scholarly journals Response of CERES-wheat and CROPGRO-urd model (DSSAT model v 4.5) for tarai region of Uttarakhand

MAUSAM ◽  
2021 ◽  
Vol 65 (1) ◽  
pp. 109-114
Author(s):  
NEERAJ KUMAR ◽  
SUMAN KUMAR ◽  
A.S. NAIN
Keyword(s):  
Field Experiments ◽  
Growth And Yield ◽  
Research Centre ◽  
Calibration Model ◽  
Yield Data ◽  
Dssat Model ◽  
Predicted Values ◽  
Level Of Significance ◽  
Irrigation Levels ◽  
Crop Research

The study aimed response of CERES-wheat and CROPGRO-urd model for tarai region of Uttarakhand. Field experiments were conducted at N. E. Borlaug, Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during rabi and kharif seasons 2007 and 2008. CERES-wheat and CROPGRO-urd models version v 4.5 were used in this study. Cultivar specific genotypic coefficients were derived for wheat and urd during calibration. Model validation based on several independent sets of growth and yield data, including different nitrogen and irrigation levels. For all parameters t-test was found non-significant (‘t’ calculated values were smaller than t tabulated values at 5% level of significance), indicating that there were least differences between observed and predicted values. The result obtained with the model demonstrated satisfactorily prediction of phenology, growth and yield and thus it can be used for the prediction of wheat and urd growth as well as yield in this region

Effect of Pyroxasulfone Application Timing and Rate on Soybean

2017 ◽  
Vol 31 (2) ◽  
pp. 202-206 ◽  
Author(s):  
Daniel O. Stephenson ◽  
David C. Blouin ◽  
James L. Griffin ◽  
Randall L. Landry ◽  
Brandi C. Woolam ◽  
...  
Keyword(s):  
Detrimental Effect ◽  
Field Experiments ◽  
Free Field ◽  
Plant Population ◽  
Growth And Yield ◽  
Soybean Plant ◽  
Yield Data ◽  
Application Timing ◽  
Delayed Emergence ◽  
Leaf Necrosis

Weed-free field experiments were conducted to evaluate soybean injury, growth, and yield following PRE or POST pyroxasulfone application. Soybean was injured 1 and 15% following pyroxasulfone PRE and POST application, respectively, 7 d after treatment (DAT). Injury following PRE and POST application was observed as delayed emergence and leaf necrosis and crinkling, respectively. Injury ranged from 0 to 6% following both application timings 14 and 28 DAT. Soybean was injured 5% or less following 60, 120, 180, 240, and 300 g ha−1 of pyroxasulfone. Soybean plant population, height, and yield were not affected by pyroxasulfone application timing. Only 300 g ha−1 of pyroxasulfone reduced soybean plant population to 90% of the nontreated 30 d after PRE. Pyroxasulfone rate did not influence soybean heights and yield. Data indicates that pyroxasulfone can safely be applied to soybean without a detrimental effect on plant growth or yield.

scholarly journals Effect of Phosphorus and Sulphur Application on Growth and Yield Attributes of Mungbean (Vigna radiata L)

2021 ◽  
pp. 105-111
Author(s):  
Kamlesh Kumar Yadav ◽  
Vineet Kumar ◽  
. Raju ◽  
Anuj Kumar ◽  
Vipin Kumar Sagar ◽  
...  
Keyword(s):  
Vigna Radiata ◽  
Growth And Yield ◽  
Research Centre ◽  
Department Of Agriculture ◽  
Yield Attributes ◽  
Fatehgarh Sahib ◽  
And Control ◽  
Pod Length ◽  
Crop Research ◽  
Number Of Branches

A field experiment was conducted during summer season of 2015 at the Crop Research Centre of Department of Agriculture, Mata Gujri College, Sri Fatehgarh Sahib to study Response of phosphorus and sulphur application on Growth and yield attributes of mungbean (Vigna radiata L). The number of plants in meter row length was recorded highest with the application of 40 kg /ha followed by 20 kg S/ha and control. The highest plant height was recorded with the application of 40 kg S/ha which was statistically at par with application of 20 kg S/ha it was significantly superior over the control during all observation stages of crop. However at 30 and 60 DAS, the number of branches per plant recorded maximum with the application of 40 kg P2O5/ha followed by 60 kg P2O5/ha and control. At harvest, the application of 60 kg P2O5/ha recorded highest number of branches per plant but was statistically at par with other levels of phosphorus. The maximum number of grains per pod was recorded with the application of 60 kg P2O5/ha which was statistically at par with 40 kg P2O5/ha. It was found that the pod length was maximum with the application of 40 kg S/ha followed by 20 kg S/ha and control. The maximum grain yield was recorded with the application of 60 kg P2O5/ha which was significantly superior to other treatments.

scholarly journals Field Bio-efficacy and Residue Dynamics of the Fungicide Polyoxin D Zinc Salt 5% SC in Grape (Vitis vinifera)

2021 ◽  
Vol 12 (6) ◽  
pp. 603-610
Author(s):  
Pushpa Deore ◽  
◽  
Sandip Hingmire ◽  
Dattatray Shinde ◽  
Anjali Pudale ◽  
...  
Keyword(s):  
Disease Control ◽  
Untreated Control ◽  
Consumer Satisfaction ◽  
Field Experiments ◽  
Zinc Salt ◽  
Research Centre ◽  
Yield Data ◽  
Chromatography Tandem Mass Spectrometry ◽  
Percent Increase ◽  
Liquid Chromatography Tandem Mass

The field experiments were carried out to evaluate the bio-efficacy and residue dynamics of Polyoxin D Zinc salt 5% SC in grape during 2014–2015 and 2015–2016 at ICAR-National Research Centre for Grapes, Pune. Polyoxin D Zinc salt 5% SC @ 600 ml ha-1 gave the best control of the disease, both in the leaves and bunches with a percent disease control of 56.4 and 75.7 respectively, as compared to untreated control. The percent disease control of the test fungicide Polyoxin D Zinc salt 5% SC @ 600 ml ha-1 was superior to all the triazoles viz. Flusilazole 40 EC, Hexaconazole 5 EC and Myclobutanil 10 WP, used in the study. The yield data reflected a similar trend wherein the maximum percent increase in yield was observed in case of Polyoxin D Zinc salt 5% SC @ 600 ml ha-1 i.e. 57.47 as compared to untreated control. However, all the triazoles manifested a higher percent increase in yield as compared to the lowest dose of the test fungicide i.e. 200 ml ha-1. For the detection and quantification of polyoxin D residue in grape, we have developed an efficient and effective analytical method, using liquid chromatography-tandem mass spectrometry (LC-MS/MS), in field treated samples. The residue data had excellent fit to 1st+1st order models giving r2 value of >0.99 with a half-life (t1/2) 8.0 days for recommended dose and 14.5 days for double dose. These findings are useful for effective disease management in grape crop amalgamated with food safety and consumer satisfaction.

scholarly journals Economic Profitability of Sweet Pepper Production under Different Irrigation Levels and Polyethylene Mulch in a Plastic Greenhouse

2018 ◽  
Vol 12 (3-4) ◽  
pp. 109-116
Author(s):  
Mohamed A. A. Abdrabbo ◽  
Assem A. A. Mohamed ◽  
Fadl. A. Hashem ◽  
Ahmed. S. A. Hegab
Keyword(s):  
Water Level ◽  
Irrigation System ◽  
Economic Assessment ◽  
Sweet Pepper ◽  
Jel Classification ◽  
Production Costs ◽  
Growth And Yield ◽  
Gross Margin ◽  
Yield Data ◽  
Irrigation Levels

Field experiment was conducted, during two successive seasons of 2014- 2015 and 2015- 2016, at Dokki protected agricultural site, Giza Governorate, Egypt, to study the profitability of different applied irrigation levels and polyethylene (PE) mulch on plant growth and yield of sweet pepper, (Capsicum annum L.) cv. Godion F1, under plastic house condition. Three irrigation levels (0.50, 0.75 and 1.00) of crop evapotranspiration (ETc), using drip irrigation system and three PE mulch treatments (transparent, black and control) were applied. Data revealed that black PE recorded the highest values of early and total fruit yield per plant during the two seasons. Increasing water level up to 1.00 (ETc) enhanced yield with different PE mulch treatments, while water use efficiency (WUE) decreased with increasing water level. However, Using 0.50 (ETc), with different PE mulches increased WUE compared to using 0.75 (ETc) or 1.00 (ETc). The economic assessment of costs and returns from different treatments were calculated. It was found that the average yield was higher in 1.00 ETc with black mulch. Gross margin per 540 m2 were analysed using yield data, price structures and production costs. The 1.00 (ETc) with black mulch had the highest gross margin which is USD 416.8 and USD 533 (1 USD= 9 Egyptian pound) for the first and second seasons, respectively. The benefit cost ratios (BCRs) per 540 m2 were analysed, and 1.00 (ETc) with black mulch had the highest BCR with 1.36 in the first season and 1.45 in the second season. JEL Classification: Q 01, Q 12, Q 19

scholarly journals Sensitivity Analysis of CERES-Wheat Model under Hisar Conditions

2021 ◽  
Vol 10 (9) ◽  
pp. 368-374
Author(s):  
M. K. Nayak Raj Singh ◽  
Anil Kumar Surender Singh ◽  
Deepak Patil
Keyword(s):  
Grain Yield ◽  
Growth And Yield ◽  
Rabi Season ◽  
Yield Data ◽  
Sunshine Hours ◽  
Dssat Model ◽  
Main Plot ◽  
Genetic Coefficient ◽  
Dough Stage ◽  
Agricultural Meteorology

The field experiment was conducted at Research Farm, Dept of Agricultural Meteorology, CCS HAU, Hisar (Lat.: 290 10’ N, Log.: 75036’ E & 215.2 m above msl), Haryana, India during the rabi season of 2014-15 and 2015-16. Experimental designed laid out with strip plot, as main plot treatment: four growing environments i.e. D1: 5th Nov., D2: 20th Nov., D3: 5th Dec. and D4: 20th Dec. and sub-plot treatment: four irrigation regimes, it applied at different phenophases (I1-CRI, I2- CRI and heading, I3- CRI+ jointing and milking, I4- CRI+ jointing + anthesis and dough stage). Crop growth and yield data of 2014-15 were used for calibration of DSSAT model and cultivar coefficients for WH1105 based on the observed crop characteristics. Genetic coefficient parameters are in the ranges obtained by the few other studies conducted on wheat with the exception of parameters G1, G2, and G3, related to grain growth. Sensitivity of simulated grain yield to down scaled sunshine hours, solar radiation -0.5 to -2.5 hours and -1°C to -5 MJ-2 day-1 showed a gradual decrease in grain yield, respectively.

Wild oat density and the duration of wild oat competition as it influences wheat growth and yield

1976 ◽  
Vol 16 (80) ◽  
pp. 402 ◽  
Author(s):  
DW McNamara
Keyword(s):  
Field Experiments ◽  
Agricultural Research ◽  
Wheat Yield ◽  
Growth And Yield ◽  
Research Centre ◽  
Wild Oat ◽  
Wheat Growth ◽  
Competitive Effects ◽  
Leaf Stage ◽  
Wild Oats

The effects of removing wild oats (Avena spp.) from wheat (cv. Gamut) at different stages of wheat growth were investigated in three replicated factorial field experiments at the Tamworth Agricultural Research Centre. In addition, two wild oat densities were compared in the first experiment, and handpulling wild oats was compared with cutting and a shielded paraquat spray in the second experiment. Wheat yield was linearly reduced by up to 1.025 g m-2 day-1 for the duration of wild oat competition. Reductions in tiller number and dry matter yield measured at maturity and the number of tillers per plant recorded at the 5-6 leaf stage were also proportional to the time wild oats were allowed to compete with the wheat. This competitive effect of wild oats increased with increasing weed density. Handpulling and cutting wild oats gave similar measured competitive effects whereas the paraquat spray applied at the 2-3 leaf stage of wheat reduced wheat density.

Interference of Three Annual Grasses with Grain Sorghum (Sorghum bicolor)

1990 ◽  
Vol 4 (2) ◽  
pp. 245-249 ◽  
Author(s):  
Brenda S. Smith ◽  
Don S. Murray ◽  
J. D. Green ◽  
Wan M. Wanyahaya ◽  
David L. Weeks
Keyword(s):  
Linear Regression ◽  
Grain Yield ◽  
Field Experiments ◽  
Grain Sorghum ◽  
Grass Species ◽  
Row Spacing ◽  
Yield Data ◽  
Weed Density ◽  
Annual Grasses ◽  
Wide Row Spacing

Barnyardgrass, large crabgrass, and Texas panicum were evaluated in field experiments over 3 yr to measure their duration of interference and density on grain sorghum yield. When grain yield data were converted to a percentage of the weed-free control, linear regression predicted a 3.6% yield loss for each week of weed interference regardless of year or grass species. Grain sorghum grown in a narrow (61-cm) row spacing was affected little by full-season interference; however, in wide (91-cm) rows, interference increased as grass density increased. Data from the wide-row spacing were described by linear regression following conversion of grain yield to percentages and weed density to log10. A separate nonlinear model also was derived which could predict the effect of weed density on grain sorghum yield.

Improved growth and yield of Faba beans (Vicia faba cv. Fiord) by inoculation with strains of Rhizobium leguminosarum biovar. viciae in acid soils in south west Victoria

1994 ◽  
Vol 45 (3) ◽  
pp. 613 ◽  
Author(s):  
JM Carter ◽  
WK Gardner ◽  
AH Gibson
Keyword(s):  
Vicia Faba ◽  
Rhizobium Leguminosarum ◽  
Field Experiments ◽  
Natural Populations ◽  
Acid Soils ◽  
Growth And Yield ◽  
Nitrogen Accumulation ◽  
Commercial Strain ◽  
South West ◽  
Faba Beans

The response of faba beans (Vicia faba L. cv. Fiord) to seed inoculation with eight strains of Rhizobium leguminosarum biovar. viciae was examined in field experiments at six sites on acid soils in south-west Victoria. At two of the sites, two additional strains were examined, and in 1988, 14 strains were examined at one site. Very low natural populations of R. leguminosarum bv. viciae were found at the experimental sites. Most strains resulted in improved early nodulation and increased grain yield at all sites, when compared to inoculation with the commercial strain of rhizobia (SU391). Plant dry matter production and nitrogen accumulation in the plant shoot tissue was also increased at one site during the flowering period by some strains. Large visual differences between plots inoculated with SU391 and other strains were evident at most sites. Most uninoculated treatments were not nodulated and yielded very poorly. Treatments inoculated with the strain SU391 performed similarly to the uninoculated treatments.

scholarly journals Crop Response to Leaf and Seed Applications of the Biostimulant ComCat® under Stress Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1161
Author(s):  
Roland Gerhards ◽  
Fructueuse N. Ouidoh ◽  
André Adjogboto ◽  
Vodéa Armand Pascal Avohou ◽  
Berteulot Latus Sètondji Dossounon ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Crop Production ◽  
Field Experiments ◽  
Nutrient Deficiency ◽  
Natural Compounds ◽  
Application Rate ◽  
Winter Barley ◽  
Block Designs ◽  
Crop Response ◽  
Yield Data

Although clear evidence for benefits in crop production is partly missing, several natural compounds and microorganisms have been introduced to the market as biostimulants. They are supposed to enhance nutrient efficiency and availability in the rhizosphere, reduce abiotic stress, and improve crop quality parameters. Biostimulants often derive from natural compounds, such as microorganisms, algae, and plant extracts. In this study, the commercial plant extract-based biostimulant ComCat® was tested in two field experiments with maize in the communities of Banikoara and Matéri in Northern Benin and six pot experiments (four with maize and two with winter barley) at the University of Hohenheim in Germany. Maize was grown under nutrient deficiency, drought, and weed competition, and winter barley was stressed by the herbicide Luximo (cinmethylin). ComCat® was applied at half, full, and double the recommended field rate (50, 100, and 200 g ha−1) on the stressed and unstressed control plants as leaf or seed treatment. The experiments were conducted in randomized complete block designs with four replications. The above-ground biomass and yield data of one experiment in Benin were collected. The biostimulant did not promote maize and winter barley biomass production of the unstressed plants. When exposed to stress, ComCat@ resulted only in one out of eight experiments in higher barley biomass compared to the stressed treatment without ComCat® application. There was a reduced phytotoxic effect of cinmethylin after seed treatment with ComCat®. Crop response to ComCat® was independent of the application rate. Basic and applied studies are needed to investigate the response of crops to biostimulants and their mechanisms of action in the plants before they should be used in practical farming.

Design of a Brassica rapa core collection for association mapping studiesThis article is one of a selection of papers from the conference “Exploiting Genome-wide Association in Oilseed Brassicas: a model for genetic improvement of major OECD crops for sustainable farming”.

Genome ◽  
2010 ◽  
Vol 53 (11) ◽  
pp. 884-898 ◽  
Author(s):  
Jianjun Zhao ◽  
Anna Artemyeva ◽  
Dunia Pino Del Carpio ◽  
Ram Kumar Basnet ◽  
Ningwen Zhang ◽  
...  
Keyword(s):  
Association Mapping ◽  
Flowering Time ◽  
Brassica Rapa ◽  
Core Collection ◽  
Field Experiments ◽  
Research Centre ◽  
Candidate Gene Approach ◽  
Core Collections ◽  
Genome Wide ◽  
Using Data

A Brassica rapa collection of 239 accessions, based on two core collections representing different morphotypes from different geographical origins, is presented and its use for association mapping is illustrated for flowering time. We analyzed phenotypic variation of leaf and seed pod traits, plant architecture, and flowering time using data collected from three field experiments and evaluated the genetic diversity with a set of SSR markers. The Wageningen University and Research Centre (WUR) and the Vavilov Research Institute of Plant Industry (VIR) core collections had similar representations of most morphotypes, as illustrated by the phenotypic and genetic variation within these groups. The analysis of population structure revealed five subgroups in the collection, whereas previous studies of the WUR core collection indicated four subgroups; the fifth group identified consisted mainly of oil accessions from the VIR core collection, winter oils from Pakistan, and a number of other types. A very small group of summer oils is described, that is not related to other oil accessions. A candidate gene approach was chosen for association mapping of flowering time with a BrFLC1 biallelic CAPS marker and a BrFLC2 multiallelic SSR marker. The two markers were significantly associated with flowering time, but their effects were confined to certain morphotypes and (or) alleles. Based on these results, we discuss the optimal design for an association mapping population and the need to fix the heterogeneous accessions to facilitate phenotyping and genotyping.

Sign in / Sign up

Export Citation Format

Share Document