scholarly journals Irrigated wheat subjected to inoculation with Azospirillum brasilense and nitrogen doses as top-dressing

2017 ◽  
Vol 21 (8) ◽  
pp. 537-542 ◽  
Author(s):  
Cleiton J. Alves ◽  
Orivaldo Arf ◽  
Ane F. Ramos ◽  
Fernando S. Galindo ◽  
Lais M. Nogueira ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Azospirillum Brasilense ◽  
Wheat Cultivar ◽  
Wheat Crop ◽  
Mato Grosso ◽  
Spike Number ◽  
Irrigated Wheat ◽  
Leaf N Content ◽  
Mato Grosso Do Sul

ABSTRACT The use of Azospirillum brasilense in the wheat crop still presents contradictory results; thus, it is necessary to identify ideal conditions to obtain satisfactory results. The objective of this study was to investigate the interaction between Azospirillum brasilense and nitrogen doses in a wheat cultivar, conducted with irrigation in the Cerrado region of Mato Grosso do Sul. The experimental design was randomized blocks with a 4 x 2 factorial scheme, four nitrogen doses (0, 40, 80 and 120 kg ha-1) applied as top-dressing, associated or not with inoculation of wheat seeds with Azospirillum brasilense. The results show that there was no interaction between N and inoculation. The isolated effect of Azospirillum brasilense promotes an increase in plant height and number of grains per spike. Nitrogen doses promotes significant increases in leaf N content, plant height, number of grains per spike, number of spikes per square meter and grain yield. The conditions under which the experiment was conducted favored the development of the crop, not interfering with grain yield due the inoculation with Azospirillum brasilense.

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.

scholarly journals Nutrient Uptake and Yield of Wheat Varieties as Influenced by Foliar Potassium under Drought Condition

2017 ◽  
Vol 50 (2) ◽  
pp. 5-20 ◽  
Author(s):  
T. Shah ◽  
A.Z. Khan ◽  
M. Numan ◽  
W. Ahmad ◽  
M. Zahoor ◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Nutrient Uptake ◽  
Plant Height ◽  
Grain Weight ◽  
Spike Length ◽  
Wheat Crop ◽  
Growth Phases ◽  
Spike Number ◽  
1000 Grain Weight

AbstractWater stress experienced by a wheat crop during growth is recognized to have accumulative effect stated as a decline in total biomass over well water potential. The yield and nutrient uptake performance of two wheat (Triticum aestivumL.) varieties (Pirsabak-2013 and Atta Habib) to foliar feeding of 2% potassium (K) at three various growth phases (Zadoks GS-22, Zadoks GS-60 and Zadoks GS-73) was explored under water restricted environment in a wire house trial at the Agriculture Research Station, Harichand, Charsadda. The target was to find out the preeminent K application stage for enhancement in the drought tolerance potential. Drought stress was generated by suppression of irrigation at the three growth phases and then K was sprayed with the carboxymethyl cellulose as a sticking agent, however Tween-20 was used as a surfactant for foliar spray. Data about several agronomic characters (plant height, spike length, number of spikelets per spike, number of grains per spike, 1000-grain weight and grain yield per plant) of crop were documented via standard techniques. Moreover, at maturity, aboveground nitrogen, phosphorus, K, sodium and calcium uptakes by the crop were determined. The results point out that drought stress at all three acute growth phases unfavorably affected plant height, spike length, number of spikelets per spike, number of grains per spike, 1000-grain weight, grain yield and nutrient uptake of the wheat plant. The exogenous K application under drought stress at all three acute growth phases boosted tolerance of wheat by decreasing noxious nutrient’s uptake and augmenting the yield and yield characters. In this concerns, both varieties exposed undeviating behavior. Extreme enhancement in all the documented yield parameters and nutrients uptake was attained when K was practiced at grain filling stage of both varieties.

scholarly journals Co-inoculation of Rhizobium tropici and Azospirillum brasilense in common beans grown under two irrigation depths

Revista CERES ◽  
2016 ◽  
Vol 63 (2) ◽  
pp. 198-207 ◽  
Author(s):  
Amanda Ribeiro Peres²* ◽  
Ricardo Antonio Ferreira Rodrigues³ ◽  
Orivaldo Arf ◽  
José Roberto Portugal ◽  
Daiene Camila Dias Chaves Corsini
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Field Studies ◽  
Common Beans ◽  
Rhizobium Tropici ◽  
Mato Grosso ◽  
N Supply ◽  
Irrigation Depth ◽  
Second Year ◽  
Mato Grosso Do Sul

ABSTRACT The alternative technique of co-inoculation or mixed inoculation with symbiotic and non-symbiotic bacteria has been studied in leguminous plants. However, there are few field studies with common beans and under the influence of the amount of irrigated water. Thus, the objective of this study was to evaluate the efficiency of inoculation and co-inoculation of common beans with Rhizobium tropici and Azospirillum brasilense under two irrigation depths. The experiment was carried out in the winter of 2012 and 2013, in Selvíria, state of Mato Grosso do Sul. The experimental design was composed of randomized blocks in split-plot scheme with two irrigation depths in the plots (recommended for common beans and 75% of the recommended) and five forms of nitrogen (N) supply in the split-plots (control non-inoculated with 40 kg ha- 1 of N in topdressing, 80 kg ha- 1 of N in topdressing, A. brasilense inoculation with 40 kg ha-1 of N in topdressing, R. tropici inoculation with 40 kg ha-1 of N in topdressing, and co-inoculation of A. brasilense and R. tropici with 40 kg ha- 1 of N in topdressing) with four repetitions. Co-inoculation increased nodulation in the second year of cultivation. None of the evaluated treatments increased the grain yield in relation to non-inoculated control with 40 kg ha-1 of nitrogen in topdressing, which presented average yield of 2,200 kg ha-1. The use of 75% of the recommended irrigation depth provides similar grain yield to the recommended irrigation depth in common beans cropped in winter.

scholarly journals Agronomic performance of transgenic and isogenic corn hybrids in the state of Mato Grosso do Sul1

Revista CERES ◽  
2016 ◽  
Vol 63 (6) ◽  
pp. 796-806
Author(s):  
Wesley Souza Prado ◽  
William Leonello Estevão ◽  
Arthur Kenji Mendes Maeda ◽  
André Carlesso ◽  
Manoel Carlos Gonçalves ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Recombinant Dna ◽  
Block Design ◽  
The State ◽  
Agronomic Performance ◽  
Mato Grosso ◽  
Corn Crop ◽  
Ear Height ◽  
Mato Grosso Do Sul

ABSTRACT Theoretically, isogenic hybrids should not present any differences in their genetic makeup due to recombinant DNA technology. However, these materials may behave differently in relation to adaptability and stability. This study aimed at evaluating the agronomic performance of transgenic corn and their isogenic hybrids in two locations in Mato Grosso do Sul, Brazil. Three isogenic simple hybrids and two transgenic varieties of each hybrid were evaluated. The first and second corn crop of 2013/14 were simultaneously analyzed in Dourados and Caarapó, two locations in the State of Mato Grosso do Sul, totaling four environments x season conditions that were evaluated.. A randomized complete block design with three replicates per location was used, and the treatments were arranged in a 3 × 3 factorial design (three genetically modified and three conventional hybrids), with three replicates per site. Characteristics such as plant height, ear height, male flowers, female flowers, and grain yield were evaluated. The parameters adaptability and stability were estimated using the Eberhart and Russell model. In all environments, transgenic hybrids showed higher average grain yield. Considering the environments, AG 7000, a conventional isogenic hybrid, obtained the highest average grain yield. The most stable and productive hybrids were DKB 390 VT PRO and AG 7000 YG, both transgenic. All assessed hybrids exhibited greater average plant height, ear height, and grain yield in Caarapó during the second corn crop, demonstrating that the environment at that site and time was more favorable.

scholarly journals 𝘈𝘻𝘰𝘴𝘱𝘪𝘳𝘪𝘭𝘭𝘶𝘮 𝘣𝘳𝘢𝘴𝘪𝘭𝘦𝘯𝘴𝘦 ASSOCIATION WITH STIMULATORS ON WHEAT CROP

2020 ◽  
Vol 95 (2) ◽  
pp. 83
Author(s):  
Luiza Durlo ◽  
Thomas Newton Martin ◽  
Alex T. Schonell ◽  
Giovane Matias Burg ◽  
Anderson Da Costa Rossatto ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Azospirillum Brasilense ◽  
Wheat Crop ◽  
Growth Stimulator

The objective of this research was to verify the association of stimulators and biofertilizers with the bacterium Azospirillum brasilense for wheat crop. Two experiments were carried out in which the mode and time of inoculation of A. brasilense bacteria were varied and different associations of growth stimulator and biofertilizer were tested. Number of plants per square meter, number of spikes per square meter, plant height, number of spikelets per plant, number of grains per spike, one thousand grain mass, hectoliter mass, and grain yield were evaluated. The association of A. brasilense with stimulators influenced grain yield. The use of stimulators in the seeds differed from the control in the variable “plant height”, where the inoculated plants presented 2 to 3 cm in relation to the plants without inoculation. The use of A. brasilense associated

scholarly journals Selection of soybean populations for earliness and high grain yield

2020 ◽  
Vol 9 (7) ◽  
pp. e546973816
Author(s):  
Katiane Secco Castro ◽  
Renan Massambani Peres ◽  
Alan Mario Zuffo ◽  
Jorge Gonzalez Aguilera ◽  
Larissa Pereira Ribeiro Teodoro ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Genotypic Variation ◽  
Direct Selection ◽  
Breeding Programs ◽  
Mato Grosso ◽  
Days To Flowering ◽  
Economic Weight ◽  
Mato Grosso Do Sul ◽  
Selection Of

Brazilian breeding programs usually aim at finding genotypes with early cycle and high grain yield. Thus, this study aimed to select early soybean lines with high grain yield for the Cerrado region. The experiment was carried out in the 2017-2018 season, in the Universidade Federal de Mato Grosso do Sul, Campus Chapadão do Sul, and consisted of an augmented blocks design, using 196 lines and ten controls, with five replications for each control. The experiment evaluated the traits plant height, number of days to flowering, and grain yield. After verifying the genetic variability for all traits, two selection methods were evaluated, the direct selection in each trait and the simultaneous selection (to decrease plant height and number of days to flowering and increase grain yield, using the Mulamba and Mock index). The latter considered two scenarios were when establishing the economic weight: the coefficient of genotypic variation (CVg) and arbitrary weights. Direct selection on the variables had unsatisfactory results. The Mulamba and Mock revealed unsatisfactory results when using CVg as the economic weight and satisfactory results when using arbitrary weights.

scholarly journals Adaptability and stability of erect cowpea genotypes via REML/BLUP and GGE Biplot

Bragantia ◽  
2016 ◽  
Vol 75 (3) ◽  
pp. 299-306 ◽  
Author(s):  
Adriano dos Santos ◽  
Gessi Ceccon ◽  
Paulo Eduardo Teodoro ◽  
Agenor Martinho Correa ◽  
Rita de Cássia Félix Alvarez ◽  
...  
Keyword(s):  
Grain Yield ◽  
The State ◽  
Gge Biplot ◽  
Phenotypic Stability ◽  
Ge Interaction ◽  
Mato Grosso ◽  
Mato Grosso Do Sul ◽  
The Ideal

ABSTRACT The objective of this study was to investigate the association between the GGE Biplot and REML/BLUP methods and select cowpea genotypes that meet simultaneously high grain yield, adaptability and stability in the Mato Grosso do Sul environments. The experiments were carried out from February to July 2010, 2011 and 2012 in the municipalities of Dourados, Aquidauana and Chapadão do Sul. The experiments in Chapadão do Sul were conducted only in the years of 2010 and 2011, totaling eight environments. After detecting significant genotypes × environments (GE) interaction, the adaptability and the phenotypic stability of cowpea genotypes were analyzed by GGE Biplot and REML/BLUP methods. These methods were concordant in the identification of the best cowpea genotypes for the State of Mato Grosso do Sul. The BRS- Tumucumaque and BRS-Guariba cultivars are the closest to the ideal in terms of high grain yield and phenotypic stability, being suitable for cultivation in the State.

scholarly journals Soybean-corn succession according to seeding date

2018 ◽  
Vol 53 (1) ◽  
pp. 22-29 ◽  
Author(s):  
Rodrigo Arroyo Garcia ◽  
Gessí Ceccon ◽  
Guilherme Afonso da Silva Sutier ◽  
Anna Luiza Farias dos Santos
Keyword(s):  
Grain Yield ◽  
The State ◽  
Southern Region ◽  
Crop Season ◽  
Mato Grosso ◽  
Growing Seasons ◽  
Seeding Date ◽  
Sowing Dates ◽  
Mato Grosso Do Sul

Abstract: The objective of this work was to evaluate the grain yield of soybean and corn cultivars cropped in succession, in different sowing dates. The experiment was carried out in the municipality of Dourados, in the state of Mato Grosso do Sul, Brazil, during three growing seasons, in the sowing dates: 9/15, 10/1, 10/15, and 11/1 for soybean; and 2/1, 2/15, 3/1, and 3/15 for corn. Although soybean yields are strongly affected by the crop season, sowing between late September and early October results in higher long-term yields. Planting corn in succession in mid-February provides the highest grain yield in the southern region of the state Mato Grosso do Sul; therefore, there is no need for an early soybean sowing in September, in order to ensure corn planting in January. Soybean-corn succession in which soybean is sown in early October and corn in mid-February results in higher total grain yields and reduces the climatic risk associated with these crops in the region.

scholarly journals LOSSES IN WHEAT CROP AS A FUNCTION OF THE WATER CONTENT OF THE GRAINS AT HARVEST

2018 ◽  
Vol 93 (2) ◽  
pp. 138
Author(s):  
Fernando Shintate Galindo ◽  
João Luis Zocoler ◽  
Marcelo Carvalho Minhoto Teixeira Filho ◽  
Salatiér Buzetti ◽  
José Mateus Kondo Santini ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Content ◽  
Mass Number ◽  
Wheat Yield ◽  
Water Levels ◽  
Wheat Crop ◽  
Physiological Maturity ◽  
Spike Number ◽  
Harvest Moisture ◽  
Natural Drying

The objective was to study the harvest point for the wheat crop, associated maximum grain yield and productive components with different harvest moisture and losses on natural drying in the field with different water levels in grain. The treatments consisted of the following crop moisture levels (on wet basis) of the grains: 27.9 (point of full physiological maturity), 22.6; 19.9; 18.1; 15; and 12.9%, evaluating the number of spikelets per spike, number of voids grains, number of grains per spike and per spikelet, percentage of lodging, thousand grain mass, number of ears per meter, hectoliter mass, and yield. The largest wheat yield was obtained with the grain harvest at physiological maturity point, decreasing linearly until natural drying to 13% (on a wet basis).

Detection and estimation of components of genetic variation and genotype × environment interaction in three wheat crosses

1984 ◽  
Vol 103 (3) ◽  
pp. 543-547 ◽  
Author(s):  
S. Singh ◽  
M. S. Dahiya
Keyword(s):  
Genetic Variation ◽  
Grain Yield ◽  
Plant Height ◽  
Environment Interaction ◽  
Gene Effects ◽  
Genotype Environment Interaction ◽  
Additive Component ◽  
Spike Number ◽  
Additive Gene ◽  
1000 Grain Weight

SummaryThe data obtained from 360 progeny families produced by crossing 40 F2 plants from each of three wheat crosses HD 2009 × HD 1949, Raj 821 × WH 147 and NP 876 × HD 1949, to three testers (the testers being the two parents of each original cross and their F1 in each case) were subjected to triple test cross analysis for detecting and estimating additive, dominance and epistatic components of genetic variation and interaction of these components with environment for plant height, spike length, number of tillers per plant, number of spikelets per spike, number of grains per spike, 1000-grain weight, number of days from sowing to heading and to maturity, grain yield per plant and grain yield/above ground dry matter ratio (harvest index). Epistasis was an important element for plant height, number of tillers per plant, number of grains per spike and grain yield per plant in all three crosses. Both the i type and j and l type epistasis were equally important. In general, the magnitude of additive component was larger than that of dominance component. The additive gene effects were more sensitive to environmental change than the dominance gene effects. Similarly, j and l type epistasis was relatively more sensitive to environment than the i type epistasis.

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