scholarly journals Increase in irrigated wheat yield in north-west Mexico from 1960 to 2019: Unravelling the negative relationship to minimum temperature

2022 ◽  
Vol 275 ◽  
pp. 108331
Author(s):  
Tony Fischer ◽  
Nora Honsdorf ◽  
Julianne Lilley ◽  
Suchismita Mondal ◽  
Ivan Ortiz Monasterio ◽  
...  
Keyword(s):  
Minimum Temperature ◽  
Wheat Yield ◽  
Negative Relationship ◽  
North West ◽  
West Mexico ◽  
Irrigated Wheat

Indirect selection for grain yield in spring bread wheat in diverse nurseries worldwide using parameters locally determined in north-west Mexico

2011 ◽  
Vol 150 (1) ◽  
pp. 23-43 ◽  
Author(s):  
M. GUTIERREZ ◽  
M. P. REYNOLDS ◽  
W. R. RAUN ◽  
M. L. STONE ◽  
A. R. KLATT
Keyword(s):  
High Temperature ◽  
Grain Yield ◽  
Wheat Yield ◽  
Spring Bread Wheat ◽  
Yield Performance ◽  
North West ◽  
Yield Trial ◽  
West Mexico ◽  
Wheat Lines ◽  
Yield Trials

SUMMARYThe relationships of normalized water index three (NWI-3) and canopy temperature (CT) with grain yield in north-west Mexico were determined in a set of wheat lines planted in multi-location yield trials. Advanced wheat lines developed by The International Maize and Wheat Improvement Centre (CIMMYT) were included and tested internationally in the trials including the 24th Elite Spring Wheat Yield Trial (ESWYT), the 11th Semi-Arid Wheat Yield Trial (SAWYT) and the 11th High Temperature Wheat Yield Trial (HTWYT). In north-west Mexico, NWI-3, CT and grain yield were determined in three growing seasons (2006, 2007 and 2008) and three environments (well irrigated, water-stressed and high-temperature), while grain yield was measured at international locations in the same advanced lines of the 24th ESWYT, the 11th SAWYT and the 11th HTWYT . The CIMMYT database was used to obtain grain yield from worldwide nurseries. The mean grain yield ranged from 0·8 to 12·7 t/ha for the 24th ESWYT (59 international sites), from 0·6 to 8·2 t/ha for the 11th SAWYT (28 international sites) and from 0·4 to 7·5 t/ha for the 11th HTWYT (26 international sites). NWI-3 and CT for the advanced lines in the three yield trials measured in north-west Mexico in distinct environments showed significant associations with the grain yield from a few international locations (0·12–0·23 of sites). Locations from Central Asia and North Africa had the best associations with NWI-3 and CT. The lack of more associations may be due to either an interaction of other factors (low rainfall and limited irrigations), which affected yield performance, or few of the advanced lines were well adapted to local growing conditions at each testing site, or a combination of these factors. The present results indicate that NWI-3 and CT have limited potential to predict yield performance at international sites.

Effect of Hall Tonic Fertilizer on Irrigated Wheat Yield

2002 ◽  
Vol 2 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Asim Muhammad . ◽  
Aslam Khan .
Keyword(s):  
Wheat Yield ◽  
Irrigated Wheat

‘Caribe’ (Cnidoscolus angustidens Torr.), a promising oilseed geophyte from north-west Mexico

1999 ◽  
Vol 41 (3) ◽  
pp. 299-308 ◽  
Author(s):  
José Luis León-de la Luz ◽  
Enrique Troyo-Diéguez ◽  
M.Magdalena Ortega-Nieblas ◽  
Francisco López-Gutiérrez
Keyword(s):  
North West ◽  
West Mexico

scholarly journals Wheat yield in the Cerrado as affected by nitrogen fertilization and inoculation with Azospirillum brasilense

2017 ◽  
Vol 52 (9) ◽  
pp. 794-805 ◽  
Author(s):  
Fernando Shintate Galindo ◽  
Marcelo Carvalho Minhoto Teixeira Filho ◽  
Salatiér Buzetti ◽  
José Mateus Kondo Santini ◽  
Cleiton José Alves ◽  
...  
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Wheat Yield ◽  
Urease Inhibitor ◽  
N Accumulation ◽  
Leaf Chlorophyll ◽  
Spike Number ◽  
Tillage System ◽  
Irrigated Wheat ◽  
N Rates

Abstract: The objective of this work was to evaluate the effect of inoculation with Azospirillum brasilense, associated with N rates and sources, in soil of the Cerrado (Brazilian savanna), on the grain yield of irrigated wheat (Triticum aestivum). The experiment was carried out under a no-tillage system in a Typic Haplustox. The experimental design was randomized complete blocks with four replicates, in a 2x5x2 factorial arrangement: two N sources (urea and urea with NBPT urease inhibitor); five N rates applied as topdressing (0, 50, 100, 150, and 200 kg ha-1); and with or without seed inoculation with A.brasilense. The increase in the N rates positively affected spike length, number of spikelets and of grains per spike, number of spikes per meter, N accumulation in the straw, leaf chlorophyll content, and grain yield of irrigated wheat, regardless of the use of NBPT urease inhibitor with conventional urea. Singly, inoculation with A.brasilense does not affect production components and grain yield, despite the increase in N content in wheat straw. The inoculation with A.brasilense, associated with the application of 140 kg ha-1 N, provides the highest grain yield of irrigated wheat cropped after corn in low-altitude Cerrado.

Soil organic carbon along a geothermal gradient in North-West Canada

2020 ◽  
Author(s):  
Tino Peplau ◽  
Edward Gregorich ◽  
Christopher Poeplau
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Forest Ecosystem ◽  
Hot Springs ◽  
Negative Relationship ◽  
Geothermal Gradient ◽  
Soil Warming ◽  
North West ◽  
Discontinuous Permafrost

<p>Global warming will increase soil microbial activity and thus catalyse the mineralisation of soil organic carbon (SOC). Predicting the dynamics of soil organic carbon in response to warming is crucial but associated with large uncertainties, owing to experimental limitations. Most studies use in-vitro incubation experiments or relatively short-term in-situ soil warming experiments. Long-term observations on the consequences of soil warming on whole-profile SOC are still rare. Here, we used a long-term geothermal gradient in North-West Canada to study effects of warming on quantity and quality of SOC in an aspen forest ecosystem.</p><p>The Takhini hot springs are located within the region of discontinuous permafrost in the southern Yukon Territory, Canada. The springs warm the surrounding soil constantly and lead to a horizontal temperature gradient of approximately 10°C within a radius of 100 meters. As these natural springs heat the ground for centuries and the forest ecosystem surrounding the springs is relatively homogenous, the site provides ideal conditions for observing long-term effects of soil warming on ecosystem properties. Soils were sampled at four different warming intensities to a depth of 80 cm and analysed for their SOC content and further soil properties in different depths. </p><p>For the bulk soil, we found a significant negative relationship between soil temperature and SOC stocks. This confirms that climate change will most likely induce SOC loss and thus a positive climate- carbon cycle feedback loop. The response of five different SOC fractions to warming will also be presented.</p>

scholarly journals Disturbance sources, human predation and reproductive success of seabirds in tropical coastal ecosystems of Sinaloa State, Mexico

2004 ◽  
Vol 14 (3) ◽  
pp. 191-202 ◽  
Author(s):  
A. MUÑOZ DEL VIEJO ◽  
X. VEGA ◽  
M. A. GONZÁLEZ ◽  
J. M. SÁNCHEZ
Keyword(s):  
Reproductive Success ◽  
Sandy Beach ◽  
Coastal Ecosystems ◽  
Economic Activities ◽  
Sula Nebouxii ◽  
North West ◽  
Sterna Antillarum ◽  
West Mexico ◽  
Least Tern ◽  
Human Predation

From March to July 2000, four seabird colonies in coastal ecosystems of Sinaloa, north-west Mexico were visited: on islets, a sandy beach and a long-abandoned salt-panning flat. There were partial and total breeding failures, most of them due to human activity. Amongst colonies of nine species, the breeding success of three was severely affected. All 250 Royal Tern Sterna maxima eggs were taken for direct consumption; 50% (75) of Blue-footed Booby Sula nebouxii chicks were killed for crab (Portunidae) fishing; and in a Least Tern Sterna antillarum colony (97 pairs), 50% failed due to disturbance from a fishing championship. Some of these species have priority status within Mexican and international conservation regulations. Certain aspects of these problems are discussed, and actions are suggested to balance conservation and the development of economic activities.

First Report of Botrytis cinerea Pers. on Salicornia bigelovii Torr. in North-West México

2013 ◽  
Vol 162 (7-8) ◽  
pp. 513-515 ◽  
Author(s):  
Edgar O. Rueda Puente ◽  
Luis G. Hernandez Montiel ◽  
Jaime Holguin Peña ◽  
Bernardo Murillo Amador ◽  
Francisco J. Rivas Santoyo
Keyword(s):  
Botrytis Cinerea ◽  
First Report ◽  
North West ◽  
Salicornia Bigelovii ◽  
West Mexico

Irrigation of Dwarf Wheats in the Yaqui Valley of Mexico

1977 ◽  
Vol 13 (4) ◽  
pp. 353-367 ◽  
Author(s):  
R. A. Fischer ◽  
J. H. Lindt ◽  
A. Glave
Keyword(s):  
Potential Evapotranspiration ◽  
Water Shortage ◽  
Plant Water ◽  
Wheat Cultivars ◽  
Irrigation Regime ◽  
North West ◽  
Yaqui Valley ◽  
Heavy Soil ◽  
West Mexico ◽  
Plant Water Potential

SUMMARYThe response of the latest wheat cultivars to irrigation regimes was studied between 1970 and 1975 in a heavy soil of the Yaqui Valley of north-west Mexico. Yield showed greatest sensitivity to water shortage in the period 65–110 days after seeding (spike emergence around 90 days), due largely to responses in grains/m2. More frequent irrigation increased yields 5–10% over the average of 7 t/ha obtained with the commonly-adopted five irrigation regime. Various irrigation criteria were tested: potential evapotranspiration calculations seemed the most useful. Measurement of leaf permeability (with an air flow porometer) showed more promise than the use of plant water potential (measured with a pressure chamber).

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