scholarly journals Checking the Significance of Correlation Coefficient from the Regression Analysis using Wheat Yield.

2021 ◽  
Vol 2 (2) ◽  
pp. 132-141
Author(s):  
Keyword(s):  
Plant Height ◽  
Correlation Coefficient ◽  
Standard Error ◽  
Wheat Yield ◽  
Wheat Crop ◽  
Plot Yield ◽  
Standard Coefficient ◽  
Result Show ◽  
High Production ◽  
Agriculture Research Institute

Major objective of the present study is estimate regression model and Correlation coefficient. The data were collected from the wheat section, Agriculture Research Institute (ARI) Tandojam, regarding various factors influencing on the wheat production. The survey result show that yield has significant positive correlation with the parameters such as the number of tillers per plant, number of seed per spike, length of spike in cm, the number of spikes let per, tiller per hectare and plant height cm. The parameter of wheat number of tillers per plant meter square standard error is (0.569), coefficient is (0.816). T-value is (1.43) and with positively significant is (0.018). The parameter of number of seed per spike standard error is (0.107) coefficient is (0.0811) To determine the effect of dependent and independent T-value of (0.75) with significant (0.4724).The parameter of wheat is length of spike in cm is standard error is (1.704), Coefficient is (1.092), T-value is (0.64) with the positively significant is (0.029) T-value is (2.20) and with positively significant is (0.039).The parameter of tiller per hectare is standard error is (0.026), standardized The Number of spike let per spike with standard error of this parameter (0.5172)coefficient is (1.135), the coefficients beta is (0.041), and T-value of this parameter is (1.73) and with the positively significant value is (0.121). The parameter of wheat is day of heading cm with the standard error is (0.650), the standardized coefficient beta is negative (1.426), the T – value of this parameter is (-2.19) with the weak significant of (0.059). The parameter of wheat is plant height cm standard error is (0.203), with standardized coefficient beta is (0.081), T-value of this parameter is (0.40) with the significant value is (0.697). The parameter of lodging score per hector centimeter with standard error is (0.662), the standard coefficient of beta is (-0.504), T-value of this parameter is (-0.76), with the significant of (0.468).The parameter of number of grains weight in grams with standard error is (0.245) standardized coefficient of beta is (0.106), T-value is (0.43) with the significant value is (0.677). The parameter of wheat is seed index 1000 grains weight with standard error is (3.437) , coefficient is (0.384) , T-value is (0.11) With the significant value is (0.913).The parameter of wheat is plot yield gram with standard error is (0.0215), with coefficients is (-0.036), is T-value of this parameter is (-1.72) with the significant value is (0.124). The Parameter of wheat is nitrogen per hector kilogram with standard error is (0.168), coefficient is (0.1688), is T-value is (1.00) with the significant of (0.345).The parameter of Phosphorus per hack Kg with standard error is (0.333), coefficient of is (-0.138), T-value is this parameter is (-0.42) with the significant of (0.688). It is suggested that the more factors can be studied and different statistical techniques, agronomics practices and different doses of fertilizer can be applied for the high production of wheat crop.

scholarly journals EFFECTS OF WILD OAT (AVENA FATUA L.)DENSITY ON WHEAT (TRITICUM EASTIVUM L.). YIELD AND YIELD COMPONENTS

2016 ◽  
Vol 4 (9) ◽  
pp. 124-130
Author(s):  
Abebe Woldesenbet ◽  
Abreham Wolde ◽  
Ayele Tefera
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Block Design ◽  
Wheat Yield ◽  
Dry Weight ◽  
Wheat Crop ◽  
Wild Oat ◽  
Fresh Weight ◽  
Wild Oats ◽  
Yield And Yield Components

The experiment was conducted under field condition at Jimma University, College of Agricultures and Veterinary Medicine (JUCAVM) to determine the effect of various wild oats (Avevafatua L.) densities on yield and yield components of Wheat (Triticumeastivum L.). The experiment design used was the randomized complete block design and each of the experimental treatment was replicated three times. A Wheat cultivar, Digalu was grown with (0, 20, 40, 60 and 80) Wild Oat densities as a treatment. Data were recorded on wheat plant height, number of tillers, fresh weight and dry weight. The result revealed that various Wild Oats densities statistically (p≤0.05) affected plant height, number of tillers, fresh weight and dry weight. The maximum values of all the parameters were recorded in the (0) Wild Oat density as well as from Wild Oats density (20). Whereas, the minimum values of these parameters were recorded where (80) wild oats densities were present. From the study it could be concluded that Wheat yield and yield components were greatly affected by Wild Oat densities. Judicious control measures for wild oats are recommended to be adopted that can control Wild Oats in Wheat crop to reduce the crop losses due to this noxious weed.

scholarly journals Mapping Wheat Dry Matter and Nitrogen Content Dynamics and Estimation of Wheat Yield Using UAV Multispectral Imagery Machine Learning and a Variety-Based Approach: Case Study of Morocco

2021 ◽  
Vol 3 (1) ◽  
pp. 29-49
Author(s):  
Ghizlane Astaoui ◽  
Jamal Eddine Dadaiss ◽  
Imane Sebari ◽  
Samir Benmansour ◽  
Ettarid Mohamed
Keyword(s):  
Random Forest ◽  
Nitrogen Uptake ◽  
Dry Matter ◽  
Vegetation Indices ◽  
Wheat Yield ◽  
Wheat Crop ◽  
Multispectral Imagery ◽  
Biophysical Parameters ◽  
Phenological Stages ◽  
Wheat Varieties

Our work aims to monitor wheat crop using a variety-based approach by taking into consideration four different phenological stages of wheat crop development. In addition to highlighting the contribution of Red-Edge vegetation indices in mapping wheat dry matter and nitrogen content dynamics, as well as using Random Forest regressor in the estimation of wheat yield, dry matter and nitrogen uptake relying on UAV (Unmanned Aerial Vehicle) multispectral imagery. The study was conducted on an experimental platform with 12 wheat varieties located in Sidi Slimane (Morocco). Several flight missions were conducted using eBee UAV with MultiSpec4C camera according to phenological growth stages of wheat. The proposed methodology is subdivided into two approaches, the first aims to find the most suitable vegetation index for wheat’s biophysical parameters estimation and the second to establish a global model regardless of the varieties to estimate the biophysical parameters of wheat: Dry matter and nitrogen uptake. The two approaches were conducted according to six main steps: (1) UAV flight missions and in-situ data acquisition during four phenological stages of wheat development, (2) Processing of UAV multispectral images which enabled us to elaborate the vegetation indices maps (RTVI, MTVI2, NDVI, NDRE, GNDVI, GNDRE, SR-RE et SR-NIR), (3) Automatic extraction of plots by Object-based image analysis approach and creating a spatial database combining the spectral information and wheat’s biophysical parameters, (4) Monitoring wheat growth by generating dry biomass and wheat’s nitrogen uptake model using exponential, polynomial and linear regression for each variety this step resumes the varietal approach, (5) Engendering a global model employing both linear regression and Random Forest technique, (6) Wheat yield estimation. The proposed method has allowed to predict from 1 up to 21% difference between actual and estimated yield when using both RTVI index and Random Forest technique as well as mapping wheat’s dry biomass and nitrogen uptake along with the nitrogen nutrition index (NNI) and therefore facilitate a careful monitoring of the health and the growth of wheat crop. Nevertheless, some wheat varieties have shown a significant difference in yield between 2.6 and 3.3 t/ha.

scholarly journals Genetic improvement of bread wheat yield and associated traits in Spain during the 20th century

2012 ◽  
Vol 151 (1) ◽  
pp. 105-118 ◽  
Author(s):  
M. SANCHEZ-GARCIA ◽  
C. ROYO ◽  
N. APARICIO ◽  
J. A. MARTÍN-SÁNCHEZ ◽  
F. ÁLVARO
Keyword(s):  
Plant Height ◽  
20Th Century ◽  
Wheat Yield ◽  
Grain Weight ◽  
Wheat Improvement ◽  
Yield Gain ◽  
Significant Yield ◽  
Improved Cultivars ◽  
Testing Environments ◽  
New Germplasm

SUMMARYA collection of 26 wheat genotypes widely grown in Spain during the 20th century was evaluated in eight contrasting environments in order to quantify breeding achievements in yield and associated traits. From 1930 to 2000, yield increased at a rate of 35·1 kg/ha/yr or 0·88%/yr, but estimations of relative genetic gain (RGG) were environment-dependent. RGG estimated for yield were positively associated with the average minimum daily temperatures from sowing to heading in the testing environments (R2 = 0·81; P < 0·01). The number of grains/spike and the number of spikes/m2 increased at a rate of 0·60%/yr and 0·30%/yr, respectively, while grain weight remained unchanged. The present study detected two main episodes of yield improvement during the century. The first one coincided with the introduction, during the 1950s, of the first improved cultivars derived from intra-specific crosses, which increased the yield of landraces by 30% due to an increase of c. 58% in the number of grains/spike, accompanied by a 16% reduction in grain weight. These initial cultivars (termed ‘old-bred’ in a previous study by Sanchez-Garcia et al. 2012) exhibited a higher harvest index (HI), increased from 0·25 to 0·40, but maintained the same aboveground biomass at maturity as the landraces (despite reducing both plant height and the number of tillers/plant) due to increases in the proportion of tillers bearing spikes. The second yield gain occurred after the introduction, in the early 1970s, of semi-dwarf germplasm from CIMMYT (International Maize and Wheat Improvement Centre) and some French cultivars. This new germplasm further reduced plant height, improved HI up to 0·45 and increased the number of tillers/plant while maintaining their rate of fertility, thus resulting in a yield gain of c. 37%. The cultivars released during the last decade of the century did not contribute to significant yield improvements.

Italian Ryegrass (Lolium Multiflorum) Management Options in Winter Wheat in Oklahoma

2007 ◽  
Vol 21 (1) ◽  
pp. 151-158 ◽  
Author(s):  
Chad S. Trusler ◽  
Thomas F. Peeper ◽  
Amanda E. Stone
Keyword(s):  
Winter Wheat ◽  
Plant Density ◽  
Control Strategies ◽  
Lolium Multiflorum ◽  
Wheat Yield ◽  
Italian Ryegrass ◽  
Wheat Crop ◽  
Management Options ◽  
Spike Density ◽  
Herbicide Treatments

An experiment was conducted at three sites in central Oklahoma to compare the efficacy of Italian ryegrass management options in no-till (NT) and conventional tillage (CT) winter wheat. The Italian ryegrass management options included selected herbicide treatments, wheat-for-hay, and a rotation consisting of double-crop soybean seeded immediately after wheat harvest, followed by early season soybean, and then by wheat. In continuous wheat, before application of glyphosate or tillage, Italian ryegrass plant densities in mid-September were 12,300 to 15,000 plants/m2in NT plots vs. 0 to 500 plants/m2in CT plots. When applied POST, diclofop controlled more Italian ryegrass than tralkoxydim or sulfosulfuron. In continuous wheat, yields were greater in CT plots than in NT plots at two of three sites. None of the Italian ryegrass management options consistently reduced Italian ryegrass density in the following wheat crop. Of the Italian ryegrass control strategies applied to continuous wheat, three herbicide treatments in NT at Chickasha and all treatments in NT at Perry reduced Italian ryegrass density in the following wheat crop. Italian ryegrass plant density in November and spike density were highly related to wheat yield at two and three sites, respectively. No management options were more profitable than rotation to soybean.

WHEAT YIELD AND WATER USE EFFICIENCY UNDER CONTRASTING RESIDUE AND TILLAGE MANAGEMENT SYSTEMS IN A SEMIARID AREA OF MOROCCO

2002 ◽  
Vol 38 (2) ◽  
pp. 237-248 ◽  
Author(s):  
R. Mrabet
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Wheat Yield ◽  
Conventional Tillage ◽  
Wheat Crop ◽  
No Tillage ◽  
Partial Removal ◽  
No Till ◽  
Management Technology ◽  
Use Efficiency

Wheat (Triticum aestivum) production using no-tillage is becoming an increasingly accepted management technology. Major obstacles to its adoption in Morocco, however, are exportation of wheat straw from the field and stubble grazing. Among pertinent solutions is the control of these practices. A four-year field study was conducted to determine the effect of residue level under no-tillage on wheat grain and total dry-matter yields, water use and water-use efficiency, and to compare this with conventional tillage systems. The aim was to evaluate whether all the straw produced is needed for no-till cropping or whether partial removal of straw from the field is possible without any adverse effect on production. No-tillage and deep tillage with disk plough performed equally well and subsurface tillage with an off-set disk produced the lowest yields. Both bare and full no-tillage covers depressed wheat production. Uo to 30% of straw produced under no-tillage can be removed without jeopardizing wheat crop performance.

scholarly journals Evaluation of efficacy of carfentrazone + metsulfuron, sulfosulfuron + metsulfuron and halauxifen against Rumex spp. in wheat (Triticum aestivum) in Western Haryana

2021 ◽  
Author(s):  
Sunil Soni ◽  
Samunder Singh ◽  
Rajbir Garg
Keyword(s):  
Electrical Conductivity ◽  
Triticum Aestivum ◽  
Chlorophyll Fluorescence ◽  
Plant Height ◽  
Dry Weight ◽  
Recommended Dose ◽  
Wheat Crop ◽  
Broad Leaf ◽  
Mortality Percentage ◽  
Poor Efficacy

Rumex spp. is most dominating broad-leaf weed of wheat crop. Complaints of poor efficacy of different herbicides against Rumex spp. have reported recently from different locations of Haryana state. Therefore, the present study was carried out under completely randomised design, replicated thrice, using three different herbicides namely carfentrazone + metsulfuron, sulfosulfuron + metsulfuron and halauxifen as treatments applied with three doses against four populations of Rumex spp. Plant height, chlorophyll fluorescence, electrical conductivity, mortality percentage and dry weight were recorded as observations. Results indicated that most of the Rumex biotypes were found resistant against sulfosulfuron + metsulfuron application. Majority of biotypes were moderately controlled by the application of halauxifen. Carfentrazone + metsulfuron effectively controlled the Rumex spp. and provided 70-90 % control to all biotypes at double of the recommended dose. As per results of this study, carfentrazone + metsulfuron can be recommended for control of Rumex spp. in wheat.

scholarly journals The effect of liquid pig manure on the wheat yield, content and balance of nutrients in light-gray forest soil with light particle-size composition

2019 ◽  
Vol 20 (5) ◽  
pp. 456-466
Author(s):  
V. I. Titova ◽  
L. D. Varlamova ◽  
R. N. Rybin ◽  
T. V. Andronova
Keyword(s):  
Particle Size ◽  
Spring Wheat ◽  
Wheat Yield ◽  
Size Composition ◽  
Light Particle ◽  
Pig Manure ◽  
Wheat Crop ◽  
Dry Matter Content ◽  
Particle Size Composition ◽  
Positive Balance

The research has been carried out under production conditions on light gray forest soils with light particle-size composition at an area of 550 hectares where liquid pig manure (LPM) of a large pig breeding complex is annually used as an organic fertilizer at doses of 60 and 90 t/ha. The average characteristics of LPM are as follows: dry matter content is 9.5%, pH 7.7 units, nitrogen 0.22%, phosphorus 0.11%, and potassium 0.12%. The cultivated grain crops were presented by winter and spring wheat varieties, Moskovskaya 39 and Esther, respectively. It has been established that at the dose of 60 t/ha LPM for two years of research at an average a mean wheat yield was 3.0-3.75 t/ha, and at the dose of 90 t/ha - up to 4.75 t/ha. The return on investments for fertilizers in the “winter wheat → spring wheat” crop rotation link at the dose of 60 t/ha of LPM was 5.41 kg of grain per 1 kg of active substance of manure, at the dose of 90 t/ha - 4.57 kg / kg. A positive balance of nutritional elements developed on all fields, but it was better balanced when the dose of LPM was 60 t/ha and the yield was 3.0 t/ha of grain annually, or when the LPM dose was 90 t/ha and the yield of wheat was 4.75 t/ha. In this case, the estimated potassi-um supply of soil occurs at a lower rate than that of nitrogen and phosphorus. The application of 120 t of LPM during two years in total on loamy sand and of 180 t/ha on light loamy soil provided an increase in the content of mobile phosphorus compounds by 5-22 mg/kg, and potassium - by 11-30 mg/kg with a variation coefficient of 28-57% and 21-49%, respectively.

scholarly journals Spring wheat yield (Triticum aestivum L.) when applying selenium fertilizers in extreme growing conditions

2021 ◽  
Vol 843 (1) ◽  
pp. 012038
Author(s):  
I I Seregina ◽  
I G Makarskaya ◽  
A S Tsygutkin ◽  
I V Kirichkova
Keyword(s):  
Triticum Aestivum ◽  
Water Supply ◽  
Spring Wheat ◽  
Sodium Selenite ◽  
Wheat Yield ◽  
Triticum Aestivum L ◽  
Wheat Crop ◽  
Wheat Varieties ◽  
Negative Effect ◽  
Positive Effect

Abstract To study the effect of sodium Selenite application different methods on the yield of spring wheat varieties, depending on the conditions of water supply, a series of vegetation experiments in accordance with the methodology were carried out. The object of the study is spring wheat of the Zlata variety (Triticum aestivum L.). It was found that the effect of selenium on the yield of wheat of the Zlata variety depended on the method of its application and the conditions of water supply. With optimal water supply, the positive effect of selenium on the yield of spring wheat plants was revealed with both methods of applying sodium selenite. It was found that in conditions of drought, the positive effect of selenium was obtained with both methods of using sodium selenite. The greatest efficiency of selenium is obtained in foliar processing of plants. The increase in grain weight in this variant was 1.4 times. The increase in the share of the agronomic significant part of the wheat crop yield to 36% is shown, which indicates the decrease in the negative effect of drought on the formation of spring wheat yield when using foliar processing of plants.

scholarly journals Field-based investigation of aged biochar coupled with summer legumes effect on wheat yield in Pakistan

2020 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Hafeez Ur Rahim ◽  
Sajjad Ahmad ◽  
Zaid Khan ◽  
Muhammad Ayoub Khan
Keyword(s):  
Maximum Yield ◽  
Wheat Yield ◽  
Wheat Crop ◽  
Human Consumption ◽  
Thousand Grain Weight ◽  
Data Set ◽  
Different Types ◽  
Biological Yield ◽  
Soil Fertility Improvement

There is a debate about whether the aged biochar effect can increase the crop yield or not. Herein, a field-based experimental data set and analysis provide the information on the aged biochar effect coupled with summer legumes on the yield of subsequent wheat. Briefly, in summer 2016, three different types of legumes i.e. mungbean, sesbania, and cowpea were grown with the intention of grain for human consumption, green manuring for soil fertility improvement, and fodder for livestock consumption. A fallow was also adjusted in the experiment with the purpose of comparison. Biochar was added to each experimental plot in triplicates at the rate of 0, 5, and 10 tons ha-1. After the harvesting of legumes, the biomass of each sesbania treatment plot was mixed in the field while the biomass of mungbean and cowpea were removed from each respective plot. To investigate the aged biochar effect, the wheat crop was grown on the same field layout and design (randomized complete block) of legumes. The data analysis highlighted that significantly maximum grain yield (kg ha-1), biological yield (kg ha-1); thousand-grain weight (g), and straw yield (kg ha-1) were obtained in the plots mixed with sesbania. Regarding the aged biochar effect, maximum yield was obtained in the plots with 10 tons ha-1treatment dose. Additionally, the interaction of aged biochar coupled with legumes was non-significant. In conclusion, this work could prove that aged biochar coupled with summer legumes enhanced the yield of subsequent wheat on a sustainable basis due to its long-term numerous benefits to the soil-plant system.

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