scholarly journals The Effect of Tillage System and Rimsulfuron Application on Weed Flora, Arbuscular Mycorrhizal (AM) Root Colonization and Yield of Maize (Zea mays L.)

2012 ◽  
Vol 40 (2) ◽  
pp. 73 ◽  
Author(s):  
Dimitrios BILALIS ◽  
Vassilios TRIANTAFYLLIDIS ◽  
Anestis KARKANIS ◽  
Aspasia EFTHIMIADOU ◽  
Ioanna KAKABOUKI
Keyword(s):  
Zea Mays ◽  
Root Growth ◽  
Root Colonization ◽  
Zea Mays L ◽  
Arbuscular Mycorrhizal ◽  
Conventional Tillage ◽  
No Tillage ◽  
Area Index ◽  
Weed Flora ◽  
Tillage System

Field experiments were conducted to determine the effects of tillage system and rimsulfuron application on weed flora and growth of maize (Zea mays L. Mitic F1) at a site with no history of pesticide use for the last 5 years. A randomized complete block design was employed with three replicates per treatment (conventional tillage without rimsulfuron application (control), no-tillage with rimsulfuron application (NT+Rim) and conventional tillage with rimsulfuron application (CT+Rim)). The lowest leaf area index, dry weight and yield of maize were recorded in NT+Rim plots. In addition, the highest soil bulk density was determined in NT+Rim plots. Moreover, the rimsulfuron application resulted in significant reduction in the root growth and arbuscular mycorrhizal (AM) colonization. The lowest root biomass, root length density, root surface and AM root colonization was found in CT+Rim plots. The lowest weed number and biomass was also observed at CT+Rim plots. Sustainability yield index (SYI) shown that the maize crop is more stable under conventional tillage compared with no-tillage. Our results indicated that root growth was reduced significant by rimsulfuron application but statistically significant lower maize yield was obtained in no-tillage system.

scholarly journals Intercepted solar radiation by maize crops subjected to different tillage systems and water availability levels

2010 ◽  
Vol 45 (12) ◽  
pp. 1331-1341 ◽  
Author(s):  
Homero Bergamaschi ◽  
Genei Antonio Dalmago ◽  
João Ito Bergonci ◽  
Cleusa Adriane Menegassi Bianchi Krüger ◽  
Bruna Maria Machado Heckler ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Leaf Area Index ◽  
Extinction Coefficient ◽  
Water Availability ◽  
Conventional Tillage ◽  
No Tillage ◽  
Tillage Systems ◽  
Area Index ◽  
Tillage System ◽  
Crop Cycle

The objective of this work was to evaluate changes in the photosynthetic photon flux density (PPFD) interception efficiency and PPFD extinction coefficient for maize crop subjected to different soil tillage systems and water availability levels. Crops were subjected to no-tillage and conventional tillage systems combined with full irrigation and non-irrigation treatments. Continuous measurements of transmitted PPFD on the soil surface and incoming PPFD over the canopy were taken throughout the crop cycle. Leaf area index and soil water potential were also measured during the whole period. Considering a mean value over the maize cycle, intercepted PPFD was higher in the conventional tillage than in the no-tillage system. During the initial stages of plants, intercepted PPFD in the conventional tillage was double the PPFD interception in the no-tillage treatment. However, those differences were reduced up to the maximum leaf area index, close to tasseling stage. The lowest interception of PPFD occurred in the conventional tillage during the reproductive period, as leaf senescence progressed. Over the entire crop cycle, the interception of PPFD by the non-irrigated plants was about 20% lower than by the irrigated plants. The no-tillage system reduced the extinction coefficient for PPFD, which may have allowed a higher penetration of solar radiation into the canopy

scholarly journals Monoculture Maize (Zea mays L.) Cropped Under Conventional Tillage, No-tillage and N Fertilization: (II) Fumonisin Incidence on Kernels

2009 ◽  
Vol 4 (3) ◽  
pp. 69 ◽  
Author(s):  
Adriano Marocco ◽  
Vincenzo Tabaglio ◽  
Amedeo Pietri ◽  
Carolina Gavazzi
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Conventional Tillage ◽  
N Fertilization ◽  
No Tillage

NITROGÊNIO E MOLIBDÊNIO PARA MILHO IRRIGADO EM REGIÃO DE CERRADO DE BAIXA ALTITUDE

2017 ◽  
Vol 15 (3) ◽  
pp. 418
Author(s):  
SHEILA CAIONI ◽  
EDSON LAZARINI ◽  
TIAGO DE LISBOA PARENTE ◽  
RAUL SOBRINHO PIVETTA ◽  
LUIZ GUSTAVO MORETTI DE SOUZA
Keyword(s):  
Zea Mays ◽  
Nitrate Reductase ◽  
Nitrogen Fertilization ◽  
Zea Mays L ◽  
No Tillage ◽  
Mato Grosso ◽  
Brazilian Savannah ◽  
Tillage System ◽  
N Rates ◽  
Mato Grosso Do Sul

RESUMO – A maior parte do nitrogênio (N) é absorvida pela cultura do milho na forma de nitrato (NO3 -), que é reduzido na planta pela ação da enzima nitrato redutase, a qual tem o molibdênio (Mo) como um dos principaisconstituintes. O objetivo deste trabalho foi avaliar doses de N em conjunto com Mo na cultura do milho irrigado, cultivado em sistema plantio direto. O experimento foi desenvolvido no município de Selvíria, MS. O delineamento utilizado foi o de blocos casualizados em parcelas subdivididas com quatro doses de N (0, 90, 135 e 180 kg ha-1) e cinco doses de Mo (0, 10, 20, 30 e 40 g ha-1), com quatro repetições. Foram avaliados atributos morfológicos e produtivos da cultura. A maior produtividade de milho foi obtida com 180 kg ha-1 de N e com 25,6 g ha-1 de Mo.Palavras-chave: adubação nitrogenada, micronutriente, plantio direto, Zea mays L.NITROGEN AND MOLYBDENUM FOR IRRIGATED MAIZE IN THE BRAZILIAN SAVANNAH WITH LOW ALTITUDEABSTRACT – Most of nitrogen (N) is absorbed by maize as nitrate (NO3-), that is reduced in the plant by the actionof the nitrate reductase enzyme, which has molybdenum (Mo) as a major component. The objective of this study wasto test N rates together with Mo for irrigated corn grown in no-tillage system. The experiment was conducted at theSelviria county, Mato Grosso do Sul State. The design was a randomized complete block with split plots, with fournitrogen rates (0, 90, 135 and 180 kg ha-1) and five doses of Mo (0, 10, 20, 30 and 40 g ha-1), with four replications.Morphological and productive attributes of corn crop were evaluated. The highest yield was obtained with 180 kg ha-1N and 25.6 g ha-1 Mo.Keywords – nitrogen fertilization, micronutrient, no-tillage, Zea mays L.

scholarly journals Arbuscular Mycorrhizal Fungi Symbiosis in Durum Wheat (Triticum durum Desf.) under No-tillage and Tillage Practices in a Semiarid Region

2021 ◽  
Author(s):  
Mahieddine Sebbane ◽  
Sonia Labidi ◽  
Miloud Hafsi
Keyword(s):  
Durum Wheat ◽  
Mycorrhizal Fungi ◽  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Conventional Tillage ◽  
Spore Density ◽  
No Tillage ◽  
Tillage Practices ◽  
Triticum Durum Desf ◽  
Colonization Rates

Background: Arbuscular mycorrhizal fungi (AMF) are root symbionts that improve host plant growth and resilience against biotic and abiotic stresses allowing a sustain plant production particularly under harsh conditions. Methods: The objective of this study is to compare the effect of conventional tillage and no-tillage practices on AMF symbiosis with durum wheat (Triticum durum Desf) through the evaluation of root colonization and AMF spore density in the soil of three different sites in a semi-arid region in Algeria. Two sites were conducted under rain-fed conditions and one was irrigated.Result: Mycorrhizal root colonization varied according to the site and the tillage practice, while spore density differed between sites. Spore density was higher in sites under rain-fed conditions suggesting that water deficit stimulate sporulation, while root colonization seems to be limited by drought. No-tillage improved root colonization rates by 54.3% compared to conventional tillage system and this improvement, particularly the arbuscular percentage, was higher under drought conditions. In addition, root colonization rates showed a positive correlation with the organic matter content and pH in the soil and a negative correlation with the available phosphorus in the soil. These results indicate that no-tillage enhance the establishment of AMF symbiosis with durum wheat under semi-arid conditions.

The No‐Tillage System for Corn ( Zea mays L.) 1

1968 ◽  
Vol 60 (1) ◽  
pp. 17-20 ◽  
Author(s):  
J. N. Jones ◽  
J. E. Moody ◽  
G. M. Shear ◽  
W. W. Moschler ◽  
J. H. Lillard
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
No Tillage ◽  
Tillage System

NITROGÊNIO E MOLIBDÊNIO PARA MILHO IRRIGADO EM REGIÃO DE CERRADO DE BAIXA ALTITUDE

2016 ◽  
Vol 15 (3) ◽  
pp. 418
Author(s):  
SHEILA CAIONI ◽  
EDSON LAZARINI ◽  
TIAGO DE LISBOA PARENTE ◽  
RAUL SOBRINHO PIVETTA ◽  
LUIZ GUSTAVO MORETTI DE SOUZA
Keyword(s):  
Zea Mays ◽  
Nitrogen Fertilization ◽  
Zea Mays L ◽  
No Tillage ◽  
Mato Grosso ◽  
Brazilian Savannah ◽  
Tillage System ◽  
N Rates ◽  
Nitrogen Rates ◽  
Mato Grosso Do Sul

RESUMO – A maior parte do nitrogênio (N) é absorvida pela cultura do milho na forma de nitrato (NO3 -), que é reduzido na planta pela ação da enzima nitrato redutase, a qual tem o molibdênio (Mo) como um dos principais constituintes. O objetivo deste trabalho foi avaliar doses de N em conjunto com Mo na cultura do milho irrigado, cultivado em sistema plantio direto. O experimento foi desenvolvido no município de Selvíria, MS. O delineamento utilizado foi o de blocos casualizados em parcelas subdivididas com quatro doses de N (0, 90, 135 e 180 kg ha-1) e cinco doses de Mo (0, 10, 20, 30 e 40 g ha-1), com quatro repetições. Foram avaliados atributos morfológicos e produtivos da cultura. A maior produtividade de milho foi obtida com 180 kg ha-1 de N e com 25,6 g ha-1 de Mo.Palavras-chave: adubação nitrogenada, micronutriente, plantio direto, Zea mays L.NITROGEN AND MOLYBDENUM FOR IRRIGATED MAIZE IN THE BRAZILIAN SAVANNAH WITH LOW ALTITUDEABSTRACT – Most of nitrogen (N) is absorbed by maize as nitrate (NO3 -), that is reduced in the plant by the action of the nitrate reductase enzyme, which has molybdenum (Mo) as a major component. The objective of this study was to test N rates together with Mo for irrigated corn grown in no-tillage system. The experiment was conducted at the Selviria county, Mato Grosso do Sul State. The design was a randomized complete block with split plots, with four nitrogen rates (0, 90, 135 and 180 kg ha-1) and five doses of Mo (0, 10, 20, 30 and 40 g ha-1), with four replications. Morphological and productive attributes of corn crop were evaluated. The highest yield was obtained with 180 kg ha-1 N and 25.6 g ha-1 Mo.Keywords – nitrogen fertilization, micronutrient, no-tillage, Zea mays L.

scholarly journals Effect of Potassium Deficiency on Root Growth and Nutrient Uptake in Maize (Zea mays L.)

2017 ◽  
Vol 08 (11) ◽  
pp. 1263-1277 ◽  
Author(s):  
Qi Du ◽  
Xinhua Zhao ◽  
Chunji Jiang ◽  
Xiaoguang Wang ◽  
Yi Han ◽  
...  
Keyword(s):  
Zea Mays ◽  
Root Growth ◽  
Nutrient Uptake ◽  
Zea Mays L ◽  
Potassium Deficiency
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