scholarly journals Differential response of groundnut genotypes for iron (Fe) deficiency chlorosis tolerance and productivity traits under Fe-supplemented and Fe-non-supplemented conditions

2021 ◽  
Vol 81 (01) ◽  
pp. 74-86
Author(s):  
Gopalakrishna K. Naidu ◽  
Santosh K. Pattanashetti ◽  
Omesh Kumar ◽  
Onteddu Sridevi ◽  
Basanagouda C. Patil
Keyword(s):  
Calcareous Soils ◽  
Growth And Yield ◽  
Yield Potential ◽  
Fe Deficiency ◽  
Growth Stages ◽  
Iron Deficiency Chlorosis ◽  
Pod Yield ◽  
Maximum Reduction ◽  
Active Iron ◽  
100 Seed Weight

Groundnut is sensitive to Fe deficiency under alkaline and calcareous soils and exhibits iron deficiency chlorosis (IDC) causing significant reduction in growth and yield. Genotypes were assessed for IDC related traits such as visual chlorosis rating, SPAD chlorophyll meter reading, chlorophyll and active iron (Fe2+) content across five growth stages and also for productivity traits viz., plant height, number of primary branches, number of pods per plant, pod yield, shelling per cent, 100 seed weight and haulm yield. Comparison between Fe-supplemented and Fe-nonsupplemented condition for IDC related traits showed not much difference among IDC tolerant genotypes across all five growth stages, while significant differences among IDC susceptible genotypes were observed. Maximum reduction in pod yield was observed among IDC susceptible genotypes compared to IDC tolerant and moderately tolerant genotypes. However, recently released variety G 2- 52 with moderate tolerance to IDC and higher yield potential recorded higher pod yield both under Fe applied (1754 kgha–1) and non-applied conditions (1544 kgha–1).

scholarly journals Effect of elevated atmospheric CO2 concentrations on growth and yield of blackgram (Vigna mungo L. Hepper) - a rainfed pulse crop

2008 ◽  
Vol 53 (No. 2) ◽  
pp. 81-88 ◽  
Author(s):  
M. Vanaja ◽  
P. Raghuram Reddy ◽  
N. Jyothi Lakshmi ◽  
M. Maheswari ◽  
P. Vagheera ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Vigna Mungo ◽  
Growth And Yield ◽  
Growth Stages ◽  
Total Biomass ◽  
Initial Growth ◽  
Percentage Increase ◽  
Total Seed ◽  
Different Levels ◽  
100 Seed Weight

The response of blackgram (<i>Vigna mungo</i> L. Hepper) to two levels of elevated carbon dioxide (550 and 700 ppm) in terms of growth and yield was investigated and compared with ambient CO<sub>2</sub> level (365 ppm) using open-top chambers. The growth parameters viz., length and weight of root and shoot, root:shoot ratio, leaf area and weight significantly increased at 700 ppm CO2 when compared with 550 ppm. The percentage increase in total biomass at 700 and 550 ppm CO<sub>2</sub> was 65.4% and 39%, respectively compared to the ambient (chamber) control. The increase in total seed yield at 700 ppm (129%) was due to an increase in number of pods per plant and 100 seed weight, whereas at 550 ppm (88.7%) it was due to an increased number of pods/plant and seeds/pod. The results indicate variable responsive effects at different levels of CO<sub>2</sub> emphasizing the pertinence of research on elevated CO<sub>2</sub> in various agroecological inhabitations all over the world. The indication of higher responses for root and leaf at initial growth stages at the higher elevated level of CO<sub>2</sub> (700 ppm), which leads to better root establishment, achieving early photosynthetic efficiency and also better biomass production, and its improved partitioning can be reckoned as a positive aspect of increasing concentrations of CO<sub>2</sub> in atmosphere. The harvest index increased significantly to 35.7 and 38.4% at 550 and 700 ppm, respectively; it is a very important phenomenon in pulses for breaking the yield barrier.

scholarly journals Wild onion (Asphodelus tenuifolius) competition in rainfed chickpea-chickpea cropping system

2015 ◽  
Vol 33 (1) ◽  
pp. 67-75 ◽  
Author(s):  
M. SIBTAIN ◽  
A. TANVEER ◽  
M.M. JAVAID ◽  
H.H. ALI
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Yield Loss ◽  
Cropping System ◽  
Growth And Yield ◽  
Yield Potential ◽  
Yield Reduction ◽  
Estimation Model ◽  
Plant Seeds ◽  
100 Seed Weight

Chickpea yield potential is limited by weed competition in typical chickpea growing areas of Pakistan where zero tillage crop grown on moisture conserved from rains received during the months of September and August. The objective of this work was to evaluate the growth and yield characteristics of chickpea grown in coexistence with increasing densities of wild onion (Asphodelus tenuifolius). The experiment was comprised of six density levels viz. zero, 20, 40, 80, 160 and 320 plants m-2 of A. tenuifolius. A decrease in chickpea primary and secondary branches per plant, pods per plant, seeds per pod, 100-seed weight and seed yield was observed due to more accumulation of dry matter per increasing densities of A. tenuifolius. The increase in A. tenuifolius density accelerated chickpea yield losses and reached the maximum values of 28, 35, 42, 50, 58 and 96% at 20, 40, 80, 160 and 320 A. tenuifolius plants m-2, respectively. The yield loss estimation model showed that chickpea losses with infinite A. tenuifolius density were 60%. Yield reduction could be predicted by 2.52% with increase of one A. tenuifolius plant m-2. It is concluded that A. tenuifolius has a strong influence on chickpea seed yield and showed a linear response at the range of densities studied.

scholarly journals Parameterization of SSM Model to Analyze Wheat Growth and Yield Potential Under Pakdasht Conditions

2018 ◽  
Vol 11 (4) ◽  
pp. 1913-1926
Author(s):  
Hamed Azad ◽  
Gholam Abbas Akbar ◽  
Gholam Ali Akbari ◽  
Elias Soltani
Keyword(s):  
Block Design ◽  
Simulation Models ◽  
Growth And Yield ◽  
Yield Potential ◽  
Growth Stages ◽  
Wheat Cultivars ◽  
Phenological Stages ◽  
Wheat Growth ◽  
Production And Distribution ◽  
Growth And Aging

Simulation models of crops are used for experimental and complementary research on field projects. These models are also useful for interpreting the results and examining agricultural systems under different environmental and management conditions. The aim of this study was to describe a model for wheat (SSM), guarantee wheat cultivars in a genetic discussion in the Pakdasht environment, and present the results of its evaluation. The model of phenological stages, growth, and aging of leaf area and the production and distribution of dry matter simulates water function and balance. The SSM model simulates the growth stages of the plant in response to environmental factors, heat, and the ability to access solar radiation. In order to evaluate the SSM model, field experiment data of two wheat cultivars—SW and Pishtaz—were used as factorial, based on a randomized complete block design with four replications. Subsequently, the parameters were evaluated, the model was tested in accordance with independent data, and the results indicate its acceptance for the main aspects of crops compared to the observed experiments—for example, for SW, we have 1830 GDD to 2310 GDD from pollination to treatment and extinction factor in Pishtaz is 0.71 and PLAPOW coefficient is 1.6484±.063, which can finally be used to simulate these figures.

scholarly journals Growth and Yield Performance of Peanut (Arachis hypogaea) Lines in Pampanga, Philippines

2015 ◽  
Vol 20 (1) ◽  
Author(s):  
Mary Grace B. Gatan
Keyword(s):  
Arachis Hypogaea ◽  
Growth And Yield ◽  
Yield Potential ◽  
Total Production ◽  
Plant Weight ◽  
Pod Yield ◽  
Significant Difference ◽  
Days To Maturity ◽  
National Cooperative ◽  
Experimental Trials

Peanut (Arachis hypogaea Linn) is grown on nearly 23.95 million hectares worldwide with a total production of 36.45 million tons. In the country, peanut is one of the food legumes with commercial importance that contributed much to domestic earnings. There are promising peanut lines that need to be evaluated to pass the National Seed Industry Council (NSIC) Certification. Hence, the National Cooperative Trials from 2011-2014 were conducted to evaluate their agronomic characteristics, reaction to diseases and yield potential in Pampanga, Philippines. Experimental trials were laid out following Randomized Complete Block Design (RCBD). Data were subjected to Analysis of Variance (ANOVA) and treatment means were compared using Least Significant Difference (LSD). At wet season trials, results revealed significant differences in all treatments relative to days to flower, number of pods/plant, weight of 100 seeds, shelling percentage and pod yield except days to maturity.  The ICGV 00350 and ICGV 99046 obtained the highest pod yield with 2.1 and of 2.4 tons/ha, respectively. During dry season, significant differences were noted among peanut lines in relation to days to flower, days to maturity, number of pods/ plant, weight of 100 seeds, shelling percentage and pod yield (tons/ha). The ICGV 01273 out yielded the 10 peanut lines. Keywords— Agriculture, National Cooperative Trials, Arachis hypogaea, experimental trials, Philippines, Asia

scholarly journals Identification of iron deficiency chlorosis tolerant sources from mini-core collection of groundnut (Arachis hypogaea L.)

2018 ◽  
Vol 16 (5) ◽  
pp. 446-458 ◽  
Author(s):  
Santosh K. Pattanashetti ◽  
Gopalakrishna K. Naidu ◽  
Prakyath Kumar K.V. ◽  
Omprakash Kumar Singh ◽  
Basavaraj D. Biradar
Keyword(s):  
Iron Deficiency ◽  
Principal Components ◽  
Core Collection ◽  
Growth Stages ◽  
Alkaline Soils ◽  
Iron Deficiency Chlorosis ◽  
Pod Yield ◽  
Mini Core Collection ◽  
Iron Deficient ◽  
Botanical Varieties

AbstractIron deficiency chlorosis (IDC) is common among groundnut grown in calcareous and alkaline soils in India, China and Pakistan and causes considerable reduction in pod yield. To identify genetically diverse IDC tolerant accessions, the mini-core collection of groundnut representing geographical diversity was evaluated for IDC response over 2 years in iron-deficient calcareous soils. Enormous genetic variability was evident in the mini-core collection for IDC tolerance-related traits such as a visual chlorotic rating (VCR) and SPAD chlorophyll meter reading (SCMR) across five growth stages. Several IDC tolerant sources belonging to different botanical varieties such as hypogaea bunch (ICG # 5051, 6766, 5286, 6667, 4538, 14008, 5663, 9842, 11855), hypogaea runner (ICG 10479), fastigiata (ICG 10890) and vulgaris (ICG # 11651, 118) were identified. Among the six botanical varieties of groundnut, hypogaea bunch types were found most tolerant to IDC and this is the first report in groundnut. The IDC tolerant sources identified were irrespective of their country of origin. The principal component analysis based on VCR, SCMR, pod yield and its related traits revealed five major principal components that explained 80% of the total variation. The biplot generated using PC1 and PC2 revealed a distinct separation of IDC tolerant genotypes from the susceptible ones. The hierarchical clustering using five major principal components revealed seven major clusters that were mainly based on IDC response of the accessions.

Temporal dynamics of gradients of phosphorus, ammonium, pH, and electrical conductivity between a di-ammonium phosphate band and wheat roots

2002 ◽  
Vol 53 (8) ◽  
pp. 985 ◽  
Author(s):  
X. K. Zhang ◽  
Z. Rengel
Keyword(s):  
Temporal Dynamics ◽  
Ammonium Phosphate ◽  
Root Density ◽  
Plant Roots ◽  
Growth And Yield ◽  
Yield Potential ◽  
Growth Stages ◽  
Initial Growth ◽  
Horizontal Distance ◽  
Chemical Gradients

Our previous studies have demonstrated that di-ammonium phosphate (DAP) banded into soil led to a rise in pH and EC, and concentrations of NH4+ and bicarbonate-extractable phosphorus around the band. When these chemical gradients develop too close to plant roots, they may cause toxicity and stop root growth. However, the temporal dynamics of gradient development and effects on plants are not known. In this study, wheat was grown in specially constructed pots, with DAP banded 2.5 cm below the seed and either 1 or 2.5 cm horizontally from seed. Plants were harvested at different growth stages to establish the temporal variation in soil chemical gradients between the fertiliser band and the plant roots. Visual toxicity symptoms and decreased root and shoot dry weight and root length in the plants growing with DAP banded 1 cm horizontally away from seed were obvious 14 days after sowing, but disappeared after 6 weeks. Plants in that treatment had a significantly lower number of heads than control plants, implying that there was a harmful effect on reproductive growth and yield with DAP banded too close to wheat seed. The pH increased by one unit and EC increased 2-fold in the soil section containing a DAP band 14 days after sowing. By Day 63, the pH peak disappeared and the EC peak in the 1-cm horizontal distance banding treatment shifted toward soil sections containing the highest root density (4 cm away from the seed on the side opposite to where fertiliser was banded). In the 2.5-cm banding treatment, the EC peak disappeared 42 days after sowing. The ammonium peak was measured in the soil section containing the fertiliser band in the 1-cm banding treatment on Day 14, but the peak shifted to the section with the highest root density by Day 42, and disappeared completely by Day 63. The 2.5-cm banding treatment resulted in a lower ammonium peak compared with the 1-cm treatment after 14 and 42 days, and the highest concentration was found in the section with the highest root density by Day 63. Phosphorus concentration gradients were similar to those of ammonium, except that less depletion and movement of P occurred during the 63-day experiment. In conclusion, the chemical gradients around the fertiliser band show strong temporal and spatial dynamics. However, toxicity caused by close banding and hence high concentrations of ammonium in the initial growth stage results in a decreased wheat yield potential.

scholarly journals Seed primig and foliar application of plant growth regulators affect the growth and yield of okra under calcareous soils

2019 ◽  
Vol 18 (4) ◽  
pp. 25-33
Author(s):  
Muhammad T. Tahir ◽  
Muhammad A. Anjum ◽  
Muhammad Saqib ◽  
Muhammad F. Khalid ◽  
Sajjad Hussain
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Plant Height ◽  
Fruit Set ◽  
Calcareous Soils ◽  
Foliar Spray ◽  
Seed Priming ◽  
Growth And Yield ◽  
Pod Yield ◽  
Number Of Branches

A field study was conducted to evaluate the effect of different plant growth regulators (PGRs) applied through seed priming and foliar spray on growth and yield of three okra cultivars grown under calcareous soils. The cultivars of Punjab Selection and Sabzpari produced significantly higher number of branches and leaves per plant, pod length and diameter and pod yield as compared to cv. Green ferry, while, cv. Punjab selection produced significantly greater number of flowers and pods per plant as compared to other two cultivars. Seed germination (%), plant height, and fruit set (%) were not affected by the cultivars. Among the PGR treatments, seed primed with GA3 resulted in significantly higher germination percentage and greater plant height at flowering. Seed priming and foliar spray with NAA and GA3 were effective in increasing the final plant height, number of branches, number of leaves, number of flowers and number of pods per plant and fruit set (%), fresh weight per pod and pod yield. However, pod diameter, pod moisture content and dry weight per pod were not influenced by the PGR treatments applied. These results suggested that the PGRs have great potential to improve seed germination, enhance growth and increase yield of okra cultivars under calcareous soils.

scholarly journals Assessment of Weather Parameters for Groundnut (Arachis hypogaea) in Alfisols of Karnataka - a Regression Approach

Agropedology ◽  
2019 ◽  
Vol 26 (2) ◽  
Author(s):  
H.S. Shivaramu ◽  
◽  
P. Vijaya Kumar ◽  
M.B. Rajegowda ◽  
V.U.M. Rao ◽  
...  
Keyword(s):  
Maximum Yield ◽  
Field Trials ◽  
Growth And Yield ◽  
Yield Potential ◽  
Annual Rainfall ◽  
Pan Evaporation ◽  
Linear Regression Models ◽  
Growing Period ◽  
Pod Yield ◽  
Weather Parameters

In field trials of six years (2009-14) the influence of weather parameters on groundnut (The varieties: TMV-2, JL-24, K-134 and C-2) under varied sowing environments (July as normal sowing and August as late sowing months) was studied at Bengaluru, Karnataka in alfisols. Rainy days (RD), bright sun shine hours (BSS), total pan evaporation (EVP. in mm), growing degree days (GDD) and rainfall, the cumulative of all measured during crop period were found to influence significantly the growth and yield of ground nut in alfisols across the genotypes. Whereas, potential evapo-transpiration (PET) and length of growing period (LGP) during the cropping period did not show such significant influence. For achieving maximum yield, the optimum value of annual rainfall from the fitted quadratic curves, was found to be 650 mm. BSS, pan evaporation and GDD during the cropping period showed negative correlation with pod yield. Among the 11 multiple linear regression models established, model III was found to be the most reliable in judging the yield potential of groundnut in alfisols of southern Karnataka (Pod yield in kg/ha = -3058.24**+ 6.55 (RD) -2.01 ** (SSH) + 3.98* (GDD) -6.25 (evaporation in mm) + 8.01** (PET) -21.98** (LGP) + 3.38 ** (LAD) with R2 value of 0.86**. Model IV and XI were effective in predicting the yield (R2 =0.86**& 0.60**, respectively), however of the second order.

scholarly journals Cultivar Evaluation and Lipid and Protein Contents of Virginia-grown Edamame

2011 ◽  
Vol 21 (1) ◽  
pp. 131-135 ◽  
Author(s):  
Luther C. Carson ◽  
Joshua H. Freeman ◽  
Kequan Zhou ◽  
Gregory Welbaum ◽  
Mark Reiter
Keyword(s):  
United States ◽  
Seed Weight ◽  
Total Yield ◽  
Growth And Yield ◽  
Yield Potential ◽  
Potential Yield ◽  
Pod Yield ◽  
Snap Beans ◽  
Alternative Crop ◽  
High Yields

Few studies have compared the growth and yield of commercial edamame (Glycine max) cultivars in the mid-Atlantic United States. This study determined yield potential, yield components, and lipid and protein contents of five edamame cultivars [BeSweet 292 (BS292), BeSweet 2015 (BS2015), BeSweet 2001 (BS2001), Midori Giant (MG), and Sunrise (SR)] grown in Painter, VA, during 2008 and 2009. Pod yield ranged between 5002 and 7521 lb/acre. There were no differences in total yield among ‘MG’, ‘BS292’, or ‘SR’. ‘BS2015’ had the lowest yield, while the yield of ‘BS2001’ was not different from other cultivars tested. Percent marketable pods ranged from 74.3% to 85.6%, with no differences among cultivars. ‘SR’ had the greatest average seed weight in 2008 and ‘BS2001’ had the smallest; intermediate was ‘MG’, ‘BS292’, and ‘BS2001’, although ‘MG’ was not different from ‘SR’. ‘MG’ had the greatest average seed weight in 2009; there were no differences among the remaining cultivars. The cultivar lipid content was numerically lower in 2009 than in 2008 for all five cultivars. ‘BS292’ and ‘BS2001’ had the least and greatest protein concentrations with 36.1% and 38.3% in 2008, respectively. In 2009, ‘MG’ and ‘SR’ had the least and greatest protein concentrations with 35.7% and 39.5%, respectively. Edamame appears to be a viable alternative crop for Virginia with yields similar to snap beans (Phaseolus vulgaris). ‘MG’, ‘BS292’, and ‘SR’ produced consistently high yields and quality and are viable cultivar choices for the mid-Atlantic United States.

Comparative Effect of Groundnut (Arachis hypogea l.) Genotypes on Yield and N Fixation in Sudan and Northern Guinea Savannahs of Nigeria

2019 ◽  
pp. 61-67
Keyword(s):  
Agricultural Research ◽  
Cropping Systems ◽  
Block Design ◽  
Dry Weight ◽  
Field Trials ◽  
Yield Potential ◽  
N Fixation ◽  
Maize Crop ◽  
Significant Interaction Effect ◽  
Pod Yield

Recognition of high yielding and nitrogen (N) fixing groundnut genotypes and desegregating them in the cereal-based cropping systems common in savannah regions will enhance food security and reduce the need for high N fertilizers hence, minimize the high cost and associated environmental consequences. Field trials were conducted during the 2015 growing season at the Research Farms of Bayero University Kano (BUK) and Institute for Agricultural Research (IAR), Ahmadu Bello University, Samaru-Zaria to assess the yield potential and Biolog- ical N fixation in 15 groundnut genotypes (ICG 4729, ICGV-IS 07823, ICGV-IS 07893, ICGV-IS 07908, ICGV- SM 07539, ICGV- SM 07599, ICGV-IS 09926, ICGV-IS 09932, ICGV-IS 09992, ICGV-IS 09994, SAMNUT-21, SAMNUT-22, SAMNUT-25, KAMPALA and KWANKWAS). The groundnut genotypes and reference Maize crop (SAMMAZ 29) were planted in a randomized complete block design in three replications. N difference method was used to estimate the amount of N fixed. The parameters determined were the number of nodules, nod- ule dry weight, shoot and root dry weights, pod, and haulm yield as well as N fixation. The nodule dry weight, BNF, haulm, and pod yield were statistically significant (P<0.01) concerning genotype and location. Similarly, their interac- tion effect was also highly significant. ICGV-IS 09926 recorded the highest nod- ule dry weight of 2.07mg /plant across the locations while ICGV-IS 09932 had the highest BNF value of 140.27Kg/ha. Additionally, KAMPALA had the high- est haulm yield, while ICGV-IS 07893 had the highest pod yield across the loca- tions with a significant interaction effect. The result shows that ICGV-IS 07893 and ICGV-IS 09932, as well as ICGV-IS 09994 and SAMNUT – 22, were the best genotypes concerning BNF, haulm and pod yield in the Northern Guinea and Sudan Savannahs of Nigeria respectively with the potential for a corresponding beneficial effect.

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