Yield of upland rice cultivars in rainfed and sprinkler-irrigated systems in the Cerrado region of Brazil

2006 ◽  
Vol 46 (11) ◽  
pp. 1515 ◽  
Author(s):  
C. A. C. Crusciol ◽  
R. P. Soratto ◽  
O. Arf ◽  
G. P. Mateus
Keyword(s):  
Grain Yield ◽  
Upland Rice ◽  
Block Design ◽  
Cropping System ◽  
Moisture Stress ◽  
Spikelet Fertility ◽  
Rice Grain ◽  
Rice Cultivars ◽  
Water Deficiency ◽  
Split Plot

In upland rice, the reduced grain yield that originates from the moisture stress period is related to the plant’s tolerance of water deficiency and may vary between cultivars. The purpose of the work presented here was to evaluate the performance of upland rice cultivars in both rainfed and sprinkler-irrigated systems. A split-plot scheme with 8 replicates in a randomised block design was used. The plots were composed of 2 cropping systems (rainfed and sprinkler-irrigated) and the split-plot consisted of 2 cultivars (IAC 201 and Carajás) which are suggested for cultivation in upland ecosystems. Carajás had a greater number of panicles per square metre, higher spikelet fertility and grain mass, and, consequently, a higher grain yield than IAC 201 regardless of cropping system. IAC 201 was more sensitive to water deficiency than Carajás. Sprinkler irrigation improved spikelet fertility, grain mass and upland rice grain yield. Even when cultivars with a higher tolerance of water deficiency are used, a sprinkler-irrigated system may be a viable method to increase upland rice yield throughout most of the Brazilian Cerrado.

scholarly journals Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname

2017 ◽  
Vol 47 (3) ◽  
pp. 185-194 ◽  
Author(s):  
Adriano Stephan NASCENTE ◽  
Ruby KROMOCARDI
Keyword(s):  
Grain Yield ◽  
Management Practices ◽  
Upland Rice ◽  
Block Design ◽  
Field Trials ◽  
Application Rate ◽  
Rice Grain ◽  
Rice Varieties ◽  
Local Conditions ◽  
Randomized Block Design

ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.

scholarly journals Grain yield and termite damage in rice by compaction on the furrow and seed treatment

2016 ◽  
Vol 51 (11) ◽  
pp. 1813-1820 ◽  
Author(s):  
Veneraldo Pinheiro ◽  
◽  
Luís Fernando Stone ◽  
José Alexandre Freitas Barrigossi ◽  
Adriano Stephan Nascente
Keyword(s):  
Grain Yield ◽  
Soil Compaction ◽  
Seed Treatment ◽  
Upland Rice ◽  
Block Design ◽  
Compaction Pressure ◽  
Rice Grain ◽  
No Tillage ◽  
Seed Treatments ◽  
Tillage System

Abstract The objective of this work was to determine the effects of soil compaction pressure on the sowing furrow and of seed treatments with insecticides on grain yield and on termite damage in upland rice plants under no-tillage, in the Center West region of Brazil. Three experiments were carried out, consisting of five seed treatments combined with three (first experiment) or four (second and third experiments) compaction pressures in a randomized complete block design, in a factorial arrangement. The seed treatments were: T0, without treatment; T1, imidacloprid+thiodicarb; T2, thiamethoxam; T3, carbofuran; and T4, fipronil+pyraclostrobin+thiophanate-methyl. The compaction pressures applied were: 25, 42, and 268 kPa, in the first experiment; and these same pressures plus 126 kPa in the second and third experiments. Seed treatment was effective in increasing rice grain yield, from 1,753 to 4,141 kg ha-1, especially in the lowest compaction pressure of 25 kPa. Soil compaction around 180 kPa in the sowing furrow results in higher rice grain yield and in fewer stems killed by termites. The use of soil compaction on the sowing furrow with seed treatment significantly increases rice grain yield under a no-tillage system.

Effect of alley plants species and plantain cultivars on yield of ita 331 upland rice in Umudike southern Nigeria

2021 ◽  
Vol 17 (2) ◽  
pp. 1-6
Author(s):  
A.I. Onyenso ◽  
K.A. Nwobodo ◽  
L.N. Onyenweaku
Keyword(s):  
Grain Yield ◽  
Alley Cropping ◽  
Upland Rice ◽  
Block Design ◽  
Nutrient Release ◽  
Woody Species ◽  
Rice Grain ◽  
Randomized Complete Block Design ◽  
High Nutrient ◽  
The Many

Alley cropping or hedgerow intercropping is one of the many sub-systems of agroforestry technology. A 5 x 3 factorial experiment in a Randomized Complete Block Design (RCBD) with three replications was used to determine the effect of four alley woody species and three plantain cultivars on the yield of ITA 331 upland rice grain in the 2017 and 2018 farming seasons. The Alley species, plantain  cultivars and Alley species x plantain cultivars treatment interactions showed no significant effects (p>0.05) on ITA 331 upland rice grain yield. Student t-test on the two farming seasons showed significant increase in yield of ITA 331 upland rice grain in 2018 than in 2017. The non-significantly different rice grain yield in the alley species treatment plots could be due to the generally high nutrient release of the decomposed legume-based alley species. Agroforestry combination of alley plants species and plantain cultivars is suitable for ITA 331 upland rice production. Key words: alley cropping, yield, ITA 331 upland rice grain, alley woody species, plantain cultivars

scholarly journals Evapotranspiration and grain yield of upland rice as affected by water deficit

2016 ◽  
Vol 20 (5) ◽  
pp. 441-446 ◽  
Author(s):  
Cleber M. Guimarães ◽  
Luís F. Stone ◽  
Ana C. de L. Silva
Keyword(s):  
Grain Yield ◽  
Upland Rice ◽  
Block Design ◽  
Grain Filling ◽  
Soil Water Storage ◽  
Growth Stages ◽  
Rice Grain ◽  
Randomized Block Design ◽  
The Difference ◽  
Water Treatments

ABSTRACT To achieve an accurate phenotyping for drought tolerance, it is important to control water stress levels and timing. This study aimed to determine water use by upland rice plants during periods of irrigation withholding and its relationship with grain yield in order to increase the efficiency of this phenotyping. Two experiments were carried out in a randomized block design in which six water treatments (irrigation withholding for periods of 2, 4, 6, 8, 10 and 12 days) were compared, with four replicates. In the first experiment, treatments were applied at the R3 stage (panicle exsertion) and, in the second, at the R5 stage (beginning of grain filling). The amount of water evapotranspired was determined by the difference between the soil water storage at the beginning and at the end of irrigation withholding periods, from the surface to 80-cm depth. Evapotranspiration of upland rice from R3 stage was higher compared to that observed from R5 stage, when subjected to similar irrigation withholding periods in both growth stages. Rice grain yield is more sensitive to irrigation withholding imposed from R5 stage than from R3 stage.

scholarly journals Productivity and Economic Performance of NERICA Varieties under Two Harvest Modes and Rainfall Intensities in Uganda

2020 ◽  
pp. 30-40
Author(s):  
M. G. Kaiira ◽  
L. Owere ◽  
F. Kagoda ◽  
M. Elesu
Keyword(s):  
Grain Yield ◽  
Agricultural Research ◽  
Upland Rice ◽  
Block Design ◽  
Growth Period ◽  
Moisture Stress ◽  
Leaf Length ◽  
Rice Varieties ◽  
Design Data ◽  
Yield Attributes

The productivity of upland rice is highly determined by the available soil moisture and nutrients. Droughts highly influence yields especially in the second 30 days growth period. A field experiment was conducted at the Uganda National Agricultural Research Institute, Ikulwe station during 2018B and 2019B seasons to determine the productivity and economic returns of four rice varieties under two harvest modes and rainfall intensities. The treatments included NERICA 1, 4 & 6 and NAMCHE 2 given 80 kg N and 30 kg P ha-1. Treatments were replicated three times under a randomised complete block design.  Data was collected on plant height, leaf number, leaf length, leaf width and number of tillers during vegetative stages in all treatments. The panicles m-2, sink size, panicle filling percentage and grain yields were determined at harvest. All the yield attributes and grain yield reduced during the droughty 2018B relative to the rainy 2019B. On the contrary, the number of tillers reduced in 2019. Correlation coefficient (r) for spikelets per m-2 were significant (>8.0) and positive (0.86) to grain yield during 2018 but were lower (0.13) in 2019. The r values were also positive, but not significant, for panicles m-2 (0.76) and for percent filled panicles (0.23) with respect to grain yield during 2018 and 2019 respectively. NERICA 4 & 6 produced higher grain yield under both moisture stress and high rainfall conditions. The results indicate that NERICA 4 and 6 varieties could be adopted and harvested at 75 days after rice emergence (DAE) for NERICA 4 and at 75 DAE and 90 DAE for NERICA 6 under low (630 mm) rainfall or harvested once at 90 DAE given high (1,500 mm) rainfall to get higher yields and Returns on Investment.

scholarly journals Rice grain yield as affected by subsoiling, compaction on sowing furrow and seed treatment

2016 ◽  
Vol 20 (5) ◽  
pp. 395-400 ◽  
Author(s):  
Veneraldo Pinheiro ◽  
Luís F. Stone ◽  
José A. F. Barrigossi
Keyword(s):  
Grain Yield ◽  
Seed Treatment ◽  
Rice Yield ◽  
Upland Rice ◽  
Block Design ◽  
Rice Grain ◽  
No Tillage ◽  
Seed Treatments ◽  
Randomized Block Design ◽  
Quadratic Response

ABSTRACT This study aimed to determine the effects of subsoiling, compaction on sowing furrow and seed treatments with insecticides on the grain yield of upland rice cultivated under no-tillage. Two experiments were carried out, one in an area with and the other in an area without subsoiling, in which five seed treatments combined with five compaction pressures on the sowing furrow were compared in a randomized block design, in a factorial scheme, with three replicates. The seed treatments were: T0 - without treatment, T1 - imidacloprid + thiodicarb, T2 - thiamethoxam, T3 - carbofuran, and T4 - fipronil + pyraclostrobin + thiophanate methyl. The compaction pressures were: 25, 42, 126, 268 and 366 kPa. Subsoiling positively affected rice yield in the presence of higher compaction pressures on the sowing furrow. Seed treatment was effective at increasing rice grain yield only at the lowest compaction pressures. Rice yield showed quadratic response to compaction on the sowing furrow, with maximum values obtained at pressures ranging from 238.5 to 280.3 kPa.

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).

scholarly journals Yield performance of upland rice cultivars at different rates and times of nitrogen application

2012 ◽  
Vol 36 (2) ◽  
pp. 475-483 ◽  
Author(s):  
José Hildernando Bezerra Barreto ◽  
Ismail Soares ◽  
José Almeida Pereira ◽  
Antonio Marcos Esmeraldo Bezerra ◽  
José Aridiano Lima de Deus
Keyword(s):  
Upland Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
N Fertilization ◽  
Rice Cultivars ◽  
Nitrogen Application ◽  
N Application ◽  
Yield Performance ◽  
Randomized Block Design ◽  
N Rates

Nitrogen is the most important nutrient for rice (Oryza sativa L) yields. This study aimed to evaluate the response of upland rice cultivars to N rate and application times in a randomized block design, in subdivided plots with four replications. The studied factors were five rice cultivars (BRS MG Curinga, BRS Monarca, BRS Pepita, BRS Primavera, and BRS Sertaneja), three application times (100 % at planting, 50 % at planting - 50 % at tillering and 100 % at tillering) and four N rates (0, 50, 100, and 150 kg ha-1). All cultivars responded to increased rates and different times of N application, especially BRS Primavera and BRS Sertaneja, which were the most productive when 50 % N rates were applied at sowing and 50 % at tillering. The response of cultivar BRS Monarca to N fertilization was best when 100 % of the fertilizer was applied at tillering.

scholarly journals Organic Fertilizer Titonia Plus and Micro Nutrients Improved Rice (Oryza sativa L.) Production in Koto Panjang and Koto Tingga, Padang City, West Sumatera, Indonesia

2020 ◽  
Vol 7 (01) ◽  
pp. 22-27
Author(s):  
Nalwida Rozen ◽  
Gusnidar Gusnidar ◽  
Nurhajati Hakim
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Block Design ◽  
Organic Fertilizer ◽  
Chemical Fertilizer ◽  
Rice Grain ◽  
Randomized Block Design ◽  
On Farm

A series of on-farm fi eld experiments were conducted in two locations in Padang, Koto Panjang and Koto Tingga, West Sumatera, Indonesia in 2015. The purpose of the experiment was to establish the formula of organic fertilizer derived from Tithonia supplied with micro nutrients, Zn and Mn, on rice. The experiments were conducted using completely-randomized block design with six treatments and three replications. The treatments were P = Tithonia Organic Fertilizer Plus (TOFP) + 3.0 kg Mn.ha-1, Q = TOFP + 3.0 kg Mn.ha-1+ 3.0 kg Zn.ha-1, R = TOFP + 4.5 kg Mn.ha-1 + 6 kg Zn.ha-1, S= TOFP + 4.5 kg Mn.ha-1+ 9 kg Zn.ha-1, T = TOFP only, U = 100% chemical fertilizer only. Treatment with micro nutrients as addition to TOFP (TOFP+ 3.0 kg Mn.ha-1 and TOFP+ 3.0 kg Mn.ha-1+3.0 kg Zn.ha-1) increased rice grain yield by 80 g per clump.

scholarly journals Effect of number of seedlings hill-1 on the yield and yield contributing characters of short duration Aman rice cultivars

2018 ◽  
Vol 28 (4) ◽  
pp. 279-286
Author(s):  
T Islam ◽  
MA Salam
Keyword(s):  
Economic Analysis ◽  
Grain Yield ◽  
Short Duration ◽  
Block Design ◽  
Rice Cultivars ◽  
Economic Return ◽  
Factor B ◽  
Field Laboratory ◽  
Randomized Complete Block Design ◽  
Effect Of Age

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University (BAU), Mymensingh during the period from July to October 2016 to study the effect of age of seedling on the yield and yield contributing characters of short duration Aman rice cultivars. The study consisted two factor A: Variety- three- i)    BINA dhan7 (V1),   (ii) BRRI dhan56 (V2) and (iii)  BRRI dhan62 (V3); and factor B: Number of seedlings hill-1- (i)   Single seedling  hill-1 (S1), (ii)  Two seedlings  hill-1 (S2) and (iii) Three seedlings  hill-1 (S3). The experiment was laid out in a randomized complete block design with three replications. The highest grain yield was obtained from the cultivar BINA dhan7 which was statistically identical with BRRI dhan56 and this was the consequences of higher number of total and effective tillers hiil-1 and highest number of grains panicle-1. Grain yield was not significantly affected by the number of seedlings hill-1 but numerically the highest grain yield was recorded from single seedling hill-1. From the interaction it is observed that grain yield was not significantly affected by the interaction of cultivar and number of seedlings hill-1. But numerically the highest grain yield was recorded from the interaction of BRRI dhan56 × single seedling hill-1. From the economic analysis it is observed that the highest BCR (1.64) was recorded from single seedling hill-1 in BRRI dhan56 which was close to single seedling hill-1 in BINA dhan7 and the lowest BCR (103) was obtained from two seedlings hill-1 in BRRI dhan62. From the results of the study it may be concluded that BRRI dhan56 with single seedling hill-1 might be cultivated in AEZ-9 for obtaining higher yield and higher economic return in Aman season.Progressive Agriculture 28 (4): 279-286, 2017

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