Water availability for high yield of soybean cultivars

Considering the hypothesis that soybean cultivars present different yield potential, even under ideal water conditions, this study aimed to identify highly productive soybean cultivars under optimal conditions of soil moisture management. Two experiments were conducted in the 2015/16 and 2016/17 crop seasons in Chapadão do Sul-MS, in a complete In a split-plot arrangement design with four replications. In the first experiment, the plots was composed of six water application frequencies (0, 1, 2, 3, 4, and 5 days); in the second experiment, the primary factor was constituted by six supplementary irrigation levels (0, 25, 50, 75, 100, and 125% of the Crop Evapotranspiration - ETc). In each experiment, subplots was composed of five soybean cultivars. The following variables were evaluated: plant height, insertion of the first pod, hundred grain weight, and grain yield. Regardless of the irrigation management used, soybean cultivars presented different agronomic performance.

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Agronomic aspects of soybean plants subjected to deficit irrigation

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n7p654-659 ◽

2016 ◽

Vol 20 (7) ◽

pp. 654-659 ◽

Cited By ~ 2

Author(s):

Antônia C. Nunes ◽

Francisco M. L. Bezerra ◽

Roberta A. e Silva ◽

José L. C. da Silva Júnior ◽

Flávia B. Gonçalves ◽

...

Keyword(s):

Water Deficit ◽

Deficit Irrigation ◽

Irrigation Management ◽

Vegetative Stage ◽

Crop Evapotranspiration ◽

Phenological Stages ◽

Soybean Cultivars ◽

Plant Stem ◽

Soybean Plants ◽

Irrigation Levels

ABSTRACT This study aimed to evaluate the behavior of soybean plants subjected to irrigation management with controlled water deficits in different phenological stages. The research was conducted in an experimental area of the Federal University of Tocantins (UFT), in Palmas-TO, Brazil. The experimental design was randomized blocks with four replicates, and treatments arranged in a split-plot scheme. The plots consisted of irrigation levels that induced plants to water deficit in the vegetative stage, reproductive stage and throughout the entire cycle, based on potential crop evapotranspiration (ETpc). The subplots corresponded to two soybean cultivars (M9144RR and TMG1288RR). The following agronomic variables were evaluated: days until flowering, days until maturation, plant height, first pod height, number of pods per plant, stem diameter, leaf area and yield. Irrigation management with moderate water deficit, 50% of ETpc, in the vegetative stage, promoted the best agronomic characteristics and contributed to increase the yield of the evaluated soybean cultivars, especially M9144RR.

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Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities

Agriculture ◽

10.3390/agriculture11010069 ◽

2021 ◽

Vol 11 (1) ◽

pp. 69

Author(s):

Cailong Xu ◽

Ruidong Li ◽

Wenwen Song ◽

Tingting Wu ◽

Shi Sun ◽

...

Keyword(s):

Key Management ◽

Management Practices ◽

Yield Component ◽

Planting Density ◽

Yield Potential ◽

High Yield ◽

Branch Number ◽

Soybean Yield ◽

Soybean Cultivars ◽

Pod Number

Increasing planting density is one of the key management practices to enhance soybean yield. A 2-yr field experiment was conducted in 2018 and 2019 including six planting densities and two soybean cultivars to determine the effects of planting density on branch number and yield, and analyze the contribution of branches to yield. The yield of ZZXA12938 was 4389 kg ha−1, which was significantly higher than that of ZH13 (+22.4%). In combination with planting year and cultivar, the soybean yield increased significantly by 16.2%, 31.4%, 41.4%, and 46.7% for every increase in density of 45,000 plants ha−1. Yield will not increase when planting density exceeds 315,000 plants ha−1. A correlation analysis showed that pod number per plant increased with the increased branch number, while pod number per unit area decreased; thus, soybean yield decreased. With the increase of branch number, the branch contribution to yield increased first, and then plateaued. ZH13 could produce a high yield under a lower planting density due to more branches, while ZZXA12938 had a higher yield potential under a higher planting density due to the smaller branch number and higher tolerance to close planting. Therefore, seed yield can be increased by selecting cultivars with a little branching capacity under moderately close planting.

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Performance of processing tomatoes under different supply levels of crop evapotranspiration

Horticultura Brasileira ◽

10.1590/s0102-053620180303 ◽

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.

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Carrot yield and water-use efficiency under different mulching, organic fertilization and irrigation levels

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v22n7p445-450 ◽

2018 ◽

Vol 22 (7) ◽

pp. 445-450

Author(s):

Daniel F. de Carvalho ◽

Daniela P. Gomes ◽

Dionizio H. de Oliveira Neto ◽

José G. M. Guerra ◽

Janaína R. C. Rouws ◽

...

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Irrigation Management ◽

Gliricidia Sepium ◽

Time Domain Reflectometry ◽

Crop Evapotranspiration ◽

Organic Fertilization ◽

Use Efficiency ◽

Irrigation Levels ◽

Water Depths

ABSTRACT This study was carried out to evaluate the contributions to the optimization of water use in a carrot crop under different forms of mulch using Gliricidia sepium, fertilization with castor bean cakes and irrigation water depths. The experiment was conducted in Seropédica, RJ, Brazil (22º 46’ S and 43º 41’ W), from June to September 2010. The experiment was conducted using a split-split-plot scheme (5 x 3 x 2), with four replicates. The five plots had irrigation depths corresponding to 0, 43, 72, 100 and 120% of crop evapotranspiration (ETc); the three subplots contained the different forms of mulch (whole leaves (WL) and chopped leaves and branches (CLB)) and the absence of mulch (AM); and the two sub-subplots contained either the presence (PF) or absence of fertilization (AF). Using time domain reflectometry (TDR) in the irrigation management, water depths ranging from 67.8 to 285.5 mm were applied. The use of mulch in association with fertilization led to higher yields and water-use efficiency (WUE) of the carrot plants, and the mulch composed of WL performed best. The application of irrigation depths corresponding to 97% of ETc promoted the highest carrot yields, although the highest values of WUE were observed, with irrigation depths corresponding to a range from 51 to 68% of ETc.

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DISTRIBUIÇÃO DO SISTEMA RADICULAR DE PLANTAS JOVENS DE LIMA ÁCIDA ‘TAHITI’ SOB DIFERENTES NÍVEIS DE IRRIGAÇÃO

Irriga ◽

10.15809/irriga.2004v9n3p270-281 ◽

2004 ◽

Vol 9 (3) ◽

pp. 270-281 ◽

Cited By ~ 3

Author(s):

José Alves Júnior ◽

Mateus Dos Santos Lourenção ◽

Tonny José Araújo da Silva ◽

Cláudio Ricardo da Silva ◽

Marcos Vinícius Folegatti

Keyword(s):

Root System ◽

Root Distribution ◽

Irrigation Management ◽

Horizontal Distribution ◽

Crop Evapotranspiration ◽

Citrus Latifolia ◽

Citrus Root ◽

Acid Lime ◽

Irrigation Levels ◽

Different Levels

DISTRIBUIÇÃO DO SISTEMA RADICULAR DE PLANTAS JOVENS DE LIMA ÁCIDA ‘TAHITI’ SOB DIFERENTES NÍVEIS DE IRRIGAÇÃO José Alves Júnior; Mateus dos Santos Lourenção; Tonny José Araújo da Silva; Cláudio Ricardo da Silva; Marcos Vinícius FolegattiDepartamento de Engenharia Rural, Escola Superior de Agricultura “ Luiz de Queiroz”, Universidade de São Paulo, Piracicaba-SP, [email protected] 1 RESUMO O objetivo deste estudo foi avaliar a distribuição do sistema radicular de lima ácida ‘Tahiti’ (Citrus latifolia Tan), irrigada por gotejamento, sob o efeito de diferentes lâminas de irrigação em condições de campo. O delineamento experimental foi inteiramente casualizado em duas repetições com arranjo fatorial de cinco lâminas de irrigação (0%; 25%; 50%; 75% e 100% da evapotranspiração da cultura medida em um lisímetro de pesagem), duas profundidades (0,0-0,3 e 0,3-0,6 m) e quatro pontos de amostragem (0,3; 0,6; 0,9 e 1,2 m de distância do tronco). A análise foi realizada em um pomar com 30 meses de idade e 17 meses de fornecimento das diferentes lâminas de irrigação. Os resultados mostraram que não houve diferenças entre as lâminas quanto à distribuição das raízes em profundidade, concentrando-se na camada de 0,0-0,3m. Entretanto, a distribuição horizontal foi maior nos níveis baixos (0%; 25% e 50%) do que nos maiores níveis (75% e 100%). Nas plantas irrigadas com 75% e 100% houve concentração das raízes até 0,6 m, indicando que o déficit hídrico induziu o crescimento horizontal das raízes. UNITERMOS: citros; raiz; manejo da irrigação; Citrus latifolia Tan ALVES JUNIOR, J.; LOURENÇÃO, M.S.; SILVA, T.J.A.; SILVA, C.R.; FOLEGATTI, M.V. ROOT SYSTEM DISTRIBUTION OF YOUNG ‘TAHITI’ ACID LIME TREES UNDER DIFFERENT LEVELS OF IRRIGATION 2 ABSTRACT The aim of this study was to evaluate the root system distribution of young ‘Tahiti’ (Citrus latifolia Tan) acid lime irrigated by drip system under field conditions. The experiment was carried out in a factorial design with two replications that consisted of five levels of irrigation (0%, 25%, 50%, 75% and 100% of crop evapotranspiration measured by a weighing lysimeter) and two depths (0.,0-0.3 and 0.3-0.6 m) as well as four horizontal sample points (0.3; 0.6; 0.9 and 1.2 m of distance from trunk). The analysis was carried out in a 30-month-old orchard and 17 months after the beginning of irrigation levels. The results showed that there were no differences in root distribution as to depths, most of them at 0.0-0.3m. However, the horizontal distribution was bigger at lower levels (0, 25 and 50%) than in the highest levels (75 and 100%). In the latter, root concentration reached up to 0.6m, indicating that water stress induced the root growth horizontally KEYWORDS: citrus; root; irrigation management; Citrus latifolia Tan

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Effect of Soybean Cultivars Moderately Resistant to Soybean Cyst Nematode on SCN Populations and Yield

Plant Health Progress ◽

10.1094/php-2008-0618-03-rs ◽

2008 ◽

Vol 9 (1) ◽

pp. 14 ◽

Cited By ~ 1

Author(s):

Eric A. Adee ◽

Martin L. Johnson ◽

Terry L. Niblack

Keyword(s):

Soybean Cyst Nematode ◽

Yield Loss ◽

Cyst Nematode ◽

Yield Potential ◽

High Yield ◽

Nematode Reproduction ◽

Resistant Cultivars ◽

Soybean Cultivars ◽

Moderate Resistance ◽

Moderately Resistant

Spread of soybean cyst nematode Heterodera glycines (SCN) to much of the soybean (Glycine max) growing region in the Midwest has created a persistent and significant annual yield loss for soybean. Host resistance has been the primary means of reducing yield loss to SCN. It is not known how moderately resistant cultivars fit into the management of SCN. Moderately resistant cultivars can have high yield potential, but nematode reproduction is greater than on resistant cultivars. Moderate resistance is defined by a SCN female index (FI) of 10 to 29 in standardized tests, whereas cultivars with an FI < 10 are considered resistant. Two each of SCN-resistant, moderately resistant, and susceptible (FI > 60) cultivars were planted in the same plots for two soybean crops in annual rotation with corn. The SCN population was reduced 80 and 54% by resistant and moderately resistant cultivars, respectively, and increased 189% by the susceptible. Yields of the resistant and moderately resistant were 8.2 and 11.8 bu/acre better, respectively, than for the susceptible. All plots were planted to a susceptible cultivar in the final year of the study, and demonstrated there was a carry-over effect from previous cultivars. Following resistant and moderately resistant cultivars, yields of the susceptible were 6.6 and 4.3 bu/acre above following susceptible cultivars. This study showed that moderately resistant soybean cultivars can be an effective tool for improving profitability of soybean. Accepted for publication 9 April 2008. Published 18 June 2008.

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FloRunTM ‘331’ Peanut Variety

EDIS ◽

10.32473/edis-ag42-2019 ◽

2019 ◽

Vol 2019 (1) ◽

Author(s):

Barry L. Tillman

Keyword(s):

Seed Size ◽

Growth Habit ◽

Yield Potential ◽

High Yield ◽

University Of Florida ◽

High Oleic ◽

Central Stem ◽

Research And Education ◽

The University ◽

High Yield Potential

FloRunTM ‘331’ peanut variety was developed by the University of Florida, Institute of Food and Agricultural Sciences, North Florida Research and Education Center near Marianna, Florida. It was released in 2016 because it combines high yield potential with excellent disease tolerance. FloRunTM ‘331’ has a typical runner growth habit with a semi-prominent central stem and medium green foliage. It has medium runner seed size with high oleic oil chemistry.

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Evaluation of Agronomic Traits of Sponge Gourd (Luffa cylindrica) Inbred Lines Under Plastic House in Thua Thien Hue

HUE UNIVERSITY JOURNAL OF SCIENCE AGRICULTURE AND RURAL DEVELOPMENT ◽

10.26459/hueuni-jard.v126i3e.4213 ◽

2017 ◽

Vol 126 (3E) ◽

Author(s):

Trương Thị Hồng Hải ◽

Nguyễn Thị Diệu Thể ◽

Phan Thu Thảo

Keyword(s):

Skin Color ◽

Agronomic Traits ◽

Block Design ◽

Leaf Traits ◽

Pure Line ◽

Inbred Lines ◽

Fruit Shape ◽

Yield Potential ◽

High Yield ◽

Sponge Gourd

In order to establish the pure line of sponge gourd containing aroma feature, we selected the desirable inbred lines by using a self-pollinating method. The present study was investigated to estimate the morphological traits and fruit quality of 6 sponge gourd inbred lines which generated at 4th generation of an aroma Luffa accession B29 under plastic house conditions. The experiment was conducted in a randomized complete block design (RCBD) with three replications, from May to November in 2016. Five plants per replication were examined. The results indicated that all inbred lines could grow well under plastic house conditions. The inbred lines had the same stem and leaf traits; whereas fruit shape, skin color and fruit veins color were observed differently among inbred lines. The aromatic trait was retained in all inbred lines either before or after cooking. The high yield was found in lines BC1 and BC2 by 10.1 tons/ha and 10.7 tons/ha, respectively. These inbred lines should be examined in open field condition to confirm the presence of aromatic trait and yield potential before completion of the procedures for recognition of new Luffa varieties.

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Coordinated Rice Improvement Project in India: Its Significant Achievements and Future prospects

ORYZA- An International Journal on Rice ◽

10.35709/ory.2019.56.spl.1 ◽

2019 ◽

Vol 56 (Special) ◽

pp. 82-91 ◽

Cited By ~ 1

Author(s):

LV Subba Rao ◽

RA Fiyaz ◽

AK Jukanti ◽

G Padmavathi ◽

J Badri ◽

...

Keyword(s):

Management Practices ◽

Crop Productivity ◽

Yield Potential ◽

High Yield ◽

Improvement Project ◽

Nutritional Security ◽

Food Grain ◽

Rice Improvement ◽

Food And Nutritional Security ◽

Sincere Effort

India is the second largest producer of rice in the world and it is the most important staple food grain. All India Coordinated Rice Improvement Project (AICRIP) was initiated with objective of conducting multi-location trials to identify suitable genotypes of high yield potential along with appropriate crop management practices. Since its inception AICRIP contributed significantly in meeting the growing demand both within and outside India. Significant progress has been achieved through AICRIP in terms of varietal release thereby increasing the crop productivity and also meeting the food and nutritional security. This paper makes a sincere effort in bringing out the significant achievements/milestones achieved under the AICRIP program and also gives a few directions for widening the areas under AICRIP.

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