scholarly journals Examination of plant number and sowing date in different crop years

2014 ◽  
pp. 79-82
Author(s):  
Károly Máriás
Keyword(s):  
Plant Density ◽  
Sowing Date ◽  
Sowing Time ◽  
Main Road ◽  
Average Temperature ◽  
Yield Result ◽  
June July ◽  
Life Cycle Process ◽  
Late Sowing ◽  
Density Results

We examinated three agrotechnical factors in 2011, 2012 and 2013 (sowing time, nutrient factor and plant density), as well as five different effects of genotypes on the crop of corn, on brown soil in the Hajdúság. The experiment was set next to the 47 main road in Debrecen, at the 6th kilometre stone. In the present processing I would like to touch on the effects of sowing time and plant density, as I do not have the chance to present the whole experiment results here. It is true for all three years that the humidity factors differ from the long years’ average, so the genotypes had different reactions on it. According to our results we found out that the late sowing time’s result had the most successful crop yield result with 9975 kg ha-1, while examining the plant density the result of the highest plant density proved to be the best with 9967 kg ha-1. We take the critical season in corns’ life cycle process into consideration when examining the results: June, July and August months’ humidity and temperature markers. According to the results in the tested 3 months we had 227 mm humidity with 10 days, when the average temperature was over 25 °C. The same factors in 2012 were 135.5 mm humidity with 37 days of average temperatures of 25 °C and in 2013 we recorded 102.5 mm humidity with 24 of these days. Our goal is to help the farmers in the Hajdúság with the results of our sowing times, hybrid choice and plant density results.

scholarly journals Examination of the population density and sowing date of different maize genotypes in the Hajdúság region

2012 ◽  
pp. 111-115
Author(s):  
Károly Máriás ◽  
Péter Pepó
Keyword(s):  
Statistical Difference ◽  
Plant Density ◽  
Sowing Date ◽  
Homogeneous Field ◽  
Corn Hybrids ◽  
Sowing Time ◽  
Average Temperature ◽  
Significant Difference ◽  
Plant Densities ◽  
Late Sowing

The experiment was carried out 6 km from Debrecen, next to the main road 47 on a homogeneous field on brown forest soil. Five corn hybrids were tested in the trial (DKC 4795, DKC 4995, KWS Kornelius, NK Cobalt, PR37 N01) at three different sowing times (early – 5th April, average – 21st April, late – 10th May). At each sowing time, three different plant densities were applied (modest – 58 500 plants ha-1, average –70 200 plants ha-1, high – 82 300 plants ha-1). The agrotechnics appliedin the experiment satisfied the requirements of modern corn cultivation. In the study, the best yield result was achieved with the early sowing time out of the three examined sowing times (11 315 kg ha-1), which was significantly different (LSD5%=495 kg) from that of the average sowing time (10 690 kg ha-1), however, there was no statistically justifiable difference between the yield results of the early and the late sowing times. There was a significant difference also between the average and late sowing time. Our results indicate that the different sowing times resulted in a different flowering times. Consequently, the stands of early and late sowing time reached this critical stadium of growth under proper climatic circumstances (precipitation: 39 mm and 136 mm, average temperature at flowering: 18.1 oC and 20.3 oC), while flowering in the case of the average sowing time of 21st April was in the first half of July and the average temperature at flowering was warmer (23.2 oC) with only 10 mm precipitation.In the experiment, the plant density response was also examined. According to the measured data, four of the five hybrids responded badly to the increasing plant density. We found that the plant density of 58 500 plant ha-1 gave the largest yield results (DKC 4995 11 794 kg ha-1 – NK Cobalt 10 998 kg ha-1, average of five hybrids: 11 430 kg ha-1), while the lowest yields were obtained at the plant density of 82 300 plant ha-1 (KWS Kornelius 11 037 kg ha-1 – NK Cobalt 10 019 kg ha-1, average of five hybrids 10 720 kg ha-1). The difference between the two plant densities was significant (LSD5%=494 kg), however, the 70 200 plant ha-1 plant density did not show any statistical difference from neither the 58 500 ha-1 nor from the 82 300 plant ha-1 stands. When examining the data of the hybrids separately, we found that there was a significant difference between the average yield of the lowest and highest plant densities only in the case of three (DKC 4795, DKC 4995, NKCobalt) out of the five hybrids (DKC 4795: 11 757 kg ha-1 – 10 857 ha-1 where LSD5% =816 kg; DKC 4995: 11 794 kg ha-1 – 10 738 kg ha-1 where LSD5%=853kg; NK Cobalt: 10 998 kg ha-1 – 10 019 kg ha-1 where LSD5%=630 kg ha-1), while a  significant difference between the second and third plant densities was observed only in one case (DKC 4995: 11 726 kg ha-1 – 10 738 ha-1 where LSD5%=853 kg). In all other cases, there was no statistical difference between the differentplant densities.

scholarly journals The effect of sowing date and plant density in three maize hybrids germination and growth dynamics

2016 ◽  
pp. 105-110
Author(s):  
Ákos Tótin ◽  
Péter Pepó
Keyword(s):  
Plant Density ◽  
Growth Dynamics ◽  
Sowing Date ◽  
Research Area ◽  
Sowing Time ◽  
Maize Hybrids ◽  
Maximum Value ◽  
Set Up ◽  
Germination And Growth ◽  
Late Sowing

The maize research was set up on chernozem soil at Látókép research area of the Centre for Agricultural Sciences University of Debrecen. We examined the following hybrids SY ARIOSO (FAO 300), P9486 (FAO360), DKC 4943 (FAO 410). The experience was set u pin three different plant density. These were 60, 76 and 90 thousand plant ha-1. The experience was set up in three different sawing date, early, average and late. The germination and growing dynamic measurements was measured in three hybrid, three sawing date, three plant density in four replication. well observed at the first sawing date (April 5) the soil was too cold therefore the germination was begins very slowly to be slowly increased. The second sowing time was the average (April 21) there the germination launch as soon as possible more rapid growth in the amount of heat. We experienced the most intense germination was in the case of the emergence late sowing date (May 5). Looking at the growth dynamics for the first two sawing date was side by side and almost equal to the maximum value. This is explained by the adaptive capacity of the maize to compensate for the sawing difference. For the third time, despite the delayed sawing the maize began to grow more dynamically than in previous sawing times due to the results of the initial good conditions it growth faster than halted in the second half of the season because of the high temperatures and lack of precipitation.

scholarly journals Response of Late Sowing on the Yield and Yield Contributing Character of Different Varieties of Mustard and Rapeseed in Coastal Area of Barguna

1970 ◽  
Vol 42 (4) ◽  
pp. 441-448
Author(s):  
MA Razzaque ◽  
MR Talukder ◽  
Shaleh Uddin ◽  
SI Khan ◽  
Altab Hossain
Keyword(s):  
Coastal Area ◽  
Brassica Species ◽  
Sowing Date ◽  
Rabi Season ◽  
Sowing Time ◽  
Sowing Dates ◽  
Main Plot ◽  
Testing Site ◽  
Late Sowing ◽  
Plot Design

An experiment was carried at Multi Location Testing site Barguna to determine suitable variety of mustard (Brassica species) for the late sowing condition for the coastal area of Bangladesh during rabi season of 1998-1999 and 1999-2000. Four varieties of mustard such as Daulat, Rai-5, Improved tory-7, and Ishurdi local with four sowing dates viz.15 Nov, 23 Nov, 30 Nov. and 7 Dec. were used for the experiment. The experiment was laid out in a split plot design with sowing date in the main plot and varieties in the sub plot. The results revealed that the variety Daulat (1035 kg/ha) and Ishurdi local (1014 kg/ha) produced identically superior yield irrespective of sowing time. 15 November (1164 kg/ha) and 23 November (1002 kg/ha) recorded identically superior yield irrespect of variety. Daulat and Ishurdi local variety sowing could be delayed up to 30 November to obtain a profitable yield of (872 kg/ha) and (940 kg/ha) respectively which was still economically profitable. Key words: Mustard and rapes, Late sowing , variety, Yield, coastal area. Bangladesh J. Sci. Ind. Res. 42(4), 441-448., 2007

Impact of nutrient supply, sowing time and plant density on maize yields

2005 ◽  
Vol 53 (1) ◽  
pp. 59-70 ◽  
Author(s):  
M. Sárvári
Keyword(s):  
Moisture Content ◽  
Plant Density ◽  
Sowing Date ◽  
Nutrient Supply ◽  
Yield Stability ◽  
Sowing Time ◽  
Npk Fertilizers ◽  
Chilling Resistance ◽  
Grain Moisture ◽  
Plant Densities

In order to enhance the adaptability and yield stability of maize, the effect of nutrient supply and plant density on yield was studied on a calcareous chernozem soil in Debrecen, while the relationship between sowing date and the grain moisture content at harvest was investigated on a typical meadow soil in Hajdúböszörmény. In the plant density experiment, the plant densities applied were 45, 60, 75 and 90 thousand plants/ha. The optimal fertilizer rates for the maize hybrids were: N 40-120, P2O5 25-75, K2O 30-90 kg ha-1. The application of NPK fertilizers in a wet year increased the yield by 40-50%. Hybrids with good chilling resistance at germination can be sown as early as 10 April, when the soil temperature reaches 8-10°C. There was a significant correlation between sowing date and the grain moisture content at harvest. When hybrids with good chilling resistance at germination were sown early, the grain moisture content at harvest was reduced by 5-10%. A plant density higher than the optimum reduces yield and yield stability. The optimal plant densities determined in the experiment were 60, 75 and 90 thousand plants/ha for two, three and one hybrid, respectively.

scholarly journals Effects of the cropyear and the agronomical factors on agronomical elements of different sweet corn (Zea Mays L. convar. saccharata Koern.) genotypes in long-term experiment

2012 ◽  
pp. 105-110
Author(s):  
Ádám Lente
Keyword(s):  
Plant Density ◽  
Sweet Corn ◽  
Sowing Date ◽  
Higher Plant ◽  
Sowing Time ◽  
Sowing Dates ◽  
Long Term Experiment ◽  
Plant Densities ◽  
Fertilization Level ◽  
The University

In the crop season of 2010 (rainy year), we studied the effect of three agrotechnical factors (sowing time, fertilization, plant density) and four different genotypes on the agronomical characteristics of sweet corn on chernozem soil in the Hajdúság. The experiments were carried out at the Látókép Experimental Farm of the University of Debrecen. In the experiment, two sowing dates (27 April, 26 May), six fertilization levels (control, N30+PK, N60+PK, N90+PK, N120+PK, N150+PK) and four genotypes (Jumbo, Enterprise, Prelude, Box-R) were used at two plant densities (45 thousand plants ha-1, 65 thousand plants ha-1). The amount of precipitation in the season of 2010 was 184 mm higher, while the average temperature was 0.8 oC higher in the studied months than the average of 30 years. Weather was more favourable for sweet maize at the first sowing date, if we consider the yields, however, if we evaluate the agronomical data and yield elements (number of cobs, cob length and diameter, the number of kernel rows, the number of kernels per row) it can be stated that the size of the fertile cobs was greater at the second sowing date due to the lower number of cobs. The largest number of fertile cobs was harvested in the case of the hybrid Enterprise (72367.9 ha-1) in the higher plant density treatment (65 thousand ha-1) at the fertilization level of N120+PK when the first sowing date was applied. The largest cobs were harvested from the hybrid Box-R (cob weight with husks: 516.7 g, number of kernels in one row: 45.7) at the lower plant density (45 thousand plants ha-1) in the second sowing date treatment. Cob diameter and the number of kernel rows were the highest for the hybrid Prelude.

scholarly journals Production technology development of millet at different ecological conditions

2015 ◽  
pp. 63-67
Author(s):  
Emese Seres ◽  
Mihály Sárvári
Keyword(s):  
Production Technology ◽  
Secondary Production ◽  
Plant Density ◽  
Technology Development ◽  
Nutrient Supply ◽  
Sowing Time ◽  
Ecological Conditions ◽  
Late Sowing

The millet is a very special plant with good adaptation that gives the possibility for the late sowing and secondary production. However the effects of late sowing modifies the efficiency of the agrotechnological elements. The exainations – focused on this aspect – was conducted in the DU RINY and DU RIK in small plots in four replications in 2014. Among the examined factors (sowing time, nutrient supply, growing area) sowing time had the largest effect. The effectiveness of the agrotechnological elements decreases under unfavourable circumstances caused by the late sowing. The agrotechnical elements modifies the yields in the examined genotype. Sowing time had the biggest effect on the yields of millet. The genotype „Maxi” had the highest yield in the different treatment variations. The yield differences were significant between the sowing time and plant density variations, but the nutrient supply had not significant effect (the rate of precipitation was unfavourable in 2014 season).

scholarly journals Complex appreciation of agrotechnikal factors of sweet corn (Zea Mays L. convar. saccharata Koern.)

2010 ◽  
pp. 77-81
Author(s):  
Ádám Lente
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Plant Density ◽  
Sweet Corn ◽  
Maximum Yield ◽  
Research Station ◽  
Density Level ◽  
Chernozem Soil ◽  
Sowing Time ◽  
Late Sowing

Three agrotechnical factors (sowing time, fertilization, plant density) and the effect of two different genotypes on the yields of sweet corn was studied, in the dry and warm crop-year of 2009 on a chernozem soil in the County of Hajdúság. The experiments were carried out on the Látókép Research Station of Debrecen University. The experiment involved two sowing times (21 of April and 19 of May), six fertilizer levels (control, N30+PK, N60+PK, N90+PK, N120+PK, N150+PK) and two genotypes (Jumbo, Enterprise). Four plant density levels, 45 thousand ha-1, 55 thousand ha-1, 65 thousand ha-1 and 75 thousand ha-1 were used. In the early sowing time the highest yield was obtained with 65 thousand ha-1 plant density level and N120+PK treatment of Jumbo (18169 kg ha-1), while the maximum yield of Enterprise was 17818 kg ha-1 with 75 thousand ha-1 plant density level and N90+PK dose. In case of the late sowing time both hybrids gave the highest yield with 75 thousand ha-1 plant density level and N30 +PKtreatment, with a crop yield of 13143 kg ha-1 (Jumbo) and 14324 kg ha-1, ( Enterprise). 

Effects of sowing date, plant density and year on growth and yield of Brussels sprouts (Brassica oleracea var. bullata subvar. gemmifera)

1989 ◽  
Vol 112 (3) ◽  
pp. 359-375 ◽  
Author(s):  
A. E. Abuzeid ◽  
S. J. Wilcockson
Keyword(s):  
Solar Radiation ◽  
Dry Matter ◽  
Plant Density ◽  
Dry Weight ◽  
Sowing Date ◽  
Dry Matter Content ◽  
Bud Growth ◽  
The Difference ◽  
Total Dry Weight ◽  
Late Sowing

SummaryIn field experiments in 1983–85 in Northumberland, UK, early sowings achieved a leaf area index (LAI) of 3·5, capable of intercepting 90–95% total incident solar radiation, earlier than late sowings. As there was a close relationship between total dry weight, bud dry weight and amount of intercepted solar radiation, early sowings invariably outyielded later ones. The efficiency of energy conversion of radiation was 1·28, 2·05 and 2·11 g/MJ for total dry weight and 0·97, 0·83 and 0·67 g/MJ for bud dry weight in 1983, 1984 and 1985, respectively. Harvest index ranged from ca. 25% in 1985 to 40% in 1984.Increasing plant density from 2·22 to 6·66 plants/m2 advanced and increased maximum LAI and total and bud dry weight per m2 but had an adverse effect on distribution of dry matter. Maximum total dry weights were achieved at or slightly after maximum LAI. The onset of rapid bud growth coincided with maximum total standing dry weight and was advanced by early sowing but largely unaffected by plant density.Early-sown crops produced more buds than late-sown ones because of a longer growing season. Plant density had a large effect on the number of buds per m2, which was almost directly proportional as the number of buds per plant was not severely affected. However, individual bud size was restricted as a result of competition for assimilates. Approximately 80% of buds finally recorded had been produced before significant bud growth had occurred.Total bud fresh yields averaged over all sowing dates reached 17 t/ha in 1983 and 31 t/ha in 1984. The lower yield in 1983 was the result of late sowing caused by unfavourable weather. Early sowings significantly outyielded late ones because of earlier onset of rapid bud growth which gave a longer growing period. The effect of plant density on total sprout yield was less pronounced than that of sowing date but effects on yield per plant were large.Yields of buds in the freezing grade (20–30 mm) increased rapidly between late September and early to mid-November in both 1983 and 1984 and reached 7·5 and 8·8 t/ha, respectively. The difference between freezing-grade yields in the two years (1·3 t/ha) was much less than the difference between total yields (14 t/ha). Late sowing in 1983 restricted bud growth resulting in a higher proportion in the freezing grade. Plant density had a greater effect on freezing-grade yield than on total yield. Low planting densities gave high yields of small buds at early harvests but denser planting gave higher yields at later harvests. Generally, increases in bud fresh weight over the harvest period were greater than those in bud dry weight because of water uptake. The average dry matter content of buds declined by 2–5 % from October to January.The experiments confirmed that manipulation of sowing date and planting density is an effective way of spreading harvest date throughout the season in order to achieve an orderly sequence of crops for the fresh market and for processing.

scholarly journals Study of plant physiological parameters in winter oilseed rape (Brassica napus var. napus f. biennis L.) production on chernozem soil

2016 ◽  
pp. 111-115
Author(s):  
Éva Vincze ◽  
Péter Pepó
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Chlorophyll Content ◽  
Oilseed Rape ◽  
Plant Density ◽  
Sowing Date ◽  
Winter Oilseed Rape ◽  
Sowing Time ◽  
Area Index ◽  
Relative Chlorophyll Content

We made plant physiology examinations in Arkaso winter oilseed rape hybrid substance: relative chlorophyll content (SPAD) and leaf area index (LAI) measurements. The experiment was set in University of Debrecen Agricultural Sciences Center at Látóképi Experimental Station in four replications, in two different sowing times (I. sowing date on 08/22/2014 and II. sowing date on 09/09/2014 sowing againhappened because of the incomplete germination in the second subtance 01/10/2014) Three different plant density 200, 350 and 500 thousand ha-1, under the same nutrient supply, 45 cm row spacing. The experiment was green crop of winter wheat. The relative chlorophyll content (SPAD) and leaf area index (LAI) measurements were made in seven different times. We measured the maximum value of chlorophyll content in the first sowing time at 500, and the second sowing time at 350 thousand ha-1 plant density. The measurement results proved that there was a linear relationship between the number of plants and the LAI. The maximum leaf area index values we measured in both the sowing time at 500 thousand ha-1 reached.

scholarly journals Effet de la période et densité de semis sur la croissance et le rendement du cotonnier au Bénin

2020 ◽  
Vol 152 ◽  
pp. 15676-15697
Author(s):  
Isidore Amonmidé ◽  
Germain D. Fayalo ◽  
Gustave D. Dagbenonbakin
Keyword(s):  
Cotton Seed ◽  
Plant Density ◽  
Central Zone ◽  
Sowing Date ◽  
Sowing Time ◽  
Ecological Zones ◽  
Split Plot ◽  
Northern Zone ◽  
Seed Yields ◽  
Agro Ecological Zones

Objectif : L’objectif de l’étude était d’identifier les meilleures périodes et densités de semis dans les différentes zones agro-écologiques cotonnières du Bénin dans un contexte de changement climatique. Méthodologie et résultats : Les expérimentations ont été conduites pendant deux ans (2017 et 2018) en station au Bénin dans un dispositif expérimental en split-plot à deux facteurs, la période (facteur principal) et la densité de semis (facteur secondaire) respectivement à quatre et cinq variantes avec quatre répétitions. Les données collectées ont été soumises à une analyse de variance sous le logiciel R.3.6.1 au seuil de 5% de probabilité d’erreur. Les résultats ont montré au cours des deux années d’expérimentation que les semis tardifs ont enregistré les plus faibles rendements en coton graine dans la zone centre-nord tandis que toutes les dates de semis ont donné des rendements équivalents dans la zone nord. La densité de semis à 62500 plants/ha a donné le meilleur rendement. Conclusion et applications des résultats : Le semis du cotonnier peut s’étendre sur quatre décades (20 mai au 30 juin) dans la zone nord contrairement au centre-nord où la période optimale de semis s’étend seulement sur les deux dernières décades de juin (10-30 juin). La densité à 62500 plants/ha (0,20m x 0,80m à 1 plant/poquet) pourrait être recommandée pour l’amélioration des rendements en culture cotonnière au Bénin. L’adoption de cette densité de semis offre aux producteurs l’opportunité de mécaniser les opérations de semis et de fertilisation, compte tenu de la faible distance inter-poquets par rapport aux densités en vulgarisation. Mots clés : Période de semis, densité de semis, rendement coton graine, zones cotonnières, Bénin. Effect of sowing time and plant density on growth, development and yield in Benin ABSTRACT Objective: This study aimed at identifying the best sowing date and plant densities in the different cotton agro-ecological zones of Benin in a context of climate change. Methodology and results: On-station trials were conducted during two years (2017 and 2018) in Benin in a split-plot experimental design with two factors, the sowing date (main factor) and the plant density (secondary factor) with four and five levels, respectively with four replications. Collected data were submitted to an analysis of variance under R.3.6.1 software at 5% probability threshold error. Results showed other the two Amonmidé et al., J. Appl. Biosci. 2020 Effet de la période et densité de semis sur la croissance et le rendement du cotonnier au Bénin 15677 years of trial that late sowings recorded the lowest cotton seed yields in the northern central zone while all sowing date gave similar yields in the northern zone. Planting density of 62500 plants/ha gave the best yields. Conclusion and applications of the results: Cotton sowing could be extended over four decades (20 May to 30 June) in the northern zone contrarily to the northern central zone where the optimal sowing time covers only the last two decades of June (10-30 June). Plant density of 62500 plants/ha (0.20 m x 0.80 m at 1 plant/pot) could be recommended to improve cotton seed yields in Benin. The adoption of this new plant density offers producers the opportunity to mechanize sowing and fertilizer application, given low inter-plant space compared to the recommendation in Benin. Key words: Sowing date, plant density, cotton seed yield, cotton agro-ecological zones, Benin.

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