Evaluation of time and dose of imazethapyr in controllingweeds of chickpea (Cicer arietinum L.)

2017 ◽  
Author(s):  
Pandit S. Rathod ◽  
D.H. Patil ◽  
B.M. Dodamani
Keyword(s):  
Dry Matter ◽  
Agricultural Research ◽  
Dry Weight ◽  
Research Station ◽  
Cicer Arietinum L ◽  
Time Of Application ◽  
Net Returns ◽  
Application Rates ◽  
Hand Weeding ◽  
Different Doses

A field experiment was conducted during the post rainy (rabi) seasons of 2012-13 and 2013-14 at Agricultural Research Station, Gulbarga (Karnataka) to evaluate the time and dosage of imazethapyr in chickpea. The experiment was laid out with 12 weed-control treatments, viz. imazethapyr at 3 application rates (15, 20 and 30 g/ha) sprayed at 10 and 20 and 30 days after germination (DAG), pendimethalin 0.75 kg/ha + one hand weeding at 25-30 DAS, weed free check and weedy check. Among the treatments, weed free check recorded significantly higher seed yield (1287 kg/ha), net returns (Rs. 29080/ha) and B:C ratio (2.30) and minimum weed dry weight and higher WCE (100%) followed by pre emergence application of pendimethalin 0.75 kg/ha + one hand weeding at 25-30 DAS. Among the different doses and time of application of imazethapyr, application of imazethapyr 30 g/ha at 10 DAG resulted in 57.9% higher grain yield (1098 kg/ha), lower weed dry matter (6.88 g/0.5 m2) and higher WCE (75.33%) over unweeded control and other treatments. Imazethapyr 30 g/ha at 10 DAS also recorded the highest net returns (Rs.22780/ha) and B: C ratio (2.08), which was closely followed by imazethapyr 20 g/ha sprayed at 10 DAG, 20 DAG and imazethapyr 30 g/ha at 30 DAG.

Productivity augmentation of greengram (Vigna radiata) through weed management

2018 ◽  
Author(s):  
S. P. Singh ◽  
R. S. Yadav ◽  
Amit Kumawat ◽  
R. R. Jakhar
Keyword(s):  
Weed Management ◽  
Agricultural Research ◽  
Block Design ◽  
Research Station ◽  
Area Index ◽  
Leaf Stage ◽  
Net Returns ◽  
Randomized Block Design ◽  
Hand Weeding ◽  
Weeds Control

A field experiment was conducted at Research Farm of Agricultural Research Station, Swami Keshwanand Rajasthan Agricultural University, Bikaner during three consecutive kharif season of 2013, 2014 and 2015. The experiment comprising ten weeds control treatments consisting of pendamethalin 1000 g/ha (PE), imazethapyr 50g/ha (3-4 leaf stage of crop), imazethapyr 70g/ha (3-4 leaf stage of crop), pendamethalin + imazethapyr 800g/ha (PE), pendamethalin + imazethapyr 900g/ha (PE), pendamethalin + imazethapyr 1000g/ha (PE), imazethapyr + imazamox 60g/ha (3-4 leaf stage of crop), imazethapyr + imazamox 70g/ha (3-4 leaf stage of crop), 2 hand weeding at 20 and 40 DAS and weedy check in randomized block design (RBD) with three replications. Two hand weeding at 20 and 40 DAS was found most effective to control weeds in greengram and recorded lowest weed count and weed dry matter of both broad leaved and grassy weeds. It was also recorded significantly highest branches/pant, leaf area index, total chlorophyll, protein content in seed, pods/plant, seeds/pod and seed, straw and biological yield over other treatments. Among different herbicides, pendamethalin + imazethapyr 800g recorded significantly higher net returns (31350/ha) and B:C ratio (2.70).

scholarly journals Effect of Chemical Herbicides on Weed Management in Allium sativum L. (Garlic) and Its Yield

2020 ◽  
pp. 279-287
Author(s):  
T. Ganapathi ◽  
M. R. Ravikumar ◽  
G. R. Rajakumar
Keyword(s):  
Weed Management ◽  
Allium Sativum ◽  
Agricultural Research ◽  
Dry Weight ◽  
Research Station ◽  
Fresh Weight ◽  
Weed Density ◽  
Number Of Leaves ◽  
Hand Weeding ◽  
Quizalofop Ethyl

A field experiment was conducted during 2015-16, 2016-17 and 2017-18 at Agricultural Research Station, Hanumanamatti, Ranebennur (Tq), Haveri (Dist.) Karnataka, to study the effect of chemical herbicides on weed management in garlic. The treatments consisted of pre emergent application of Pendimethalin, Oxyfluorfen, Quizalofop ethyl and Butachlor. The pooled mean results indicated that, pre-emergent  application of Butachlor 50 EC @ 1.0 kg ai/ha + one  hand weeding + second spray at 30 days after planting (B1HW2S:T7) recorded the least weed density (82.83, 89.67 monocot weeds and 8.15, 6.34 dicot weeds), weed bio-mass (80.99g, 93.33g fresh weight of  monocot weeds and 8.48g, 1.82g fresh weight of dicot weeds, 32.40g, 37.33g dry weight of monocot weeds and 3.39g,  0.73g dry weight of dicot weeds), the highest garlic plant height  (4.34cm, 16.17 cm), number of leaves (3.55, 6.57) at 30 and 60 days after planting respectively. Treatment with Butachlor 50 EC @ 1.0 kg ai/ha + one  hand weeding + second spray at 30 days after planting (B1HW2S:T7) also recorded the highest hundred bulb weight (912.98 g), yield per plot (2056.63g) and yield/ha (41.13 Q) followed by Oxyflurofen 23.5 EC @  0.15 kg ai /ha + one hand weeding + second spray at 30 Days after planting (O1HW2S:T4) compared to farmer’s practice (2HW:T8) and untreated control (WC:T9).

scholarly journals Efficacy of Defoliants on Yield and Fibre Quality of American Cotton in Semi-Arid Conditions

2019 ◽  
Author(s):  
T. Raghavendra ◽  
Y. Rama Reddy
Keyword(s):  
Agricultural Research ◽  
Fibre Length ◽  
Fibre Strength ◽  
Research Station ◽  
Time Of Application ◽  
Arid Conditions ◽  
Application Rates ◽  
Fibre Fineness ◽  
Plot Design

The study was conducted for exploring the effect of Dropp ultra and Ethrel, their application rates and time of application on two American cotton cultivars. The experiment was carried out at Regional Agricultural Research Station, Nandyal with cultivars NH615 and Sivanandi for two consecutive seasons from 2015-2017 in split plot design with three replications. Application of defoliants like Dropp ultra SC (Thidiazuron 360 + Diuron 180) 200 and 250 ml/ha, Ethrel 1500, 2000 and 3000 ppm were carried at 120 and 140 days after sowing respectively. The results of the study indicated that defoliation with Dropp ultra 250 ml/ha recorded higher percentage of defoliation (92.3) and higher seed cotton yield (2207 kg/ha). Application of defoliants at 140 days after sowing significantly recorded higher yields. There was no difference between the treatments in terms of fibre length and fibre strength. However fibre fineness and uniformity ratio were significantly affected by application of defoliants.

scholarly journals Impact of Integrated Weed Management Practices on Yield and Economics of Semidry Rice

2020 ◽  
pp. 25-32
Author(s):  
V. Soujanya ◽  
M. Goverdhan ◽  
T. Ram Prakash ◽  
A. Srinivas
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Agricultural Research ◽  
Dry Weight ◽  
Integrated Weed Management ◽  
Research Station ◽  
Weed Density ◽  
Weight Yield ◽  
Chlorimuron Ethyl ◽  
Hand Weeding

A field experiment was conducted during Kharif, 2019 at Agricultural Research Station, Rajendranagar, Hyderabad to study the effect of integrated weed management practices on weed density, weed dry weight, yield and economics of semidry rice. Among all the treatments pyrazosulfuron ethyl @ 20 g a.i ha-1 fb chlorimuron ethyl + metsulfuron methyl @ 4 g a.i ha-1 + fenoxaprop-p-ethyl @ 60 g a.i ha-1 fb mechanical weeding at 50 DAS recorded significantly lower weed density, weed dry weight with highest weed control efficiency. Grain yield and B:C ratio were also recorded highest from the same treatment in semidry rice system of cultivation. This treatment was statistically comparable with hand weeding plot.

scholarly journals Influence of Pre-Emergence Weedicides on Turmeric (Curcuma longa L.) Growth and Yield

2020 ◽  
pp. 272-278
Author(s):  
T. Ganapathi ◽  
M. R. Ravikumar ◽  
G. R. Rajakumar
Keyword(s):  
Weed Management ◽  
Agricultural Research ◽  
Curcuma Longa ◽  
Dry Weight ◽  
Leaf Length ◽  
Growth And Yield ◽  
Research Station ◽  
Fresh Weight ◽  
Hand Weeding ◽  
Quizalofop Ethyl

A field experiment was conducted during 2015-16, 2016-17 and 2017-18 at Agricultural Research Station, Hanumanamatti to study the effect of chemical herbicides on weed management in turmeric. The treatments consisted of pre emergent application of Alachlor, Butachlor, Pedimethalin, Atrazine and Quizalofop ethyl. The pooled mean results indicated that, pre-emergent application of Alachlor @ 1.50 kg ai / ha + one interculture + one hand weeding (A1IC1HW) recorded the least weed density (13.67, 68.11 monocot weeds and 2.67,12.36 dicot weeds), weed bio-mass (32.33 g, 43.67 g fresh weight of monocot weeds and 5.68 g, 26.05 g fresh weight of dicot weeds, 17.50g, 7.68g dry weight of monocot weeds and 2.34 g, 10.69 g dry weight of dicot weeds), the highest turmeric plant height (11.35 cm, 32.49 cm), number of leaves (4.92, 8.39), leaf length (5.08 cm, 18.91cm), leaf breadth (2.21 cm, 7.25 cm) and number of tillers per plant (1.01, 4.34) at 30 and 60 days after planting respectively. The treatment with Alachlor @ 1.50 kg ai / ha + one interculture + one hand weeding (A1IC1HW) also recorded the highest yield per plot (65.03 kg), rhizome yield/ha (43.36 tonnes) and processed rhizome yield (8.67 t/ha) followed by Pendimethalin @ 1.00 kg ai/ha + one interculture + one hand weeding (P1IC1HW) compared to farmer’s practice (2HW1IC) and unweeded control (WC).

Biofortification of Zn and Fe in Chickpea through Agronomic Intervention in Medium Black Soils of Karnataka

2020 ◽  
Author(s):  
Pandit S. Rathod ◽  
D.H. Patil ◽  
S.B. Bellad ◽  
Rachappa V. Haveri
Keyword(s):  
Seed Treatment ◽  
Dietary Diversity ◽  
Agricultural Research ◽  
Research Station ◽  
Nutritional Security ◽  
Foliar Fertilization ◽  
Pooled Data ◽  
Net Returns ◽  
Better Than ◽  
Plot Design

Background: Bio-fortification, the process of integrating nutrients into food crops, provides a sustainable and economic way of increasing the density of micronutrients in important staple crops. Agronomic bio-fortification is the easiest, practicable and fastest way for bio-fortification of pulse grains with Fe, Zn, or other desirable micronutrients. Increasing micronutrient rich foods and improving dietary diversity will substantially reduce micronutrient disorders.Methods: A field experiment was conducted during the post rainy seasons of 2015, 2016 and 2017 at Zonal Agricultural Research Station, Kalaburagi, University of Agricultural Sciences, Raichur (Karnataka) to know the effect of soil and foliar fertilization of Zn and Fe on chickpea genotypes. Two genotypes (Annigeri 1 and JG 11) and six fertilization treatments (Control, 0.5% Zn, 0.1% Fe, Zn + Fe, seed treatment with 2 g Zn kg-1 seeds and soil application of Zn) were tested in medium black soils in split plot design with three replications.Result: The pooled data of three seasons indicated that the genotype JG 11, performed better than Annigeri 1 in terms of seed yield (1309 kgha-1), net returns (₹ 31634ha-1) and B: C ratio (2.52). On biofortification of Zn and Fe, foliar fertilization of Zn @ 0.5% + Fe @ 0.1% at flowering stage recorded significantly higher grain yield (1321 kgha-1), net returns (₹ 31179ha-1) and B: C ratio (2.44) over rest of the treatments. Further, foliar fertilization of Zn + Fe had significant influence on nutrient concentration (Zn and Fe) in chickpea grains. Thus, it could be concluded that combined biofortification of Zn + Fe to chickpea crop could be the viable agronomic intervention for getting higher productivity and nutritional security.

scholarly journals THE INFLUENCE OF SPRAYING WITH POTASSIUM SILICATE AND IRRIGATION WITH SALINE WATER IN SANDY SOIL ON Calendula officinalis L.

2019 ◽  
pp. 39-56
Keyword(s):  
Agricultural Research ◽  
Saline Water ◽  
Tap Water ◽  
Block Design ◽  
Foliar Spray ◽  
Dry Weight ◽  
Potassium Silicate ◽  
Research Station ◽  
Calendula Officinalis ◽  
Calendula Officinalis L

Two pots experiments were conducted at the Experimental Farm of El-Qassasin Horticultural Research Station, Agricultural Research Center, Ismailia Governorate, Egypt, during two successive seasons of 2016/2017 – 2017/2018, to investigate the effect of potassium silicate at (0, 4, 6, and 8 cm3/l) as a foliar spray under different levels of water salinity (tap water, 1000, 2000 and 3000 ppm) on Calendula officinalis L. plant. The experiment was performed in complete randomized block design as factorial experiment with 3 replicates. The obtained results cleared that using salinity levels decreased growth parameters (plant height, number of branches/plant, fresh and dry weights of herb/plant), flowering parameters (flower diameter, number of flowers/plant, fresh and dry weight of flowers (g/plant) during eight cuts and fresh and dry weight of flowers (g/plant/season)) and chemical constituents (chlorophyll a, chlorophyll b, carbohydrate and carotenoid contents) compared to control. Moreover, the highest values in these parameters were registered by potassium silicate at 8 cm3/l concentration. Proline content increased in leaves with using saline water at 3000 ppm + potassium silicate at 8 cm3/l. Generally, it could be concluded that potassium silicate at 8 cm3/l, showed a uniform impact in alleviating inhibition of Calendula officinallis L. plant growth and productivity under moderate salinity stress condition.

scholarly journals IMPACT OF PLANT GROWTH INHIBITORS ON THE GROWTH AND YIELD OF SORGHUM

2021 ◽  
Vol 52 (6) ◽  
pp. 1431-1440
Author(s):  
N. M. Abood ◽  
E. M. SHALAL ◽  
M. I. HAMDAN
Keyword(s):  
Plant Growth ◽  
Dry Matter ◽  
Agricultural Research ◽  
Block Design ◽  
Growth And Yield ◽  
Control Treatment ◽  
Research Station ◽  
Dry Matter Yield ◽  
Growth Inhibitors ◽  
Plant Growth Inhibitors

Field experiment was carried out during the spring and fall seasons of 2019 at the Abu Ghraib Research Station of the Agricultural Research Office/ Ministry of Agriculture, was aimed to investigate the effect of plant growth inhibitors on growth and yield of several sorghum varieties .Randomized Complete Block Design within split plot arrangement with three replications was used. The main plot consists of three growth inhibitors (Cycocel, Ethiphon, and Mebiquat), which were added at stages six and eight leaf stage, in addition to the control treatment (distilled water only), the sub plot was included three cultivars (Mabrouk, Buhooth 70 and Giza 113). The results showed in both seasons significant interaction between cultivars and growth inhibitors in most of the studied traits. The plants of the variety Giza 113 sprayed with Ethiphon recorded the lowest period of reaching physiological maturity, the highest average dry matter yield, and the highest weight of 1000 grains (89.00 days, 17.32 ton ha-1, and 39.33 gm) respectively. The same variety recorded the highest content of chlorophyll in the leaves and the highest grain yield due to the effect of Mebiquat (49.50 spad, 3.93 ton ha-1. The cultivar Buhooth 70 with the effect of Cycocel achieved the highest average of dry matter yield of 33.27 ton ha-1.

Effect of plant density and detopping following silking on cob growth, fodder and grain yield of maize (Zea mays)

1992 ◽  
Vol 119 (3) ◽  
pp. 297-301 ◽  
Author(s):  
S. K. Roy ◽  
P. K. Biswas
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Plant Density ◽  
Agricultural Research ◽  
Dry Weight ◽  
Research Station ◽  
Maize Crop ◽  
Significant Difference ◽  
Fodder Yield ◽  
Stem Reserves

SUMMARYMaize was grown al the Regional Agricultural Research Station, Hathazari, Bangladesh during 1988/89 and 1989/90 to study fodder yield, cob growth and grain yield together with the contribution of pre-silking stem reserves to grain. Population densities were 33300, 44400 and 66600 plants/ha. Plants were either detopped after silking and pollen shedding, keeping 0, 2 or 3 leaves above the cob, or were left entire.The results showed that the maize crop could successfully be detopped for fodder with little or no adverse effect on grain yield. Fodder yield increased with increased plant density and among the detopping treatments the highest fodder yield was obtained when the plants were detopped just above the cob. Cob growth followed a sigmoid pattern and the highest dry weight per cob was obtained from the lowest plant density and from entire plants. The number of cobs/m2 increased with increased plant density but detopping treatments did not give any significant difference in relation to densities. The number of grains/cob was highest with 33300 plants/ha but, among the detopping treatments, plants detopped just above the cob had the lowest number of grains/cob in both years. Weight of 1000-grain decreased with increasing plant density but it was increased by detopping plants just above the cob during 1988/89, although it was decreased in 1989/90. The highest apparent translocation of pre-silking reserves was obtained using densities of 44400 plants/ha but detopping treatments did not show any consistent effect, although the highest apparent translocation (20%) and harvest index (58%) were obtained from plants detopped just above the cob.

Response of fieldpea (Pisum sativum L. var arvense) to various planting methods, irrigation schedule and weed management practices

2015 ◽  
Author(s):  
Brijbhooshan ◽  
V. K. Singh ◽  
Shalini
Keyword(s):  
Grain Yield ◽  
Nutrient Uptake ◽  
Weed Management ◽  
Dry Matter ◽  
Management Practices ◽  
Dry Weight ◽  
Yield Attributes ◽  
Planting Methods ◽  
Raised Bed ◽  
Hand Weeding

A field experiment was conducted during rabi seasons of 2007-08 and 2008-09 on mollisols at G.B. Pant University of Agriculture & Technology, Pantnagar to study the performance of fieldpea (Pisum sativum L.var arvense) under different planting methods, irrigation levels and weed management practices. Results revealed that growth attributes as plant height, number of branches and dry matter accumulation per plant, number and dry weight of nodules per plant, density and dry matter of weeds/unit area, nutrient uptake and yield attributes as pods/plant, 1000-grain weight, grain yield/plant and grain yield of fieldpea were significantly higher under raised bed planting as compared to flat bed. Planting on raised bed increased grain yield of fieldpea by 17.5% over flat bed. Two irrigations applied at critical stages i.e. pre-flowering and pod formation proved promising in increasing the growth, nutrient uptake, yield attributes and grain yield of pea. One hand weeding done at 25 days after sowing (DAS) reduced the density and dry matter of weeds significantly and one hand weeding done at 25 DAS increased the values of growth attributes, number and dry weight of nodules, nutrient uptake, yield attributes and grain yield as compared to pendimethalin 1.0 kg a.i./ha applied as pre-emergence and weedy check.

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