scholarly journals Weed Interference Periods in Pre-Sprouted Sugarcane Seedlings

2019 ◽  
Vol 37 ◽  
Author(s):  
F.C.R. AMARAL ◽  
M.P. NEPOMUCENO ◽  
A.R.C.S. CHAVES ◽  
S.D. CARLIN ◽  
C.A.M. AZANIA
Keyword(s):  
Block Design ◽  
Total Period ◽  
Weed Interference ◽  
Sugarcane Crop ◽  
Randomized Block Design ◽  
Urochloa Decumbens ◽  
Sigmoidal Model ◽  
Plant Stand ◽  
Stalk Yield ◽  
The Impact

ABSTRACT: The aim of this research was to determine weed interference periods in sugarcane cultivated under the system of pre-sprouted seedlings, taking into account the impact on the final plant stand, and bud yield and stalk yield. In the field, this study used a randomized block design with 14 treatments and four replications. The treatments consisted of periods of control and weed coexistence with the sugarcane crop (cultivar IACSP95-5000): 30, 60, 90, 120, 150, 180, 210 and 240 days after planting. A phytosociological survey was carried out in the experimental area, and the species Merremia aegyptia, Urochloa decumbens and Nicandra physaloides were found to be predominant. At the end of 240 days, regression analysis was performed according to Boltzmann’s sigmoidal model and considering loss tolerance of 5% in the evaluated variables. For final plant stand, the period prior to interference was 31 days and the total period of interference prevention was 187 days. For bud yield, the period prior to interference was 23 days and the total period of interference prevention was 178 days. For stalk yield, the period prior to interference was 19 days and the total period of interference prevention was 195 days. Weed interference was detrimental to all evaluated variables, with losses of up to 100% of the sugarcane plants after 120 days of weed coexistence.

scholarly journals Interference periods of velvet bean in sugarcane

2016 ◽  
Vol 46 (8) ◽  
pp. 1329-1337 ◽  
Author(s):  
Fernanda Nunes Bressanin ◽  
Nelson Jayme Neto ◽  
Mariluce Pascoalina Nepomuceno ◽  
Pedro Luís da Costa Aguiar Alves ◽  
Willians César Carrega
Keyword(s):  
Critical Period ◽  
Block Design ◽  
Velvet Bean ◽  
Total Period ◽  
Sugarcane Cultivar ◽  
Weed Interference ◽  
Randomized Block Design ◽  
Bud Sprouting ◽  
Sugarcane Yield

ABSTRACT: The objective of the present study was to determine the periods of interference of velvet bean on ratoons of sugarcane cultivar 'RB855536' and to identify its potential for decreasing the crop yield and the quality of the harvested product. The experiment was arranged in a randomized block design, with 18 treatments divided into two groups and four replicates per treatment. In the first group, the sugarcane was kept free from velvet bean interference for nine different periods, beginning at bud sprouting: 0-15, 0-30, 0-45, 0-60, 0-90, 0-120, 0-150, and 0-180 days after budding (DAB) and 0-harvest. In the second group, sugarcane was grown in coexistence with velvet bean during the same periods described for the first group. The critical period of interference prevention for velvet bean in ratoons of sugarcane cv. 'RB 855536' lasted 138 days, from 50 DAB (pre-interference period [PIP]) to188 DAB (total period of weed interference prevention [TPIP]). Velvet bean interference caused a 50% decrease in sugarcane yield and negatively affected the quality of the harvested product.

scholarly journals Interference Periods of Raphanus raphanistrum L. in Sunflower Crop

2020 ◽  
Vol 38 ◽  
Author(s):  
D. AGOSTINETTO ◽  
N. WESTENDORFF ◽  
R.R. ZANDONÁ ◽  
A.R. ULGUIM ◽  
A.C. LANGARO
Keyword(s):  
Block Design ◽  
Dry Mass ◽  
Wild Radish ◽  
Raphanus Raphanistrum ◽  
Total Period ◽  
Weed Interference ◽  
Randomized Block Design ◽  
Development Cycle ◽  
Sunflower Crop ◽  
Crop Cycle

ABSTRACT: Raphanus raphanistrum L. (wild radish) stands out among the weeds that cause greatest damage to the sunflower crop, due to the development cycle and adaptability. The objective of this research was to determine interference periods of sunflower interacting with wild radish, and the effects of competition on yield and its components. The experiment was conducted in the field in a randomized block design with four replications. The treatments were arranged in a factorial design with factor A composed of wild radish coexistence or control in sunflower, and factor B, for eight periods (0, 7, 14, 21, 28, 35, 42 and 135 days after crop emergence). It was evaluated height, diameter of chapters, achene yield and dry matter of weeds and crop. The presence of wild radish adversely affects the accumulation of dry mass, head diameter, thousand grain weight and reduces sunflower productivity when the wild radish interacts during the whole crop cycle, but does not affect on plant height. Chemical control of wild radish may be adopted at the end of period prior to interference, which for sunflower crop is 13 DAE, and the application is sufficient to avoid weed interference until the end of the total period of interference prevention which occurs until 17 days after crop emergence.

scholarly journals Phytosociological Survey and Weed Interference in Eggplants Cultivation1

2016 ◽  
Vol 34 (2) ◽  
pp. 309-318 ◽  
Author(s):  
L.J.P. MARQUES ◽  
S. BIANCO ◽  
A.B. C. FILHO ◽  
M.S. BIANCO
Keyword(s):  
Weed Management ◽  
Block Design ◽  
Cyperus Rotundus ◽  
State University ◽  
Important Species ◽  
Total Period ◽  
Weed Interference ◽  
Randomized Block Design ◽  
High Relative Importance ◽  
Phytosociological Study

ABSTRACT Eggplants are vegetables of great importance in the South and Southeast regions of Brazil, which are subject to interference from weeds. In order to collaborate with weed management in this vegetable, this study was carried out to determine the periods of weed interference in growing eggplants. The study was conducted in the Brazilian municipality of Jaboticabal, SP, at the Faculty of Agricultural and Veterinary Sciences, UNESP [Universidade Estadual Paulista "Júlio de Mesquita Filho" (São Paulo State University)], in the period from February to July 2013. The experiment was arranged in a randomized block design with 22 treatments, three replications divided in 11 periods of coexistence and weed control with eggplants: 14, 28, 42, 56, 70, 84, 98, 112, 126, 140 and 154 days after transplanting (DAT). In each treatment, a phytosociological study was carried out to identify the important species of weeds in eggplant crops. The main weeds were Eleusine indica, Nicandra physaloides, Portulaca oleracea and Cyperus rotundus due to their high relative importance. The interference of these weeds caused losses of up to 96% to the standard commercial fruit yield. The period before interference was 6 DAT and the total period of interference was 102 DAT. Therefore, it is concluded that after the initial six days after transplanting eggplants, the crop should be free of weeds within the next 96 days.

Effect of Integrated Nutrient Management on Yield and Quality of Garlic cv. Yamuna Safed-3

2020 ◽  
Vol 7 (04) ◽  
Author(s):  
A B Priyanshu ◽  
M K Singh ◽  
Mukesh Kumar ◽  
Vipin Kumar ◽  
Sunil Malik ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Quality Parameters ◽  
Organic Fertilizers ◽  
Research Centre ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
The Impact ◽  
Horticultural Research

An experiment was conducted at Horticultural Research Centre, SVP University of Agriculture and Technology, Meerut (UP) during Rabi season of 2018-19 to assess the impact of different INM doses on yield and quality parameters of garlic. A total of ten treatments consisting of combinations of inorganic fertilizers, organic fertilizers and bio-fertilizers like T1- (Control), T2RDF (100:50:50 kg NPK ha-1), T3-RDF + 20 kg sulphur + FYM 20 ton ha-1, T4- RDF + 20 kg sulphur + VC 4 ton ha-1, T5- 75% RDF + 40 kg sulphur + 5 ton FYM ha-1+ PSB 5 kg ha-1, T6-75% RDF + 40 kg sulphur + 2 ton VC + Azotobacter 5 kg ha-1, T7- 75% RDF + 40 kg sulphur + FYM 3 ton + VC 1 ton+ PSB 5 kg + Azotobacter 5kg ha-1, T8- 50% RDF + 40 kg sulphur + FYM 5 ton + VC2 ton + PSB 5 kg ha-1, T9- 50% RDF + 40 kg sulphur + FYM5 ton + VC 2 ton+ Azotobacter 5 kg ha-1and T10- 50% RDF + 40 kg sulphur + FYM 5 ton + VC2 ton + PSB 5 kg + Azotobacter 5 kg ha-1 were used in Randomized Block Design and replicated thrice. Out of these an application of T7 (75% RDF + 40 kg sulphur + FYM3 ton + VC 1 ton ha-1 + PSB 5 kg + Azotobacter 5 kg ha-1) was found to be significantly superior in term of yield and attributing parameters of garlic.

PSVI-14 Blend of Additives in Nursery Pig Diets as an Antibiotics Substitute Increases the Growth Performance and Intestinal Health

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 201-201
Author(s):  
Sudario Roberto Silva Junior ◽  
Rhuan F Chaves ◽  
Maíra Resende ◽  
Ygor Henrique De Paula ◽  
Kenio De Gouvêa Cabral ◽  
...  
Keyword(s):  
Growth Performance ◽  
Animal Feed ◽  
Block Design ◽  
Average Daily Gain ◽  
Basal Diet ◽  
Intestinal Health ◽  
Total Period ◽  
Nursery Pigs ◽  
Randomized Block Design ◽  
Diarrhea Incidence

Abstract Antibiotics growth promoting (AGP) in animal feed has been restricted. With this, several additives have been tested in order to replace AGP and ensure intestinal health. The objective of this study was to evaluate the effects of a blend of additives on growth performance, diarrhea incidence and cecal content microbiota of nursery pigs. A total of 576 weaned pigs (6.21 ± 1.16 kg) were assigned into 4 treatments (12 replicates) in randomized block design: basal diet without additives (NC); basal diet with 120 ppm of halquinol (PC); NC + 0,05% blend of lactic acid (3,5%), benzoic acid (2,5%), flavonoids (3,5%) (B5); NC+ 0,1% of same blend (B10). The pigs were weighed 0 and 42 days into the experiment. On day 10, one animal per pen (10 replicates) was euthanized for microbiota analyses. The diarrhea incidence was calculated by the percentage of visual pens with diarrhea, by day, in the period. The growth performance was analyzed by GLIMMIX procedure and the means were compared with Tukey test (P < 0.050) (SAS, 2009). Diarrhea incidence was analyzed by GENMOD procedure (SAS, 2009). The Kruskal Wallis test was used to compare microbial biodiversity (P < 0.050) by statistical program STAMP. The final weight (P = 0.010) and average daily gain (P = 0.001) of B10 and PC were higher than NC. Regarding diarrhea, it was observed that the B5 and B10 had lower incidence when compared to other groups in the total period. In the microbiome analyses, it was observed that the B5, B10, and PC groups had lower (P = 0.021) biodiversity when compared to the NC piglets. However, the B5 and B10 group had higher biodiversity when compared to the PC group. In conclusion, the supplementation with 0,1% blend of additives can be a substitute for AGP.

scholarly journals Insights into the Positive Effect of Pyraclostrobin on Sugarcane Productivity

Agronomy ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 122 ◽  
Author(s):  
Amanda Moreira Lopes ◽  
Pedro Schumacher ◽  
Aurora Terylene Pérez Martínez ◽  
Antônio Paulino da Costa Netto ◽  
Antonio Chalfun-Junior
Keyword(s):  
Block Design ◽  
Positive Influence ◽  
Randomized Block Design ◽  
Rate Of Photosynthesis ◽  
Enzyme Superoxide Dismutase ◽  
Management Techniques ◽  
Stalk Yield ◽  
Sugarcane Productivity ◽  
High Yields ◽  
Positive Effect

Achieving high yields is a challenge for sugarcane producers due to the diverse environmental conditions to which the crop is subjected. In tropical and subtropical regions, where sugarcane is typically cultivated, crop diseases are common. This necessitates the development of disease management techniques. Among these techniques, chemical control is of particular significance due to the development of new antifungal agents, such as pyraclostrobin. For some crops, pyraclostrobin has a positive influence on yield due to its effects on plant physiology. The aim of this study was to evaluate the physiological responses and yield of three sugarcane cultivars treated with the fungicide, pyraclostrobin. The experiment was performed in a randomized block design (RBD) with a split-plot arrangement; the variables analyzed were the application or non-application of fungicide in the plots and, in the subplots, the evaluation times after fungicide application. Both the rate of photosynthesis and the antioxidant enzyme (Superoxide Dismutase, Catalase and Ascorbate Peroxidades) activity increased in plants treated with fungicide in comparison to untreated plants, and in the RB855156 cultivar the stomatal conductance, transpiration, and nocturnal respiratory rate were increased. Furthermore, application of pyraclostrobin increased stalk yield and the green biomass index in the RB855156 and RB86751 sugarcane cultivars. In certain cultivars of sugarcane, application of pyraclostrobin leads to an increased yield.

scholarly journals Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2399 ◽  
Author(s):  
Diogo Brito de Almeida ◽  
José Geraldo Barbosa ◽  
José Antônio Saraiva Grossi ◽  
Fernando Luiz Finger ◽  
Joice Crescencio Heidemann
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Cut Flowers ◽  
Floral Buds ◽  
Randomized Block Design ◽  
Commercial Harvest ◽  
Physiological Phenomenon ◽  
Cold Chamber ◽  
The Impact

Exposure of bulbs to cold, a physiological phenomenon called vernalization, and bulb size are important factors in the production of lily bulbs and flowers. This study aimed to verify the influence of vernalization of bulbs on flowering cut lily plants, as well as the impact of size and shape of harvest on the production and quality of flowers and bulbs. In turn, the way the stems of the plants used for cut-flower production are cropped is of higher importance for the production of new flower bulbs. In this sense, the experiment was conducted in Viçosa, MG, in a greenhouse in a randomized block design, in split splot scheme with three replications, in which the vernalization periods (25, 35 and 45 days at 4 ± 1 C) constituted the plots; bulb sizes (diameters of 3.2-3.8 cm; 2.5-3.2 cm 1.9- and 2.5 cm), subplots and ways to harvest (full harvest of the stem at the required length for the commercial harvest of the flower, commercial stem harvest at the commercial length, maintaining 10cm of stem in the soil; removal of the floral buds as soon as their appearance is observed and harvest at the end of the season), the sub subplots. The bulbs were planted in beds, with 15 x 20 cm spacing. It was evaluated the number of plants that flowered and the number of flowers, the length and the diameter of the floral buds, fresh and dry weights, diameter and plant height as well as number, perimeter and amount of fresh and dry bulbs. There was a decrease in the plant height with the increase of the vernalization period and a reduction of the diameter of the planted bulbs, as well as of the number and the fresh and dry weights of the produced buds. The production of flowers and buds in number, size and weight was directly proportional to the size of the planted bulbs, while the form of harvest with removal of flower buds increased the number, the perimeter and the fresh and dry weights of the buds. Bulbs with diameter between 3.2 - 3.8 cm, stored for 25 days in cold chamber enable greater production of flowers and the highest stem height, factors that favor the increase in market value.

scholarly journals Selectivity of Herbicide Associations with Chemical Protector in the Treatment of Sweet Sorghum Hybrid Seeds

2017 ◽  
Vol 35 (0) ◽  
Author(s):  
C.D.G. MACIEL ◽  
A.M. OLIVEIRA NETO ◽  
N. GUERRA ◽  
G.B. LEAL ◽  
A.A.P. SILVA ◽  
...  
Keyword(s):  
Sweet Sorghum ◽  
Seed Treatment ◽  
Plant Density ◽  
Block Design ◽  
Control Sample ◽  
Naphthalic Anhydride ◽  
Randomized Block Design ◽  
Hybrid Seeds ◽  
Stalk Yield

ABSTRACT Sweet sorghum culture is an alternative to sugar and ethanol production. With the aim of evaluating herbicide tank-mix selectivity associated or not to sweet sorghum seed treatment with naphthalic anhydride, two experiments with ESX5200 and EJX7C5110 hybrids were performed in red oxisol (clayey) field conditions, in the municipality of Campo Mourão, Paraná state. A randomized block design was used, with 4 x 2 factorial scheme, with four replications. The first factor represented three herbicide associations and a control sample without herbicide, and the second factor was constituted by the absence or presence of seed treatment with naphthalic anhydride (5.0 g kg-1). Herbicide treatments were tank-mixes of atrazine + S-metolachor (2,640 + 480 g ha 1) (pre-emergence); atrazine + S-metolachlor + isoxaflutole (2,640 + 480 + 11.25 g ha-1) (pre-emergence) and atrazine + S-metolachlor (1,500 + 384 g ha-1) (post-emergence). The following characteristics were evaluated: intoxication, plant height, stalk diameter, number of internodes per stalk and plant density, performed 60 days after emergence (DAE); stalk yield and Brix, were evaluated on day 85 DAE. Atrazine + S-metolachlor tank-mix applied in pre or post-emergence did not affect growth, development, yield and stalk quality of the ESX5200 and EJX7C5110 sweet sorghum hybrids. Sweet sorghum seed treatment with naphthalic anhydride provided partial protection against the action of atrazine + s-metolachlor + isoxaflutole tank-mixes, being more evident for the ESX5200 hybrid.

scholarly journals Interference of Urochloa plantaginea on Morphophysiology and Yield Components of Black Beans

2019 ◽  
Vol 11 (9) ◽  
pp. 272
Author(s):  
Milena Barretta Franceschetti ◽  
Leandro Galon ◽  
Maico André Michelon Bagnara ◽  
Renan Pawelkiewicz ◽  
Leonardo Brunetto ◽  
...  
Keyword(s):  
Block Design ◽  
Plant Morphology ◽  
Co2 Concentration ◽  
Crop Productivity ◽  
Dry Mass ◽  
Control Group ◽  
Total Period ◽  
Black Beans ◽  
Physiological Variables ◽  
Randomized Block Design

Among the factors which affect crop productivity, there are weeds which compete for environment resources. The objective of this work was to determine the periods of interference of alexandergrass on the morphophysiology and productivity components of black beans. The experiment was conducted in a complete randomized block design with four replications. The bean cultivar of the black type used was IPR Uirapuru, being the treatments separated in two models of interference: in the coexistence group, the crop of the bean lived with the alexandergrass by growing periods of 0, 7, 14, 21, 28, 35, 42 and throughout the cycledays after emergence and throughout the cycle; in the control group the crop was kept free of the infestation for the same periods described previously. At 42 DAE were evaluated the variables related to plant morphology and physiology (height of bean plants, number of trifoliate leaves, dry mass plant, number of grains pods, number od pods plants, stomatal conductance, internal CO2 concentration, photosynthetic activity, efficiency of carboxylation, efficient use of water, transpiration rate). Considering the results, it is possible to conclude that the critical period of interference prevention (CPIP) comprises 24 to 50 DAE, the period before the interference (PBI) was 24 DAE and the total period of interference prevention (TPIP) was 50 days and that the morphological and physiological variables of the plants were negatively affected in the coexistence with the alexandergrass when compared to the treatments kept free of weeds throughout the crop cycle.

scholarly journals Pemanfaatan Limbah Kulit Buah Naga (Hylocereus costaricensis) dalam Pembuatan Teh Herbal dengan Penambahan Jahe

2017 ◽  
Vol 2 (3) ◽  
pp. 233-243
Author(s):  
Raudhatul Aiyuni ◽  
Heru Prono Widayat ◽  
Syarifah Rohaya
Keyword(s):  
Moisture Content ◽  
Sensory Evaluation ◽  
Block Design ◽  
Ash Content ◽  
Herbal Tea ◽  
Fruit Peel ◽  
Randomized Block Design ◽  
Dragon Fruit ◽  
Two Factors ◽  
The Impact

Abstrak. Tujuan penelitian untuk mengetahui pengaruh suhu pengeringan kulit buah naga dan konsentrasi penambahan jahe terhadap teh herbal serta mengetahui tingkat penerimaan konsumen terhadap teh herbal kulit buah naga dan jahe. Penelitian menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan 2 faktor. Faktor pertama adalah suhu pengeringan (T) yaitu T1 = 50⁰C, T2 = 60⁰C, T3 = 70⁰C. Faktor kedua adalah konsentrasi jahe (J) yaitu J1= 0%, J2= 10%, J3= 14%. Hasil penelitian menunjukkan bahwa suhu pengeringan berpengaruh sangat nyata (P≤0,01) terhadap kadar air, kadar abu, dan nilai organoleptik warna teh herbal kulit buah naga dan jahe yang dihasilkan, dan berpengaruh nyata (P≤0,05) terhadap nilai organoleptik rasa. Konsentrasi jahe (J) berpengaruh sangat nyata (P≤0,01) terhadap nilai organoleptik rasa teh herbal kulit buah naga dan jahe, dan berpengaruh nyata (P≤0,05) terhadap kadar air, dan nilai organoleptik warna. Interaksi suhu pengeringan dengan konsentrasi jahe (T×J) berpengaruh nyata (P≤0,05) terhadap nilai organoleptik rasa teh herbal kulit buah naga dan jahe. Berdasarkan hasil penelitian diperoleh perlakuan terbaik yaitu perlakuan dengan suhu pengeringan 50OC (T1) dan penambahan konsentrasi jahe 14% (J3) memiliki kadar air 10,89%, kadar abu 5,85%, aktivitas antioksidan 59,05% dan total fenol 6,07 mg GAE/g bahan. Utilization Of Waste Dragon Fruit Peel (Hylocereus Costaricensis) In The Production Of Herbal Tea With Additional Ginger Abstract. The purpose of this study was to know the impact of dried temperature and concentration additional of ginger and also to know the level of accept consumen for herbal tea dragon fruit peel and ginger. This study uses a randomized block design (RAK) Faktorial two factors. The first factor is dried temperature (T) that is T1 = 50⁰C, T2 = 60⁰C, T3 = 70⁰C. Factor II is consentration to add ginger (J) that is J1= 0%, J2= 10%, J3= 14%. The result of it showed that dried temperature obviously affected (P ≤ 0.01) on the moisture content, ash content, and sensory evaluation of color herbal tea dragon fruit peel and ginger, and obviously affected (P≤0,05) to the sensory evaluation of taste. While, the ginger consentration obviously affected (P ≤ 0.01) on the sensory evaluation of taste herbal tea dragon fruit peel and ginger, and obviously affected (P≤0,05) on the moisture content, and sensory evaluation of color. The interaction type of dried temperature with the ginger consentration obviously affected (P≤0,05) on the on the sensory evaluation of taste herbal tea dragon fruit peel and ginger. The best treatment is obtained from dried temperature 50°C (T1) and the addition of ginger concentration of 14% (J3) that product moisture content of  10,89%, ash content 5,85%,  antioxidant activity 59,05% and total phenol 6.07 mg GAE / g of material.

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