scholarly journals Effect of Chemical Manipulation on Growth, Yield and Fiber Traits of Compact Cotton

2020 ◽  
pp. 61-69
Author(s):  
B. Rakavi ◽  
C. N. Chandrasekhar ◽  
M. Kumar ◽  
L. Arul ◽  
N. Manikanda Boopathi ◽  
...  
Keyword(s):  
Foliar Application ◽  
Growth Yield ◽  
Root Traits ◽  
Leaf Traits ◽  
Growth Hormones ◽  
Growth Stages ◽  
Agricultural Activity ◽  
Growth Retardants ◽  
Flowering Stage ◽  
Mepiquat Chloride

Crop management is one of the most important factors in modern agricultural activity. Studying the balance of growth stages and supplying optimal quantities of mineral nutrients and hormones to growing plants is essential to improve yield in short duration cotton varieties. In recent years, several approaches have been tried to break this yield plateau. The present investigation was intended to study and improve the yield of newly released variety Co 17 (compact cotton) by foliar application of nutrients, growth hormones, growth retardants and nutrient consortium. The treatments are mepiquat chloride (0.015%), potassium silicate (0.5%), Potassium schoenite (0.5%), borax (0.3%), salicylic acid (0.01%), calcium silicate (0.5%) and TNAU cotton plus (1.25%). Foliar application of different treatments at peak vegetative and flowering stage significantly influenced the leaf traits, root traits, and yield. Nutrient consortium (TNAU cotton plus – 53% over control) and growth retardant (mepiquat chloride- 42% over control) increased the seed cotton yield.

Effect of foliar application of iron and zinc on performance of transplanted rice in middle Gangetic plains of Bihar

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
MOHAMMAD\ HASHIM ◽  
◽  
V K SINGH ◽  
K K SINGH ◽  
SHIVA DHAR ◽  
...  
Keyword(s):  
Agricultural Research ◽  
Foliar Application ◽  
Block Design ◽  
Indian Agricultural Research Institute ◽  
Ferrous Sulphate ◽  
Growth Yield ◽  
Growth Stages ◽  
Higher Plant ◽  
Gangetic Plains ◽  
Iron And Zinc

A field experiment was conducted during kharif season of 2015 and 2016 at research farmof the ICAR- Indian Agricultural Research Institute Regional Station Pusa, Samastipur, Biharto determine the foliar feeding of micronutrients (iron and zinc at different growth stages)on growth, yield and economics of rice in middle Gangetic plains of Bihar. The experimentwas laid out in randomized block design consisting of 9 treatments with 3 replications. Thetreatments consist of 0.5% spray of Zinc Sulphate and 1% spray of Ferrous Sulphate at fourdifferent growth stages i.e. 40, 50, 60 and 70 days aĞer transplanting (DAT) and one con-trol. The results shown significant increasing trends of growth, yield aĴributes and yield ofrice with four sprays of 1.0% solution of FeSO4at 40, 50, 60 and 70 days and three sprays ofZnSO4at 50, 60 and 70 days recorded significantly higher plant height, effective tillers/m2,panicle length, grains/panicle, 1,000-grain weight, biological yield, grain yield and straw yieldat maturity. These treatments also gave significantly higher net returns and benefit: cost ratioover the control.

scholarly journals Effects of calcium supply on soybean plants

2018 ◽  
Vol 9 (2) ◽  
pp. 219-225 ◽  
Author(s):  
Samuel Luiz Fioreze ◽  
Cláudia Tochetto ◽  
Antônio Eduardo Coelho ◽  
Heverton Fernando Melo
Keyword(s):  
Growth Habit ◽  
Foliar Application ◽  
Calcium Content ◽  
Growth Stages ◽  
Flowering Stage ◽  
Indeterminate Growth Habit ◽  
Determinate Growth ◽  
Calcium Supply ◽  
Soybean Plants ◽  
Soybean Leaves

This paper aims to evaluate the effects that calcium application on leaves and flowers of soybean plants exerts on yield and yield components. Two experiments were carried out in the 2013/2014 crop season under field conditions. In the first experiment, two soybean cultivars – one of determinate growth habit (BMX Ativa) and another of indeterminate growth habit (BMX Alvo) – were submitted to calcium spraying with four nozzles (twin flat, twin flat fan, cone and hollow cone). In the second experiment, soybean plants (BMX Ativa cultivar) were sprayed with calcium on the leaves and flowers at R1 or R3 growth stages. Subsequently, the plants were maintained or not under a 50-percent shade protection during flowering stage. Calcium spraying on soybean leaves or flowers during the flowering stage did not increase pod set, number of seeds, or grain yield. The calcium content in soybean flowers is not affected by foliar application thereof.

scholarly journals Growth, yield and biochemical responses of BARI chhola-9 (Cicer arietinum L.) to GA3 and rhizobium application

2018 ◽  
Vol 47 (4) ◽  
pp. 839-846
Author(s):  
Tasnia Jahan ◽  
Farhana Islam Khan ◽  
AMM Golam Adam ◽  
Hasna Hena Begum
Keyword(s):  
Protein Content ◽  
Foliar Application ◽  
Growth Yield ◽  
Dry Weight ◽  
Flowering Stage ◽  
Rhizobium Inoculation ◽  
Yield Parameters ◽  
Chlorophyll A And B ◽  
Pod Number ◽  
Number Of Seeds

A field experiment was conducted to investigate the responses of various concentrations of GA3 (10, 20, 50 ppm) and Rhizobium inoculation on growth, yield and biochemical parameters of BARI Chhola-9. Foliar application of 50 ppm GA3 resulted maximum plant height, number of primary branches per plant, shoot and root length, fresh and dry weight of shoot and root and biomass duration per plant with significant variations in case of fresh and dry weight of shoot and biomass duration. The stimulatory effect of 50 ppm GA3 on number of pods per plant, fresh and dry weight of pods per plant, number of seeds per pod, number of seeds and straw yield per plant and weight of 1000-seed eventually produced 4.76% higher yield over the control. Yield parameters of BARI Chhola-9 showed almost negative response to Rhizobium and 10 ppm treatments with a few exceptions. Pigment content of leaves also increased due to 50 ppm GA3 treatment at both vegetative and flowering stages where, significantly higher amount of chlorophyll a and b were recorded from flowering stage although statistically similar to 20 ppm GA3 treatment. However, protein content of leaves increased following Rhizobium and 10 ppm GA3 treatments at vegetative stage and to all treatments at flowering stage but, increase in protein content of seeds was recorded from Rhizobium treatment only. Out of four treatments, 50 ppm produced better yield.

scholarly journals Effect of Foliar Application of Different Organic Sources and Levels of Fertilizer on Growth Attributes, Yield Attributes, Yield, Quality and Economics of Cowpea (Vigna unguiculata L.)

2021 ◽  
Author(s):  
V.M. Sakpal ◽  
D.N. Jagtap ◽  
L. Upadhyay ◽  
S.S. Pinjari ◽  
S.S. More ◽  
...  
Keyword(s):  
Field Experiment ◽  
Vigna Unguiculata ◽  
Foliar Application ◽  
Growth Yield ◽  
Growth Stages ◽  
Yield Attributes ◽  
Yield And Quality ◽  
Cow Urine ◽  
Different Levels

Background: Productivity of cowpea in our country is very low. So, there is need to take proper agronomic practices to enhance the productivity of cowpea and foremost important among them is foliar application of organic and inorganic sources of nutrients exploiting genetic potential of crop. This is considered to be an efficient and economic method of supplementing part of nutrient requirement at critical growth stages of the crop. Foliar application is credited with the advantage of quick and efficient utilization of nutrients, elimination of losses through leaching, fixation and regulating uptake of nutrients by the plant. In view of above consideration, the experiment entitled “Influence of foliar application of different organic sources on growth, yield and quality of cowpea (Vigna unguiculata L.) under varying levels of fertilizer” was conducted with objectives to study the effect of different levels of fertilizer on growth, yield and quality of cowpea, to study the effect of foliar application of different organic sources on growth, yield and quality of cowpea, to study the interaction effect of different levels of fertilizer and foliar application of organic sources and to study the economics of different treatments. Methods: The field experiment was conducted at Agronomy Farm, College of Agriculture, Dapoli, Dist. Ratnagiri (M.S.) during Rabi 2019-20. Field experiment was laid out in factorial randomized block design. The fertilizer levels comprised of three levels viz., F1: 100% RDF, F2: 75% RDF and F3: 50% RDF and foliar application consisted of five different organic sources viz., S0: Control, S1: Panchagavya @ 3%, S2: Vermiwash @ 10%, S3: Cow urine @ 5% and S4: Vasant urja @ 0.5%. There were 15 treatment combinations replicated three times. Result: It can be concluded that for growing cowpea, it should be supplied with 100% RDF and sprayed with panchagavya @ 3% or cow urine @ 5% foliar application, so as to obtain higher yield and economic returns.

scholarly journals The Effect of Salicylic Acid on the Performances of Salt Stressed Strawberry Plants, Enzymes Activity, and Salt Tolerance Index

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 775
Author(s):  
Alaa El-Den Roshdy ◽  
Abdullah Alebidi ◽  
Khalid Almutairi ◽  
Rashid Al-Obeed ◽  
Ahmed Elsabagh
Keyword(s):  
Salicylic Acid ◽  
Foliar Application ◽  
Growth Yield ◽  
Tolerance Index ◽  
Mean Values ◽  
Enzymes Activity ◽  
Salinity Response ◽  
Negative Effect ◽  
Positive Treatment ◽  
Salt Tolerance Index

The influence of salicylic acid (SA) on growth, yield, fruits’ quality and enzymes’ activities was monitored in strawberry plants cv. Camarosa grown under salinity stress via two pot experiments in two successive years of 2018 and 2019. The examined concentrations of SA were 30, 60, and 90 ppm, which foliary applied in addition to control (sprayed with water), while the used levels of salinity were 20, and 40 mM as NaCl as irrigation application in addition to control (without salinity). The results showed a significant effect of salinity at 40 mM where the mean values of shoot fresh and dry weights, chlorophyll, leaves’ NPK, yield plant−1, yield ha−1, and fruits’ ascorbic acid were significantly decreased. However, the 40 mM salinity resulted in a significant increase in leaves’ content of Na and proline as well as catalase (CAT) and peroxidase (POD) enzymes’ activity and the fruits’ TSS and acidity. The application with 90 ppm SA was found to be the most significant positive treatment for all of the studied characters except the Na leaves’ content. Regarding tolerance index percentages (STI%), the high values of CAT, POD, and proline referred to the ability to use them as indicators for strawberry salinity response in other physiological and plant breeding studies. The findings of this study suggest that the 90 ppm SA foliar application can ameliorate the negative effect of salinity on the growth of strawberry cv. Camarosa.

scholarly journals Effects of Irrigation Deficit and Application of Some Growth Regulators on Defense Mechanisms of Canola

2015 ◽  
Vol 43 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Seyed Ahmad KALANTAR AHMADI ◽  
Ali EBADI ◽  
Jahanfar DANESHIAN ◽  
Soodabeh JAHANBAKHSH ◽  
Seyed Ataollah SIADAT ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Deficit Irrigation ◽  
Defense Mechanisms ◽  
Agricultural Research ◽  
Foliar Application ◽  
Maximum Activity ◽  
Flowering Stage ◽  
Relative Water ◽  
Irrigation Deficit ◽  
Main Factor

A split-plot experiment arranged in a randomized complete blocks design with three replications was carried out in Safiabad Agricultural Research Center of Dezful in order to investigate the effects of foliar applications of ascorbic acid (AsA), salicylic acid (SA) and methanol (Me), under deficit irrigation conditions, in canola; there were 3 levels of irrigation as the main factor (irrigation after 70 mm evaporation from the pan as control, cessation of irrigation at the flowering stage and cessation of irrigation at the appearance of siliques) and 10 levels of foliar applications as sub-factor (100, 200 and 300 mg.l-1AsA; 100, 200 and 300 µM SA; 10, 20 and 30% (w/v) methanol; and foliar application of distilled water as control). Foliar applications were made during both budding and initiation of flowering stages. Results indicated that antioxidant enzymes showed different responses to deficit irrigation and foliar application treatments. Maximum catalase (CAT) and polyphenol oxidase (PPO) activities were observed under cessation of irrigation at flowering stage and foliar application of 300 µM SA, while ascorbate peroxidase (APX) reached its maximum activity under the same irrigation conditions and foliar application of 300 mg.l-1AsA. SA had more influence to increase in CAT and PPO activity under cessation of irrigation at flowering stage. The relative water content (RWC) was also decreased due to the drought stress caused by the cessation of irrigation. Foliar application of SA (100 μM) and Me (10% w/v) had more influence to maintain RWC compared to ascorbic acid under irrigation cessation at flowering stage.

scholarly journals Variability of root traits in common bean genotypes at different levels of phosphorus supply and ontogenetic stages

2014 ◽  
Vol 38 (4) ◽  
pp. 1170-1180 ◽  
Author(s):  
Roberto dos Santos Trindade ◽  
Adelson Paulo Araújo
Keyword(s):  
Common Bean ◽  
Root Length ◽  
Root Traits ◽  
Growth Stages ◽  
Phenotypic Variance ◽  
Root Mass ◽  
Root Area ◽  
Ontogenetic Stages ◽  
Growth Habits ◽  
Selection Of

Selection of common bean (Phaseolus vulgaris L.) cultivars with enhanced root growth would be a strategy for increasing P uptake and grain yield in tropical soils, but the strong plasticity of root traits may compromise their inclusion in breeding programs. The aim of this study was to evaluate the magnitude of the genotypic variability of root traits in common bean plants at two ontogenetic stages and two soil P levels. Twenty-four common bean genotypes, comprising the four growth habits that exist in the species and two wild genotypes, were grown in 4 kg pots at two levels of applied P (20 and 80 mg kg-1) and harvested at the stages of pod setting and early pod filling. Root area and root length were measured by digital image analysis. Significant genotype × P level and genotype × harvest interactions in analysis of variance indicate that the genotypic variation of root traits depended on soil nutrient availability and the stage at which evaluation was made. Genotypes differed for taproot mass, basal and lateral root mass, root area and root length at both P levels and growth stages; differences in specific root area and length were small. Genotypes with growth habits II (upright indeterminate) and III (prostrate indeterminate) showed better adaptation to limited P supply than genotypes of groups I (determinate) and IV (indeterminate climbing). Between the two harvests, genotypes of groups II and III increased the mass of basal and lateral roots by 40 and 50 %, respectively, whereas genotypes of groups I and IV by only 7 and 19 %. Values of the genotypic coefficient of determination, which estimates the proportion of phenotypic variance resulting from genetic effects, were higher at early pod filling than at pod setting. Correlations between shoot mass and root mass, which could indicate indirect selection of root systems via aboveground biomass, were higher at early pod filling than at pod setting. The results indicate that selection for root traits in common bean genotypes should preferentially be performed at the early pod-filling stage.

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