scholarly journals Dry Matter Production and Nitrogen Uptake as Influenced by Irrigation and Nitrogen Levels in Maize

2021 ◽  
pp. 155-161
Author(s):  
B. Soujanya ◽  
B. Balaji Naik ◽  
M. Uma Devi ◽  
T. L. Neelima ◽  
Anima Biswal
Keyword(s):  
Field Experiment ◽  
Nitrogen Uptake ◽  
Dry Matter ◽  
Agricultural Research ◽  
Irrigation Scheduling ◽  
Physiological Maturity ◽  
Nitrogen Levels ◽  
Maturity Stages ◽  
Split Plot ◽  
Plot Design

A field experiment was conducted at Agro Climate Research Center, Agricultural Research Institute, P.J.T.S Agricultural University, Rajendranagar, Hyderabad, India during rabi 2019-20. The field experiment was laid out in a split plot design with three replications. The treatments comprising of three irrigation scheduling based on (Depletion of Available Soil Moisture) at 60% DASM, 40% DASM and 20% DASM as main plots and three nitrogen levels viz., 90, 180 and 240 kg N ha-1 as sub-plots. The experiment was laid out in split plot design. The results indicated that, among the different treatment combinations, the crop irrigation scheduled at 20 % DASM in conjunction with 240 kg N ha-1 accumulated significantly more dry matter of 34.2 g, 149.2 g, 233.7 g and 284.8 g plant-1, at 6th leaf, silking, dough and physiological maturity stages, respectively. The nitrogen uptake was found to be more when the crop was irrigated at 20 % DASM in conjunction with 240 kg N ha-1 (67.1 g, 231.8 g, 294.7 g and 305.3 g plant-1) at 6th leaf, silking, dough and physiological maturity stages, respectively.

scholarly journals Performance of CERES-rice model for prediction of different rice cultivars at Navsari

MAUSAM ◽  
2021 ◽  
Vol 67 (3) ◽  
pp. 691-696
Author(s):  
B. M. MOTE ◽  
NEERAJ KUMAR ◽  
D. P. NAWALKAR
Keyword(s):  
Field Experiment ◽  
Prediction Accuracy ◽  
Grain Filling ◽  
Maturity Stage ◽  
Rice Cultivars ◽  
Physiological Maturity ◽  
Nitrogen Levels ◽  
N Level ◽  
College Farm ◽  
Plot Design

Filed experiment was conducted during kharif season of 2012 at college farm of Navsari Agricultural University, (Gujarat) to investigate the CERES-Rice model validation for three rice cultivars, viz., V1 - Jaya, V2 - Gurjari and V3 - GNR-2 with three different dates of transplanting, viz., D1- 12 July, 2012, D2- 27 July, 2012 and    D3-11 August, 2012 and two nitrogen levels, viz., N1-75 kg/ha and N2-100 kg/ha. The experiment was laid out in a split plot design. The model was subsequently validated against observed data from field experiment. From the response of CERES-Rice model it was found that among the genotypes prediction accuracy for cv. Gurjari at third date of transplanting at 100 kg N level was better in respect to panicle initiation with percent error PE (-4.25%), anthesis  (-3.40%) and beginning of grain filling (1.05%). But for physiological maturity stage, cv. GNR-2 was found better at third date of transplanting at same N level with PE (-0.97%) as comparison to other treatments.  

scholarly journals Productivity of Rainfed Castor as Influenced by Plant Geometry and Nitrogen Levels

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
E. Aruna ◽  
G. Karuna Sagar
Keyword(s):  
Field Experiment ◽  
Seed Yield ◽  
Seed Weight ◽  
Agricultural Research ◽  
Research Station ◽  
High Rainfall ◽  
Nitrogen Levels ◽  
Agricultural Research Station ◽  
Planting Geometry ◽  
Plot Design

<div><p><em>Field experiment was conducted at  Agricultural Research Station, Utukur,Kadapa of Acharya N G Ranga Agricultural University to study the performance of rainfed castor  hybrid PCH 111 under varied levels of nitrogen with different planting patterns during kharif seasons of  2012 and 2013.The study was laid out in a split plot design with three replications comprising of  three planting patterns, viz.,  90 cm x 30 cm (P<sub>1</sub>), 90 cm x 45 cm (P<sub>2</sub>), 90 cm x 60 cm (P<sub>3</sub>)  and three nitrogen levels viz., 60 kg ha<sup>-1</sup> (N<sub>1</sub>), 90 kg ha<sup>-1</sup> (N<sub>2</sub>) , and 120 kg ha<sup>-1</sup> (N<sub>3</sub>). Number of spikes per plant and number of capsules per spike (58.84, 69.07 in 2012 and 2013 respectively) were more when castor was planted at 90 cm x 45 cm.  Hundred seed weight and seed yield were not significantly influenced by planting geometry. Application of 120 kg N ha<sup>-1</sup> recorded higher number of spikes per plant and capsules per spike but it was on par with 90 kg N ha<sup>-1</sup>. Seed yield was higher with application of 120 kg N ha<sup>-1</sup>  in both the years but it was on par with 90 kg N  ha<sup>-1</sup>.Comparatively higher seed yield was recorded during 2013 due to the receipt of high rainfall.</em></p></div>

scholarly journals Critical time for weed removal in dicamba tolerant soybean as influenced by pre emergence herbicides

2020 ◽  
Vol 29 (1) ◽  
pp. 55-62
Author(s):  
Darko Jovanović ◽  
Ivan Cuvaca ◽  
Jon Scott ◽  
Stevan Knežević
Keyword(s):  
Field Experiment ◽  
Growth Stage ◽  
Critical Time ◽  
Split Plot ◽  
Main Plot ◽  
Plot Design ◽  
Weed Removal

Field experiment was conducted in 2019 at Haskell Agriculture Laboratory, Concord, NE, USA. Goal of the study was to test the influence of PRE-EM herbicides on the Critical Time for Weed Removal (CTWR) in dicamba-tolerant soybean. The study was arranged in a split-plot design which consisted of four herbicide regimes as main plot treatments and seven weed removal timings as subplot treatments, with four replications. The herbicide regimes included: (1) no PRE and glyphosate, (2) acetochlor and dicamba as PRE and glyphosate as POST, (3) acetochlor and dicamba as PRE and glyphosate and dicamba as POST, and (4) acetochlor and fomesafen as PRE and acetochlor, glyphosate and dicamba as POST. The five weed removal times included the V1, V3, V6, R2 and R5, and there were also weedy and weed-free season long plots. By utilizing herbicide regimes, the CTWR was delayed to 632 GDD (until V4 soybean growth stage, 28 days after emergence) for acetochlor and dicamba as PRE and glyphosate as POST, 861 GDD (until V6 soybean growth stage, 32 days after emergence) for acetochlor and dicamba as PRE and glyphosate and dicamba as POST, and 1060 GDD (until R1 soybean growth stage, 42 days after emergence) for acetochlor and fomesafen as PRE and acetochlor, glyphosate and dicamba as POST.

scholarly journals Response of Native White Sorghum to Irrigation under Different Nitrogen-Fertility Levels and Seeding Rates in Lajas Valley, Puerto Rico

1969 ◽  
Vol 50 (2) ◽  
pp. 92-112
Author(s):  
R. Vázquez ◽  
A. Eschenwald-Hess ◽  
M. J. Martínez-Luciano
Keyword(s):  
Puerto Rico ◽  
Soil Moisture ◽  
Field Experiment ◽  
Dry Matter ◽  
Root Zone ◽  
High Moisture ◽  
Nitrogen Levels ◽  
Nitrogen Fertility ◽  
Native White ◽  
Active Root

A field experiment was conducted at Lajas Substation in order to study the effects of four irrigation and three nitrogen levels under three different seeding rates on dry-matter yields of White Native sorghum. The following irrigation treatments were tried: High moisture, plots irrigated when the average soil-moisture suction in the active root-zone reached 0.7 atm.; medium moisture, irrigated when the average soil-moisture suction reached 2.0 atm.; low moisture, irrigated when the average soil-moisture suction reached 5.0 atm., and nonirrigated plots were used as check. The nitrogen levels tested were 40, 80, and 120 pounds per acre per harvest. The seeding rates used were 10, 20, and 30 pounds per acre.

Effect of levels of irrigation and nitrogen on growth, yield and nitrogen uptake in barley

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
ARUN KUMAR ◽  
SHASHANK TYAGI ◽  
SANTOSH KUMAR DUBEY ◽  
SANJAY KUMAR
Keyword(s):  
Nitrogen Uptake ◽  
Flag Leaf ◽  
Growth Yield ◽  
Rabi Season ◽  
Straw Yield ◽  
Leaf Stage ◽  
Nitrogen Levels ◽  
Four Levels ◽  
Nitrogen Treatments ◽  
Plot Design

A field experiment was conducted during rabi season at research farm of CS Azad University of Agriculture and Technology, Kanpur, U.P. with the objective to study the effect of irrigation and nitrogen levels on growth, yield and nitrogen uptake by barley. The experiment was laid out in split plot design with three replications with treatments, comprising four levels of irrigation viz., I1= no irrigation, I2= one irrigation at tillering stage, I3= one irrigation at flag leaf stage and I4= two irrigations each at tillering and flag leaf stage in main plots and four nitrogen levels viz., N1= Control, N2= 30 kg ha-1, N3= 60 kg ha-1 and N4= 90 kg ha-1 in sub-plots. Results revealed that application of two irrigations first at tillering and second at flag leaf stage along with 90 kg nitrogen per hectare gives highest grain yield, straw yield, nitrogen content and nitrogen uptake by grain, straw and protein content as compared to other irrigations (no irrigation, one irrigation at tillering stage, one irrigation at flag leaf stage) and nitrogen treatments (0, 30 and 60 kg ha-1).

Effect of Planting-Date on Nodulation and Dry-matter Yield of Cowpea in Nigeria

1966 ◽  
Vol 2 (1) ◽  
pp. 45-47 ◽  
Author(s):  
G. P. Tewari
Keyword(s):  
Field Experiment ◽  
Dry Matter ◽  
Planting Date ◽  
Principal Factor ◽  
Day Length ◽  
Dry Matter Yield ◽  
Planting Dates ◽  
Split Plot

SummaryA split-plot field experiment was conducted to investigate the influence of planting dates on the formation of nodules in a variety of cowpea (Paraguay 6). Results indicated that the principal factor influencing both nodulation and yield was day-length, the highest number of effective nodules being produced from the June planting.

scholarly journals Effect of Harvesting Sugarcane at 12, 14, and 16 Months of Age Upon Yields at Isabela, P.R.

1969 ◽  
Vol 57 (1) ◽  
pp. 1-8
Author(s):  
S. Alers-Alers ◽  
Frank Juliá ◽  
M. A. Lugo-López
Keyword(s):  
Puerto Rico ◽  
Statistical Analysis ◽  
Field Experiment ◽  
Split Plot ◽  
Plot Design

The data presented in this paper were obtained from a field experiment conducted at Isabela in northwestern Puerto Rico, employing a split plot design in which the age of the sugarcane at harvest (12, 14, and 16 months) was tested in the main plots and eight varieties in the subplots. The varieties were: P.R. 980, P.R. 1117, P.R. 1140, P.R. 1166, P.R. 1148, P.R. 1152, P.R. 1165, and P.R. 1158. Four replications were used. A statistical analysis of the data revealed that higher sugar yields were obtained when the cane was harvested at 16 rather than at 14 or 12 months of age under the conditions prevailing at Isabela and irrespective of variety. Yields also were higher at 14 than at 12 months. These differences were highly significant.

scholarly journals Determining Optimal Dose of Chemical Fertilizer on Biofortified Bean in Sud-Kivu Highlands

2016 ◽  
Vol 9 (1) ◽  
pp. 128
Author(s):  
Casinga Clérisse ◽  
Haminosi Ghislain ◽  
Cirimwami Legrand
Keyword(s):  
Field Experiment ◽  
Crop Yield ◽  
Germination Rate ◽  
Optimal Dose ◽  
Chemical Fertilizer ◽  
Flowering Stage ◽  
Chemical Fertilizers ◽  
Negative Interaction ◽  
Physiological Maturity ◽  
Plot Design

<p>Rational application of chemical fertilizer increases crop yield of biofortified bean. This study aimed at determining the optimal dose of chemical fertilizer to apply on two biofortified bean varieties used in the community in order to maximize their yield. Following a split-plot design, a field experiment was carried out on CODMLB001 and HM21-7 varieties, in Kashusha (Kabare territory) in Sud-Kivu Highlands, after a strategic application of increasing doses of chemical fertilizer NPK 17-17-17 (D<sub>0</sub>: Control; D<sub>1</sub>: 50 kg ha<sup>-1</sup>; D<sub>2</sub>: 75 kg ha<sup>-1</sup>; D<sub>3</sub>: 100 kg ha<sup>-1</sup>; D<sub>4</sub>: 125 kg ha<sup>-1</sup> and D<sub>5</sub>: 150 kg ha<sup>-1</sup>). The said doses were applied on the sowing day in a parallel gutter at 5cm from the sowing line. The germination rate, the number of days at both the flowering stage and the stage of physiological maturity, as well as the number of harvested crops and beans per plant, number of beans per pod, weight per 1000 grains and yield were observed. Positive and negative interaction between different increasing doses of chemical fertilizers regarding the two varieties were observed. This strategic application allows increased performance according to considered varieties and doses. For instance, the HM21-7 variety gave the best performance with the D<sub>5</sub> dose, while the CODMLB001 variety did better under <em>D<sub>2</sub></em>.</p>

scholarly journals Barnyard Millet (Echinochloa frumentacea) Varieties Performance under Different Fertility Levels in Rainfed Conditions of Garhwal Himalaya, India

2020 ◽  
pp. 102-106
Author(s):  
Ajay Kumar ◽  
Arunima Paliwal ◽  
. Shikha ◽  
Radhey Shyam ◽  
S. B. Singh
Keyword(s):  
Field Experiment ◽  
Garhwal Himalaya ◽  
Recommended Dose ◽  
Barnyard Millet ◽  
Kharif Season ◽  
Rainfed Conditions ◽  
Split Plot ◽  
Two Factors ◽  
Echinochloa Frumentacea ◽  
Plot Design

A field experiment was conducted during Kharif season of 2017-18 at the College of Forestry, V.C.S.G. Uttarakhand University of Horticulture and Forestry, Ranichauri, Tehri Garhwal, Uttarakhand, India to study the effect of fertility levels on different high yielding cultivars of barnyard millet under rainfed conditions of hills of Uttarakhand. The experiment consisted of two factors viz. variety and fertilizer. The experiment had three fertility levels viz. 75% RDF (Recommended Dose of Fertilizer), 100% RDF and 125% RDF and four varieties viz. VL249, DHBMV23-3, VL172 and VL207. Total experiment has twelve treatment combinations. The three fertility levels were laid out in main plots and four varieties were in sub-plots of split plot design along with three replications. The results indicated that VL249 was the most economical high yielding cultivar of barnyard millet at 100% of the recommended dose of fertilizer with higher B:C ratio of 1.92 for rainfed conditions of Garhwal hills.

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