scholarly journals Production and Nutrient Accumulation of Common Bean Cultivars under Competition with Weed

2019 ◽  
Vol 37 ◽  
Author(s):  
C.G. COELHO ◽  
L.P. DALVI ◽  
L.S.G. OLIVEIRA ◽  
F.L. OLIVEIRA
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Chlorophyll Content ◽  
Nutritional Quality ◽  
Initial Growth ◽  
Nutrient Accumulation ◽  
Randomized Design ◽  
Crop Cycle ◽  
Bean Yield ◽  
Completely Randomized Design

ABSTRACT: Improper management of weeds is one of the causes of low bean yield, as it is very susceptible to interference due to their slow initial growth. This study aimed to evaluate the influence of dayflower on grain yield and nutrient accumulation of bean cultivars. The experiment was carried out in a screened house, in 5 L pots, in a 2 x 4 factorial scheme. Factor 1 corresponded to the presence or absence of weeds, and factor 2 bean cultivars: BRS Pontal, BRS Agreste, BRS Ametista and BRS Estilo. The experiment was arranged in a completely randomized design with five replications. The coexistence of bean and weed was maintained throughout the crop cycle. Chlorophyll content, number of pods per plant, number of grains per plant, nutrients contents (N - nitrogen, P - phosphorus, K - potassium, Ca - calcium, Mg - magnesium, Mn - manganese, Fe - iron and Zn - zinc) in grains were evaluated. Competition with weeds negatively influenced chlorophyll content, number of pods, yield and N content in grains. The interaction was significant to P, Mg and Fe contents in grains, demonstrating that competition with weeds may impair allocation of these nutrients, resulting in grains of inferior nutritional quality. The cultivar BRS Agreste was more efficient to accumulate P and Mg in grains in competition with dayflower.

scholarly journals Economically optimal water depth and grain yield of common bean subjected to different irrigation depths

2018 ◽  
Vol 22 (7) ◽  
pp. 482-487 ◽  
Author(s):  
Chaiane G. da Conceição ◽  
Adroaldo D. Robaina ◽  
Marcia X. Peiter ◽  
Ana R. C. Parizi ◽  
João A. da Conceição ◽  
...  
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Technical Efficiency ◽  
Water Depth ◽  
Critical Periods ◽  
Crop Evapotranspiration ◽  
Randomized Design ◽  
The Common ◽  
Completely Randomized Design ◽  
Bean Crop

ABSTRACT Common bean crop plays an important role in the world, not only in economic aspects but also in social development. The objective of this study was to evaluate the grain yield and the economically optimal water depth which reflects the maximum technical efficiency of the common bean crop. The experiment was conducted in greenhouse, in Alegrete - RS, from February to May 2016. A completely randomized design was used, consisting of five water replacement treatments (25, 50, 75, 100 and 125% crop evapotranspiration - ETc) and four replicates. Based on the obtained results, both water deficit and water excess directly affected the final grain yield of the crop. Maximum grain yield was 3,554.1 kg ha-1, obtained by applying 492.72 mm (100% ETc). On the other hand, the economically optimal water depth was estimated at 91.2% ETc, indicating that water depths above this value are not suitable for maximum technical efficiency in the common bean crop under these conditions. It was concluded that the water depth equivalent to 100% ETc maximizes grain yield for the region of Alegrete-RS, and irrigation is considered a solution in the water supply to the common bean crop during critical periods.

scholarly journals Morphological and Agronomic Characteristics of Common Beans Subjected to Seed Priming With Different Doses of N6-benzyladenine

2019 ◽  
Vol 11 (7) ◽  
pp. 178
Author(s):  
Ricardo A. Silva ◽  
Sylvana N. Matsumoto ◽  
Ramon C. Vasconcelos ◽  
Franklin D. Carvalho ◽  
Luan S. Oiveira ◽  
...  
Keyword(s):  
Common Bean ◽  
Seed Priming ◽  
Leaf Nitrogen ◽  
Agricultural Practice ◽  
Common Beans ◽  
Randomized Design ◽  
Bean Yield ◽  
Completely Randomized Design ◽  
Pod Number ◽  
Different Doses

In field conditions, the more usual application of cytokinins is based mainly on seed treatment and foliar spraying. Nowadays, seed priming with plant growth regulators is a successful agricultural practice due to its easy application in annual crops, resulting in a higher vigor and production. In order to evaluate the effect of the treatment of common bean seeds with N6-benzyladenine (6-BA), in the morphophysiology and crop yield, an experiment was carried out in a greenhouse, in a completely randomized design with four replicates and five doses of 6-BA (0, 0.0375, 0.075, 0.1125 and 0.15 g kg-1 of seed). The growth regulator was applied to the seeds in order to cover their entire surface. At 30 days after emergence, the physiological parameters were increased as a function of the doses of 6-BA. On the other hand, at 30 and 45 days after emergence of the crop, there was a drastic reduction in nodulation with increased 6-BA doses, which resulted in the lower accumulation of leaf nitrogen, pod number, and common bean yield. The ranging doses till 0.15 g kg-1 of seed of the cytokinin 6-BA are not recommended in seed priming of common beans. However, the effective recommendation of cytokinin as a seed priming is still not determined, and studies about products and doses must be improved before recommendation.

scholarly journals Physiological and agronomic characteristics of the common bean as affected by multifunctional microorganisms

2021 ◽  
Vol 42 (2) ◽  
pp. 599-618
Author(s):  
Cássia Cristina Rezende ◽  
◽  
Laylla Luanna de Mello Frasca ◽  
Mariana Aguiar Silva ◽  
Rafael Augusto Corrêa Pires ◽  
...  
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Yield Components ◽  
Fungal Isolate ◽  
Beneficial Effects ◽  
Randomized Design ◽  
Bean Plants ◽  
The Common ◽  
Completely Randomized Design ◽  
Common Bean Plants

Multifunctional microorganisms (MMs) can have beneficial effects on plants through direct and indirect mechanisms. This study aimed to determine the effect of MMs on shoot and root biomass production; gas exchange; content of macronutrients in the shoots, roots and grains; yield components; and grain yield of common bean plants. A completely randomized design with twenty-six treatments and three replications was used under controlled conditions. Treatments consisted of the application of MMs and their combinations in pairs, with the nine rhizobacteria isolates BRM 32109, BRM 32110 and 1301 (Bacillus sp.), BRM 32111 and BRM 32112 (Pseudomonas sp.), BRM 32113 (Burkholderia sp.), BRM 32114 (Serratia sp.), 1381 (Azospirillum sp.) and Ab-V5 (Azospirillum brasilense); an edaphic fungal isolate T-26 (Trichoderma koningiopsis); and a control (without MMs). These MMs were applied at three time points: microbiolization of the seeds, watering the soil seven days after sowing (DAS) and spraying the plants with 21 DAS. In comparison to the control plants, the isolates 1301 and T-26, in addition to the combinations Ab-V5 + T-26, BRM 32114 + BRM 32110 and 1381 + T-26, provided better results, with an increase of 36.5% in the grain yield, a higher accumulation of biomass (78.0%) and a higher content of N, P and K (42.6, 67.8 and 25.7%, respectively) in the shoots of common bean plants. Therefore, the results allow us to infer that the use of MMs is a good strategy for increasing common bean grain yields.

scholarly journals Effects of 1-MCP on External Postharvest Qualities and Shelf Life of ‘Maha Chanok’ Mango Fruit

2015 ◽  
Vol 8 (1) ◽  
pp. 68
Author(s):  
B. Chutichudet ◽  
Prasit Chutichudet ◽  
Usana Trainoak
Keyword(s):  
Chlorophyll Content ◽  
Fruit Weight ◽  
Storage Life ◽  
Fruit Firmness ◽  
Mango Fruit ◽  
Chlorophyll Contents ◽  
Randomized Design ◽  
Fruit Decay ◽  
Completely Randomized Design ◽  
And Storage

<p>‘Maha Chanok’<strong> </strong>mango is an economic fruit crop widely cultivated commercially throughout Thailand. By nature, mango fruit has a rather limited storage life after harvest. 1-methylcyclopropene (1-MCP) has been accepted as a commercial substance to improve several fruit qualities. The objective of this research was to study the effects of 1-MCP on the external postharvest qualities and storage life on the ‘Maha Chanok’ mango fruit. The experiment was laid out in a Completely Randomized Design with three replicates, ten fruits per replicate. Mango fruit was fumigated with 1-MCP at three concentrations (1000, 1250, or 1500 nl l<sup>-1</sup>) and three fumigation periods (12, 18, or 24 h), compared with the control fruit. After treating, all treatments were stored under ambient temperature (27 °C, 80%R.H.). The following determinations were made every two days for assessment of fruit weight loss, firmness, chlorophyll content, decay incidence, and storage life. The results showed that fruit treated with 1500 nl l<sup>-1</sup><strong> </strong>1-MCP for 24 h had the maximal fruit firmness. For chlorophyll content, the results showed that fruit-treated with 1500 nl l<sup>-1</sup><strong> </strong>1-MCP for 12 h could effectively retain the highest chlorophyll contents. Furthermore, both the lowest fruit decay and the longest storage life of 12 days were achieved from the fruit treated with 1000 nl l<sup>-1</sup><strong> </strong>1-MCP for 12 h.</p>

scholarly journals Efficiency of portable chlorophyll meters in assessing the nutritional status of wheat plants

2015 ◽  
Vol 19 (12) ◽  
pp. 1148-1151 ◽  
Author(s):  
Alessana F. Schlichting ◽  
Edna M. Bonfim-Silva ◽  
Matheus de C. Silva ◽  
William Pietro-Souza ◽  
Tonny J. A. da Silva ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Chlorophyll Content ◽  
Direct Determination ◽  
Probability Level ◽  
Indirect Determination ◽  
N Concentration ◽  
Randomized Design ◽  
Chlorophyll Index ◽  
Completely Randomized Design

ABSTRACT The objective of this study was to verify the efficiency of two portable chlorophyll meters (Minolta SPAD® 502 and Falker ClorofiLOG® 1030) in assessing the nutritional status of wheat plants, correlating the indices from the devices and the direct determination of chlorophyll content with the concentration of nitrogen (N) in the plant. The experiment was conducted in a greenhouse, in pots with 5 dm3 of Oxisol, in a completely randomized design, with six N doses (0, 80, 160, 240, 320 and 400 mg dm-3) and five replicates. At 47 days after emergence, the readings of SPAD and Falker indices and the quantification of chlorophyll content and N concentration in wheat plants were performed, as well as analysis of variance and correlation test, both at 0.05 probability level. The chlorophyll meters Minolta SPAD® 502 and Falker ClorofiLOG® 1030 do not differ with respect to the indirect determination of chlorophyll in wheat plants. The Falker chlorophyll index was statistically equal to the chlorophyll content. Indirect chlorophyll indices and chlorophyll content showed a high correlation with the N concentration in the plant.

Effect of Potting Mixture on Growth of Commiphora wightii (Arn.) Bhandari Through Semi-Hardwood Cuttings

2017 ◽  
Vol 24 (4) ◽  
pp. 239-242
Author(s):  
A. Sure ◽  
S. Khachane ◽  
A. Nimkar
Keyword(s):  
Medicinal Plant ◽  
Chlorophyll Content ◽  
Low Cost ◽  
Commiphora Wightii ◽  
Experimental Trial ◽  
Planting Material ◽  
Randomized Design ◽  
Endangered Medicinal Plant ◽  
Number Of Leaves ◽  
Completely Randomized Design

An experimental trial was conducted to find out the effective potting mixture and low cost quality planting material through semi-hardwood cuttings propagation of endangered medicinal plant Commiphora wightii (Arn.) Bhandari. The experiment was carried out in CRD (Completely Randomized Design) with six treatments, three replications and 20 cuttings per treatment. Growth in cutting was measured by eleven parameters. Parameter such as sprouting percentage (88.67%), rooting percentage (83.45%), minimum days for sprouting (9.82), number of sprouts (7.17), length of shoot (15.25cm), diameter of shoot (3.950mm), number of leaves (24.83), chlorophyll content a, b and total (7.6290, 5.7083 and 13.3374 mg/100g, respectively) was significantly superior under potting mixture S+S+V (soil+sand+vermicompost). Furthermore rooting parameter such as number of roots (7.51), length of root (14.60cm), diameter of root (1.338mm) was found higher in media containing S+S+C (soil+sand+cocopeat).

scholarly journals Plastochron and yield of Physalis peruviana L. grown in different environments and transplanting dates

2020 ◽  
Vol 41 (4) ◽  
pp. 1151
Author(s):  
André Ricardo Zeist ◽  
Juliano Tadeu Vilela de Resende ◽  
Daniel Suek Zanin ◽  
Israel Felipe Lustosa da Silva ◽  
Daniel Fernandes da Silva ◽  
...  
Keyword(s):  
Leaf Area ◽  
Growth And Development ◽  
Temperature Data ◽  
Node Number ◽  
Physalis Peruviana ◽  
Yield And Quality ◽  
Randomized Design ◽  
Crop Cycle ◽  
Completely Randomized Design ◽  
Reproductive Phases

This study aimed to estimate plastochron, leaf area, and yield of Physalis peruviana seedlings grown in different environments and transplanted on different dates. The experiment was carried out in a completely randomized design, arranged in a 2 x 3 factorial scheme, namely: two cultivation environments (protected and field) and three transplanting dates (10/27/2013, 12/15/2013, and 02/11/2014). Four replicates of eight plants were used per plot, and the four central plants composed the useful area. Based on mathematical models and temperature data, plastochron was estimated for the entire crop cycle and vegetative and reproductive phases separately. Leaf area and node number were measured, and their relationship established at the end of the study. Other variables assessed were fruit number, mass, and yield per plant. Our results showed that the higher temperatures in the protected environment anticipated phenological timings. Plastochron values of 60.0 and 16.5 °C day-1 can be used during vegetative and reproductive stages, respectively. The protected environment increased vegetative growth and development, as well as yield of P. peruviana seedlings. In the Guarapuava-PR region, P. peruviana seedlings should be transplanted during the spring so that higher fruit yield and quality could be achieved.

scholarly journals Trichoderma Contributes to the Germination and Seedling Development of Açaí Palm

Agriculture ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 456
Author(s):  
Bruno Fróes Campos ◽  
Anselmo Junior Corrêa Araújo ◽  
Cristina Aledi Felsemburgh ◽  
Thiago Almeida Vieira ◽  
Denise Castro Lustosa
Keyword(s):  
Dry Mass ◽  
Initial Growth ◽  
Randomized Design ◽  
Trichoderma Isolate ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Completely Randomized Design ◽  
Set Up ◽  
Root Size ◽  
Trichoderma Isolates

The application of Trichoderma fungus can be used to obtain seedlings of higher quality for plantations. The objective of this study was to evaluate the effects of Trichoderma isolates on the germination and initial growth of açaí seedlings. Two trials were set up. In the laboratory, the seeds were inoculated in suspensions prepared with each of the isolates for 24 h, and they were arranged in trays containing filter paper in a completely randomized design with five replicates containing 50 seeds each. For the control, the seeds were submerged only in water. Part of the seedlings resulting from seeds treated and not treated with Trichoderma were transferred to bags containing forest soil and were submitted to seven modes of application of Trichoderma and kept in a nursery. The speed of germination and hypocotyl were not influenced by the biological treatment. The application of the different Trichoderma isolates positively influenced the height, collar diameter, number of leaves, root size, leaf area and root, and aerial part dry mass of the açaí seedlings. The application of the Trichoderma isolate TAM01 on the preplanting substrate and biweekly applications on the postplanting substrate was the combination that most positively influenced the development of açai seedlings.

scholarly journals PIGEON PEA INITIAL GROWTH UNDER DIFFERENT CONCENTRATIONS OF ALUMINUM AND COMMERCIAL SUBSTRATE

2020 ◽  
Vol 7 (4) ◽  
pp. 1-6
Author(s):  
Gustavo Araújo Rodrigues ◽  
Breno De Jesus Pereira ◽  
Anacleto Ranulfo dos Santos ◽  
Francielle Medeiros Costa ◽  
Gilvanda Leão dos Anjos
Keyword(s):  
Dry Matter ◽  
Arid Regions ◽  
Aluminum Toxicity ◽  
Pigeon Pea ◽  
Organic Substrate ◽  
Initial Growth ◽  
Root Volume ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Substrate Concentrations

The incorporation of organic substrate into the soil can reduce aluminum toxicity in pigeon pea (Cajanus cajan (L.) Millsp.) plants, making it a viable alternative for use by small farmers in acidic soil regions such as the northeast semi-arid regions of Brazil that contain toxic aluminum in the soil. The aim of this study was to evaluate the effect of increasing aluminum doses and different commercial substrate concentrations on the initial growth of the pigeon pea. The experiment was undertaken in a greenhouse using a completely randomized design with a 5 × 3 factorial scheme. The first factor consisted of five doses of aluminum (0, 13.5, 27, 54, and 108 mg L-1) and the second factor consisted of three percentages of commercial substrate Vivato Slim Pro® (0%, 10%, and 20%), with five replicates per treatment, totaling 60 experimental units. The variables evaluated were plant height; total chlorophyll; shoot, root, and total dry matter; and root volume. The use of the commercial substrate attenuated the aluminum toxicity and favored the initial growth of pigeon pea plants, regardless of the concentration used. Thus, the aluminum was detrimental to the initial plant growth at all tested concentrations and showed more pronounced signs of toxicity on the root volume.

scholarly journals Growing levels of goat biofertilizer in the initial growth of the pepper

2020 ◽  
Vol 12 (3) ◽  
pp. 63-71
Author(s):  
Davy Frazão Lima ◽  
Antonio Caio de Jesus ◽  
Diego De Almeida Veras ◽  
Ramón Yuri Ferreira Pereira ◽  
Dário De Sousa Ramos ◽  
...  
Keyword(s):  
Data Collection ◽  
Growth And Development ◽  
Pepper Plant ◽  
Initial Growth ◽  
Capsicum Frutescens ◽  
Initial Development ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Goat Manure ◽  
Chili Peppers

Biofertilizers have been used in agroecological production with the aim of improving conditions for plant development. The objective of the research was to evaluate the effect of the application of biofertilizer on the initial development of chili peppers (Capsicum frutescens L.). The experiment was installed and conducted under field conditions from October to December 2018, in Chapadinha, city located in Maranhão. A completely randomized design was used, with 4 treatments and 5 repetitions. The experiment corresponded to the application of biofertilizer in concentrations T1: 0%, T2: 20%, T3: 40%, T4: 60% of goat biofertilizer diluted in water. The goat biofertilizer was made using 25 kg of fresh goat manure, 200 g of ash and 500 g of brazilian candy called rapadura. Seedlings with eight definitive leaves were transplanted 0.8 x 1 m apart. The first application of the biofertilizer was performed 15 days after transplanting and the following applications of the biofertilizer were carried out at 10-day intervals until data collection. At 60 days after transplantation, data for each variable were collected. It was observed that the variables responded well to the biofertilizer, revealing significant increases in the growth and development of the pepper plant. It is recommended 4 (four) applications of doses of goat biofertilizer with a concentration between 46% (460 ml L-1) to 48% (480 ml L-1) to obtain pepper seedlings with good phytotechnical quality, because in this range the best results were found for most of the analyzed variables.

Sign in / Sign up

Export Citation Format

Share Document