Effects of Parasitic and Non-Parasitic Weeds on Sorghum

1981 ◽  
Vol 17 (4) ◽  
pp. 415-418 ◽  
Author(s):  
F. F. Bebawi ◽  
A. F. Farah
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Crop Yields ◽  
Parasitic Weed ◽  
Straw Yield ◽  
Parasitic Weeds ◽  
Early Removal

SUMMARYThe parasitic weed striga had significantly greater effects on sorghum yield components than non-parasitic weeds. Grain reduction caused by striga amounted to 65% compared with 32% reduction caused by non-parasitic weeds. Comparable reductions were also manifest in straw yield, grains/head and plant height of sorghum. Early removal of striga (a week after its emergence), and thereafter at regular weekly intervals, may help to improve crop yields.

scholarly journals Genetic variability, heritability, genetic advance and correlation among yield and yield components of rice (Oryza sativa L.)

2018 ◽  
Vol 1 (1) ◽  
pp. 149-160 ◽  
Author(s):  
Bhim Nath Adhikari ◽  
Bishnu Prasad Joshi ◽  
Jiban Shrestha ◽  
Naba Raj Bhatta
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Yield Components ◽  
Genetic Advance ◽  
Panicle Length ◽  
Thousand Grain Weight ◽  
Straw Yield ◽  
Days To Flowering ◽  
Genotypic Coefficient Of Variation

This study was conducted during summer 2015 at Regional Agriculture Research Station, Dipayal, Doti, Nepal to estimate the genotypic and phenotypic variability, heritability, genetic advance and correlation on grain yield and yield associated traits using 26 advance genotypes of lowland irrigated rice. Analysis of variance revealed the existence of significant difference for days to flowering, maturity, plant height, panicle length, thousand grain weight and grain yield. High heritability was estimated for days to flowering (0.88), maturity (0.79), thousand grain weight (0.48) and plant height (0.43) suggesting these traits are under high genetic control. High phenotypic variation was observed for grain yield (24.87%), number of grains/panicle (22.45%), number of panicles/m2 (20.95%) and straw yield (20.75%) while grain yield had medium (12.02%) and remaining traits showed low genotypic coefficient of variation (<10%). High phenotypic coefficient of variation estimated as compared to genotypic coefficient of variation showed environmental influence on the expression of traits. Grain yield (11.98) and days to flowering (10.32) showed medium and remaining traits sowed low genotypic advance as percent of mean. High to low heritability with moderate to low genotypic advance as percent of mean suggested these traits were governed by non additive gene thus direct selection is not beneficial. Further improvements on yield potentiality and yield traits on these genotypes are suggested by creating variation and selection. Panicle length (r = 0.230), days to flowering (r = 0.247), effective tillers (r = 0.488) and straw yield (r = 0.846) manifested significant positive association with grain yield indicating that yield can be increased if selection applied in favor of those yield components.

scholarly journals Effect of the fortilizer nitrophoska on sorghum Sorghum bicolor L. parasitized by witchweed (Striga Hermonthica Del Benth)

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Faqiri Awad
Keyword(s):  
Sorghum Bicolor ◽  
Plant Height ◽  
Yield Components ◽  
Striga Hermonthica ◽  
Straw Yield ◽  
Compound Fertilizer ◽  
Head Weight ◽  
Shoot Weight ◽  
Sorghum Bicolor L ◽  
1000 Grain Weight

Effect of the fortilizer nitrophoska on sorghum Sorghum bicolor L. parasitized by witchweed (Striga Hermonthica Del Benth) Nitrophoska (NPK), a compound fertilizer, showed significant effects in stimulating yield components of Sorghum bicolor L. cultivar Tabat and in depressing the parasitism of Striga hermonthica Del. Benth. Over all treatments nitrophoska at N3 (54 kg N/F) gave 160, 105,121 and 120% increases in yield components over the control for head weight, plant height, 1000 grain weight and straw yield/ m2 of sorghum. Nitrophoska scored 83% and 80% decrease in striga dry shoot weight / m2 and striga density / m2, respectively less than the control at N1 (18 kg N/F). To maximize the yield components of sorghum, higher levels of nitrophoska (N2. N3) were recommended to be used; while lower levels of nitrophoska (N1) were recommended to combat the menace of striga in fields of sorghum

scholarly journals Effects of Sowing Dates on Yield and Yield Components of Different Varieties of Wheat (Triticum aestivum L.) in Western Uttar Pradesh

2021 ◽  
Vol 8 (4) ◽  
pp. 188-192
Author(s):  
Y. P. Singh ◽  
◽  
Satybhan Singh ◽  
V. K. Dhangrah ◽  
Tripuresh Mishra ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Agricultural Research ◽  
Test Weight ◽  
Yield Attributes ◽  
Straw Yield ◽  
Days To Flowering ◽  
Yield And Yield Components ◽  
Days To Maturity

An experiment was conducted during Rabi season (November-December) of 2018–19 to study the effect of three dates of sowing (26th November, 11th December and 25th December) on growth, yield attributes and yield of fivewheat varieties (HD-2967, HD-3086, WH-1105, PBW-343 and PBW-226) at Agricultural Research Farm of IFTM University, Moradabad (UP) India. The experiment was laid out in Factorial Randomized Design with two replications. Sowing was done at spacing of 22.5 cm in sandy loam soil. The observations were recorded on growth, flowering, maturity, yield and yield components. Analysis of variance showed the significant variations were observed for the characters viz. plant height, days to flowering, spikes per plant, days to maturity, grain yield, test weight, straw yield, biological yield and harvest index due to changing dates of sowing. However, varietal variations were recorded for plant height, days to flowering, spikes per plant, days to maturity and test weight. Wheat sown on 26th November recorded significant increase in plant height, tillers plant-1, spikes-1 plant, grain yield and straw yield over late sowing on 11th December and 25th December. There was no significant variation among varieties for yield and yield contributing traits such as grains spike-1, grain and straw yield. Significant interaction effects between dates of sowing and varieties were found for days to flowering which showed that the variety HD-2967 is as best wheat variety for early sown and PBW-226 for late sown conditions in order to obtain better returns.

scholarly journals Performance of different rice hybrids in Krishna western delta

2020 ◽  
Vol 15 (3) ◽  
pp. 249-251
Author(s):  
K. Anny Mrudhula ◽  
B. Krishna Veni
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Growth Parameters ◽  
Block Design ◽  
Research Unit ◽  
Panicle Length ◽  
Straw Yield ◽  
Randomized Block Design

A field experiment was conducted at Rice Research Unit, Bapatla during Kharif, 2013 to observe the performance of hybrids under Krishna Western Delta. The experiment was laid out in Randomized Block Design with four replications. The treatments are 5 rice hybrids like DRRH2, DRRH3, KRH2, PA6201 and CRHR32. The results of study revealed that the hybrids exhibited superiority in respect of different growth parameters like plant height, number of tillers per hill, panicle length grain yield and straw yield. Among various tested rice hybrids, maximum grain yield (6408 kg/ha) and straw yield (7178 kg/ha) were recorded in PA6201 which might be due to better growth parameters and yield components of hybrids.

Combining Ability of Plant Height and Yield components in Indian Mustard (Brassica junceaL.Czern & Coss.) under Salt affected Soil using Line×Tester Analysis

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
SHAILESH CHAND GAUTAM ◽  
MP Chauhan
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Combining Ability ◽  
Yield Components ◽  
Indian Mustard ◽  
Heritability Estimate ◽  
Genetic Effects ◽  
Narrow Sense ◽  
Narrow Sense Heritability ◽  
Additive Genetic Effects

Line × tester analysis of twenty lines and three testers of Indian mustard (Brassica juncea L. Czern & Coss.) cultivars were used to estimate general combining ability (GCA), specific combining ability (SCA) effects, high parent heterosis and narrow-sense heritability estimate for plant height, yield components and seed yield. Significant variance of line x tester for the traits like pods per plant and seed yield indicating non additive genetic effects have important role for controlling these traits. Significant mean squares of parents v/s crosses which are indicating significant average heterosis were also significant for all the traits except seeds per pod. High narrow-sense heritability estimates for all the traits except seeds per pod exhibited the prime importance of additive genetic effects for these traits except seeds per pod. Most of the crosses with negative SCA effect for plant height had at least one parent with significant negative or negative GCA effect for this trait. For most of the traits except pods per plant, the efficiency of high parent heterosis effect was more than SCA effect for determining superior cross combinations.

The effects of plant density and fertilizer application on yield components in three marrow-stem kale (Brassica oleracea L.) varieties

1971 ◽  
Vol 77 (1) ◽  
pp. 83-89 ◽  
Author(s):  
T. D. Johnston
Keyword(s):  
Brassica Oleracea ◽  
Plant Height ◽  
Yield Components ◽  
Plant Density ◽  
Fertilizer Application ◽  
Varietal Differences ◽  
Crop Density ◽  
Leaf Yield ◽  
Brassica Oleracea L ◽  
Effects Of Density

SummaryThe effects of crop density and fertilizer application on three varieties of marrowstem kale were investigated. The yield of stem, yield of leaf, components of leaf yield and plant height were studied separately. Varietal differences and effects of density and fertilizer application were significant for all characters, except for the effect of crop density on leaf and stem yield per ha.Significant variety x treatment interactions occurred for a number of the characters measured. The possible importance of these is discussed.

scholarly journals Effect of Salinity Levels (NaCl) on Yield, Yield Components and Quality Content of Sesame (Sesamum Indicum L.) Cultivars

2016 ◽  
Vol 5 (2) ◽  
pp. 104
Author(s):  
Helale Bahrami ◽  
Amir Ostadi Jafari ◽  
Jamshid Razmjoo
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Seed Oil ◽  
Tap Water ◽  
Dry Weight ◽  
Salinity Level ◽  
Shoot Dry Weight ◽  
Weight Yield ◽  
Yield And Yield Components ◽  
Salinity Levels

<p class="emsd-body"><span lang="EN-GB">Seeds of ten sesame cultivars (Karaj, Darab, Safiabad, Jiroft, Borazjan, Yellow-white, Felestin, Ultan, Isfahan and Abpakhsh) were sown into soil filled pots in 2008 and 2009. Pots were watered with six levels of salts (0.0038 (tap water as control), 4.89, 8.61, 10.5, 14.54, 17.74 ds.m<sup>-1</sup> NaCl) until full maturity. Plant height, root and shoot dry weight, yield and yield components, seed oil and protein contents of cultivars were measured. Increasing salinity caused significant reduction in plant height, root and shoot dry weight, yield and yield components, seed oil and protein contents of all cultivars. However, there were significant differences among the cultivars for measured traits for each salinity level. Based on seed oil yield data, Safiabad and Kraj at 0.0038ds.m<sup>-1</sup>, Safiabad and Ultan at 4.89ds.m<sup>-1</sup>, Ultan, Safiabad and Darab at 8.61 salinity levels were the superior cultivars. High variability in tolerance to salinity among the tested sesame cultivars suggests that selection of more salt tolerant cultivars for planting or breeding purposes is possible.</span></p><p class="emsd-body"><span lang="EN-GB">Highlights</span></p><p class="emsd-body"><span lang="EN-GB">Effects of contrasting salinity levels (0.0038 (tap water as control), 4.89, 8.61, 10.5, 14.54, 17.74 ds.m<sup>-1</sup>NaCl) on sesame cultivars were tested. Salinity reduced plant growth and yield and seed oil and protein contents. However, there were significant differences among the cultivars for measured traits for each salinity level. </span></p>

scholarly journals Performance of Ratoon Rice Under Different Stubble Cuttings and Fertilizer Management

2005 ◽  
Vol 5 (1) ◽  
pp. 42-54
Author(s):  
Bayani Dejaño ◽  
◽  
Reynaldo Javier ◽  
Keyword(s):  
Leaf Area ◽  
Yield Components ◽  
Fertilizer Treatment ◽  
Fertilizer Management ◽  
Ratoon Crop ◽  
Straw Yield ◽  
Net Return ◽  
Agronomic Characteristics ◽  
Main Crop ◽  
Yield And Yield Components

Stubble cutting heights significantly affected the agronomic characteristics as well as the yield and yield components of ratoon rice. Similarly, fertilizer treatment moslty influenced the agronomic and yield and yield components of ratoon rice. Plants applied with basal or foliar or a combination of two were harvested late, grew taller, had wider leaf area, higher straw yield, more tillers, longer and heavier panicles, more yield and harvest indices. Cost and return main crop + ratoon crop using the different studble cutting heights and fertilizer treatments were economically profitable. Results showed that basal application of fertilizer at a rate of 60-30-30 kg N, P2O5 and K2O obtained the highest net return of P19,868.56.

scholarly journals Influence of Phosphorus Fertilizer Rates on Yield and Yield Components of Faba Bean (Vicia faba L.) Varieties in Lemu Bilbilo District of Arsi Zone, Southeastern Ethiopia

2019 ◽  
pp. 1-11
Author(s):  
Gobena Negasa ◽  
Bobe Bedadi ◽  
Tolera Abera
Keyword(s):  
Plant Height ◽  
Faba Bean ◽  
Yield Components ◽  
Biomass Yield ◽  
Rate Of Return ◽  
Phosphorus Fertilizer ◽  
Higher Plant ◽  
Marginal Rate ◽  
Yield And Yield Components ◽  
Arsi Zone

Faba bean production is a common practice in Lemu Bilbilo areas. However, faba bean productivity is affected and limited by poor soil fertility and lack of alternative technologies such as application of optimum phosphorus fertilizer for different faba bean varieties. In view of this, a field experiment was conducted on farmer’s field during the 2017 main cropping season at Lemu Bilbilo with the objectives to determine the response of faba bean varieties to different rates of P fertilizer and its influence on yield and yield components of faba bean varieties.  The treatments include three faba bean varieties (Tumsa, Gebelcho and Dosha) and five phosphorus levels (0, 10, 20, 30 and 40 kg P ha-1) from Triple Super Phosphate. The experiment was laid out in a randomized complete blocked design with 3 x 5 factorial arrangements with three replications. Significantly (P<0 .05) higher plant height was recorded from Tumsa variety. Total productive tillers per plant, thousand seed weights, and harvest index and biomass yield of faba bean were significantly affected by main effect of varieties. Higher total productive tillers per plant (1.53) were obtained from application of 30 kg P ha-1. Higher plant height (153 cm), biomass yield (14158 kg ha-1) and grain yield (6323 kg ha-1) were obtained from application of 40 kg P ha-1. Application of 10, 20 and 30 kg P ha-1 gave marginal rate of return of 1404694 and 502% for faba bean production, which are well above the minimum acceptable rate of return. Therefore, application of 20 kg ha-1 of P with Tumsa, Gebelcho and Dosha faba bean varieties were proved to be productive and superior both in seed yield as well as economic advantage and recommended for faba bean production in Lemu Bilbilo area. Further study should be conducted in the future both over locations and years in order to give full recommendation for practical application.

scholarly journals The impact of sowingdate and production area on the yield of white lupin (Lupinus albus L.) on Nyírség brown forest soil

2014 ◽  
pp. 133-137
Author(s):  
Gabriella Tóth ◽  
Ferenc Borbély
Keyword(s):  
Yield Components ◽  
Crop Yields ◽  
Lupinus Albus ◽  
Meteorological Conditions ◽  
White Lupin ◽  
Seed Number ◽  
Brown Forest Soil ◽  
Production Area ◽  
The Impact ◽  
Lupinus Albus L

The lupine is very sensitive to the different ecological conditions. The examinations of lupine was started in 2003 and our aim is determine yield components which directly affecting crop yields (flower, pod and seed number per plants) in different sowing times (3 times, two weeks apart) and growing area area (240, 480, 720 cm2) combinations. According to our results the sowing times, the growing area and the meteorological conditions are influence on yield significantly. Our data suggest that the early sowing and large growing area combination is favourable to rate of fertilized plants and to development of yield. Later sowing reduces the seed yield depending on the cropyear. In our experiment, the decrease of yield was in the unfavourable year (2003) 20–96%, and in the most favourable meteorological conditions (2004) 10–79%, and in rich rainfall year (2005) 15–88%.

Sign in / Sign up

Export Citation Format

Share Document