scholarly journals Agronomic performance of upland rice cultivars in the southern region of the state of Tocantins

2016 ◽  
Vol 37 (4) ◽  
pp. 1699
Author(s):  
Leila Paula Tonello ◽  
Taynar Coelho de Oliveira Tavares ◽  
Ricardo De Oliveira Rocha ◽  
Gil Rodrigues dos Santos ◽  
Sérgio Alves de Sousa ◽  
...  
Keyword(s):  
Grain Yield ◽  
Rice Yield ◽  
Upland Rice ◽  
Regional Growth ◽  
The State ◽  
Southern Region ◽  
Flowering Plant ◽  
Agronomic Performance ◽  
Rice Cultivars ◽  
Cerrado Vegetation

Behavioural assessment of cultivars adapted to climate and soil variations is essential for recommending genetic materials to producers, achieving higher profitability, and, mainly, targeting regional growth. The aim of this study was to evaluate the agronomic performance of upland rice cultivars in different cropping periods and Cerrado vegetation soil in the southern region of the state of Tocantins. The experiments were conducted in a field at the Chaparral Farm and at the Experimental Station of the Federal University of Tocantins in the agricultural years of 2008/2009, 2009/2010, 2010/2011, 2011/2012, and 2012/2013 with cultivars BRS-Bonança, BRS-Primavera, and BRSMG-Conai. A randomized block experimental design was used with four replications in a factorial scheme of 3 × 5, comprising three genotypes and five years. The evaluated characteristics were as follows: number of days to flowering, plant height, weight of hundred grains, and grain yield. The highest upland rice yield was observed in the cropping period of 2012/13, which also had the highest volume and better distribution of rainfall; flowering time was lesser and greater for BRSMG-Conai and BRS-Bonança cultivars, respectively. The BRS-Primavera cultivar showed the highest grain yield in different years in Cerrado soil in the southern region of the state of Tocantins.

scholarly journals Yield and yield component performances of local pigmented upland rice cultivars from East Nusa Tenggara, Indonesia in three locations

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Antonius Ndiwa ◽  
Yosep S. Mau
Keyword(s):  
Drought Tolerance ◽  
Grain Yield ◽  
Upland Rice ◽  
Blast Resistance ◽  
Yield Component ◽  
Agronomic Performance ◽  
Rice Cultivars ◽  
Yield Performance ◽  
Rice Genotype

Abstract. Ndiwa ASS, Mau YS. 2019. Yield and yield component performances of local pigmented upland rice cultivars from East Nusa Tenggara, Indonesia in three locations. Trop Drylands 3: 49-55. Several pigmented upland rice cultivars from East Nusa Tenggara Province have been selected based on their agronomic performance, blast resistance, and drought tolerance traits. This study aimed to further elucidate the selected upland rice cultivars for their yield performance and stability in a multi-location trial in three locations. The results showed the significant effect of rice genotype, location, and interactions between rice genotype and location (GxE) on most observed variables, both in each location and across the three locations. Five genotypes produced average grain yield of ≥ 4.0 t/ha over three locations, i.e., NGR-22, PMK-01, ADN-05, Inpago 7 and Aek Sibundong. These five genotypes were found to produce high and stable grain yield under the three growing environments.

scholarly journals Response of rice cultivars to nitrogen in upland conditions

Revista CERES ◽  
2013 ◽  
Vol 60 (1) ◽  
pp. 86-95 ◽  
Author(s):  
Fábio Luiz Checchio Mingotte ◽  
Renata Kimie Hanashiro ◽  
Domingos Fornasieri Filho
Keyword(s):  
Grain Yield ◽  
Production Systems ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Sprinkler Irrigation ◽  
World Population ◽  
Agronomic Performance ◽  
Rice Cultivars ◽  
Nitrogen Levels ◽  
Upland Conditions

Against the background of a growing world population, rice (Oryza sativa L.) consumption is expected to grow faster than its production. Therefore, an appropriate question would be: how to increase productivity in the short-term? In this respect, it becomes important the implementation of modern agricultural production systems, such as upland rice with supplemental sprinkler irrigation. Additional information is needed to maximize the available resources, with special attention given to research on the use of nitrogen. This study aimed to evaluate the agronomic performance of commercial rice cultivars with different plant characteristics in upland conditions with supplemental sprinkler irrigation, when subjected to nitrogen in topdress application at the R1 stage (panicle differentiation). The experiment was arranged in a randomized block with split plot design, with 65 treatments, consisting of the combination of 13 cultivars in the plots, and five nitrogen levels in the subplots (0, 40, 80, 120 and 160 kg ha-1), with four replications. Genetic variability was detected among rice cultivars and the agronomic performance in response to the applied nitrogen. The topdressing application of nitrogen increases, in general, the production components and grain yield in rice. Cultivars BRS Primavera, Caiapó and IAC 202 stood out for grain yield, followed by Baldo, Carnaroli, BRS Curinga and IAC 500 with lower yields.

scholarly journals Upland rice yield as affected by Brachiaria coverage management

2015 ◽  
Vol 19 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Adriano S. Nascente ◽  
Luís F. Stone ◽  
Cleber M. Guimarães
Keyword(s):  
Grain Yield ◽  
Cover Crop ◽  
Dry Matter ◽  
Rice Yield ◽  
Upland Rice ◽  
Proper Time ◽  
Sowing Date ◽  
Rice Grain ◽  
Brachiaria Ruziziensis ◽  
Tillage System

An important point in no-tillage system is the time between cover crop glyphosate desiccation and rice sowing. This study aimed to verify the effect of Brachiaria ruziziensis management time before rice sowing on rice yield and its components. The experiment was conducted under greenhouse conditions and consisted of four types of B. ruziziensis management: with Brachiaria and with herbicide (WBWH), without Brachiaria shoots and with herbicide (NBWH), without Brachiaria shoots and without herbicide (NBNH), and with Brachiaria and without herbicide (WBNH), at four times: 30, 20, 10, and 0 days, preceding the rice sowing. The amount of B. ruziziensis dry matter increased as the management was done closer to the rice sowing date. The WBWH and WBNH managements (this one causes the lowest rice grain yield) must be done 30 days before rice sowing; while NBWH management must be done ten or more days before rice sowing. On the other hand, NBNH management (this one favors the best rice grain yield) can be done until rice sowing day. Despite some reduction in rice yield caused by the B. ruziziensis management, when it was done at the proper time the rice grain yield was similar to the control (without Brachiaria sowing and without herbicide application).

Cultivar and Weeding Effects on Weeds and Rice Yields in a Degraded Upland Environment of the Coastal Savanna

2011 ◽  
Vol 25 (3) ◽  
pp. 322-329 ◽  
Author(s):  
Amadou Touré ◽  
Jonne Rodenburg ◽  
Kazuki Saito ◽  
Sylvester Oikeh ◽  
Koichi Futakuchi ◽  
...  
Keyword(s):  
West Africa ◽  
Rice Yield ◽  
Upland Rice ◽  
Biomass Accumulation ◽  
Rice Cultivars ◽  
Weed Species ◽  
Weed Growth ◽  
Weed Suppressive Ability ◽  
Rice Yields ◽  
Growing Conditions

Weeds are a major constraint to rice production in labor-limited, upland rice-based systems in West Africa. The effects of weeding regimes and rice cultivars on weed growth and rice yield were investigated at two upland locations (Abomey-Calavi and Niaouli) in the degraded coastal savanna zone of Benin in 2005 and 2006 with below-average rainfall. Four weeding regimes (hoe weeding at 21 d after sowing [DAS], delayed hoe weeding at 31 DAS, hoe weeding at 21 and 42 DAS, and a no weeding control) were the main plot treatments. Cultivars comprising three interspecific upland rice cultivars (NERICA 1, NERICA 2, and NERICA 7) and the parents (Oryza sativaWAB56-104 andO. glaberrimaCG14) were tested in subplots. The most dominant weed species identified were Jamaican crabgrass,Mariscus, and silver spinach. Rice yield was generally low because of drought stress; none of the experiments had a higher mean yield than 1,400 kg ha−1across cultivars. Across cultivars, the best weeding regimes in terms of weed control and rice yields were single weeding at 31 DAS (W31) and double weeding at 21 and 42 DAS (W21+42). Under these weeding regimes, WAB56-104 out-yielded the three NERICA cultivars. CG14 showed the strongest weed suppressive ability (WSA) in Abomey-Calavi but did not have strong WSA in Niaouli because of lower biomass accumulation. WSA of WAB56-104 was similar to that of the three NERICA cultivars. Single weeding at 31 DAS, together with the use of cultivars with good adaptation to unfavorable rice growing conditions, would increase land and labor productivity of upland rice-based systems in West Africa.

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 Grain Yield and Resource Use Efficiencies of Upland and Lowland Rice Cultivars under Aerobic Cultivation

Agronomy ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 591 ◽  
Author(s):  
Liu ◽  
Zhan ◽  
Hussain ◽  
Nie
Keyword(s):  
Grain Yield ◽  
Resource Use ◽  
Upland Rice ◽  
Water Productivity ◽  
Lowland Rice ◽  
Growth Potential ◽  
Yield Potential ◽  
Rice Cultivars ◽  
Panicle Number ◽  
Aerobic Cultivation

Aerobic rice has the potential to replace transplanted flooded rice, as rice cultivation is seriously threatened by environmental and social factors. Although the recently released upland rice cultivars have higher drought tolerance, low yield potential of these cultivars makes them less feasible for high-yielding rice planting regions under aerobic cultivation. In this study, typical lowland rice cultivars (Huanghuazhan and Yangliangyou6) were evaluated for grain yield and resource use efficiencies under aerobic cultivation as compared with upland rice cultivars (Lvhan1 and Hanyou3). Averaged across different years, lowland rice cultivars recorded 26.9%, 14.6%, and 26.6% higher grain yield, water productivity, and nitrogen use efficiency for grain production (NUEg), respectively, as compared with upland cultivars. The higher grain yield of lowland rice cultivars under aerobic cultivation was mainly attributed to the higher aboveground biomass and the spikelet number per panicle, along with a higher harvest index and panicle number per unit area with respect to upland rice cultivars. During the entire growing season in aerobic cultivation, rainfall accounted for 60% to 85% of the total water use, which indicates that lowland rice cultivars could make better use of the rainfall because of a longer growth duration and a higher growth potential. In summary, this study suggests that with appropriate irrigation, lowland rice cultivars could grow well and furnish higher yield than the current upland rice cultivars under aerobic cultivation.

scholarly journals Adaptability and stability of flood-irrigated rice cultivars released to the subtropical region of Brazil

2018 ◽  
Vol 53 (10) ◽  
pp. 1140-1149 ◽  
Author(s):  
Eduardo Anibele Streck ◽  
Ariano Martins de Magalhães Júnior ◽  
Paulo Ricardo Reis Fagundes ◽  
Gabriel Almeida Aguiar ◽  
Paulo Henrique Karling Facchinello ◽  
...  
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Rio Grande ◽  
The State ◽  
High Yield ◽  
Environment Interaction ◽  
Rice Cultivars ◽  
Rio Grande Do Sul ◽  
Whole Grain ◽  
Irrigated Rice

Abstract: The objective of this work was to estimate the effects of genotype x environment interaction and the genetic potential of flood-irrigated rice cultivars, released between 1972 and 2017, for the state of Rio Grande do Sul, Brazil. The experiments were carried out in the field, in all agroclimatic regions of flood-irrigated rice crop in the state, between the 2005/2006 and 2015/2016 crop years, totaling 60 environments (trials), with 1,961 experimental units. Twenty-five cultivars of irrigated rice were evaluated for the traits grain yield, plant height, days to flowering, and whole grain quality after milling. The values of adaptability and stability were estimated with the aid of mixed models. The rice cultivars BRS Pampa, BRS Pampeira, and BRSCIRAD 302 showed simultaneously high-genotypic grain yield, adaptability, stability, good agronomic traits, and good whole-grain yield after milling. 'BRSCIRAD 302' and 'BRS Pampa' show high-yield stability and can be recommended for all rice cultivation regions of Rio Grande do Sul. 'BRS Pampeira' is responsive to environmental improvements and is indicated for high-technology conditions.

scholarly journals Evaluation of Different Nutrient Management Practices in Yield of Different Rice Cultivars in Lamjung District of Nepal

2016 ◽  
Vol 4 (2) ◽  
pp. 223-227
Author(s):  
S. Ranabhat ◽  
L.P. Amgain
Keyword(s):  
Grain Yield ◽  
Management Practices ◽  
Nutrient Management ◽  
Rice Yield ◽  
Block Design ◽  
Rice Cultivars ◽  
Rice Varieties ◽  
Fertilizer Recommendations ◽  
Rice Yields ◽  
Biological Yield

A field experiment was conducted on farmer’s field at two sites of Lamjung district of Nepal viz. Bhotewodar and Sundarbazaar to evaluate the performance of two commonly grown rice varieties viz US-382(hybrid) and Ramdhan (improved) under two nutrient management practices [Nutrient Expert®(NE) rice model recommendation, and government recommendation(GR)].Four replicates of four treatments were arranged in randomized completely block design. Rice varieties responded differently under the different nutrient management practices in terms of plant height, grains per panicle, sterility%, panicle weight, grain yield at 15% moisture, straw yield and harvesting index. The highest grain yield was obtained from NE field of US-382 variety which was followed by GR for US-382, NE for Ramdhan and GR for Ramdhan variety. NE based practices for US-382 variety produced higher biological yield as compared to GR. NE estimated attainable rice yield provided by the software compared with actual rice yield from the trials in farmer’s field and NE-based fertilizer recommendations proved the validity in reaching the yield targets estimated by the software. The observed rice yields recorded in the trials were higher than the NE estimated attainable yields, so NE recommendation for US-382 variety was found better over GR.Int J Appl Sci Biotechnol, Vol 4(2): 223-227

scholarly journals Upland rice agronomic performance in response to different doses and sources of nitrogen

2020 ◽  
Vol 16 (2) ◽  
pp. 96-100
Author(s):  
Tácio Peres da Silva ◽  
Douglas Goulart Castro ◽  
Laís Moretti Tomé ◽  
Marco Renan Félix ◽  
Antônio Rosário Neto ◽  
...  
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Upland Rice ◽  
Block Design ◽  
Agronomic Performance ◽  
Nitrogen Application ◽  
Randomized Complete Block Design ◽  
The University ◽  
Different Doses

The aim of the present study was to evaluate the response of different doses and sources of nitrogen (N) on agronomic characteristics in upland riceas well astheclimaticand environmentalinfluence on nitrogen fertilization results. Theexperiments were conducted in the University of Lavras, during 2015/2016 and 2016/2017 crop seasons, the plots consisted of 4 lines of 3 linear meters, with spacing among rows of 35 cm and a useful plot of 4.2 m2. The experimental design was a randomized complete block design with three replications in a 4x4x 2factorial design. The factor doseconsisted in 0, 50,100 e 200 kg ha-1N and the factor sourcesconsisted in ammonium nitrate, ammonium sulphate, urea and polycote, totaling 16 treatments. The characteristics evaluatedwere plant height, grain yield, grain chalkness, 1000 grainsweight andyield. It was concluded that the addiction of doses and Nsources didnot change the agronomic performanceof the upland rice crop. There is an influence of the environment on the responses of plants to nitrogen application, being observed different results in different cropseasons.

Effect of weather on grain yield of direct seeded upland rice varieties in Jharkhand, India

2017 ◽  
Vol 51 (05) ◽  
Author(s):  
Pragyan Kumari ◽  
P. Vijay Kumar ◽  
Ramesh Kumar ◽  
A. Wadood ◽  
Deepak Anuranjan Tirkey
Keyword(s):  
Grain Yield ◽  
Rice Yield ◽  
Upland Rice ◽  
Negative Relationship ◽  
Grain Filling ◽  
Rice Varieties ◽  
Rainfed Rice ◽  
Sunshine Hours ◽  
Direct Seeded ◽  
Average Minimum Temperature

The study was conducted at Birsa Agricultural University, Ranchi during the years 2009-2013 for understanding the effect of weather variables on the yield of three direct seeded upland rainfed rice varieties viz., Vandana, BVD-109 and BVD-111 in Jharkhand. Correlation and regression methods were used to estimate the impacts of weather on rice yield. Study indicated that temperature, rainfall and sunshine hours have significant effect on the rice yield. Average minimum temperature during sowing to vegetative stage in cv. Vandana and during flowering in BVD-109 and BVD-111 showed significant negative relationship with yield. Rainfall during vegetative and grain filling stage are significantly and positively related with grain yield in all the three rice varieties. The effect of sunshine hours on grain yield of rice was comparatively higher at milk stage than the other phenological stages in all three varieties. However, the effect of sunshine hours on yield is significant during the milk stage in Vandana and BVD-111 only. Multiple regressions using critical weather parameters in critical stages of the three varieties could explain the variability in yield of Vandana, BVD-109 and BVD-111 by 92, 74 and 91 percent, respectively.

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