Use of mulches and their effects on the radish crop

ABSTRACT This work aimed to evaluate the influence of green fertilization and the compost on the production of radish, cv. ‘Cometa’. The experimental design was randomized blocks with 6 treatments and 4 replicates: T1 - Leucaena, T2 - ‘Madeira-nova’, T3 - Compost (maize straw and composted cattle manure), T4 – ‘Sempre verde’ grass + compost and T5 – ‘Sempre verde’ grass and T6 - control without fertilization, totaling 24 experimental plots. The total area of the experimental plot was 1.44 m2, with useful area of 0.80 m2 and 21.0 t ha-1 of fertilizer (dry basis) were incorporated in each treatment. The radish crop was directly sown in the beds, in 2- to 3-cm-deep holes, leaving one plant at spacing of 20 cm between rows and 5 cm between plants. Twenty-nine days after planting, plants were evaluated for total yield, commercial yield, percentages of commercial roots (%) and waste roots (%), fresh and dry matter of shoots and roots, total and individual leaf area and the SPAD index. The incorporation of Leucaena at the amount of 21.0 t ha-1 (dry basis) promoted the highest increments for the analyzed characteristics.

Download Full-text

Dormancy breaking in seeds of different accessions of Luffa cylindrica Roemer

Comunicata Scientiae ◽

10.14295/cs.v9i4.1497 ◽

2019 ◽

Vol 9 (4) ◽

pp. 596-602

Author(s):

Francisca Sonally Oliveira ◽

Lindomar Maria da Silveira ◽

Salvador Barros Torres ◽

Ferdinando Monteiro Carvalho Dias da Costa ◽

Maclayver Christiano Caetano Nunes ◽

...

Keyword(s):

Experimental Design ◽

Central America ◽

Dry Matter ◽

Commercial Production ◽

Expanded Polystyrene ◽

Index Number ◽

Experimental Plot ◽

Dormancy Breaking ◽

Luffa Cylindrica ◽

Emergence Percentage

Luffa cylindrica Roemer is abundant in countries of Asia, Central America and South America. Dormancy in luffa seeds is caused by the impermeability of the coat, which may be a major obstacle in the commercial production of seedlings for the cultivation of this species. Thus, this study aimed to evaluate different methods to break dormancy in different accessions of luffa. The experimental design was completely randomized, in a 6 (accessions) x 5 (dormancy breaking treatments) factorial arrangement, with four replicates. Seeds were planted on expanded polystyrene trays, containing commercial substrate Plantmax®. The analyzed variables were: emergence percentage; emergence speed index; number of true leaves; plant height; stem diameter; root length; shoot fresh and dry matter, and root dry matter. The first two variables were analyzed in the entire experimental plot and the others only in the evaluated area of the plot. Scarification with sandpaper nº 80 and cut with pruning pliers on the opposite end to the hilum were the methods of dormancy breaking which led to the best results. Due to the variability of the results among the accessions, it was not possible to recommend one method of dormancy breaking for luffa seeds that is generalized for all of them.

Download Full-text

Nutrition and yield of ‘Gigante’ cactus pear cultivated with different spacings and organic fertilizer

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n12p1083-1088 ◽

2016 ◽

Vol 20 (12) ◽

pp. 1083-1088 ◽

Cited By ~ 6

Author(s):

Paulo E. R. Donato ◽

Sérgio L. R. Donato ◽

João A. Silva ◽

Aureliano J. V. Pires ◽

Raul C. C. Rosa ◽

...

Keyword(s):

Experimental Design ◽

Dry Matter ◽

Organic Fertilizer ◽

Cattle Manure ◽

Dry Matter Production ◽

Cactus Pear ◽

Matter Production

ABSTRACT The objective of this study was to evaluate the levels of macronutrients in cladodes and yield of cactus pear, cv. ‘Gigante’, cultivated with different cattle manure doses and plant spacings. The experimental design was randomized blocks in 4 x 3 factorial, with three replicates. The treatments consisted of the combination of four doses of cattle manure (0, 30, 60 and 90 Mg ha-1 year-1) with three spacings (1.00 x 0.50, 2.00 x 0.25 and 3.00 x 1.00 x 0.25 m). The contents of macronutrients and dry matter production of cladodes were assessed 600 days after planting. The plant spacings influenced the contents of nitrogen, potassium, calcium and sulfur in the cladodes of ‘Gigante’ cactus pear and there was interaction between spacing and manure dose for magnesium contents. The increment in cattle manure doses increases the contents of phosphorus, nitrogen, potassium and sulfur in the cladodes. The maximum dry matter production of cladodes is estimated at 21.8 Mg ha-1 year-1 at a dose of 71.8 Mg ha-1 year-1 of manure.

Download Full-text

Desenvolvimento e qualidade do azevém no sub-bosque de angico-vermelho em sistema silvipastoril

Comunicata Scientiae ◽

10.14295/cs.v6i4.1079 ◽

2015 ◽

Vol 6 (4) ◽

pp. 437 ◽

Cited By ~ 5

Author(s):

Janine Pilau ◽

Elvis Felipe Elli ◽

Maicon Nardino ◽

Cleiton Korcelski ◽

Denise Schmidt ◽

...

Keyword(s):

Experimental Design ◽

Solar Radiation ◽

Protein Content ◽

Leaf Area ◽

Dry Matter ◽

Total Protein Content ◽

Harvest Time ◽

Silvopastoral System ◽

Time Of Harvest

The aim of this study was to evaluate the development and quality of ryegrass in an understorey of angico-vermelho in a silvopastoral system. The experimental design was a complete randomized block, with a 2x6 factorial, being two systems of production (full sunlight and silvopastoral) and six times of harvest (15, 30, 45, 60, 75 and 90 days after ryegrass emergence), with three replications. The interception of the photosynthetically active solar radiation, average air temperature, dry matter, leaf area and protein content were evaluated. According to the analysis of variance, the interaction between production system and time of harvest resulted in significant differences for dry matter and the protein content and leaf area resulted in differences only according to the harvest time. The development of ryegrass is influenced by shading, when grown in this study conditions. The shade provided by angico-vermelho reduces the amount of ryegrass dry matter of ryegrass, but this reduction does not limit the use of the specie to compose a silvopastoral system. The total protein content and leaf area of ryegrass are not influenced by the light restriction.

Download Full-text

Performance of carrot genotypes at two Jequitinhonha Valley sites

Semina Ciências Agrárias ◽

10.5433/1679-0359.2015v36n6supl2p4059 ◽

2015 ◽

Vol 36 (6Supl2) ◽

pp. 4059

Author(s):

Gustavo Antônio Mendes Pereira ◽

Maxwel Coura Oliveira ◽

Altino Júnior Mendes Oliveira ◽

José Sebastião Cunha Fernandes ◽

Valter Carvalho de Andrade Júnior ◽

...

Keyword(s):

Dry Matter ◽

Block Design ◽

Total Yield ◽

Soil Conditions ◽

Root Yield ◽

Shoot Height ◽

Climate Conditions ◽

Randomized Complete Block Design ◽

Commercial Yield ◽

The Town

<p>The successful commercial use of carrot depends on the choice of cultivars that are well-adapted to soil and climate conditions at the cultivation site and on good consumer acceptance. The objective of this study was to evaluate the performance of carrot cultivars grown in autumn-winter in two towns with different climatic characteristics, in the High Jequitinhonha Valley, MG, Brazil. The experiments were conducted on the Rio Manso farm, in the town of Couto de Magalhães de Minas and on Campus JK at UFVJM, in the town of Diamantina, Minas Gerais, Brazil. Six carrot cultivars (Brasília, Nantes, Kuronan, Esplanada, Planalto and Tornado) were evaluated using a randomized complete block design with three replicates. The following morpho-agronomic characteristics were evaluated 100 days after sowing: shoot height, root length, root dry matter, total dry matter, harvest index, commercial yield and total yield root. The most suitable cultivars in Diamantina were Planalto, Tornado and Kuronan, and the cultivatar Planalto was the best suited to Couto de Magalhães de Minas. The agronomic performance of the cultivars was higher in Couto de Magalhães de Minas for the majority of the study variables, resulting in a higher total yield and commercial root yield. The climatic and soil conditions of Diamantina induced flowering in most cultivars, causing a loss to the commercial yield in autumn-winter cultivation.</p>

Download Full-text

Nitrogen and Potassium Concentrations in the Nutrients Solution for Melon Plants Growing in Coconut Fiber without Drainage

The Scientific World JOURNAL ◽

10.1155/2013/546594 ◽

2013 ◽

Vol 2013 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Luiz Augusto Gratieri ◽

Arthur Bernardes Cecílio Filho ◽

José Carlos Barbosa ◽

Luiz Carlos Pavani

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Leaf Area ◽

Crop Yield ◽

Minas Gerais ◽

Experimental Plot ◽

Coconut Fiber ◽

N Concentration ◽

Minas Gerais State

With the objective of evaluating the effects of N and K concentrations for melon plants, an experiment was carried out from July 1, 2011 to January 3, 2012 in Muzambinho city, Minas Gerais State, Brazil. The “Bonus no. 2” was cultivated at the spacing of 1.1 × 0.4. The experimental design was a randomized complete block with three replications in a 4 × 4 factorial scheme with four N concentrations (8, 12, 16, and 20 mmol L−1) and four K concentrations (4, 6, 8, and 10 mmol L−1). The experimental plot constituted of eight plants. It was observed that the leaf levels of N and K, of N-NO3and of K, and the electrical conductivity (CE) of the substrate increased with the increment of N and K in the nutrients' solution. Substratum pH, in general, was reduced with increments in N concentration and increased with increasing K concentrations in the nutrients' solution. Leaf area increased with increments in N concentration in the nutrients solution. Fertigation with solutions stronger in N (20 mmol L−1) and K (10 mmol L−1) resulted in higher masses for the first (968 g) and the second (951 g) fruits and crop yield (4,425 gm−2).

Download Full-text

Performance of carrot genotypes at two Jequitinhonha Valley sites

Semina Ciências Agrárias ◽

10.5433/1679-0359.2015v36n6sup2p4059 ◽

2015 ◽

Vol 36 (6Supl2) ◽

pp. 4059

Author(s):

Gustavo Antônio Mendes Pereira ◽

Maxwel Coura Oliveira ◽

Altino Júnior Mendes Oliveira ◽

José Sebastião Cunha Fernandes ◽

Valter Carvalho de Andrade Júnior ◽

...

Keyword(s):

Dry Matter ◽

Block Design ◽

Total Yield ◽

Soil Conditions ◽

Root Yield ◽

Shoot Height ◽

Climate Conditions ◽

Randomized Complete Block Design ◽

Commercial Yield ◽

The Town

The successful commercial use of carrot depends on the choice of cultivars that are well-adapted to soil and climate conditions at the cultivation site and on good consumer acceptance. The objective of this study was to evaluate the performance of carrot cultivars grown in autumn-winter in two towns with different climatic characteristics, in the High Jequitinhonha Valley, MG, Brazil. The experiments were conducted on the Rio Manso farm, in the town of Couto de Magalhães de Minas and on Campus JK at UFVJM, in the town of Diamantina, Minas Gerais, Brazil. Six carrot cultivars (Brasília, Nantes, Kuronan, Esplanada, Planalto and Tornado) were evaluated using a randomized complete block design with three replicates. The following morpho-agronomic characteristics were evaluated 100 days after sowing: shoot height, root length, root dry matter, total dry matter, harvest index, commercial yield and total yield root. The most suitable cultivars in Diamantina were Planalto, Tornado and Kuronan, and the cultivatar Planalto was the best suited to Couto de Magalhães de Minas. The agronomic performance of the cultivars was higher in Couto de Magalhães de Minas for the majority of the study variables, resulting in a higher total yield and commercial root yield. The climatic and soil conditions of Diamantina induced flowering in most cultivars, causing a loss to the commercial yield in autumn-winter cultivation.

Download Full-text

RESPONSE OF EGGPLANT PLANTS TO BIOSTIMULATORES AND SHADING

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v47i4.522 ◽

2016 ◽

Vol 47 (4) ◽

Author(s):

Abu-Alaees & AL-Baity

Keyword(s):

Leaf Area ◽

Surface Area ◽

Dry Matter ◽

Total Yield ◽

Fruit Weight ◽

Fresh Weight ◽

Main Root ◽

Secondary Root ◽

Chlorophyll Pigment ◽

Significant Difference

A field experiment was carried out in the vegetable field of Horticulture Department and Landscape Gardening, College of Agriculture, Abu-Ghraib In the spring season 2014 to study the Response of Eggplant Plants to Biostimulators and Shading, to study of Two factors, the first factor represent two treatments, first is shading with plastic nets (50% light) and the second without shading, each of these treatments contained three replicates and distributed randomly Treatments were(Without adding, Endospor Dry Mix, Biohealth, Amino Alexin, interacion between Endospor Dry Mix and Biohealth interaction between Endospor Dry Mix and Amino Alexin interaction between Biohealth and Amino Alexin triple interaction between Endospor Dry Mix and Biohealth and Amino Alexin and symbolized by (Control, A, B, O, AB, AO, BO and ABO). The experiment carried out within (Nested Design), the Results and analyzed compared with the averages according to less significant difference test ( LSD) at the probability level of 5%.The results can be summarized by. The treatment A gave a significantly higher values in the leaf area are (1299 dm2.plant-1) and the length of the secondary root is (35.08 mm) the roots surface area is (1300 cm2) and total yield is (92.10 ton.ha-1) while the treatment BO give a significantly higher values in the number of fruitful branches are (12.83 fruitful branch.plant-1) and the diameter of the main root is (4.93 mm). And the treatment AO give a significantly higher values in the concentration of total chlorophyll pigment in the leaves (543.5 mg.100g-1 fresh weight). And the treatment ABO give a significantly higher values in the fruit weight is (177.3 g) and the concentration of Fe in the leaves (255.2 mg.kg-1 dry matter) and Zn (83.50 mg.kg-1 dry matter) and Mg (0.186 mg.kg-1 dry matter). The shading treatment a significantly higher values in the concentration of Fe in the leaves (237.0 mg.kg-1 dry matter) and Zn (71.67 mg.kg-1 dry matter). The number of fruit branches are (10.83 fruitful branch.plant-1) and the leaf area are (1353 dm2.plant-1), and the concentration of chlorophyll pigment in the leaves is (493.6 mg.100g-1 fresh weight) and the diameter of the main root way (4.29 mm) and the length of secondary root is (31.58cm) and the surface area of the roots is (1190 cm) and the weight of the fruit is (169.6 g) and the total yield is (76.05 ton.ha-1).The interaction between treatment A and shading significantly in the number of fruitful branches is (15 fruitful branch.plant-1) and the length of secondary root (39.33 cm) and the total yield is (98.03 ton.ha-1). And the superiority of interaction between the treatment AO and the shading significantly in the leaf area in were (1645 dm2.plant-1) and the concentration of chlorophyll pigment in the leaves way (575.0 mg.100 g-1 fresh weight). While the interaction between the treatment BO and shading in the surface area of the roots way (1336 cm2). And the interaction between the treatment ABO and shading give a significantly value in the fruit weight is (184.6 g) and the concentration of Fe in the leaves (261.0 mg.kg-1 dry matter), and Zn (86.00 mg.kg-1 dry matter) And the interaction between the treatment BO and without shading gave a significantly value in diameter main root way (5.37 mm).

Download Full-text

Agronomic performance of sweet potato with different potassium fertilization rates

Horticultura Brasileira ◽

10.1590/s0102-053620160421 ◽

2016 ◽

Vol 34 (4) ◽

pp. 588-592 ◽

Cited By ~ 3

Author(s):

Arthur B Cecílio Filho ◽

Sandra MC Nascimento ◽

Alexsandra SN Silva ◽

Pablo F Vargas

Keyword(s):

Sweet Potato ◽

Mineral Nutrition ◽

Dry Matter ◽

Animal Feed ◽

Total Yield ◽

Potassium Fertilizer ◽

K Value ◽

Economic Production ◽

Commercial Yield ◽

Low K

ABSTRACT Sweet potato is a vegetable with great potential due to its versatility of use, which covers human food, animal feed and biofuels. However, it is still little studied, especially regarding mineral nutrition and potassium. Thus, a study was conducted to evaluate potassium fertilizer doses (0, 30, 60, 90, 120 and 150 kg/ha K2O) on mineral nutrition and yield of 'Beauregard' sweet potato in a typic Hapludult soil with low K level (0.3 mmolc/dm3). The experimental design was of randomized blocks with four repetitions. Harvest took place 123 days after seedling transplanting. Foliar K content, shoot, root and total dry matter, root total yield, root commercial yield, K accumulation, K content in the soil and K optimal economic dose were assessed. The highest foliar K content was observed at the dose of 100 kg/ha K2O, with K value of 44.6 g/kg on leaf dry matter. In soils with low K availability, the highest yield (38 t/ha) was observed at the dose of 87 kg/ha K2O. Maximum commercial yield (24.3 t/ha) was obtained at the dose of 85 kg/ha K2O, and K accumulation of 150 kg/ha in the shoot and 57 kg/ha in the root, respectively, were observed (72.5 and 27.5%). Optimal economic production was of 71 kg/ha K2O, which corresponds to 83% of the dose that maximized commercial production.

Download Full-text

Responses of basil cultivars to irrigation water salinity

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v21n1p44-49 ◽

2017 ◽

Vol 21 (1) ◽

pp. 44-49 ◽

Cited By ~ 4

Author(s):

Sandra S. S. Maia ◽

Ricardo C. P. da Silva ◽

Francisco de A. de Oliveira ◽

Otaciana M. dos P. da Silva ◽

Ana C. da Silva ◽

...

Keyword(s):

Experimental Design ◽

Leaf Area ◽

Irrigation Water ◽

Dry Matter ◽

Water Salinity ◽

Irrigation Water Salinity ◽

Stems And Leaves ◽

Four Levels ◽

Number Of Stems ◽

Semi Arid

ABSTRACT The objective of this work was to verify the response of basil cultivars to the salinity of irrigation water during the period from January 15 to March 20, 2013, in a greenhouse, at the Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil. The experimental design was completely randomized, with treatments arranged in 2 x 4 factorial scheme, constituted of two cultivars of basil (‘Verde’ and ‘Roxo’) and four levels of irrigation water salinity (0.5; 2.0; 3.5 and 5.0 dS m-1), with four replicates. The plants were collected at 65 days after transplanting and the following variables were evaluated: stem diameter; plant height; number of stems and leaves; leaf area; dry matter of leaves, stems, roots, and total dry matter. The increase in salinity was detrimental to all variables evaluated in both cultivars, but the cultivar ‘Roxo’ proved to be more tolerant than the cultivar ‘Verde’. Both cultivars are tolerant to irrigation water salinity of up to 1.5 dS m-1.

Download Full-text

Growth of young Tabebuia aurea seedlings under irrigation with wastewater from fish farming

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n6p519-524 ◽

2016 ◽

Vol 20 (6) ◽

pp. 519-524 ◽

Cited By ~ 2

Author(s):

José R. de S. Pinto ◽

Rômulo M. O. de Freitas ◽

Tiago de S. Leite ◽

Francisco de A. de Oliveira ◽

Hugo Ferreira ◽

...

Keyword(s):

Leaf Area ◽

Plant Height ◽

Quality Index ◽

Dry Matter ◽

Fish Farming ◽

Diameter Ratio ◽

Stem Diameter ◽

Individual Leaf ◽

Experiment Individual ◽

Dickson Quality Index

ABSTRACT This study aimed to evaluate the growth of young Tabebuia aurea seedlings irrigated with different concentrations of wastewater from fish farming. The experiment was conducted in a seedling nursery, from June to August 2013. The treatments consisted of five concentrations of wastewater from fish farming diluted in freshwater (0, 25, 50, 75 and 100% of wastewater). Plant height, stem diameter and plant height/stem diameter ratio were evaluated every 15 days to verify the effects of treatments on seedlings growth. At the end of the experiment, individual leaf area, leaf area, leaf dry matter, stem dry matter, root dry matter, total dry matter and Dickson quality index were also evaluated. The reuse of wastewater from fish farming diluted at concentrations of 25 and 50% in freshwater is a viable alternative in the production of Tabebuia aurea seedlings. However, higher concentrations hinder the production of seedlings of this species.

Download Full-text