scholarly journals Simulated drift of dicamba and 2,4-D on soybeans: effects of application dose and time

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Estevam Matheus Costa ◽  
Adriano Jakelaitis ◽  
Jacson Zuchi ◽  
Leandro Spíndola Pereira ◽  
Matheus Vinícius Abadia Ventura ◽  
...  
Keyword(s):  
Crop Yield ◽  
Yield Components ◽  
Block Design ◽  
Growth And Yield ◽  
Control Treatment ◽  
Herbicide Application ◽  
Phenological Stages ◽  
Soybean Crop ◽  
Randomized Block Design ◽  
Resistant Varieties

The use of soybean varieties resistant to the herbicides dicamba and 2,4-D may lead to drifts towards areas grown with non-resistant varieties. The aim of this study was to evaluate the effects of dicamba and 2,4-D underdoses applied at the phenological stages V4 and R2 of soybeans. Two experiments were conducted with dicamba or 2,4-D in a randomized block design with four replications. The 4 × 2 + 1 factorial scheme was composed of four doses (0.028, 0.28, 2.8, and 28 g ae ha−1) of dicamba or 2,4-D applied at two phenological stages (V4 and R2) + a control treatment (without herbicide application). Dicamba underdoses caused damage to soybean crop affecting its vegetative growth and yield; the injuries caused by 2,4-D were neither enough to damage crop nor affect yield components. Dicamba underdoses applied at V4 caused injuries of up to 41%, while in R2 they reached 70%. Plant height decreased by up to 61% when treated with dicamba. Soybean yield was reduced by 29 and 76% when the simulated drift occurred at V4 and R2, respectively, and at a dose of 28 g ae ha−1 of dicamba. For the tested underdoses, only 2,4-D had no effect in soybean crop yield.

Effectiveness of nitrogen and bio-fertilizer choice for improving growth and yield of hybrid rice (Oryza sativa L.) during dry season

2020 ◽  
Vol 57 (4) ◽  
pp. 302-309
Author(s):  
Sukanta Pal ◽  
Megha Sana ◽  
Hirak Banerjee ◽  
Lhingneikim Lhungdim
Keyword(s):  
Yield Components ◽  
Hybrid Rice ◽  
Growth Parameters ◽  
Oryza Sativa L ◽  
Block Design ◽  
Growth And Yield ◽  
Combined Application ◽  
Randomized Block Design ◽  
N Dose ◽  
Dry Seasons

Effect of nitrogen and bio-fertilizer on growth and productivity of hybrid rice (cv. PHB 71) was assessed during dry seasons of 2017 and 2018 at Research Farm of BCKV under new alluvial zone of West Bengal. The experiment was laid out in factorial randomized block design with 12 treatment combinations having 4 levels of N and 3 types of bio-fertilizer replicated thrice. Application at 180 kg N/ha produced tallest plants at 90 DAT with maximum LAI (60 DAT), DMA (90 DAT), tillers/hill (90 DAT) and CGR (30-60 & 60-90 DAT). The same N rate resulted in highest panicles/m2, panicle length, panicle weight, filled grains/panicle and 1000-grain weight. A decrease in N dose from 180 to 150 kg/ha caused reduction in all those yield components; however, the variation was non-significant except for number of panicles/m2. Maximum grain yield, straw yield and harvest index was also achieved with 180 kg N/ha accounting 120.1, 34.9 and 32.8% more than the values obtained with zero-N; however, it was statistically at par with the yields and HI obtained with 150 kg N/ha. The Azospirillum application increased all the growth parameters, yield components and yield of hybrid rice over other tested bio-fertilizers (Azospirillum > PSB > K mobilizer), accounting 5.9 and 8.8% more than the yields obtained with PSB and K mobilizer. The interaction of N and bio-fertilizer exerted significant effect on growth attributes but failed to record any significant variations in yield components and yield of hybrid rice. The maximum economic benefit was achieved with combined application of 180 kg N/ha and Azospirillum.

scholarly journals Pengaruh Pemberian Pupuk Limbah Organik Terhadap Pertumbuhan Dan Hasil Tanaman Mentimun (Cucumis Sativus L.)

2020 ◽  
Vol 19 (2) ◽  
pp. 116
Author(s):  
Widiya Satriawi ◽  
Etik Wukir Tini ◽  
Achmad Iqbal
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Control Treatment ◽  
Cucumis Sativus L ◽  
Randomized Block Design ◽  
Pineapple Peel ◽  
Washing Water ◽  
Screen House

Cucumber is one of the choices of horticultural commodities for farming activities. To increase the production of cucumber can be done by using organic waste fertilizers, such as pineapple peel waste and rice washing water. This research aims: 1) to know the best concentration of liquid organic fertilizer of pineapple peel waste for growth and yield of cucumber; 2) to know the best concentration of liquid organic fertilizer of rice washing water for growth and yield of cucumber; and 3) to know the best combination of concentration of liquid organic fertilizer of pineapple peel waste and liquid organic fertilizer of rice washing water for growth and yield of cucumber. The research was conducted at screen house located in Tambaksogra Village, Sumbang Sub-district, Banyumas Regency and the Laboratory Agronomy and Horticulture, Faculty of Agriculture, Jenderal Soedirman University, on Januari until June 2019. The experiment design used was Completely Randomized Block Design with 2 factors and 3 replication. The first factor was the concentration of liquid organic fertilizer of pineapple peel waste, namely 0, 10, 20, and 30 ml/l. The second factor was the concentration of liquid organic fertilizer of rice washing water, namely 0, 10, 20, and 30 ml/l. The results showed that: 1) the concentration 30 ml/l of liquid organic fertilizer of pineapple peel waste increased fruit weight per plant compared to the control treatment of 606,02 g : 45,48%, fruit length 15,99 cm : 9,22%, and fruit volume 163,87 ml : 13,37%; 2) the concentration liquid organic fertilizer of rice washing water did not increased the growth and yield of cucumber plants; and 3) the combination of concentrations liquid organic fertilizer of pineapple peel waste and rice washing water gave the same response to plant growth and yield.

Wheat yield as influenced by urea applied with nitrification inhibitor and gibberellic acid

2020 ◽  
Author(s):  
Rayehe Mirkhani ◽  
Mehdi Shorafa ◽  
Mohammad Zaman
Keyword(s):  
Grain Yield ◽  
Crop Yield ◽  
Stem Elongation ◽  
Block Design ◽  
Wheat Yield ◽  
Nitrification Inhibitor ◽  
Growth And Yield ◽  
Control Treatment ◽  
Yield Data ◽  
Economic Implications

<p>Among the essential plant nutrients, nitrogen (N) is the most needed. Farmer apply N fertilizer, predominantly urea to meet crop N demand. However, a greater proportion of the applied urea-N is not being used by plants and lost to the atmosphere as ammonia or greenhouse gases. Therefore, it is necessary to enhance N use efficiency (NUE) of applied urea by minimizing such losses, which has environmental and economic implications. Nitrification inhibitor, such as nitrapyrin (NP), has the most potential to minimise N losses and enhance crop yield. Similarly, plant hormones, such as GA3, has the potential to reduce abiotic stress and improve plant growth and yield.   <br>A field experiment was established on an arable site at University of Tehran, Karaj to determine the effect of urea applied with Nitrapyrin and GA3 on wheat yield in 2018-2019. Karaj has a Mediterranean climate with annual precipitation of 265 mm. A randomized complete block design in five replications was used in this study. Treatments were: T1 (control treatment - without urea), T2 (farmers practice - 138 kg N/ha), and T3 (best practice - 138 kg N/ha+NP+GA3). Urea was applied in three split applications (46 kg N/ha) at growth stage (GS 21) or tillering, (GS 32) or stem elongation, and (GS 40) or booting. GA3 in T3 treatment, was applied only at stem elongation stage. <br>The crop yield data showed that, urea applied with NP and GA3 had a significant (p ≤ 0.01) effect on grain yield, biological yield, number of grains, 1000-grain weight and % Harvest Index (%HI) compared to other treatments. Urea applied with NP and GA3 increased grain yield (10.30 t ha-1) by 13.9% and 46.1% compared to farmer practices (9.04 t ha-1) and control treatment (7.05 t ha-1). These results suggest that co-application of urea with NP and GA3 has the potential to enhance wheat yield in semi-arid area of Iran.</p>

scholarly journals Studi Sistem Tanam Jajar Legowo terhadap Peningkatan Produktivitas Padi Sawah

2017 ◽  
Vol 14 (2) ◽  
Author(s):  
Misran Misran
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Block Design ◽  
Growth And Yield ◽  
System Productivity ◽  
Randomized Block Design ◽  
West Sumatra ◽  
Optimum Productivity ◽  
Productive Tiller ◽  
Planting System

The studies of row planting system “legowo” to the increased productivity of lowland rice. This research aims to determine the best planting system in order to obtain optimum growth and yield. The experiment site in lowland farmers Piruko Sitiung, Dharmasraya district, West Sumatra, from May to September 2009. The research using a randomized block design (RBD) with 4 replications and 5 treatments planting systems, namely: (A) the Row “Legowo” 2:1, (B) the Row “Legowo” 4:1, (C) the Row “Legowo” 6:1, (D) the Row “Legowo” 8:1, and (e) Without the Row “Legowo” Control. Fertilizers are used ; 200 kg Urea, 100 kg SP36, and 50 kg KCl/ha. Urea and KCl are given three times with brocasting system at 1, 4 , and 7 weeks after planting (wap), while the SP36 is given at 1 wap combined with Urea and KCl. The seeds used Batang Piaman variety planted three seedling per hill, spacing of 25x25 cm . Data were collected on; plant height , maximum number of tillers/hill, number of productive tiller/hill, yield components, and yield. The results showed that “legowo” row planting system significantly affect the agronomic component plants, except at plant height. Against the yield components and the results also showed a marked influence on the percentage of empty grains unless and 1000 grain weight. “Legowo” row planting system can increase the yield of dry grain harvest around 19.90 to 22%. This experiment suggests that in order to obtain optimum productivity of lawland rice is recommended to use of “Legowo” row planting system. Keywords : “Legowo” row planting system, productivity, lawland rice.

scholarly journals Effect of intercropping on growth and yield of tomato (Solanum lycopersicum L.)

2021 ◽  
pp. 36-41
Author(s):  
T SONIYA
Keyword(s):  
Solanum Lycopersicum ◽  
Yield Components ◽  
Tamil Nadu ◽  
Block Design ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Area Index ◽  
Solanum Lycopersicum L ◽  
Sole Crop ◽  
Randomized Block Design

The investigation was carried out to “Study the effect of intercropping on growth and yield of tomato (Solanum lycopersicum L.)” at a farmer’s field at Sorakalnatham, Natrampalli taluk, Tirupattur district, (Tamil Nadu) during January - May 2019. The experiment was laid out in randomized block design with ten treatments replicated thrice. The treatments comprised of three intercrops viz., radish, small onion and vegetable cowpea, and three levels of recommended dose of fertilizers (RDF) viz., 100, 125 and 150 % along with sole crop of tomato under 100 % RDF. The results indicated that the maximum values for growthattributes viz., plant height at 30, 60 and 90 DAT (48.5, 63.5 and 92.1 cm, respectively), primary branches/plant (11.5), leaf area index (3.58) and yield components like fruits plant-1 (35.5), single fruit weight (82.9 g) and weight of fruits plant-1 (2.9 kg) were recorded in the plots which received 25 t FYM ha-1 + 150 % RDF in tomato + small onion intercropping system. This was followed by thetomato + vegetable cowpea intercropping system which received 25 t FYM ha-1 + 150 % RDF.

scholarly journals Effects of glyphosate and foliar fertilizers on the glyphosate resistant (GR) soybean

2019 ◽  
pp. 1251-1257
Author(s):  
César Tiago Forte ◽  
André Dalponte Menegat ◽  
Leandro Galon ◽  
Luciane Renata Agazzi ◽  
Milena Barreta Franceschetti ◽  
...  
Keyword(s):  
Glutamic Acid ◽  
Grain Yield ◽  
Block Design ◽  
Nutrient Deficiency ◽  
Grain Weight ◽  
Control Treatment ◽  
Thousand Grain Weight ◽  
Renewable Materials ◽  
Soybean Crop ◽  
Randomized Block Design

Currently the soybean crop is responsible for a great share of the protein consumed by humans and animals, it is also a source of oil and renewable materials for the industry. Due to the importance of soybeans worldwide, especially genetically modified soybeans (resistant to glyphosate - GR), the improvement in yield indexes became the targets of promising research. The objective of this work was to evaluate the responses of the “GR” soybean crop as a function of glyphosate herbicide and foliar fertilizer, under soil without nutrient deficiency. The experiment was conducted in a randomized block design with four replications, consisted of two factors. Factor A was consisted by glyphosate (1080 and 2160 g a.e ha-1) and factor B by foliar fertilizers (Fertilizer A – Mg= 5%, Mn= 0,5%, Mo= 0.5%, L-Glutamic acid= 5% and glycine betaine 3%; Fertilizer B - Zn (5%), Mn (3%), Cu (0,5%), B (0.5%) and S (4%); Fertilizer C - Mo and L-Glutamic acid). The treatments were applied isolated and in mixtures, plus the control treatment, totalizing 21 treatments. The variables evaluated were phytotoxicity at 14 and 21 DAT, a thousand-grain weight and grain yield. The analysis of variance was performed and, when significant, the comparison of groups of treatments using orthogonal contrasts was applied to all variables. Soybean yield was also compared to the means of the treatments by the Scott-Knott test (p≤0.05). Phytotoxicity was detected in the soybean crop at 14 DAT with the application of glyphosate, foliar fertilizers and the association of the two products. However, only the highest dose of glyphosate, with or without foliar fertilizers, generally reduced crop grain yield. In addition, the application of foliar fertilizers isolated and associated with glyphosate, in soils with adequate levels of nutrients, does not increase thousand-grain weight or grain. It is concluded that the glyphosate dose for soybeans should be respected and foliar fertilizers should be carefully studied before recommendation.

scholarly journals Trinexapac-ethyl application time in the crop corn agronomic performance grown under different plant arrangements

2022 ◽  
Vol 43 (2) ◽  
pp. 809-826
Author(s):  
Mariana Alves de Oliveira ◽  
◽  
Claudemir Zucareli ◽  
André Prechlak Barbosa ◽  
Leandro Teodoski Spolaor ◽  
...  
Keyword(s):  
Plant Architecture ◽  
Block Design ◽  
Growth And Yield ◽  
Row Spacing ◽  
Agronomic Performance ◽  
Application Time ◽  
Phenological Stages ◽  
Corn Crop ◽  
Randomized Block Design ◽  
Ear Height

Reduced row spacing promotes more uniform spatial distribution of plants in the field. However, the adoption of reduced row spacing only is possible with smaller plants, which may be obtained with the use of plant growth regulator. This study aimed to evaluate the agronomic performance of the first corn crop with Trinexapac-ethyl applied at the different plant development stages and grown under different row spacing, with the same plant population. The experiments were arranged in a split-plot randomized block design with four replications, with row spacing for the plots (0.45 and 0.90 m) and Trinexapac-ethyl (TE) application time to subplots (control without application, at the V3, V6, V9 and V12 phenological stages). The Trinexapacethyl application time interacted with row spacings changing the growth and yield performance of the corn crop. For 0.45 m spacing Trinexapac-ethyl application at V12 and for 0.90 m spacing application at V9 and V12 reduced plant height and ear height. Trinexapac-ethyl application at V9 for both row spacings changed the plant architecture without changing the ear length and grain yield.

scholarly journals Standardization of Varied Sowing Windows and Nitrogen Levels for Pearl Millet (Pennisetum glaucum L.) under Rainfed Conditions of Tamil Nadu

2021 ◽  
pp. 161-169
Author(s):  
M. Ramanjineyulu ◽  
V. K. Paulpandi ◽  
V. Geethalakshmi ◽  
C. Vanniarajan ◽  
N. S. Venkataraman ◽  
...  
Keyword(s):  
Yield Components ◽  
Tamil Nadu ◽  
Pennisetum Glaucum ◽  
Growth Parameters ◽  
Block Design ◽  
Maximum Growth ◽  
Growth And Yield ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Agricultural College

A field experiment was conducted during kharif-2017 at Agricultural College and Research Institute, Madurai in a factorial randomized block design. The present research was designed by nine treatment combinations considering three dates of sowing D1: II fortnight of June, D2 : I fortnight of July and D3 : II fortnight of July and three nitrogen levels N1: RDN (80 kg ha-1), N2 : 75% RDN (60 kg ha-1) and N3 : 125% RDN (100 kg ha-1) to study the growth and yield components of pearlmillet grown with variety CO (Cu) 10. The crop sown on I fortnight of July with 125 % RDN recorded maximum growth parameters, yield components and recorded significantly highest grain yield. The lowest was recorded in crop sown on II fortnight of July with application of 75% RDN.

scholarly journals Selectivity of chemical weed control systems in conventional cotton

2014 ◽  
Vol 32 (4) ◽  
pp. 827-841 ◽  
Author(s):  
J.G.Z. Arantes ◽  
J. Constantin ◽  
R.S. Oliveira Jr. ◽  
G.B.P. Braz ◽  
C.A.S. Barbosa ◽  
...  
Keyword(s):  
Control Systems ◽  
Weed Control ◽  
Crop Yield ◽  
Large Scale ◽  
Block Design ◽  
Control Measures ◽  
Herbicide Application ◽  
Randomized Block Design ◽  
Crop Cycle ◽  
Over The Top

Cotton is highly susceptible to the interference imposed by weed community, being therefore essential to adopt control measures ensuring the crop yield. Herbicides are the primary method of weed control in large-scale areas of production, and usually more than one herbicide application is necessary due to the extensive crop cycle. This study aimed to evaluate the selectivity of different chemical weed control systems for conventional cotton. The experiment took place in the field in a randomized block design, with twenty nine treatments and four replications in a split plot layout (adjacent double check). Results showed that triple mixtures in pre-emergence increased the chance of observing reductions in the cotton yield. To avoid reductions in crop yield, users should proceed to a maximum mixture of two herbicides in pre-emergence, followed by S-metolachlor over the top, followed by one post-emergence mixture application of pyrithiobac-sodium + trifloxysulfuron-sodium.

Effect of Nova Aminochelated-zinc on Growth and Yield of Rice (Oryza Sativa L.)

2019 ◽  
pp. 1-6
Author(s):  
P. Venkata Narayana ◽  
Y. Sambasiva Rao ◽  
A. Kiran Kumar ◽  
Y. Sreekanth ◽  
N. Basanth
Keyword(s):  
Oryza Sativa ◽  
Field Experiment ◽  
Yield Components ◽  
Oryza Sativa L ◽  
Block Design ◽  
Growth Yield ◽  
Growth And Yield ◽  
Maximum Height ◽  
Randomized Block Design ◽  
Yield And Yield Components

A field experiment was conducted during the kharif, 2018 to study the effect of Nova Aminochelated-Zinc on growth, yield and yield components of rice. The experiment was laid out in Randomized Block Design with six treatments T1: Control, T2: Recommended Dose of Fertilizers (RDF) without Zinc, T3: T2+5 ml l-1 Nova Ami-Zinc @TI and PI, T4:T2+2.5 gm l-1 ZnSO4 @TI and PI, T5: 5 ml l-1 Nova Ami-Zinc @TI and PI, T6: 2.5 gm l-1 ZnSO4 @TI and PI. Experiment revealed that application of RDF+5ml l-1 Nova Ami-Zinc @ TI and PI (T3) resulted in maximum Number of tillers m-2, Total number of Grains Panicle-1, Number of Filled Grains Panicle-1, Test weight and Grain Yield but application of RDF+2.5 gm l-1 ZnSO4 @TI and PI showed maximum height followed by application of RDF +5 ml l-1 Nova Ami-Zinc @ TI and PI.

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