scholarly journals Leaf development and growth of selected sugarcane clones in a subtropical environment

2010 ◽  
Vol 45 (10) ◽  
pp. 1049-1057 ◽  
Author(s):  
Nereu Augusto Streck ◽  
Joana Graciela Hanauer ◽  
Luana Fernandes Gabriel ◽  
Taise Cristine Buske ◽  
Josana Andréia Langner
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Saccharum Officinarum ◽  
Base Temperature ◽  
Subtropical Climate ◽  
Allometric Relationships ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Santa Maria ◽  
Subtropical Environment

The objective of this work was to compare phyllochron and leaf area on individual stalks of selected sugarcane (Saccharum officinarum) clones grown in a subtropical environment. A two-year field experiment was carried out in Santa Maria, RS, Brazil, during the 2007/2008 and 2008/2009 growing seasons. Three sugarcane clones were used: IAC 822045 (early), SP 711406 (median) and CB 4176 (late), in a complete randomized block design, with four replications. Expanded leaf and total leaf (tips) number were determined, and expanded leaf area was measured. The phyllochron (ºC day leaf-1) based on expanded and tip leaf number was estimated, using 10ºC as base temperature. Allometric relationships between individual area and number of expanded leaves were fitted. Phyllochron was analysed as a four-factor experiment: clone, growing season, phyllochron phase, and phyllochron type. The early clone had the greatest potential for growing in a subtropical climate because of higher leaf output and leaf area.

scholarly journals Base temperature, thermal time and phyllochron of escarole cultivation

2018 ◽  
Vol 36 (4) ◽  
pp. 466-472
Author(s):  
Denise Schmidt ◽  
Braulio O Caron ◽  
Oscar Valera ◽  
Daniela Meira ◽  
Daniele C Fontana ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Coefficient Of Variation ◽  
Regression Coefficient ◽  
Block Design ◽  
Thermal Time ◽  
Base Temperature ◽  
Degree Days ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Santa Maria

ABSTRACT The objective of this study was to determine the base temperature of escarole and to apply in the phenological analysis of crop during four growing periods. The study was carried out with escarole (Chicorium endivia) ‘Escarola Lisa’ cultivar, at the Federal University of Santa Maria, campus Frederico Westphalen-RS. The experiment was performed in a randomized block design with four sowing periods (P1: 2/15/2015; P2: 04/29/2015, P3: 07/22/2015, P4: 10/16/2015) and 10 replicates, each replicate being one plant. The evaluations consisted of counting the number of leaves, performed three times a week after transplanting date until the harvesting point. To determine the base temperature, the following methods were used: standard deviation in degree-days (SDgd), standard deviation in days (SDd), coefficient of variation in degree-days (CVgd), coefficient of variation in days (CVd), regression coefficient (RC) and X-intercept. The base temperature for emission of two successive leaves in the escarole is 4.7°C, obtained by values of 4.0 and 5.5°C, observed in the SDgd and RC methods. For two leaves emission, the temperature between 16.6 and 27.8°C day leaf-1 is necessary.

scholarly journals SEQÜÊNCIA DE CULTIVOS IRRIGADOS NA PRIMAVERA-VERÃO: ARROZ DE TERRAS ALTAS E MILHO OU SORGO

Irriga ◽  
2003 ◽  
Vol 8 (3) ◽  
pp. 191-202
Author(s):  
Marcio Furlan Maggi ◽  
Renato Beppler Spohr ◽  
Reimar Carlesso ◽  
Juliano Gomes de Andrade
Keyword(s):  
Grain Yield ◽  
Technical Efficiency ◽  
Upland Rice ◽  
Block Design ◽  
Maize Yield ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Sowing Dates ◽  
Engineering Department ◽  
Santa Maria

SEQÜÊNCIA DE CULTIVOS IRRIGADOS NA PRIMAVERA-VERÃO: ARROZ DE TERRAS ALTAS E MILHO OU SORGO   Marcio Furlan MaggiRenato Beppler SpohrReimar CarlessoJuliano Gomes de AndradeDepartamento de Engenharia Rural, Universidade Federal de Santa Maria, Santa Maria, RS. Cep 97119-900. E-mail: [email protected]   1 RESUMO  A época de semeadura pode ser utilizada para aumentar as perspectivas das plantas escaparem dos períodos em que as variáveis meteorológicas são adversas às culturas. Assim, propôs-se o estudo com o objetivo de determinar a melhor época de semeadura para a produção de grãos de arroz de terras altas e milho ou sorgo irrigados por aspersão na região de Santa Maria, RS, Brasil. O trabalho foi conduzido em área experimental do Departamento de Engenharia Rural da Universidade Federal de Santa Maria, no ano agrícola 2001/2002. Dois experimentos foram conduzidos no delineamento experimental de blocos ao caso com quatro repetições. Os tratamentos do primeiro experimento foram constituídos de quatro épocas de semeadura do arroz (18 de setembro, 04 de outubro, 19 de outubro e 05 de novembro). Os tratamentos do segundo experimento foram constituídos de quatro datas de semeadura do milho e do sorgo, semeados após a colheita do arroz; 28 de janeiro, 08 de fevereiro, 20 de fevereiro e 05 de março. As datas de semeadura do arroz ocasionaram diferenças no rendimento de grãos, apresentando a máxima eficiência técnica (5,80 Mg ha-1) para estimativa de semeadura realizada em 13 de outubro. A máxima eficiência técnica para o rendimento de grãos de milho (7,82 Mg ha-1) ocorreupara a estimativa de semeadura realizada em 31 de janeiro. Para o sorgo, o maior rendimento (8,46 Mg ha-1) ocorreu para a semeadura realizada em 28 de janeiro. Para sucessão de culturas arroz e milho / sorgo, a época recomendada para a semeadura do arroz deve ocorrer na segunda quinzena de setembro.  UNITERMOS: época de semeadura, massa seca, elementos meteorológicos   MAGGI, M.F.; SPOHR, R. B.; CARLESSO, R.; ANDRADE, J. G. DOUBLE-CROPPING IRRIGATION DURING SPRING - SUMMER SEASON USING UPLAND RICE AND MAIZE OR SORGHUM   2 ABSTRACT  The objective of this work was to determine the influence of different sowing dates on grain yield of sprinkler irrigated rice, maize and sorghum in Rio Grande do Sul State - Brazil. Two experiments were held in the experimental area at the Agricultural Engineering Department - Federal University, Santa Maria – RS, Brazil, during the 2001/2002 growing seasons. A randomized block design was used with four replications. Treatments of the first experiment comprised four sowing dates of upland rice: September 18th, October 4th, October 19th and, November 5th. The treatments of the second experiment comprised four sowing dates of maize and sorghum (after upland rice harvest): January 28th, February 8th, February 20th and, March 5th. The upland rice sowing dates caused differences on grain yield. The maximum technical efficiency (5.80 Mg ha-1) was observed on October 13th sowing. The highest maize yield (7.82 Mg ha-1) was obtained on January 31st sowing (maximum technical efficiency). The highest sorghum yield (8.46 Mg ha-1) was obtained on January 28th  sowing (maximum technical efficiency). The total amount of grain production for both: upland rice + maize or upland rice + sorghum was obtained sowing the rice during the second half of September.  KEYWORDS: sowing times, dry matter, meteorological elements.

scholarly journals Nitrogen and potassium supply and the morphogenic and productive characteristics of marandu palisadegrass

2010 ◽  
Vol 39 (8) ◽  
pp. 1666-1675 ◽  
Author(s):  
Marcio Mahmoud Megda ◽  
Francisco Antonio Monteiro
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
System Development ◽  
Block Design ◽  
Dry Mass ◽  
Dry Matter Production ◽  
Root System Development ◽  
Randomized Block Design ◽  
Matter Production ◽  
Specific Length

The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part dry mass positively correlated with the number of tillers and leaves and grass leaf area. Nitrogen rates modulated the root system development, and the root specific length and surface decreased when high rates of nitrogen and potassium were supllied. Nitrogen and potassium influence Marandu palisadegrass morphogenic characteristics, which are determinant for grass dry matter production.

scholarly journals EARLY SPRING APPLICATION OF AMINOETHOXYVINILGLYCINE (AVG) INCREASES FRUIT SET AND YIELD OF ‘ROCHA’ PEARS

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
MATEUS DA SILVEIRA PASA ◽  
BRUNO CARRA ◽  
CARINA PEREIRA DA SILVA ◽  
MARLISE NARA CIOTTA ◽  
ALBERTO FONTANELLA BRIGHENTI ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Block Design ◽  
Quality Attributes ◽  
Fruit Weight ◽  
Early Spring ◽  
Full Bloom ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Return Bloom

ABSTRACT The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. Ethylene is associated with abscission of flowers and fruitlets. Then, the application of ethylene synthesis inhibitors, such as AVG, is a potential tool to increase fruit set of pears. The objective of this study was to evaluate the effect of AVG, sprayed at different rates and timings, on fruit set, yield and fruit quality of ‘Rocha’ pear. The study was performed in a commercial orchard located in the municipality of São Joaquim, SC, during the growing seasons of 2014/2015 and 2015/2016. Plant material consisted of ‘Rocha’ pear trees grafted on quince rootstock ‘BA29’. AVG was tested at different rates (60 mg L-1 and 80 mg L-1) and timings [full bloom, one week after full bloom (WAFB), and two WAFB), either alone or in combination. The experiment was arranged in a randomized block design, with at least five single-tree replications. The fruit set, number of fruit per tree, yield, estimated yield, fruit weight, return bloom, and fruit quality attributes were assessed. Fruit set and yield were consistently increased by single applications of AVG at 60 and 80 mg L-1 at both one and two weeks after full bloom, without negatively affecting fruit quality attributes and return bloom.

scholarly journals Pertumbuhan, Produktivitas dan Hasil Hablur Klon Tebu Masak Awal-Tengah di Tanah Inceptisol

2018 ◽  
Vol 46 (2) ◽  
pp. 208 ◽  
Author(s):  
Supriyadi , ◽  
Ahmad Dhiaul Khuluq ◽  
Dan Djumali
Keyword(s):  
Sugar Cane ◽  
Sugar Industry ◽  
Block Design ◽  
Sugar Content ◽  
Saccharum Officinarum ◽  
Sugar Yield ◽  
Raw Material ◽  
Dry Land ◽  
Experimental Station ◽  
Randomized Block Design

ABSTRACT<br />    <br />Sugar cane is a strategic commodity for the Indonesian government as raw material for the national sugar industry. Cultivation of sugar cane has been shifted to dry areas dominated by Inceptisol, Vertisol, and Ultisol soil. These conditions require certain clones to obtain high sugar yield. New improved varieties have been developed and 8 early-mid maturiting clones have been obtained. The study was aimed to evaluate and obtain earty-mid maturing clones with higher sugar yield than the existing varieties in dry land of Inceptisol soil. The study was conducted at the Karangploso Experimental Station, Malang from July 2015 to September 2016. The study was arranged in a randomized block design with three replications. The treatment consistsed of eight clones of early to mid maturing sugarcane clones and one control variety (Kenthung). The eight clones were (1) PS 04 117, (2) PS 04 259, (3) PS 04 129, (4) PS 05 258, (5) PS 06 391, (6) PS 06 370, (7) PS 06 188, and (8) JR 01. The results showed that three clones (PS 06 188, PS 05 258 and JR 01) produced higher sugar yield (10.45-11.88 ton ha-1), and the other clones showewd lower sugar yield (6.55-9.37 ton ha-1) than that of Kenthung variety (9.16 ton ha-1).PS 06 188 and PS 05 258 clones obtained the highest sugar yield of 11.88 and 11.49 ton ha-1, respectively.<br /><br />Keywords: dry land, performance, Saccharum officinarum,  sugar content, variety<br /><br />

scholarly journals Optimasi Dosis Pupuk Kandang Ayam dan NPK pada Budidaya Kubis Bunga (Brassica oleracea var. Botrytis L.)

2021 ◽  
Vol 2 (1) ◽  
pp. 32
Author(s):  
Irpan Gunawan ◽  
Atak Tauhid ◽  
Isna Tustiyani
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Affected Plant ◽  
Two Factors ◽  
Number Of Leaves ◽  
Npk Fertilizer

<p><em>Cauliflower is one of the vegetables for consumers. The demand for cauliflower was rising so it must be scaled up with fertilizer. The purpose of this study was to study the effect of chicken manure and NPK fertilizer on the growth and yield of cauliflower. The study was conducted in Sukasenang Village, Banyuresmi Sub-district, Garut Regency from July to August 2019. The study used a Randomized Block Design (RBD) in two factors each of the 3 rates with 2 replications. The first factor was the rates of chicken manure which consisted of 0, 10 and 20 tons ha<sup>-1</sup>; the second factor was NPK fertilizer which consists of 0, 100 and 200 kg ha<sup>-1</sup>. The parameter of this research was plant height, number of leaves, leaf area, weight and diameter crud. The results showed that there was no interaction between the chicken manure and NPK fertilizer. The treatment of 20 tons ha<sup>-1</sup> chicken manure affected the variable plant height, the number of leaves and leaf area. The rates of 200 kg ha<sup>-1</sup> NPK fertilizer had affected plant height, number of leaves, weight and diameter crud.</em></p>

scholarly journals Kompetisi beberapa jenis gulma terhadap pertumbuhan awal beberapa varietas tanaman tebu (Saccharum officinarum L.)

2020 ◽  
Vol 1 (1) ◽  
pp. 21
Author(s):  
Dentin Queentiara Moelyaandani ◽  
S Setiyono
Keyword(s):  
Block Design ◽  
Saccharum Officinarum ◽  
Cyperus Rotundus ◽  
Stem Diameter ◽  
Initial Growth ◽  
High Productivity ◽  
Sugarcane Varieties ◽  
Randomized Block Design ◽  
Best Response ◽  
Number Of Leaves

Sugarcane (Sacharum officinarum L.) is a sugar-producing plant and is a food commodity that is needed by the people of Indonesia. National sugar demands are increasing every year. The low productivity of sugarcane is due to the competition of weeds which can reduce sugarcane production. To achieve high productivity, it is necessary to pay attention to the varieties used because they require certain conditions in their management. The purpose of this study was to determine the effect of varieties and types of weeds on the initial growth of sugarcane. The study was conducted from September 2018 to December 2018. The study used factorial Randomized Block Design (RBD) with two factors and four replications. The first factor consists of 4 sugarcane varieties, namely: Bululawang (V1), Red HW (V2), VMC (V3) and PS 862 (V4). The second factor type of weed consists of 2 types, namely Cyperus rotundus (N1) and Amaranthus spinosus L. (N2). The results showed that (1) There was interaction between the varieties (V) and the weed types (N) in stem diameter parameters and number of tillers, the treatment V4N1 gives the best response to stem diameter 1,31 cm and 4,25 number of tillers; (2) The treatment of varieties (V) gives affects to stem diameter and number of leaves, the treatment V4 gives the best response 5,38 to number of leaves; (3) Types of thorn spinach weeds can reduce the initial growth of sugarcane. Keywords: Varieties; weed; sugarcane

scholarly journals The effect of leaf area reduction on corn plants during the reproduction phase

Revista CERES ◽  
2011 ◽  
Vol 58 (4) ◽  
pp. 413-418 ◽  
Author(s):  
Karen Rodrigues de Toledo Alvim ◽  
Césio Humberto de Brito ◽  
Afonso Maria Brandão ◽  
Luiz Savelli Gomes ◽  
Maria Teresa Gomes Lopes
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Block Design ◽  
Plant Leaves ◽  
Spike Density ◽  
Area Reduction ◽  
Randomized Block Design ◽  
Minas Gerais State ◽  
Corn Plants ◽  
Root Resistance

Reduction in leaf area in corn plants during reproduction changes physiological metabolism and consequently the accumulation of dry matter in grains. The aim of this work was to study changes in agronomic characteristics caused by defoliation in corn during the reproduction phase. The experiment was carried out in Uberlândia, Minas Gerais state, in the agricultural year 2007/2008. The experiment was arranged in a randomized block design, consisting of seven treatments: control without defoliation, removal of two apical leaves, removal of four apical leaves, removal of all leaves above spike, removal of four intermediate leaves, removal of all leaves below spike, and removal of all plant leaves, with five repetitions. The genotype used for the evaluations was hybrid NB 7376. Defoliation was carried out when plants were at the growth stage R2. The variables assessed were: yield, density of spikes and corncobs, root resistance and stem integrity. When all leaves above the spike were removed, grain yield was reduced by 20%. Corncob density, stem integrity and root resistance to uprooting were also affected. Spike density was only affected when all plant leaves were removed. The leaf area remaining physiologically active above the spike was found to be most efficient in terms of grain yield.

scholarly journals Tanggap Pertumbuhan Bibit Tebu Merah (Saccharum officinarum L.) Asal Bud Set terhadap Pemangkasan dan Frekuensi Penyiraman

2018 ◽  
Vol 5 (1) ◽  
pp. 136-146
Author(s):  
Supriadi Hartanto ◽  
Irsal ◽  
Asil Barus
Keyword(s):  
Block Design ◽  
Saccharum Officinarum ◽  
Research Field ◽  
Stem Diameter ◽  
Randomized Block Design ◽  
Bud Set ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Plant Stem ◽  
Weight Pruning

This research was conducted to determine the growth of red sugarcane seedling on pruning and frequency of watering. This research was conducted in the research field of Faculty of Agriculture University of Sumatera Utara (± 25 m asl) from June-October 2017 using Factorial Randomized Block Design with three replications. The first factor was pruning (control, 1, and 2 months/plant) as well as the second factor was the frequency of watering (1, 3, 5, and 7 days/plants). The variable observed were plant height, a number of leaves, stem diameter, a number of the tiller, shoot wet weight, root wet weight, and shoot-root ratio. The results showed that the frequency of watering treatment had a significant effect on the number of a leaf (4,6,8,10 and 12 weeks after plant), stem diameter (4,6,8,10 and 12 weeks after plant), shoot wet weight, and root wet weight. Pruning treatment had no significant effect on all variables observed. The interaction of both has no significant effect on all variables observed.

scholarly journals Soil uses in the sugarcane fallow period to improve chemical and physical properties of two latosols (oxisols)

2012 ◽  
Vol 36 (1) ◽  
pp. 283-294 ◽  
Author(s):  
Carolina Fernandes ◽  
José Eduardo Corá ◽  
Adolfo Valente Marcelo
Keyword(s):  
Physical Properties ◽  
Soil Aggregates ◽  
Block Design ◽  
Chemical Properties ◽  
Aggregate Stability ◽  
Fallow Period ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Sunn Hemp ◽  
In The Beginning

Sugarcane production should be integrated with crop diversification with a view to competitive and sustainable results in economic, social and environmental aspects. The purpose of this study was to assess the influence of different soil uses during the sugarcane fallow period on the chemical and physical properties of eutroferric Red Latosol - LVef (Oxisol) and Acric Latosol - LVw (Acric Oxisol), in Jaboticabal, São Paulo State, Brazil (21º14'05'' S, 48º17'09'' W, 600 m asl). A randomized block design was used with five replications and four treatments, consisting of different soil uses (crops) in the sugarcane fallow period: soybean only, soybean/fallow/soybean, soybean/millet/soybean, and soybean/sunn hemp/soybean. After two soybean crops, the LVef chemical properties remained at intermediate to high levels; while those of the LVw, classified as intermediate to high in the beginning, increased to high levels. Thus, the different soil uses during the sugarcane fallow period allowed the maintenance of LVef fertility levels and the improvement of those of the LVw. Two soybean crops increased macroporosity in the 0.0-0.1 m layer of the LVef; reduced soil aggregates in the 0.0-0.1 and 0.1-0.2 m layers of both soils, and reduced aggregate stability in these two layers of the LVw. Planting pearl millet or sunn hemp between the two soybean growing seasons promoted the formation of larger soil aggregates in the surface layer (0.0-0.1 m) of the LVw.

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