scholarly journals Reuse of treated domestic sewage for biquinho pepper cultivation

2021 ◽  
Vol 53 (1) ◽  
pp. 176-181
Author(s):  
Raimundo Rodrigues Gomes Filho ◽  
Simone De Oliveira Feitosa ◽  
Clayton Moura de Carvalho ◽  
Gregorio Guirado Faccioli ◽  
Tatiana Pacheco Nunes ◽  
...  
Keyword(s):  
Higher Plants ◽  
Block Design ◽  
Domestic Sewage ◽  
Meteorological Station ◽  
Capsicum Chinense ◽  
Crop Evapotranspiration ◽  
Pepper Fruit ◽  
Crop Development ◽  
Quality Water ◽  
Sewage Reuse

This study aimed to evaluate the reuse of treated domestic sewage in biquinho pepper (Capsicum chinense L.) cultivation under different irrigation regimes. The experiment was carried out in a greenhouse, in a randomised block design with a 3 x 4 factorial scheme, with four replications. Forty-eight pepper plants were subjected to three treated domestic sewage concentrations (0, 50, and 100%) and four irrigation depths (75, 100, 125, and 150% of the crop evapotranspiration - ETc). Data for ETc estimation were obtained from an automatic meteorological station, which was installed in the greenhouse. The results showed that irrigation depths corresponding to 125 and 150% of the ETc at a concentration of 100% treated domestic sewage resulted in higher plants. Moreover, longer fruits were obtained when plants were subjected to 100% ETc at 100% treated domestic sewage. The studied irrigation depths influenced pepper fruit total weight and yield. No treated domestic sewage concentrations significantly influenced the variables analysed. Treated domestic sewage reuse can constitute an alternative for quality water saving and for chemical fertilisation of biquinho pepper crop. Highlights: The growing of beak pepper with domestic sewage treated can bring benefits in terms of providing nutrients to the crops; Adequate levels of water replacement with domestic sewage treated may promote good crop development. The use of treated domestic sewage can be an alternative to reduce the use of better quality water and chemical fertilization in the growing of beak pepper. Reduction of environmental impact may be possible with the replacement of chemical fertilizer by domestic sewage treated in the growing of beak pepper.

scholarly journals Production and economic viability of banana managed with cover crops

2016 ◽  
Vol 20 (12) ◽  
pp. 1078-1082
Author(s):  
Francisca E. L. Barbosa ◽  
Claudivan F. de Lacerda ◽  
Aiala V. Amorim ◽  
Raimundo N. T. Costa ◽  
José A. da Silva ◽  
...  
Keyword(s):  
Cover Crops ◽  
Block Design ◽  
N Fertilization ◽  
Economic Viability ◽  
Crop Evapotranspiration ◽  
Pueraria Phaseoloides ◽  
Banana Production ◽  
Conventional Management ◽  
Randomized Block Design ◽  
Production Cycles

ABSTRACT This research aimed to evaluate the yield and economic viability of three crop cycles of the banana cv. ‘Prata Anã’ in association with perennial herbaceous legumes, natural vegetation, or compared with the conventional management. The research was conducted using a complete randomized block design with split-split plots and four replicates. The plots were formed by four irrigation depths: 50, 75, 100 and 125% of crop evapotranspiration, and the subplots by cover crops (Calopogonium muconoides, Pueraria phaseoloides, and natural cover without N addition) or no cover crops with addition of N fertilization (conventional management). The subsubplots were formed by the second, third and fourth banana production cycles. Yield and economic viability of the cultivation were estimated for a period of seven years. The conventional management promoted greater yield and economic viability in the cultivation of ‘Prata Anã’ banana, due to the N fertilization. Managements with leguminous cover crops were also economically viable, but they should be investigated in combination with N fertilization and compared with the conventional method.

scholarly journals Ametoctradin: a new fungicide for potato late blight control

2016 ◽  
Vol 83 (0) ◽  
Author(s):  
Jesus Guerino Töfoli ◽  
Ricardo José Domingues ◽  
Walter Jacobelis Jr. ◽  
Marina Pacheco Lombardi Tortolo
Keyword(s):  
Late Blight ◽  
Block Design ◽  
Potato Late Blight ◽  
Significant Control ◽  
Progress Curve ◽  
Randomized Block Design ◽  
Commercial Potato ◽  
Crop Development ◽  
Potato Crops ◽  
Application Volume

ABSTRACT: Late blight (Phytophthora infestans ) is among the most important and destructive diseases in potato cultivation. Aiming to evaluate the efficacy of the new fungicide ametoctradin, mixed with dimethomorph and metiram, an experiment was carried out in commercial potato crops (Ágata cultivar) in Pilar do Sul, São Paulo state, Brazil, during the growing season in 2013. A randomized block design was used, with 4 replications, on plots of 15 m2. Applications were carried out using a backpack sprayer with a spray-bar under 3 bar of constant pressure. The application volume varied from 300 L to 600 L.ha-1 based on crop development. The variables evaluated were leaf severity (0 to 100%), area under the disease progress curve, and yield. Ametoctradin + dimethomorph (1.25 L.ha-1) provided significant control of late blight, exceeding benthiavalicarb + fluazinam, dimethomorph + metiram, dimethomorph + pyraclostrobin, cymoxanil + mancozeb, metalaxyl-M + mancozeb, ametoctradin + metiram, and pyraclostrobin + metiram, although similar to ametoctradin + dimethomorph (1.00 L.ha-1), fluopicolide + propamocarb, and fenamidone + propamocarb. Ametoctradin + metiram resulted in moderate control, which was always similar to the standard. Ametoctradin and its associations represent a new alternative for the management of potato late blight.

scholarly journals Least limiting water range in Oxisols under different levels of machine traffic

2018 ◽  
Vol 8 (2) ◽  
pp. 337-346
Author(s):  
Karina De Vares Rossetti ◽  
José Frederico Centurion
Keyword(s):  
Bulk Density ◽  
Block Design ◽  
Corn Yield ◽  
Soil Penetration Resistance ◽  
Corn Crop ◽  
Randomized Block Design ◽  
Crop Development ◽  
Least Limiting Water Range ◽  
Different Levels

This work aimed, to evaluate the structural behavior of Oxisols based on the least limiting water range (LLWR) and establish relations with corn crop. The experiment was carried out in a randomized block design with five treatments and four replications. Soil samples collected at the layer of 0-0.20 m depth in a Haplustox (LVd) and an Eutrustox (LVef) were used. The compaction treatments consisted of T0= no additional compaction; T1 and T2= two and four passes with a 4 t tractor, respectively; T3 and T4 = two and four passes with a 10 t tractor, respectively. The range of LLWR variation in the LVd was the lowest one and varied from 0.01 to 0.04 m3 m-3, whereas in the LVef varied from 0.03 to 0.13 m3 m-3 for the critical soil penetration resistance (PRc) of 2 MPa. It was observed that critical bulk density (BDc) values were 1.76 and 1.40 Mg m-3 in the LVd and the LVef, respectively. The highest frequency of bulk density (BC ≥ BDc) occurred from the T1 to T4 (LVd) and from the T2 to T4, however, a reduction in corn yield was not observed. The determination of the LLWR was efficient and complementary for identifying more favorable or more impeditive conditions to compaction in the LVef for the corn crop development in relation to the LVd.

scholarly journals Irrigation of arugula cultivars in the region of Zona da Mata Mineira

2019 ◽  
Vol 40 (3) ◽  
pp. 1101
Author(s):  
Caio César Silva Alvarenga Correia ◽  
Fernando França da Cunha ◽  
Everardo Chartuni Mantovani ◽  
Derly Jose Henriques Silva ◽  
Santos Henrique Brant Dias ◽  
...  
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Field Capacity ◽  
Minas Gerais ◽  
Crop Evapotranspiration ◽  
Randomized Complete Block Design ◽  
Plant Water Potential ◽  
Irrigation Depth ◽  
Use Efficiency ◽  
Shoot Mass

The region of the Zona da Mata of Minas Gerais stands out in the production of vegetables. To achieve the success in this activity, it is important to choose suitable cultivars and apply irrigation correctly. This study aimed to determine the optimum irrigation depth and evaluate new commercial arugula cultivars in the Zona da Mata of Minas Gerais. The cultivation was carried out in a greenhouse during three cycles with periods of 33 (January 11, 2016 to February 12, 2016), 36 (March 1, 2016 to April 5, 2016), and 36 (April 12, 2016 to May 17, 2016) days. The experimental design was a randomized complete block design with five replications, five irrigation depths (50, 75, 100, 125, and 150% of the crop evapotranspiration-ETc) in the plots, and three arugula cultivars (Antonella, Cultivada, and Folha Larga) in the subplots. A drip irrigation system was used. The parameters evaluated were root depth, root fresh mass, plant water potential, leaf temperature, number of commercial leaves, total number of plants, fresh shoot mass, and water use efficiency. Arugula cultivars did not present differences in their agronomic characteristics. An irrigation depth of the 50% ETc is recommended if the soil moisture is under the field capacity at the beginning of the arugula cycle.

scholarly journals Initial growth and tolerance of melon cultivars under salt stress

2016 ◽  
Vol 11 (2) ◽  
pp. 462
Author(s):  
Erbia Bressia Gonçalves Araujo ◽  
Francisco Vanies da Silva Sá ◽  
Fernanda Andrade de Oliveira ◽  
Lauter Silva Souto ◽  
Emanoela Pereira de Paiva ◽  
...  
Keyword(s):  
Saline Water ◽  
Block Design ◽  
Salt Content ◽  
Poor Quality ◽  
Tolerance Index ◽  
Initial Growth ◽  
Randomized Block Design ◽  
Initial Stage ◽  
Quality Water ◽  
Poor Quality Water

The melon crop is normally developed in semiarid regions, where water resources are limited. This scarcity of water is a strong stressor on the crops, and requires the supplementation of existing water supplies with poor quality water, especially saline water. This can impede the growth and production of plants; however, the use of tolerant genotypes may minimize this problem. Thus, a greenhouse experiment was developed at the Federal University of Campina Grande - UFCG, Pombal Campus, Paraiba State, Brazil, in order to study the emergence, initial growth, and tolerance of melon cultivars irrigated with waters of different salt content. We studied three melon cultivars (Gaúcho Redondo, Gaúcho Casca de Carvalho and Halles Best Jumbo) irrigated with five levels of saline water (0.6; 1.2; 1.8; 2.4; and 3.0 dS m-1), arranged in a 3 x 5 factorial scheme, with the treatments distributed in a randomized block design with four replications. The plants seeds were monitored for 30 days after sowing, and at 30 days the growth and salinity tolerance index was evaluated. Cultivar Halles Best Jumbo was the most tolerant to saline water during initial stage of growth, while the Gaucho Redondo was more sensitive to salinity. It was found that saline waters up to 1.8 dS m-1 were suitable for irrigation of melon plants round Gaucho and waters up to 2.4 dS m-1 could be used for irrigation of Gaucho Casca de Carvalho and Halles Best Jumbo crops during the initial growth phase.

scholarly journals Performance of processing tomatoes under different supply levels of crop evapotranspiration

2018 ◽  
Vol 36 (3) ◽  
pp. 299-305
Author(s):  
Cícero J Silva ◽  
Nadson C Pontes ◽  
Adelmo Golynski ◽  
Marcos B Braga ◽  
Alice M Quezado-Duval ◽  
...  
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Water Productivity ◽  
Irrigation Management ◽  
Crop Evapotranspiration ◽  
Production Chain ◽  
Crop Cycle ◽  
Growing Conditions ◽  
Irrigation Levels

ABSTRACT Irrigation management is essential to promote appropriate plant growth and guarantee production and quality of the tomatoes for processing, increases the efficiency of nutrients use and contributes to ensure the sustainability of the production chain. This study was installed to evaluate productive performance of two processing tomato hybrids submitted to five water depths under drip irrigation system. Five levels of crop evapotranspiration (ETc) replacement (60%, 100%, 140%, 180% and 220%) and two tomato hybrids (BRS Sena and H 9992) were tested. The experimental design was a 5×2 factorial arranged in randomized complete block design with four replications. During the crop cycle, hybrids BRS Sena and H 9992 needed 692.20 and 418.43 mm of water, yielding 80 and 44.06 t ha-1, respectively. For both hybrids, the higher water productivity was observed when lower levels of irrigation were applied. Higher productivities and pulp yields of ‘BRS Sena’ and ‘H 9992’ were noticed when replacing 150-166% and 99-101% ETc, respectively. We observed that improving the performance of processing hybrid tomatoes is possible by adjusting irrigation levels for each hybrid according to growing conditions.

scholarly journals Nutrient support via fertigation with domestic effluent and growth of cotton

2020 ◽  
Vol 41 (4) ◽  
pp. 1135
Author(s):  
Francisco Gonçalo Filho ◽  
Miguel Ferreira Neto ◽  
Cleyton dos Santos Fernandes ◽  
Francisco Vanies da Silva Sá ◽  
Nildo da Silva Dias ◽  
...  
Keyword(s):  
Block Design ◽  
Wastewater Reuse ◽  
Arid Environment ◽  
Domestic Sewage ◽  
Randomized Block Design ◽  
Cotton Plants ◽  
Phosphate Fertilization ◽  
Semi Arid Region ◽  
Domestic Effluent ◽  
Semi Arid

Because of climatic problems in the Brazilian semi-arid region, it is of fundamental importance to seek a culture that considers water scarcity and available natural resources. Thus, a randomized block design, with subdivided plots and six replications, was carried out in the experimental area of the treatment and wastewater reuse station of the Milagres Settlement, Apodi, Brazil, with the objective of evaluating cultivation of herbaceous cotton (Gossipyum hirsutum) fertigated with domestic sewage treated in a semi-arid environment. Two cultivation cycles were carried out, and the cotton plants were fed with three different solutions containing treated domestic sewage (TDE) plus supply water (PSW), to supply the crop evapotranspiration (ETc) (100% PSW – control, 50% PSW + 50% TDE and 100% TDE), with and without phosphate fertilization in pre-planting. The contribution of nutrients to the soil and plant growth were analyzed. The results indicated that the wastewater presents potential fertilizer, reaching to the soil amounts of some nutrients exceeding the cotton’s needs, when 100% of the ETc was supplied via fertigation with domestic effluent, resulting in an increase in the growth rates of the plants. There was no interaction between the percentages of wastewater and phosphate fertilization in pre-planting. Phosphorus alone promoted significant variation only in the first cycle, indicating that there is a residual fertigation effect with domestic effluent on the nutrient supply.

scholarly journals Tomato yield as a function of water depths and irrigation suspension periods

2019 ◽  
Vol 23 (8) ◽  
pp. 591-597 ◽  
Author(s):  
Cícero J. da Silva ◽  
José A. Frizzone ◽  
César A. da Silva ◽  
Adelmo Golynski ◽  
Luiz F. M. da Silva ◽  
...  
Keyword(s):  
Water Deficit ◽  
Block Design ◽  
Water Productivity ◽  
Irrigation Management ◽  
Total Yield ◽  
Crop Evapotranspiration ◽  
Industrial Processing ◽  
Tomato Yield ◽  
Subsurface Drip ◽  
Water Depths

ABSTRACT Irrigation management is essential for tomato fruits yield and quality. Therefore, the aim of this study was to evaluate the yield of tomatoes for industrial processing, ‘BRS Sena’ hybrid, subjected to water depths and irrigation suspension periods before harvest, irrigated by subsurface drip irrigation, in Goiás, Brazil (17º 49’ 19.5” S and 49º 12’ 11.3” W), in 2015 and 2016. The experiments were conducted under a randomized complete block design, with four replications, in split plots. Five irrigation levels (50, 75, 100, 125 and 150% of crop evapotranspiration) were evaluated in the plots and five irrigation suspension periods (0, 7, 14, 21 and 28 days before harvest) were evaluated in the subplots. At 125 days after transplanting the seedlings, the yields of green, mature, rotten fruits and total yield, water productivity and percentages of green, mature and rotten fruits were evaluated. The highest total fruit yields (105.86 and 58.60 t ha-1) were obtained with water replacements ranging from 125.47 (615.09 mm) to 132.11 (564.00 mm) of crop evapotranspiration, in the first and second year of experiment, respectively. Growing plants under water deficit and excess increased the incidence of rotten fruits and decreased that of mature fruits. Pre-harvest irrigation suspension reduced crop yield and incidence of green fruits and increased the incidence of rotten fruits. The highest water productivity by the crop occurred under water deficit, management that may be interesting for regions with water restrictions.

Water reuse and zero liquid discharge: a sustainable water resource solution

2003 ◽  
Vol 3 (4) ◽  
pp. 97-103 ◽  
Author(s):  
B. Durham ◽  
M. Mierzejewski
Keyword(s):  
Water Reuse ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Operating Experience ◽  
Water Shortage ◽  
Pilot Studies ◽  
Liquid Discharge ◽  
Quality Water ◽  
Zero Discharge ◽  
Sewage Reuse

Increased water demand from population and economic growth, environmental needs, change in rainfall, flood contamination of good quality water and over abstraction of groundwater are all factors that will continue to create water shortage problems. This paper considers alternative solutions, which conform to sustainable solution premises whilst being economically beneficial to the community. The importance of pilot studies is reviewed and the surprises they can uncover. Case studies describe the benefits of long-term operating experience of zero discharge systems reusing the wastewater produced by car manufacture and secondary sewage reuse for a large coal fired power plant. Applications of reuse on large islands such as Hawaii and desert communities are discussed including the production of cash crops with high efficiency irrigation systems by reusing brackish municipal wastewater. Large municipal zero discharge potable water production is also described with an economic comparison of the alternatives.

scholarly journals Performance of ginger crop under different irrigation depths

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Caroline Merlo Meneghelli ◽  
Marcelo Rodrigo Krause ◽  
Juniomar Schmidt ◽  
João Nacir Colombo ◽  
Gustavo Haddad Souza Vieira
Keyword(s):  
Water Supply ◽  
Block Design ◽  
Experimental Unit ◽  
Crop Evapotranspiration ◽  
Total Water ◽  
Average Mass ◽  
Randomized Block Design ◽  
Use Efficiency ◽  
Export Quality ◽  
Santa Maria

In order to achieve good yields and profitability from ginger crops, the water supply must be adequate. However, there are few studies available which have evaluated the adequate water supply to this vegetable. The objective of this study was to evaluate the effect of different irrigation depths on the development and productivity of ginger plants. The research was conducted at the "Sítio Schmidt" farm located in the municipality of Santa Maria de Jetibá, in the central mountainous region of Espírito Santo State, Brazil. The experimental design was a randomized block design with four replications, each experimental unit consisting of three rows at a spacing of 0.90 m and 0.10 m between plants of two meters extension, totaling 20 experimental units. The treatments consisted of application of five irrigation depths equivalent to: 50%, 75%, 100%, 125% and 150% of crop evapotranspiration (ETc). We evaluated the number of sprouts; average mass of export quality rhizome; the production of export, small and total rhizomes (t ha-1); and water use efficiency. The total water depth applied in the range 1100–1200 mm per cycle favors the development of ginger plants, providing the highest yields of total and export rhizomes, the greatest average mass of export quality rhizome and lowest production of small rhizomes.

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