scholarly journals Biometric variables and photosynthetic pigments in tamarind seedlings irrigated with saline water and biofertilizers

2018 ◽  
Vol 39 (5) ◽  
pp. 1909
Author(s):  
Antonio João de Lima Neto ◽  
Lourival Ferreira Cavalcante ◽  
Járisson Cavalcante Nunes ◽  
Antônio Gustavo de Luna Souto ◽  
Francisco Thiago Coelho Bezerra ◽  
...  
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Saline Water ◽  
Block Design ◽  
Chlorophyll Contents ◽  
Biochemical Processes ◽  
Randomized Block Design ◽  
Seedling Biomass ◽  
Input Techniques ◽  
Physiological And Biochemical

Saline level of water or soil beyond the limit tolerated by crops may impair morphological, physiological, and biochemical processes of plants in general, including tamarind. This problem requires the adoption of management and input techniques to reduce the degenerative effects of salts on plant species. In this sense, the aim of this study was to assess the effect of bovine biofertilizers on biometric variables and chlorophyll contents in tamarind seedlings irrigated with saline water. The experiment was conducted from October 2012 to January 2013, in Areia, PB, Brazil, in a randomized block design with four replications and five plants per plot in a 5 × 3 factorial scheme, consisting of electrical conductivity of water of 0.5, 1.5, 3.0, 4.5, and 6.0 dS m?1 and soil without and with common and chemically enriched biofertilizers. Leaf area, shoot dry matter, and contents of chlorophyll a, b, total, and carotenoids were assessed at 100 days after sowing. The increased water salinity reduced leaf area and seedling biomass formation, with a higher intensity in the soil without biofertilizer. The addition of biofertilizers allows the formation of tamarind seedlings irrigated with water of a salinity not tolerated by them when cultivated in the soil without the tested inputs.

scholarly journals Nitrogen and potassium supply and the morphogenic and productive characteristics of marandu palisadegrass

2010 ◽  
Vol 39 (8) ◽  
pp. 1666-1675 ◽  
Author(s):  
Marcio Mahmoud Megda ◽  
Francisco Antonio Monteiro
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
System Development ◽  
Block Design ◽  
Dry Mass ◽  
Dry Matter Production ◽  
Root System Development ◽  
Randomized Block Design ◽  
Matter Production ◽  
Specific Length

The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part dry mass positively correlated with the number of tillers and leaves and grass leaf area. Nitrogen rates modulated the root system development, and the root specific length and surface decreased when high rates of nitrogen and potassium were supllied. Nitrogen and potassium influence Marandu palisadegrass morphogenic characteristics, which are determinant for grass dry matter production.

scholarly journals Morphophysiology of guava under saline water irrigation and nitrogen fertilization

2018 ◽  
Vol 22 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Idelfonso L. Bezerra ◽  
Reginaldo G. Nobre ◽  
Hans R. Gheyi ◽  
Leandro de P. Souza ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Leaf Area ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
N Fertilization ◽  
Water Salinity ◽  
Randomized Block Design ◽  
Irrigation Water Salinity ◽  
N Dose ◽  
Number Of Leaves

ABSTRACT The aim of this study was to evaluate the growth of grafted guava cv. ‘Paluma’ subjected to different concentrations of salts in irrigation water and nitrogen (N) fertilization. The plants were transplanted to 150 L lysimeters and under field conditions at the Science and Agri-food Technology Center of the Federal University of Campina Grande, in the municipality of Pombal - PB. The experiment was conducted in randomized block design in a 5 x 4 factorial scheme, with three replicates, and the treatments corresponded to five levels of electrical conductivity of irrigation water - ECw (0.3; 1.1; 1.9; 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the crop). The doses equivalent to 100% corresponded to 541.1 mg of N dm-3 of soil. Irrigation water salinity above 0.3 dS m-1 negatively affects the number of leaves, leaf area, stem diameter, dry phytomass of leaves, branches and shoots . A significant interaction between irrigation water salinity and N fertilization was observed only for the number of leaves and leaf area at 120 days after transplanting. N dose above 70% of the recommendation (378.7 mg N dm-3 soil) did not mitigate the deleterious effects caused by salt stress on plant growth.

scholarly journals Allometry and morphophysiology of papaya seedlings in a substrate with polymer under irrigation with saline water

2020 ◽  
Vol 11 ◽  
pp. e3339
Author(s):  
EXPEDITO CAVALCANTE NASCIMENTO NETO ◽  
Francisco Thiago Coelho Bezerra ◽  
Marlene Alexandrina Ferreira Bezerra ◽  
Walter Esfrain Pereira ◽  
Lourival Ferreira Cavalcante ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Leaf Area ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Dry Mass ◽  
Area Ratio ◽  
Irrigation Frequency ◽  
Randomized Block Design ◽  
Blade Area

The availability and quality of the irrigation water are among the limitations for the development of agriculture in the semiarid. Aiming at gathering information on these limitations, this work aimed to evaluate the association between a water-absorbing polymer and water salinity in irrigation frequencies, as well as container volumes on the allometric and morphophysiological indices of seedlings of the papaya (Carica papaya) cultivar ‘Sunrise Solo’. The treatments were obtained from the combination between the water-absorbing polymer (0.0; 0.2; 0.6; 1.0, and; 1.2 g dm-3), the electrical conductivity of the irrigation water (0.3; 1.1; 2.7; 4.3, and; 5.0 dS m-1), and irrigation frequencies (daily and alternate), plus two additional treatments (0.75 and 1.30 dm3) to study the effects of the container volume, distributed in a randomized block design. At 55 days after sowing, the following characteristics were evaluated: ratio between stem height and diameter; ratio between shoot and root dry matter; root density; leaf blade area; ratio between total leaf area and root dry mass; specific leaf area; leaf area ratio; leaf mass ratio; and Dickson quality index. The allometric and morphophysiological indices were damaged by the increase of water electrical conductivity and favored by the application of the polymer and a higher irrigation frequency. In the production of papaya seedlings, a daily irrigation frequency must be prioritized, using containers of 0.75 or 1.30 dm-3, water with electrical conductivity up to 2.6 and 1.9 dS m-1 when irrigated daily or in alternate days, respectively, and 0.6 g dm-3 of polymer.

scholarly journals SOLUÇÕES NUTRITIVAS NO DESENVOLVIMENTO DO CRISÂNTEMO CULTIVADO EM VASO

Irriga ◽  
2009 ◽  
Vol 14 (2) ◽  
pp. 205-219 ◽  
Author(s):  
Márkilla Zunete Beckmann-Cavalcante ◽  
Kathia Fernandes Lopes Pivetta ◽  
Ítalo Herbert Lucena Cavalcante ◽  
Lourival Ferreira Cavalcante ◽  
Paulo Affonso Bellingieri
Keyword(s):  
Leaf Area ◽  
Aerial Part ◽  
Dry Matter ◽  
Block Design ◽  
Stem Diameter ◽  
Dendranthema Grandiflora ◽  
Randomized Block Design ◽  
Physiological Indexes ◽  
Number Of Leaves ◽  
Accelerated Growth

SOLUÇÕES NUTRITIVAS NO DESENVOLVIMENTO DO CRISÂNTEMO CULTIVADO EM VASO  Márkilla Zunete Beckmann-Cavalcante1,2; Kathia Fernandes Lopes Pivetta2; Ítalo Herbert Lucena Cavalcante1; Lourival Ferreira Cavalcante3; Paulo Affonso Bellingieri41 Engenharia Agronômica, Campus Profa. Cinobelina Elvas, Universidade Federal do Piauí, Bom Jesus, PI, [email protected] 2 Departamento de Produção Vegetal, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP.3 Departamento de Solos e Engenharia Rural, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB.4 Departamento de Tecnologia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP.  1 RESUMO             Devido às informações sobre a solução nutritiva mais adequada ao cultivo de crisântemo de vaso ainda serem incongruentes, objetivou-se avaliar diferentes soluções nutritivas sobre o desenvolvimento do crisântemo cv. Miramar cultivado em vaso na FCAV-UNESP, Jaboticabal-SP.  O experimento foi conduzido em blocos casualizados com avaliação em parcelas subdivididas no tempo, com os tratamentos correspondentes a quatro diferentes soluções nutritivas compostas de fertilizantes comerciais (S1, S2, S3 e S4) e avaliadas em seis épocas (0, 14, 28, 42, 56  e 70 dias após enraizamento - DAE), com cinco repetições. Foram avaliados a altura de plantas; área foliar; número de folhas; diâmetro de haste; massa seca de parte aérea, raízes e total; número e o diâmetro de inflorescências; e, os índices fisiológicos da análise de crescimento. As soluções nutritivas não interferiram significativamente no diâmetro de haste, número e diâmetro de inflorescências e massa seca de raízes. Entretanto, S3 e S4 promoveram a maior altura de plantas, área foliar, número de folhas, massa seca da parte aérea e total. A partir dos índices fisiológicos, observou-se que as plantas apresentaram um crescimento vegetativo acelerado dos 14 aos 28 DAE, destacando-se as soluções S3 e S4. UNITERMOS: Dendranthema grandiflora Tzvelev., índices fisiológicos, nutrição mineral.  BECKMANN-CAVALCANTE, M. Z.; PIVETTA, K. F. L.; CAVALCANTE, Í. H. L.; CAVALCANTE, L. F.; BELLINGIERI, P. A. NUTRITIVE SOLUTIONS FOR DEVELOPMENT OF POTTED CHRYSANTHEMUM  2 ABSTRACT             Although the information about nutritive solution for potted chrysanthemum is still incongruent, the objective of this work was to evaluate the effect of nutritive solutions in the development ofMiramarchrysanthemum cultivated in pots at FCAV-UNESP, Jaboticabal-SP. The experiment had a randomized block design with split-plot evaluation and treatments corresponding to four nutritive solutions consisting of commercial fertilizers (S1, S2, S3, S4) evaluated at 0, 14, 28, 42, 56 and 70 days after rooting (DAE), with five replications. The plant height, leaf area, number of leaves, stem diameter, total dry matter mass of aerial part and roots; number and diameter of inflorescences, and physiological indexes of growth analysis were evaluated. The nutritive solutions did not interfere significantly in stem diameter, number and diameter of inflorescences and dry matter of roots, although S3 and S4 provided the highest plants, leaf area, number of leaves, total dry matter of aerial part. The physiological indexes showed that plants presented an accelerated growth from 14 to 28 DAE with S4 and S3 solutions and therefore they were considered  the best solutions. KEYWORDS: Dendranthema grandiflora Tzvelev., physiological indexes, mineral nutrition.

scholarly journals Morphological alterations of corn (Zea mays L.) plants in response to aluminum toxicity in the soil

2000 ◽  
Vol 43 (4) ◽  
pp. 415-420 ◽  
Author(s):  
José Roberto Pinto de Souza ◽  
Maria Fátima de Guimarães ◽  
Marcelo Marques Lopes Muller ◽  
Carlos Henrique dos Santos
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Aluminum Toxicity ◽  
Leaf Growth ◽  
Block Design ◽  
Growth Stages ◽  
Morphological Alterations ◽  
Aerial Parts ◽  
Randomized Block Design ◽  
Aluminum Saturation

The objective of the experiment was to identify the morphological alterations in corn genotypes in response to aluminum toxicity in the soil. A complete randomized block design with five replications was used. The a factorial scheme was composed of two corn genotypes (C525M - tolerant, and HS701B - sensitive) and two neutralization levels (0% and 100% of aluminum saturation). The evaluations were performed at six leaf and 10-11 leaf growth stages, emergence of the "stigma-style", and the physiological maturity. The presence of toxic aluminum didn’t significantly reduce diameter and height of stem, leaf area, dry matter of aerial parts, total dry matter and yield. Stem diameter, leaf area, dry matter of root, dry matter of aerial parts, total dry matter and yield did not allow the separation of genotypes in relation to aluminum toxicity in the soil.

scholarly journals Perubahan karakter biokimia dan fisiologi tanaman kacang hijau pada berbagai kondisi cekaman kekeringan

Kultivasi ◽  
2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Purwanto Purwanto ◽  
Bambang Rudianto Wijonarko ◽  
Tarjoko Tarjoko
Keyword(s):  
Soil Moisture ◽  
Drought Stress ◽  
Leaf Area ◽  
Block Design ◽  
Field Capacity ◽  
Dry Weight ◽  
Biochemical Responses ◽  
Randomized Block Design ◽  
Physiological And Biochemical ◽  
Screen House

Sari. Penelitian ini bertujuan untuk mengkaji respons fisiologi dan biokimia tanaman kacang hijau terhadap cekaman kekeringan. Penelitian dilaksanakan di Screen House Exfarm Fakultas Pertanian Universitas Jenderal Soedirman Purwokerto dari bulan Maret sampai dengan Oktober 2018. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan pola faktorial 3 x 3. Faktor pertama yang dicoba adalah tingkat kelengasan tanah, yakni kadar air kapasitas lapang sebagai kontrol, 75% kapasitas lapang, dan 50% kapasitas lapang. Faktor kedua adalah varietas unggul kacang hijau yang terdiri dari Varietas Vima 2, varietas Vima 3, dan Varietas Kutilang. Hasil penelitian menunjukkan bahwa cekaman kekeringan sampai 50 persen kapasitas lapang sudah menunjukkan penurunan pada karakter luas daun dan bobot kering tanaman, tetapi belum berpengaruh terhadap kadar prolin tanaman kacang hijau. Kata Kunci: Kacang hijau, cekaman kekeringan, varietas, biokimia, fisiologis Abstract. This study aims to examine the physiological and biochemical responses of mungbean plants to drought stress. The research was conducted at the Screen House Exfarm, Faculty of Agriculture, Jenderal Soedirman University, Purwokerto, from March to October 2018. Experiment used Randomized Block Design with factorial treatment. The first factor was the level of soil moisture, consisted of level of 100% field capacity as control, 75% field capacity, and 50% field capacity. The second factor was the superior varieties of mungbeans, consisted of Vima 2, Vima 3, and Kutilang varieties. The results showed that drought stress up to 50 percent of field capacity had shown a decrease in the character of leaf area and dry weight of plants, but it had not affected the prolin content of mungbean plants. Keywords: Mungbean, drought stress, variety, biochemistry, physiology

scholarly journals Growth of three color hybrids of sweet paprika under greenhouse conditions

2015 ◽  
Vol 33 (2) ◽  
pp. 139-146
Author(s):  
Fernando Peña B. ◽  
Ingeborg Zenner de Polanía
Keyword(s):  
Leaf Area ◽  
Growth And Development ◽  
Dry Matter ◽  
Block Design ◽  
Human Diet ◽  
Area Index ◽  
Biometric Parameters ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Basic Studies

The color varieties of sweet paprika are conquering the Colombian vegetables markets, not only because of their fancy colors, but also because they are one of the best sources of ascorbic acid and carotenoids as well as phenolic compounds, important in the human diet. Therefore, basic studies related to the growth and development of the available imported varieties under greenhouse conditions on the Bogota Plateau are required.In a completely randomized block design with five replicates, biometric parameters of the hybrids Plinio, Menta RZ and Orangery were evaluated, showing that the latter one was statistically different for leaf area, leaf area index and number of leaves during the 20 study weeks, while the dry matter in the leaves, stems and roots showed no differences between the varieties. Although, 'Orangery' exhibited the highest percent of final allocation of accumulated dry matter in the fruits, being, in general, the most promising hybrid for cultivation under the research conditions.

scholarly journals Adaptive Responses of Paspalum oteroi Native Grass to Fertilization and Shading

2020 ◽  
Vol 8 (3) ◽  
pp. 871
Author(s):  
Alex Coene Fleitas ◽  
Luísa Melville Paiva ◽  
Sandra Aparecida Santos ◽  
Henrique Jorge Fernandes ◽  
Redney Gomes Brevilieri ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Dry Matter ◽  
Block Design ◽  
Adaptive Responses ◽  
Native Grass ◽  
Area Index ◽  
Foliar Fertilizer ◽  
Randomized Block Design ◽  
Matter Production

The aim of this study was to evaluate the Paspalum oteroi native grass and its adaptive responses to shading and foliar fertilization in two pasture systems in the Cerrado-Pantanal transition region. A completely randomized block design with factorial arrangement was adopted to this study: three types of fertilizers [no fertilization – control (C); Foliar fertilizer for pasture (FF) and Soil fertilizer + Foliar fertilizer (SF)] x two pasture systems (WS - with shading, wooded P. oteroi pasture; NS - no shading, exclusive P. oteroi pasture) with four repetitions. P. oteroi seedlings were transplanted in November 2015. Data collection was from May 2016 to September 2016, during dry season. There were differences (p<0.05) in the sward height variables (H), dry matter (DM), crude protein (CP) content, dry matter production (DMP) and shoot: root ratio (S:R). In the WS system increased of 8,61% of the CP content and fertilizer SF increased of 8.81% of the CP content. However, in the WS system was observed reduced DM, DMP and S:R and in the FF and SF fertilizers increased leaf area index (LAI), in the latter months of the application. Probably, P. oteroi grass developed adaptation strategies to deal with the environmental conditions to which it was submitted during this study, such as variations in its morphophysiological traits: low shoot / root ratio, height, chemical composition, leaf area index e light interception. In conclusion, P. oteroi showed adaptation to wooded pasture systems, during dry period, however, the use of fertilization depends on economic viability studies.

scholarly journals Response of Arucula Cultivars to Saline Nutritive Solution Enriched With Potassium Nitrate

2018 ◽  
Vol 10 (11) ◽  
pp. 269
Author(s):  
Francisco de Assis de Oliveira ◽  
José de Souza Leite Neto ◽  
Mychelle Karla Teixeira de Oliveira ◽  
Luan Alves Lima ◽  
Luan Vitor Nascimento ◽  
...  
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Saline Water ◽  
Block Design ◽  
Maximum Yield ◽  
Potassium Nitrate ◽  
Yield Potential ◽  
Fresh Matter ◽  
Hydroponic System ◽  
Nutritive Solution

The quality of water used to prepare a nutritive solution is a fundamental factor for plants to express their maximum yield potential, however, due to an emerging water scarcity, the use of saline water is turning into a challenge for producers and scientists. The present study was developed to evaluate the effect of potassium nitrate in two arucula cultivars fertigated with saline nutritive solutions in semi-hydroponic system. It was used a randomized block design, in factorial scheme 2 &times; 4, with two arucula cultivars (Cultivada and Folha Larga) and four nutritive solutions [S1-standard nutritive solution; S2-standard nutritive solution + NaCl (7.5 dS m-1); S3-S2 + 50% of KNO3; S4-100% of KNO3], with three replicates, with each experimental unit represented by a gutter of 1.5 m filled with coconut-fiber based substrate and 30 plants per replicate. Plants were collected 40 days after planting and evaluated for following variables: height, amount of leaves, leaf area, above ground fresh matter, above ground dry matter, leaf succulence, percentage of dry matter, and specific leaf area. Cultivada is more productive than Folha Larga, but presented higher sensibility to salinity. Increase of salinity in the water for preparation of nutritive solution negatively affects arucula cultivars&rsquo; development in semi-hydroponic system. The use of potassium nitrate reduced the effects of salinity on the Folha Larga&rsquo;s development, but did not inhibit negative effects of salinity in any cultivar. Growth of arucula, Folha Larga, using saline water in semi-hydroponic system is feasible with addition of 50% of KNO3.

scholarly journals Influence of leaf area reduction on clonal production of eucalyptus seedlings

CERNE ◽  
2010 ◽  
Vol 16 (3) ◽  
pp. 251-257 ◽  
Author(s):  
Reynaldo Campos Santana ◽  
Tiago Reis Dutra ◽  
José Pereira Carvalho Neto ◽  
Gilciano Saraiva Nogueira ◽  
Paulo Henrique Grazziotti ◽  
...  
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Block Design ◽  
Seedling Production ◽  
Root Collar Diameter ◽  
Area Reduction ◽  
Randomized Block Design ◽  
Collar Diameter ◽  
Leaf Area Reduction ◽  
Root Collar

Clonal production of eucalyptus seedlings has made considerable progress in recent years. Significant developments have taken place in irrigation and fertilization systems as well as in management of clonal miniorchards. However, the proportion of leaf area in stem minicuttings remains almost the same as that used in macrocutting systems. This work aimed to evaluate the effect of leaf area reduction on seedling production of eight eucalyptus clones. The experiment was conducted over a period of 105 days using a randomized block design and three replicates in an 8 x 4 factorial arrangement, with eight clones and four leaf reduction levels (0%, 25%, 50% and 75%). Variables evaluated included height, root collar diameter, shoot and root dry matter and relationships between these variables. Experimental results demonstrated that clones behaved differently as to leaf reduction and that the 0% reduction level can be adopted in most clones being evaluated.

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