.º 4 (agosto de 1996): 659c—659. http://dx.doi.org/10.21273/hortsci.31.4.659c.
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Container nurseries often irrigate daily with a fixed amount of water that exceeds the water-holding capacity of the container substrate, thus, leaching a portion of the applied water and nutrients. We compared the influence of daily container irrigation based on substrate moisture tension (SMT) to that of daily irrigation with a set amount on irrigation volume, container effluent volume, total effluent N content, and plant growth. Rhododendron, Ilex, and Juniperus were grown outdoors in 11.3-L containers in a pine bark-based substrate at four rates of fertilization with a controlled-release fertilizer. Drip irrigation was applied each morning until an electronic tensiometer signaled an irrigation controller that SMT was less than a set value corresponding to container capacity. Irrigation at 1.5 cm·d–1 served as the control. Irrigation treatment had little influence on growth and no influence on growth response to fertilizer rate. Irrigation volume, effluent volume, and total effluent N content were lower for each species when irrigation was based on SMT. For Juniperus, irrigation volume, effluent volume, and total effluent N content were 62%, 69%, and 60% less, respectively, for tension-based irrigation than for irrigation with a set amount.
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Nursetiawati, S., D. P. Josua, D. Atmanto, F. Oktaviani y A. L. Fardani. "Science Education in the Family Environment with the Experimental Method of Facial Cosmetics Plant Fertilization in the Covid-19 Pandemic Era". Jurnal Pendidikan IPA Indonesia 9, n.º 4 (31 de diciembre de 2020): 561–73. http://dx.doi.org/10.15294/jpii.v9i4.26563.
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The physical and non-physical family environment is one of the most critical factors in student learning outcomes. This research was assessed using a mixed-method descriptive qualitative and quantitative method to see how the family environment, both physical and non-physical, with experimental science learning was conducted on 60 Junior High School students. The requirements of the respondents in this study were 30 open school students and 30 non-open school students. The results showed that: (a) family involvement motivates students when conducting experiments; (b) the feasibility of the physical environment of the family allows students to complete the experiment of making simple liquid fertilizers to the application of these fertilizers to cosmetic plants, (c) students can complete the experiment by giving directions to the online method because of the high involvement family in the learning process. Other studies state that the family environment in the form of parents ‘expectations of students’ future careers in science is the main reason for high family participation in the experimental process to provide maximum student experimental results. In conclusion, the family’s physical and non-physical environment dramatically determines and encourages students to optimize experimental science learning methods so that science education applied during the Covid-19 pandemic by studying at home can be continued and carried out experimentally. The New Normal Education Model through online and non-online methods for science learning can still be done at home, with the involvement of the family’s physical and non-physical environments that support students to complete experiment-based science learning projects. Independent learning in junior high school students can also be done by providing direct control between educators and the students’ non-physical environment, namely parents, to remain motivated.
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Henry, Paul H., Frank A. Blazich, L. Eric Hinesley y Robert D. Wright. "Nitrogen Nutrition of Containerized Eastern Redcedar. I. Growth, Mineral Nutrient Concentrations, and Carbohydrate Status". Journal of the American Society for Horticultural Science 117, n.º 4 (julio de 1992): 563–67. http://dx.doi.org/10.21273/jashs.117.4.563.
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Containerized seedlings of eastern redcedar (Juniperus virginiana L.) were fertilized weekly for 175 days with a solution containing 50 ppm P, 150 ppm K, and either 0, 5, 10, 20, 40, 80, 160, 320, or 640 ppm N. Plant height, stem diameter, and shoot and root dry weights increased asymptotically with applied N; 640 ppm N diminished response. Growth after 175 (height, stem diameter) and 180 (shoot and root dry weights) days was optimal (90% of maximum) at N concentrations of 115, 155, 230, and 105 ppm, respectively, 1.5% foliar N optimized height growth. Foliar concentrations of N, P, and K increased in treated plants over the duration of the experiment, while Ca, Mg, and Mn decreased or remained constant. Starch concentration of fertilized plants decreased sharply after initiation of the experiment, but controls showed little change during the first 120 days. Sucrose concentration remained constant over the summer but increased sharply in late fall. At 180 days, foliar concentrations of starch, sucrose, hexose, N, P, K, and B increased asymptotically with applied N; concentrations of Ca, Mg, and Mn decreased.
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BIGRAS, F. J., J. A. RIOUX, H. P. THERRIEN y R. PAQUIN. "ACTION DES FERTILISATIONS TARDIVES SUR LE GENÉVRIER (Juniperus chinensis ’Pfitzerana Aurea’) CULTIVÉ EN CONTENANTS". Canadian Journal of Plant Science 69, n.º 3 (1 de julio de 1989): 967–77. http://dx.doi.org/10.4141/cjps89-118.
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Three-year-old plants of Juniperus chinensis ’Pfitzerana Aurea’ grown in containers were fertilized until August, September or October. Frost tolerance, water, mineral, total sugar, and starch content of shoots and roots were followed during the fall. Fall fertilization increased N and K content in the shoots and roots and accelerated shoot spring growth. Contents of P, Ca, Mg, Fe and Mn in the shoots and roots were not modified by the late fertilization regimes in the fall. Hardening of mature root and shoot was not affected by the prolongation of fertilization. Young roots did not harden. Water content of shoots decreased during hardening. The variability of root water content was too important to allow a detection of any reduction. At the end of fall, starch was almost completely hydrolyzed in shoots while it remained in appreciable quantity in roots. Total sugars increased more in shoots than in roots during the fall. The prolongation of fertilization had no influence on the total sugar or starch accumulation in shoots. Prolongation of the fertilization until October increased the starch and sugar content in roots.Key words: Juniperus chinensis ’Pfitzerana Aurea’, cold hardiness, growth, fertilization, water content, sugars, starch
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Henry, Paul H., Frank A. Blazich y L. Eric Hinesley. "Nitrogen Nutrition of Containerized Eastern Redcedar. II. Influence of Stock Plant Fertility on Adventitious Rooting of Stem Cuttings". Journal of the American Society for Horticultural Science 117, n.º 4 (julio de 1992): 568–70. http://dx.doi.org/10.21273/jashs.117.4.568.
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Hardwood stem cuttings of eastern redcedar (Juniperus virginiana L.), taken from containerized stock plants fertilized weekly with 0, 5, 10, 20, 40, 80, 160, 320, or 640 ppm N, were treated with 7500 ppm IBA and placed under intermittent mist for 12 weeks. Foliar starch and sucrose concentrations within cuttings at time of excision were significantly correlated with percent rooting and root length, respectively. Of the mineral nutrients analyzed (N, P, K, Ca, Mg, Mn, and B), only B and K were significantly correlated with rooting response. A threshold N level (20 ppm), applied weekly, maximized rooting; higher concentrations decreased response. Although N fertilization of stock plants affected adventitious rooting, there were no significant correlations between foliar N levels and measures of rooting response. Chemical name used: 1 H- indole-3-butyric acid (IBA).
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Huang, Zhan Bin, Lu Han Liu, Wu Nan Li, En Tong Liu, Yu Xuan Sun y Xin Gan Hu. "Evaluation the Effect of SFO on Plant Growth and Soil Properties in Deicing Agent Contaminated Soil". Advanced Materials Research 807-809 (septiembre de 2013): 1311–17. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.1311.
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In order to reduce the damage of deicing salt to green belt soil in highway, the research used organic multi-fertilizer SFO featured with water conservation and anti-deicing salt to test the effect on plant growth and soil moisture and ion composition in Jingcheng high way, Beijing, It set 12 t/hm27.5 t/hm24.5 t/hm2 dosage processing in test Experimental index include plant growth, soil moisture, ion composition and the improvement effect of saline-alkali soil. In treatment of 4.5 t/hm2 and 7.5 t/hm2 SFO dosage, the fresh treetop growth of Juniper were increased 25.9% and 85.7% higher than that of CK, but less than that in treatment of 12 t/hm2 dosage. The soil moisture in all treatments was improved 0.8% -2.1% high than that in CK. The analysis showed that SFO can regulate the ion balance of soil, Ca2+Mg2+K+ content of soil in all treatments were raised as the increasing of SFO dosage, but the Na+Cl-ion contens decreased 38% and 48% on average than that of CK,and the Sodium Adsorption Ratio (SAR) significantly was reduced markedly. In which the 7.5 t/hm2 dosage treatment of SFO is the best effect. The results certificated that SFO has the comprehensive effect on reducing soil salinization and can improve soil structure and the soil moisture, and can be applied in controlling soil salinization of green belt caused by using deicing salt in high way widely.
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Bokan, Nikola, Đura Karagić, Vojislav Mihailović, Dalibor Tomić, Vladeta Stevović y Branko Milošević. "Effect of Liming on Grain Yield of Field Peas". АГРОЗНАЊЕ 14, n.º 4 (27 de diciembre de 2013): 631. http://dx.doi.org/10.7251/agren1304631b.
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Growing field pea for grain and forage is an integral part of the livestock development strategy, due to its importance as a good source of protein in improving milk and meat production. This is of particular relevance to livestock producers in Central Serbia who experience problems in alfalfa production on acidic soils. As a legume, field pea also plays a valuable role in crop rotations. More recently, field pea has been used as an important crop in organic and sustainable farming systems. Under non-irrigated conditions, grain yield of spring pea cvs. ‘NS-Junior’ and ‘Javor’ was evaluated in 2011 and 2012 on an acidic soil receiving amendment applications. A field trial was established in Čačak (43°54'39.06" N, 20°19'10.21" E, 246 m a.s.l.) on an alluvial soil acid in reaction (pHH2O 4.8). The experimental field was fertilized with 300 kg ha-1 N15P15K15. The treatments used included an unfertilized control and liming at 3t ha-1 and 6t ha-1. The experiment was laid out in a completely randomized block design with four replications. Plot size was 5m2 (1x5m). In both years, the average grain yield of cv. ‘NS-Javor’ was significantly higher than in cv. ‘Junior’. No significant differences were observed between the control and the lime treatments. Grain yield in both years was significantly below the genetic potential of the cultivars tested, mostly due to deficient rainfall and severe soil and air drought conditions.
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BRAGA, BRENNDA BEZERRA, Franklin Aragão Gondim, Francisco Holanda Nunes Junior, Sabrina Isabel De Oliveira Paiva, Rifandreo Monteiro Martins y Roberto Albuquerque Pontes Filho. "EFEITOS DA SUPLEMENTAÇÃO COM RESÍDUO DA ATIVIDADE DA CARCINICULTURA EM PLANTAS DE GIRASSOL SUBMETIDAS A CONDIÇÕES DE ESTRESSE HÍDRICO". IRRIGA 22, n.º 3 (18 de junio de 2018): 591–605. http://dx.doi.org/10.15809/irriga.2017v22n3p591-605.
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EFEITOS DA SUPLEMENTAÇÃO COM RESÍDUO DA ATIVIDADE DA CARCINICULTURA EM PLANTAS DE GIRASSOL SUBMETIDAS A CONDIÇÕES DE ESTRESSE HÍDRICO BRENNDA BEZERRA BRAGA1; FRANSCISCO HOLANDA NUNES JUNIOR2; SABRINA ISABEL DE OLIVEIRA PAIVA1; RIFANDREO MONTEIRO BARBOSA1; ROBERTO ALBUQUERQUE PONTES FILHO1 E FRANKLIN ARAGÃO GONDIM1* 1Instituto Federal de Educação, Ciência e Tecnologia do Estado do Ceará – Campus Maracanaú. Av. Contorno Norte, 10, Distrito Industrial, Maracanaú, Ceará, Brasil. Email: brenndabraga94@gmail.com; sabrinaisabel_@hotmail.com; rifandreo@gmail.com; Roberto.consultorambiental10@gmail.com; *aragaofg@yahoo.com.br (autor correspondente). 2Instituto Federal de Educação, Ciência e Tecnologia do Estado do Ceará – Campus Jaguaribe. Av. B - Bairro Manoel Costa Moraes, Jaguaribe, Ceará, Brasil. Email: holandajrb@gmail.com 1 RESUMO Objetivou-se identificar os efeitos da utilização de resíduo de carcinicultura sobre o crescimento e sistema enzimático antioxidativo de girassol em condições de estresse hídrico. O trabalho foi conduzido na casa de vegetação do Instituto Federal do Ceará – campus Maracanaú, Ceará, Brasil. As sementes foram semeadas em baldes contendo: 1) areia de granulometria fina; 2) areia + adubo; 3) areia + 7g de resíduo de carcinicultura; 4) areia + 14g de resíduo de carcinicultura. Decorridos 16 dias da semeadura, metade de cada grupo de plântulas descrito foi submetido à suspensão de rega. Foram realizadas 2 coletas:19 e 21 dias após a semeadura. Determinaram-se: as matérias frescas e secas da parte aérea, das raízes e total e as atividades das enzimas antioxidativas em folhas e raízes. De modo geral, a utilização de resíduo de carcinicultura no substrato proporcionou melhoria no crescimento das plantas. Isso pode ter ocorrido devido ao aumento nas atividades das enzimas antioxidativas. Em condições controle, a aplicação de 14g de resíduo ocasionou maiores produções de matéria seca total e atividades das enzimas antioxidativas. Concluiu-se que o resíduo de carcinicultura pode ser uma alternativa aos fertilizantes, reduzindo os custos de produção, além de ser uma destinação adequada ao resíduo de carcinicultura. Palavras-chave: estresse oxidativo, Helianthus annuus L., biofertilizante BRAGA, B. B.; NUNES JUNIOR, F. H.; PAIVA, S. I. O.; BARBOSA, R. M.; PONTES FILHO, R. A.; GONDIM, F. AEFFECTS OF SUPPLEMENTATION WITH WASTE OF SHRIMP FARMING ON SUNFLOWER PLANTS UNDER DROUGHT STRESS CONDITIONS 2 ABSTRACT The aim of this study was to identify the effects of the use of shrimp waste on plant growth and the antioxidative enzymatic defense system of sunflower under drought stress conditions. The experiment was carried out under greenhouse conditions at the Instituto Federal de Educação, Ciência e Tecnologia (Federal Institute of Education, Science and Technology), Maracanaú Campus, Ceará, Brazil. The seeds were sown in plastic pots containing: 1) fine-grained sand; 2) sand + fertilizer; 3) sand + 7g of shrimp waste; 4) sand + 14g shrimp waste. At 16 days after sowing, half of each seedling group described was submitted to irrigation suspension. Two plant harvests were performed: at 19 and 21 days after sowing. The following parameters were determined: shoots, roots and total fresh and dry masses, and activities of antioxidative enzymes in shoots and roots. In general, the use of shrimp waste in the substrate provided higher plant growth. This could be attributed to the increased activity of antioxidative enzymes. Under control conditions, the application of 14g of waste led to higher total dry mass and higher activities of antioxidative enzymes. It is concluded that the shrimp waste may be an alternative to fertilizers, reducing production costs. Moreover, it seems to be an adequate disposal for shrimp farming waste. Keywords: oxidative stress, Helianthus annuus L., biofertilizer
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Peck, Gregory M., Candace N. DeLong, Leon D. Combs y Keith S. Yoder. "Managing Apple Crop Load and Diseases with Bloom Thinning Applications in an Organically Managed ‘Honeycrisp’/‘MM.111’ Orchard". HortScience 52, n.º 3 (marzo de 2017): 377–81. http://dx.doi.org/10.21273/hortsci11412-16.
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Although demand for organic produce continues to increase in the mid-Atlantic, few apple (Malus ×domestica Borkh.) growers in the region have adopted organic management practices due to the considerable disease, insect, and weed pressure, as well as the lack of effective crop load management tools. In this study, lime sulfur (LS) and Regalia® (R) were applied in different sequences (i.e., LS/LS, LS/R, R/R, and R/LS), each in a mixture with JMS Stylet-Oil, to chemically thin apple flowers in an organically managed ‘Honeycrisp’/‘MM.111’ orchard. There was also a nontreated control, a “grower standard” control (LS at 11 mm fruitlet diameter), and a hand-thinned control. The treatments were evaluated for their ability to reduce crop load, as well as to control powdery mildew [Podosphaera leucotricha (Ellis & Everh.) E. S. Salmon], cedar apple rust (Gymnosporangium juniperi-virginiana Schwein.), and quince rust (Gymnosporangium clavipes Cooke & Peck). All treatments reduced crop load compared with the nontreated control, and after the first application of LS or R, the number of fertilized king blooms was reduced and fertilization was prevented in all side blooms. All bloom thinning treatments had more fruit peel russet than the control and russet was more severe when LS was one of the applications. Bloom thinning applications of LS and R did not reduce powdery mildew leaf infection compared with the nontreated control. Cedar apple rust incidence was reduced by all bloom thinning treatments, though some lesions were detected in all treatments. There were minimal quince rust infections in any of the treatments, including the nontreated control. These results suggest that when LS and/or Regalia® are mixed with JMS Stylet-Oil and applied as bloom thinners, they can reduce crop load, and, as a secondary benefit, they can also decrease cedar apple rust incidence from infections that occur during bloom.
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Rahim, Abdul, Ibrahim Ibrahim y Nur Indah Mansyur. "Pemanfaatan sampah rumah tangga berbasis pengelolaan bank sampah di sekolah". J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) 4, n.º 1 (20 de abril de 2020): 37. http://dx.doi.org/10.30734/j-abdipamas.v4i1.881.
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ABSTRACTThis community service activity aims to provide education about household waste utilization through waste banks in schools. The method used in this community service activity is training and mentoring on how to use waste and manage waste through a waste banks. The results of this activity show: (1) increasing students' insights about household waste utilization by composting and liquid fertilizer training; (2) students and schools get experience on waste bank management; (3) through the management of a waste banks, transactions that occur reach Rp.2,231,030 in SMP Negeri 2, and Rp. 138,000 at SDN 08 Tarakan. The evaluation of this activity is based on the number of customers and the value of the transaction. So the model of managing a waste banks in junior high schools can be applied, but it is not recommended for primary schools in Tarakan City. Keyword: Waste, School, waste banks. ABSTRAKKegiatan pengabdian ini bertujuan untuk memberikan edukasi tentang pemanfaatan sampah rumah tangga melalui bank sampah di sekolah. Metode yang digunakan dalam kegiatan pengabdian ini yakni pelatihan dan pendampingan bagaimana pemanfaatan sampah dan pengelolaan sampah melalui bank sampah. Hasil kegiatan ini menunjukkan: (1) meningkatnya wawasan siswa tentang pemanfaatan sampah rumah tangga dengan pelatihan kompos dan pupuk cair; (2) siswa dan pihak sekolah mendapatkan pengalaman tentang pengelolaan bank sampah; (3) melalui pengelolaan bank sampah, transaksi yang terjadi mencapai Rp 2.231.030 di SMP Negeri 2, dan Rp. 138.000 di SDN 08 Tarakan. Evaluasi kegiatan ini berdasarkan jumlah nasabah dan nilai transaksi. Jadi model pengelolaan bank sampah di SMP dapat diterapkan, namun tidak direkomensasikan untuk sekolah dasar di Kota Tarakan. Kata Kunci: Sampah, Sekolah, Bank Sampah.
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Deshpande, Smita N., Ravinder Singh, Triptish Bhatia, Gyan D. Shah, Harpreet Singh, Mary Hawk y Vishwajit L. Nimgaonkar. "Protocol for a Coordinated Approach for Building Capacity of Mental Health Researchers in India". Indian Journal of Psychological Medicine 42, n.º 6_suppl (diciembre de 2020): S5—S14. http://dx.doi.org/10.1177/0253717620969063.
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Introduction: India’s National Mental Health Programme (NMHP) was initiated in 1982. In 2016, the Indian Council of Medical Research (ICMR) organized a Brainstorming Meeting on Prioritization of Mental Health Research. Recognizing the need for improving mental healthcare by building a cadre of mental health researchers based on focus areas of the NMHP, the ICMR organized a research training cum capacity building workshop in collaboration with the Cross-Fertilized Research Training Programme (funded by Fogarty International Centre, NIH, USA) in 2016. The workshop successfully prepared and reviewed 12 single and multicenter research proposals in priority areas of mental health research, which were awarded by the ICMR to middle- and junior-level research faculty and NGO. Methods: A National Coordination Unit (NCU) was set up to mentor investigators and to coordinate, train, and monitor the progress of their projects. Investigators were paired with senior mentors and also participated in four capacity building workshops focusing on proposal-writing, evaluation, and process tracking. Results: Following discussions with ICMR program officers, the NCU formulated standard operating procedures for ethical conduct, data collection, data sharing, progress reporting procedures, and manuscript preparation for all research projects. Regularly scheduled long-distance communications with investigators using social media and group communications were planned. NCU partnered with the ICMR Database Management Unit to build a shared online platform for real-time data entry and storage, and organized two project review meetings where it also coordinated with US faculty to organize public workshops on manuscript writing and qualitative research. Conclusions: The NCU will ensure timely completion of research projects, data entry and analysis, and reports and project publications. It is feasible to evaluate progress with the NMHP through coordinated multisite research that also enables research capacity building. Results from these projects will help in formulating policies by the Ministry of Health Government of India for achieving objectives of the NMHP.
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Macedo Júnior, Eurides Kuster, João Domingos Rodrigues, Roberto Lyra Villas Boas, Rumy Goto y Sheila Zambello de Pinho. "PRODUÇÃO DE PEPINO (Cucumis sativus L.), ENXERTADO E NÃO ENXERTADO, SUBMETIDO À ADUBAÇÃO CONVENCIONAL EM COBERTURA E VIA FERTIRRIGAÇÃO, EM CULTIVO PROTEGIDO". IRRIGA 6, n.º 2 (22 de agosto de 2001): 54–61. http://dx.doi.org/10.15809/irriga.2001v6n2p54-61.
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PRODUÇÃO DE PEPINO (Cucumis sativus L.), ENXERTADO E NÃO ENXERTADO, SUBMETIDO À ADUBAÇÃO CONVENCIONAL EM COBERTURA E VIA FERTIRRIGAÇÃO, EM CULTIVO PROTEGIDO Eurides Küster Macedo JuniorUniversidade Estadual do Oeste do Paraná/Unioeste/Agronomia-Campus de Marechal Cândido Rondon - Fone: 45-254-3216 - E mail:kuster@unioeste.brRua Pernambuco, 1777 - CEP 85960-000 Marechal Cândido Rondon - PRJoão Domingos RodriguesRoberto Lyra Villas BoasRumy GotoSheila Zambello de PinhoUniversidade Estadual Paulista “Júlio de Mesquita Filho”/UNESP-Campus de Botucatu 1 RESUMO Este experimento foi conduzido na Fazenda Experimental São Manuel da Faculdade de Ciências Agronômicas, em ambiente protegido, com início em 23 de janeiro e término em 18 de abril de 1997, com objetivo de avaliar os efeitos e freqüência de adubações nitrogenadas e potássicas, aplicadas em cobertura, via fertirrigação e de forma convencional sobre a produtividade de pepino não enxertado e enxertado. O delineamento experimental foi em blocos casualizados com seis tratamentos e quatro repetições. Avaliou-se à altura de planta, número de folhas, produção, número de fruto, peso de fruto e número de fruto por planta. As plantas de pepino enxertado apresentaram valores superiores para altura de planta, número de folhas, produção, número de fruto, peso de fruto e número de fruto por planta. Nos parâmetros com efeito significativo, percebe-se que a fertirrigação acompanha os maiores valores. UNITERMOS: pepino, enxertia, adubação, fertirrigação MACEDO JUNIOR, E.K., RODRIGUES, J. D., VILLAS BOAS, R. L., GOTO, R. PINHO, S. Z. CUCUMBER YIELD GRAFTED AND NOT GRAFTED SUBMITTED TO FERTIGATION AND CONVENTIONAL FERTIGATION IN GREENHOUSE CONDITIONS 2 ABSTRACT This experiment was conducted at the São Manuel Experimental Station –FCA/UNESP, in greenhouse conditions, beginning on January 23 and ending on April 18. The objective was to evaluate the effects of nitrogen and potassium applied through fertigation and through conventional way on the productivity of grafted and non-grafted cucumber. The experimental design was a randomized block design with six treatments and four replications. Measurements included plant height, number of leaves, production, fruit number, fruit weight, and fruit number per plant. The grafted cucumber plants presented higher values for plant height, number of leaves, production, fruit number, fruit weight and fruit number per plant. For the parameters with statistical significant effects (p<0.05), fertigation yielded the largest values. KEYWORDS: cucumber, graft, fertilizer, fertigation
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Syahrir, S. y Djunarlin Toyang. "INTEGRATED FARM BY MAKING OF "POC-FISH" AS THE ALTERNATIVE FOR ECONOMICAL COASTAL COMMUNITIES INCREASE". Agrotech Journal 2, n.º 2 (30 de noviembre de 2017): 50–53. http://dx.doi.org/10.31327/atj.v2i2.315.
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Coastal communities play an important role in marine and fisheries development, as well as forming a culture in coastal areas. The socio-economic life of coastal communities in Kolakaasi Sub-District of Kolaka District is far from prosperous as the data obtained from Badan Pusat Statistik of Kolaka (2015), the number of poor population in Kolaka reached 27,210 with the percentage of 14.68%. Partners in this IbM activity are teenagers who drop out of school environments and groups of housewives living in coastal areas. The problem of partners in the activities of IbM is the number of teenagers dropping out of school in the partner environment due to the low level of welfare of coastal communities so that the average level of the highest education is junior high school where the young women have to help the family economy by working as laborers in traditional markets of Kolaka or only help parents at home while the men work at sea. Fishing is highly dependence to the nature, so that if the weather is bad then the fishermen cannot gain income. IbM-Integrated Farm by making "POC-FISH" is the manufacture of liquid organic fertilizer that combines agricultural activities with fisheries. POC-FISH is mad of small fish, commonly called lure fish (teri) by Kolaka community. This type of fish is abundant in Kolaka and sold cheaply (R.p 5,000/Kg). The purpose of this IbM activity was the empowerment of coastal communities through the transfer of science and technology by utilizing local potentials so that the partners involved can begin to be productive and economically independent by conducting business on a household scale. The method of making POC - FISH will be carried out simply so that technology transfer can be easily understood by partners. The process of transfer of science and technology was carried out with the pattern of 1) the education of the partner group on the importance of technology adoption by utilizing the potential and local wisdom that will be able to produce a product with higher economic/selling value 2) POC-FISH making training 3) mentoring partner group in marketing 4) monitoring and evaluation. The outgoing plan of this IbM activity is the publication of the ISSN national journal published in 2017 and POC-FISH Products
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Cavalcante, Lourival Ferreira, Francisco Rodolfo Júnior, José Roberto de Sá, Carmen Rosa da Silva Curvelo y Evandro Franklin de Mesquita. "INFLUÊNCIA DA ÁGUA SALINA E MATÉRIA ORGÂNICA NO DESEMPENHO DO MARACUJAZEIRO-AMARELO E NA SALINIDADE DO SUBSTRATO". IRRIGA 12, n.º 4 (6 de diciembre de 2007): 505–18. http://dx.doi.org/10.15809/irriga.2007v12n4p505-518.
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INFLUÊNCIA DA ÁGUA SALINA E MATÉRIA ORGÂNICA NO DESEMPENHO DO MARACUJAZEIRO-AMARELO E NA SALINIDADE DO SUBSTRATO Lourival Ferreira Cavalcante1; Francisco Rodolfo Junior2; José Roberto de Sá3;Carmen Rosa da Silva Curvelo2; Evandro Franklin de Mesquita21Departamento de Solos e Engenharia Rural, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, lofeca@cca.ufpb.br2Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB 3Universidade Federal de Lavras 1 RESUMO No período de agosto de 2001 amarço de 2002, foram avaliados, os efeitos das águas salinas de condutividade elétrica 0,5; 1,5; 2,5 dS m-1 e dos volumes de matéria orgânica: 0, 5, 10 e 15 L adicionados ao material dos primeiros 20 cm de um solo de textura arenosa, sobre o desempenho vegetativo e produtivo do maracujazeiro-amarelo (Passiflora edulis f. flavicarpa Deg) e o acúmulo de sais no substrato. Os tratamentos foram dispostos em blocos casualizados com três repetições e doze plantas por parcela. O plantio foi conduzido em sacos de polietileno com36 cm de diâmetro e60 cm de altura, acondicionando40 L do substrato. O crescimento avaliado pelo diâmetro do caule e número de ramos produtivos não foi influenciado pela salinidade da água e nem pela adição da matéria orgânica. Apesar da água salina e a adição de matéria orgânica interferir positivamente na emissão dos botões florais a produtividade foi muito baixa. A salinidade do substrato aumentou drasticamente com a salinidade das águas de irrigação e, em menor proporção, com o aumento da matéria orgânica adicionada. O maracujazeiro-amarelo foi mais sensível à salinidade na fase de produção que durante o crescimento inicial das plantas. UNITERMOS: salinidade do solo, irrigação, Passiflora edulis f. flavicarpa Deg, sistema de cultivo CAVALCANTE, L. F.; RODOLFO JUNIOR, F.; SÁ, J. R.; CURVELO, C. R.S.; MESQUITA, E. F. INFLUENCE OF SALINE WATER AND ORGANIC MATTER ON YELLOW PASSION FRUIT PLANT BEHAVIOR AND SUBSTRATUM SALINITY 2 ABSTRACT From August/2001 to March/2002, the effects of saline waters were evaluated in Remígio County Paraíba State, Brazil, for electrical conductivity of 0.5; 1.5 and 2.5 dS m-1 organic matter volumes at levels 0, 5, 10 and 15 L incorporated to soil material on the first 20 cm of an Oxysol sandly on vegetative and productive behavior of yellow passion fruit plants (Passiflora edulis f. flavicarpa Deg), and on salts increment in the substratum. The treatments were distributed in randomized blocks using three replications and twelve plants by plot. The planting was not carried out in traditional form of cultivation, but in mineral fertilizer bags with36 cm of diameter and60 cm of height using40 L of the substratum. The plants growth evaluated by stem diameter and emission of productive branches was not influenced by irrigation water salinity nor addition of organic matter to substratum. Although saline water and the organic matter had positive effects on floral buttons emission, they inhibited the productive capacity of plants. The yellow passion fruit plant was more sensitive to salt effects during the production phase than during its initial growth. KEYWORDS: soil salinity, irrigation, Passiflora edulis f. flavicarpa Deg, planting system.
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Ginting, Permata, Syarifuddin Syarifuddin y Fauziyah Harahap. "Analisis Pengetahuan Lingkungan Berbasis Kearifan Lokal pada Pola Pemupukan, Pergiliran Tanaman dan Kebersihan Ladang Masyarakat di Kabupaten Karo dan Kabupaten Deli Serdang". Jurnal Pendidikan Biologi 6, n.º 1 (1 de diciembre de 2016). http://dx.doi.org/10.24114/jpb.v6i1.4324.
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This type of research is ex post facto, the sampling technique used was stratified random sampling. This study aims to determine the level of environmental knowledge based on local wisdom on the pattern of fertilization, crop rotation and cleanliness of public fields in Karo and Deli Serdang. Data was collected using a questionnaire to calculate percentages, looking for differences in normal distribution of data using the formula Kolmogorov-Smirnov (K-S) and also for the homogeneity of the data used by the formula of environmental knowledge Levene. Based on the results of ANOVA test a significant difference to the level of public knowledge (F = 4.41; P = 0.035). The level of knowledge of the agricultural environment in the communities in Karo, 24.91 ± 5.74 (SB) was significantly higher than the level of environmental knowledge of farming communities in Deli Serdang 23.74 ± 6.56. Based on the Anova test results on the data level of knowledge of the agricultural environment in the communities in Karo and Deli Serdang found that the location of agricultural land significant effect on the level of knowledge society. Based on Tukey test results showed that the level of environmental knowledge of peasant farming, 28.42 ± 4.01 was significantly higher than the level of environmental knowledge of primary school students, 18.40 ± 4.46, and the level of environmental knowledge of junior high school students, 22.27 ± 4, 51 but did not differ significantly with the level of environmental knowledge of high school students, 28.47 ± 4.54. Based on the results of Anova test of the influence of a significant interaction between the location of the farm to the knowledge society in Deli Serdang (F = 68.829; P = 0.000), for Karo (F = 28.558; P = 0.000). Based on Tukey test results can be seen that there are differences in the environmental knowledge owned by farmers, high school students, junior high school students, elementary students in Karo and Deli Serdang is significantly different overall. Knowledge society in terms of fertilization, farming communities have chosen manure and compost as a fertilizer major to restore soil fertility, but can not be separated from chemical fertilizers. Chemical fertilizer given to plants to see its development. The community also has been farming in rotation and in the hygiene field, to eradicate the weeds are still using herbicides.