scholarly journals Vegetative growth and yield of tomato (Lycopersicum esculentum Mill.) in response to the systemic insecticide phorate

1998 ◽  
Vol 27 (3) ◽  
pp. 443-449 ◽  
Author(s):  
Raul N. C. Guedes ◽  
Nelsa M. P. Guedes ◽  
Marcelo Picanço

The effect of the systemic insecticide phorate on vegetative growth and yield of tomato (Lycopersicum esculentum Mill.) was studied in the greenhouse. Three dosages of phorate (1.5, 7.5, and 13.5 mg a.i./ 1.5 L pot) were applied along with a control (without insecticide application). The plants were harvested at 17, 32, 51, 69, and 90 days after tilling. Regression analysis did not show any significant effect of insecticide dosages in plant and root length. However, an overall negative effect of phorate was observed on leaf area, shoot and root dry weights, and fruit fresh weight. Based on multiple regression models, maximum leaf area was obtained with 6.7 mg a.i./pot and maximum shoot and root dry weights were obtained with no insecticide application and 0.1 mg a.i./pot, respectively. Higher fruit fresh weights were also obtained without phorate application. Dosages of phorate close to the lower range recommended for pest control in tomatoes (1 kg a.i./ha) favored the increase in leaf area in tomato plants, but this increase did not cause higher yields. Phorate was slight detrimental to shoot and root growth, what led to a smaller yield in the phorate treated plants.

2016 ◽  
Vol 47 (4) ◽  
Author(s):  
Sadik & et al.

This study was conducted in experimental fields, Department of Horticulture, University of Bagdad, in Abu-Graib  during season 2011-2012 for jerusalum artichoke. This study was included the effect of dipping tubers in three concentrations of GA3(2.5,5,10g/l) (G1,G2,G3),as well as to control treatment (G0), and spraying nutrient solution Agro leaf A1 (8g/l), as well as to control treatment (A0). This study was made by using Factorial experiment (4*2) within the design RCBD with three replicates. Results could be summarized as follows: G3A0 increased field emergence (12.00 day), G2A0 increased percentage of germination (99.33%) and G2A1 increased number of branches (4.60 stem.plant-1) but the treatment G1A1gave highest rate for number of leaves, leaf area, guide of leaf area, dry weight of the vegetative parts and dry weight of 100gm tubers as(4495.10 leaf.plant-1, 2246.20 dsm2, 99.84, 922.40g, 24.00g.) respectively. The treatments gave significant differences quantity yield, so treatment G3A0 gave highest weight of the tubers as(45.55g.) but the treatment G3A1 gave highest number of the tubers as(68.00 tuber.plant-1 ) and highest yield of plant as (2890g/plant).


2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Herni Ali

The aim of this study is examining the relationship between cointergration and causality levels of Exchange Rate, GDP, BI interest rates and inflation on Islamic Capital Markets. The data used in this study is a quantitative secondary data in the form of time series of the period January 2010 to December 2013. The test were conducted with the approach of multiple regression models with variable index research JII (Y), the exchange rate (X1), GDP (X2) , BI rate (X3) and inflation (X4) as for hypothesis testing performed using SPSS statistical software. From the results obtained by testing the hypothesis that: a positive effect on the exchange rate, positive effect on GDP, interest harga sewa rates BI negative effect and inflation positive effect on JII. Simultanious testing into four macroeconomic variables affect the JII.DOI: 10.15408/sjie.v3i2.2061   


2011 ◽  
Vol 68 (2) ◽  
pp. 191-199 ◽  
Author(s):  
María Teresa Castellanos ◽  
María Jesús Cabello ◽  
María del Carmen Cartagena ◽  
Ana María Tarquis ◽  
Augusto Arce ◽  
...  

Nitrogen (N) is an important nutrient for melon (Cucumis melo L.) production. However there is scanty information about the amount necessary to maintain an appropriate balance between growth and yield. Melon vegetative organs must develop sufficiently to intercept light and accumulate water and nutrients but it is also important to obtain a large reproductive-vegetative dry weight ratio to maximize the fruit yield. We evaluated the influence of different N amounts on the growth, production of dry matter and fruit yield of a melon 'Piel de sapo' type. A three-year field experiment was carried out from May to September. Melons were subjected to an irrigation depth of 100% crop evapotranspiration and to 11 N fertilization rates, ranging 11 to 393 kg ha-1 in the three years. The dry matter production of leaves and stems increased as the N amount increased. The dry matter of the whole plant was affected similarly, while the fruit dry matter decreased as the N amount was increased above 112, 93 and 95 kg ha-1, in 2005, 2006 and 2007, respectively. The maximum Leaf Area Index (LAI), 3.1, was obtained at 393 kg ha-1 of N. The lowest N supply reduced the fruit yield by 21%, while the highest increased the vegetative growth, LAI and Leaf Area Duration (LAD), but reduced yield by 24% relative to the N93 treatment. Excessive applications of N increase vegetative growth at the expense of reproductive growth. For this melon type, rates about 90-100 kg ha-1 of N are sufficient for adequate plant growth, development and maximum production. To obtain fruit yield close to the maximum, the leaf N concentration at the end of the crop cycle should be higher than 19.5 g kg-1.


Author(s):  
Nadia Nasser Hamid

An experiment was conducted during the Agricultural spring seasons 2019 at Abul-Khasib, Basrah. The experiment included 6 treatments combination resulted from the interaction between two plant distances (30 and 60 cm apart), with the addition of three concentrations of vitamin C (0, 20, 40) Mg. liter-1. Randomized Complete Block Design was used in a factorial experiment, mean variations replication compared at 0.05. Results can be summarized as follows: The plant spacing of 60 cm caused a significant effect on the all of the results of vegetative growth (leaves number, surface leaf area, total soluble of carbohydrates contents and chlorophyll) except plant height it gave a significant increase in 30 cm. whereas, the plant spacing of 60 cm gave a significant reduction in the (fruit weight, fruit number. plant-1 and yield. plant-1). Regarding the spraying, levels increased significantly in all component, except pod length it gave a significant decrease in vitamin C levels increased. While there was no significant effect on the interaction between the two studied factors.


2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Md. Quamruzzaman ◽  
Md. Jafar Ullah ◽  
Md. Fazlul Karim ◽  
Nazrul Islam ◽  
Md. Jahedur Rahman ◽  
...  

Boron is an important micronutrient that enhances vegetative growth and yield of crops, like peanut. Light also plays an important role in pegging of peanut. There has been little information regarding the application of boron and light in peanut in Bangladesh. Therefore, a field experiment was conducted to study the response of boron and light on morph-physiology and pod yield of two peanut varieties. Treatments considered two peanut varieties,namely, Dhaka-1 and BARI Chinabadam-8, three levels of boron (B),namely, 0-kg B ha−1(B0), 1-kg B ha−1(B1), and 2-kg B ha−1(B2), and two levels of light,namely, normal day light (≈12 h light) and normal day light + 6 h extended red light at night (≈18 h light). Result revealed that days to first-last emergence and days to first-50% flowering took shorter times and vegetative growth, pods dry weight plant−1, pod yield, and germination were markedly increased with the application of boron. Vegetative growth and germinations were significantly increased in light, but the lowest leaf area, pods dry weight plant−1, and pod yield were found in light. Without germination, the highest vegetative growth, reproductive unit, and pod yield were observed from BARI Chinabadam-8. Days to first-last emergence, days to first-50% flowering, and number of branches plant−1were found linearly related to pod yield.


2019 ◽  
Vol 1 (1) ◽  
pp. 35-49
Author(s):  
M Arif ◽  
Fefri Indra Arza

This study aims to look at regional financial independence, effectiveness of local government finance, efficiency and expenditure harmony on allocation of capital expenditure. The population in this study are all regency/city in sumatera barat as many as 19. The sample in this study using a sampling technique total sampling. Analyses were performed using multiple regression models. the results showed that partially, regional financial independence positive effect does not significantly on allocation of capital expenditure, effectiveness negative effect does not significantly on allocation of capital expenditure, efficiency positive effect significantly on allocation of capital expenditure, expenditure harmony positive effect significantly on allocation of capital expenditure, simultaneously regional financial independence, effectiveness of local government finance, efficiency and expenditure harmony significant effect on allocation of capital expenditure


2021 ◽  
Vol 56 (3) ◽  
pp. 549-566
Author(s):  
H. Hersugondo ◽  
Imam Ghozali ◽  
Endang Triwidyarti ◽  
Eka Handriani

The purpose of this paper is to examine the most significant determinants of the intellectual capital of manufacturing firms in Indonesia. Furthermore, using a regression model, it investigates whether the models proposed can provide the same explanation in Europe as in Indonesia. Multiple regression models were used during this study. Ten variables were tested statistically, using e-views of samples of 176 manufacturing companies listed on the Indonesia Stock Exchange during this study. The results indicate that leverage, audit committee, company size, and the independent board positively influence intellectual capital disclosure. However, leverage has a negative effect on firm size. These findings comply with the pecking order and financial agency theory, which helps understand the application of various studies on value for firms in Indonesia. This research was able to explore the IC determinants of manufacturing firms. However, more detailed evaluations could be conducted.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Evy Latifah ◽  
Amik Krismawati ◽  
Mohammad Saeri ◽  
Zainal Arifin ◽  
Bas Warsiati ◽  
...  

This study aimed to examine plant growth of tomato grafted onto different eggplant rootstocks. We applied a randomized block design comprising twelve treatments with three replicates. Three varieties of tomato—Cervo, Karina, and Timoty—and three rootstocks—Gelatik, EG203 line, and Solanum torvum—were selected for this study. Nongrafted tomato plants of the same varieties were used as controls. The variables recorded were the number of branches, the diameter of scions and rootstocks, root length, and root dry weight at 4, 6, 8, and 10 weeks after planting (WAT) and relative growth rate, specific leaf area, and net assimilation rate at 4, 8, and 12 WAT. Grafted tomato plants demonstrated better growth than controls. There was a significant relationship between yield, plant growth parameters, and photosynthetic organs, expressed by higher production, greater scion diameter, longer roots, and increased relative growth rate, leaf area ratio, and net assimilation rate of grafted plants, compared to the controls.


Poljoprivreda ◽  
2020 ◽  
Vol 26 (2) ◽  
pp. 72-78
Author(s):  
Zora Kažimir ◽  
◽  
Gvozden Dumičić ◽  
Bojan Stipešević

The aim of this study was to determine the impact of the applied fertilization on the vegetative growth and yield parameters of garlic (Allium sativum L.) during cultivation at the locations in Split and Ljubitovica. The experiment with the local Ljubitovački Šarac garlic genotype was set up from the fall to the summer of the 2012/2013 growing season. Three types of fertilization were applied: a mineral, organic, and an organomineral one. Climatic conditions, vegetative growth, and the garlic yield parameters were monitored during vegetation. A location impact was statistically significant. In Split, better results were recorded concerning the plant height (35.8 cm) and the number of leaves (7.4), while better results were obtained concerning a percentage of the extracted heads (68.3%), total yield (427.5 g), and a percentage of the marketable plants (98.5%) at the Ljubitovica locality The effect of fertilization had no statistically significant differences. The area of Ljubitovica turned out to be more suitable for growing the Ljubitovački Šarac genotype, whereas the organic fertilization has not produced a negative effect on the investigated parameters of the garlic yield, which is contributing toward a possibility of growing this genotype pursuant to the organic agriculture legislation.


2020 ◽  
Vol 43 (12) ◽  
pp. 1813-1823 ◽  
Author(s):  
Haji Sunarpi ◽  
Rina Kurnianingsih ◽  
Mursal Ghazali ◽  
Rizka Azzahral Fanani ◽  
Anggit L. Sunarwidhi ◽  
...  

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