scholarly journals Effect of season and sowing time on the moisture loss dynamics and yield of maize

2007 ◽  
pp. 255-265
Author(s):  
Zsuzsa Molnár ◽  
Mihály Sárvári
Keyword(s):  
Moisture Content ◽  
Vegetation Period ◽  
Sowing Date ◽  
High Yield ◽  
Water Release ◽  
Seed Moisture Content ◽  
Area Index ◽  
Seed Moisture ◽  
Sowing Dates ◽  
Very High

The effect of sowing date on maize development and yield was studied in field experiments. The experiment was set up at the experimental garden of the University of Debrecen Centre of Agricultural Sciences Faculty of Agriculture, Department of Plant Sciences in 2005 and 2006 on calcareous chernozem soil. Six hybrids with different genetic characteristics and vegetation period were tested (Sze 269, DK 440, PR37D25, NK Cisko, Mv Maraton, PR34B97) at three different sowing dates.2005 was a very wet year. The amount of precipitation in the vegetation period was about 150 mm higher than the average of 30 years. No significant differences were observed in temperature. However, the number of sunny hours was much lower during the summer than as usual. This had an influence on yields.In 2006, there was no risk of inland water in spite of the large amount of precipitation at the beginning of the year. The amount of water available for plants was satisfactory during the season due to the favorable amount of precipitation. Therefore, plants suffered less from the heat in July. However, hail on 22 July caused significant damage. The number of sunny hours in the summer was high enough. The warm, dry autumn helped the water release of plants.In 2005, the results of the third sowing date could not be evaluated due to the large number of missing plants. The yield of hybrids ranged between 12-14 t/ha for the first sowing date. For the second sowing date, yields ranged between wider boundaries. The hybrid PR37D25 has a very high yield in the case of the second sowing date, and its seed moisture content was favorably low. The yield of hybrid PR34B97 was the lowest at the later sowing date, the prime reason of this was damage caused by Diabrotica virgifera. The seed moisture content at harvest varied between 16-24% for the first sowing date. In the case of the second sowing date, higher values were measured. Hybrids Sze 269 and NK Cisko had favorable water release characteristics. The maximum value of leaf area index was the best in the case of the first sowing date (5-5.5 m2/m2).In 2006, yields for the first sowing date ranged between 8-10 t/ha. At the second sowing date, more favorable results were obtained. The reason for this is probably that hail caused a higher damage in hybrids with the early sowing date. Plant stock with later sowing date could recover more successfully. Hybrid PR37D25 had very high yields for the second and third sowing dates. The high-yielding hybrid PR34B97 also had high yield, but this was accompanied by higher seed moisture content. Due to the warm, sunny autumn weather, the hybrids had good water-release dynamics and were harvested with a lower seed moisture content than in the previous year. For the first sowing date, the seed moisture content was around 13-14% except for hybrid PR34B97. For the second and third sowing dates, higher values were observed. Leaf area index was significantly reduced in August for all three hybrids due to the hail in July. For the first two sowing dates, the leaves of hybrid Sze 269 were the first to dry similarly to the previous year.Year had a strong effect on the results in both years.

Effects of drilling date on the growth and yield of sunflower (Helianthus annum) in the UK

1992 ◽  
Vol 119 (2) ◽  
pp. 197-204 ◽  
Author(s):  
F. L. Dixon ◽  
P. J. W. Lutman
Keyword(s):  
Moisture Content ◽  
Sowing Date ◽  
Growth And Yield ◽  
Research Station ◽  
Optimum Time ◽  
Seed Moisture Content ◽  
Early Maturity ◽  
Seed Moisture ◽  
Ashton Research Station ◽  
The Uk

SUMMARYThe growth and yield of five cultivars of sunflower (Frankasol, Cerflor, Sunbred 246, Sokota 2057 and Sigco EX 10), sown from the end of March to the beginning of May, were studied in three experiments at Long Ashton Research Station, UK, during 1986, 1987 and 1988. The time from sowing to emergence and to maturity (as assessed by seed moisture content) was shortened by later drilling, although earlier sown crops were still ready for harvest slightly before the later sown ones. Cultivars differed in speed of development; Frankasol and Cerflor were the slowest to develop and Sigco EX 10 the fastest. Plant heights, head diameters and yields were all affected more by cultivar than by sowing date. The slower maturing cultivars produced the highest yields. Infection levels with Botrytis cinerea seemed to be related to the date of flowering, as early sown and fast developing cultivars became infected earlier. There were few benefits from early sowing and the optimum time appeared to be mid- to late April. Overall, Sunbred 246 was the most successful cultivar in these experiments, combining reasonable yields with moderately early maturity.

scholarly journals The effect of sowing time on the yield and the variance of the seed moisture content a harvest of maize (Zea mays L.) hybrids

2006 ◽  
pp. 39-49
Author(s):  
Zsuzsa Molnár ◽  
Mihály Sárvári
Keyword(s):  
Moisture Content ◽  
Plant Density ◽  
Dynamic Effect ◽  
Vegetation Period ◽  
Moisture Loss ◽  
Seed Moisture Content ◽  
Sowing Time ◽  
Average Temperature ◽  
Seed Moisture ◽  
Late Maturity

Sowing time is an important crop technology element of maize. We studied the effect of this factor on the growth and production of maize in an experiment carried out near Hajdúböszörmény, in 2003 and 2004, and near Debrecen, in 2005.The soils of the experiments were humic gley soil and chernozem. Weather in both years differed greatly. 2003 was drought. Neither the distribution, nor the quantity of the precipitation were suitable in the growing season for maize. This fact basically determined the results.In 2004 and in 2005, there were favorable and rainy seasons. The distribution and quantity of precipitation were suitable between April and September. The average temperature was also suitable for maize.In 2003, we tested seven hybrids at four sowing times. Hybrids with a shorter vegetation period gave the highest yield at the later sowing time, while the hybrids with a longer vegetation period gave them at the earlier sowing time. The yield of PR34B97, PR36N70, PR36M53 hybrids were the best at every sowing times. The moisture loss of hybrids in the late maturity group was faster in the maturity season, but the seed moisture content was higher than the hybrids with early sowing time. The seed moisture content was very low due to the droughty year. In two hybrid cases, this value was higher than 20% only at the fourth sowing time.In 2004, we examined the yield and seed moisture contents of nine hybrids. In the favorable crop year, the yield of every hybrid was the highest at the second and third sowing times. Yields of PR34H31 and PR38B85 hybrids were significant. The seed moisture content at harvest was higher than the previous year, due to the rainy season. In the case of hybrids sown later, this value was higher by 30%. However, we noticed that this value was lower at the earlier sowing time, than at the later.In 2005, we applied three sowing times. Unfortunately, the results of the third sowing time could not be analyzed, due to the low plant density. The yield of the six hybrids varied from 12 to 14 t/ha at the first sowing time. At the second sowing time, the yields fluctuated and each hybrid had the lowest yield, except the PR37D25 hybrid. At the latest sowing time, the yield of the PR34B97 hybrid was the lowest. However, this low yield was due to damage from the Western corn rootworm (Diabrotica virgifera) imago. The moisture content at harvest of the hybrids varied from 16 to 24% at the first sowing time. Yields at the second sowing time were higher. The low yield of the PR34B97 hybrid coupled with a higher seed moisture content. In addition, the maximum value of the LAI was more favourable at the first sowing time, and ranged between 5-5.5 m2/m2.The crop year had a more dynamic effect on maize than the sowing time. First of all, the quantity and distribution of precipitation played an important role in respect to yield safety.

scholarly journals The Effect of Sowing Time and Nutrient Supply on the Yield Stability of Maize

2004 ◽  
pp. 75-80
Author(s):  
Nóra El Hallof ◽  
Mihály Sárvári
Keyword(s):  
Moisture Content ◽  
Active Agent ◽  
Nutrient Supply ◽  
Yield Stability ◽  
High Yield ◽  
Seed Moisture Content ◽  
Sowing Time ◽  
Genetic Characteristics ◽  
The Third ◽  
Seed Moisture

Sowing time, nutrient supply and plant number play crucial roles in the yield stability of maize. The productivity of various hybrids, each with its own genetic characteristics, was tested for three different sowing times and five different fertilizer doses. The highest yields were achieved at the third sowing time (17. V.), which is unusual, because the second half of the summer was rainy and was favourable for late sowing. The seed moisture content at harvest was higher than the optimal 14-15% at the third sowing time, the hybrids, which have intensive bleeding dynamics, couldn’t reach the lower seed moisture content at harvest of the early sowing. In that case we have to decision whether the plus yield of the third sowing time cover the drying costs.Some hybrids produced the highest yields by N 120, P2O5 75, K2O 90 kg/ha active agent but the higher fertilizer doses depress the yield. The other part of the hybrids were able to produce high yield by bigger fertilizer doses. On the whole the agro-ecological optimum of the NPK fertilization was N 120-160, P 25-100, K 90-120 kg/ha active agent, but the N 80, P2O5 50, K2O 60 kg/ha fertilizer doses was the most effective.

Effects of seed moisture content, stratification and sowing date on the germination of Corylus avellana seeds

2018 ◽  
Vol 31 (3) ◽  
pp. 743-749 ◽  
Author(s):  
Elias Pipinis ◽  
Athanasios Stampoulidis ◽  
Elias Milios ◽  
Kyriaki Kitikidou ◽  
Sofia Akritidou ◽  
...  
Keyword(s):  
Moisture Content ◽  
Sowing Date ◽  
Corylus Avellana ◽  
Seed Moisture Content ◽  
Seed Moisture

RF sensing of grain and seed moisture content

2001 ◽  
Vol 1 (2) ◽  
pp. 119 ◽  
Author(s):  
S.O. Nelson ◽  
S. Trabelsi ◽  
A.W. Kraszewski
Keyword(s):  
Moisture Content ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Rf Sensing

Seed development in Malva parviflora: onset of germinability, dormancy and desiccation tolerance

2007 ◽  
Vol 47 (6) ◽  
pp. 683 ◽  
Author(s):  
Pippa J. Michael ◽  
Kathryn J. Steadman ◽  
Julie A. Plummer
Keyword(s):  
Moisture Content ◽  
Seed Development ◽  
Desiccation Tolerance ◽  
Dry Weight ◽  
Physical Dormancy ◽  
Seed Moisture Content ◽  
Physiological Maturity ◽  
Seed Moisture ◽  
Physiological Dormancy ◽  
Malva Parviflora

Seed development was examined in Malva parviflora. The first flower opened 51 days after germination; flowers were tagged on the day that they opened and monitored for 33 days. Seeds were collected at 12 stages during this period and used to determine moisture content, germination of fresh seeds and desiccation tolerance (seeds dried to 10% moisture content followed by germination testing). Seed moisture content decreased as seeds developed, whereas fresh (max. 296 mg) and dry weight (max. 212 mg) increased to peak at 12–15 and ~21 days after flowering (DAF), respectively. Therefore, physiological maturity occurred at 21 DAF, when seed moisture content was 16–21%. Seeds were capable of germinating early in development, reaching a maximum of 63% at 9 DAF, but germination declined as development continued, presumably due to the imposition of physiological dormancy. Physical dormancy developed at or after physiological maturity, once seed moisture content declined below 20%. Seeds were able to tolerate desiccation from 18 DAF; desiccation hastened development of physical dormancy and improved germination. These results provide important information regarding M. parviflora seed development, which will ultimately improve weed control techniques aimed at preventing seed set and further additions to the seed bank.

Time of harvest, prethreshing treatment and quality in snap bean (Phaseolus vulgaris) seed crops

1987 ◽  
Vol 27 (1) ◽  
pp. 179 ◽  
Author(s):  
MA Siddique ◽  
G Somerset ◽  
PB Goodwin
Keyword(s):  
Moisture Content ◽  
Seed Quality ◽  
Seed Maturation ◽  
Seed Moisture Content ◽  
Snap Beans ◽  
Seed Moisture ◽  
Poor Seed ◽  
Seed Crops ◽  
Time Of Harvest

Trials on the cultivars Canyon and Gallatin 50 in 1978 and Cascade in 1979 were run in North Queensland to examine ways of improving seed quality of snap beans. The trials concentrated on the maturation period, since this is a critical period for the development of seed quality. We found that seed quality was poor when the crop was cut at the stage when the leaves had fallen and all the pods were dry, or if the plants were cut at any stage and allowed to dry on the ground in single rows. This poor seed quality was associated with high pod temperatures during seed maturation. Cutting the crop before leaf fall, at a seed moisture content close to 50% (20-40% of pods dry) and windrowing immediately in 5 or 10 rows to 1 windrow gave low pod temperatures during seed maturation and high seed quality. Seed harvested and threshed directly off the crop was of good quality provided the seed moisture content in the crop had fallen to less than 25%.

scholarly journals Mutu Fisik Dan Teknik Pematahan Dormansi Benih Kayu Kuku (Pericopsis mooniana (Thw.) Thw.)

2020 ◽  
Vol 11 (3) ◽  
pp. 199-205
Author(s):  
Arum Sekar Wulandari ◽  
Afrida Rizka Farzana
Keyword(s):  
Moisture Content ◽  
Cold Water ◽  
Dormancy Breaking ◽  
Seed Moisture Content ◽  
Physical Quality ◽  
Seed Moisture ◽  
Breaking Seed Dormancy ◽  
Short Time ◽  
Number Of Seeds

The presence of Pericopsis mooniana (Thw.) Thw. in nature is endangered. Meanwhile, Pericopsis mooniana plants have its obstacles in generative propagation because the seeds have mechanical dormancy. Studies carried out to: (1) observe the morphology of pods, seeds and sprouts of Pericopsis mooniana; (2) determine the physical quality of Pericopsis mooniana seeds, and (3) analyze the proper dormancy breaking treatment for Pericopsis mooniana seeds. Research is conducted in laboratories and in greenhouses. The physical quality of the seeds measured was the weight of 1,000 seeds and the moisture content. The treatment for breaking the dormancy of the Pericopsis mooniana seeds were control, scarification of the seeds using nail clippers and soaking in hot to cold water for 48 hours. Morphologically, the fruit of Pericopsis mooniana is pod-shaped, with orange seeds, oval-shaped and curved edges. Pericopsis mooniana sprouts include in the epigeal type. In 1 kg of weight there are ± 4,000 Pericopsis mooniana seeds, with the post harvest seed moisture content amounting to 7.62%. The dormancy breaking treatment of Pericopsis mooniana seeds increased seeds germination by 60% compared to controls. The scarification of Pericopsis mooniana seeds using nail clippers for breaking mechanical dormancy is the best treatment because it can increase the number of seeds germinating in a short time and simultaneously. Key words: breaking seed dormancy, morphology, Pericopsis mooniana, physical quality, seed scarificatio

scholarly journals Soluble carbohydrates in cereal (wheat, rye, triticale) seed after storage under accelerated ageing conditions

2011 ◽  
Vol 79 (1) ◽  
pp. 21-25
Author(s):  
Agnieszka I. Piotrowicz-Cieślak ◽  
Maciej Niedzielski ◽  
Dariusz J. Michalczyk ◽  
Wiesław Łuczak ◽  
Barbara Adomas
Keyword(s):  
Moisture Content ◽  
Spring Wheat ◽  
Soluble Sugars ◽  
Dry Mass ◽  
Soluble Carbohydrates ◽  
Accelerated Ageing ◽  
Winter Rye ◽  
Seed Moisture Content ◽  
Winter Triticale ◽  
Seed Moisture

Germinability and the content of soluble carbohydrates were analysed in cereal seed (winter rye, cv. Warko; spring wheat, cv. Santa; hexaploid winter triticale, cv. Fidelio and cv. Woltario). Seed moisture content (mc) was equilibrated over silica gel to 0.08 g H<sub>2</sub>O/g dry mass and stored in a desiccator at 20<sup>o</sup>C for up to 205 weeks or were equilibrated to mc 0.06, 0.08 or 0.10 g H<sub>2</sub>O/g dm and subjected to artificial aging at 35<sup>o</sup>C in air-tight laminated aluminium foil packages for 205 weeks. It was shown that the rate of seed aging depended on the species and seed moisture content. The fastest decrease of germinability upon storage was observed in seed with the highest moisture level. Complete germinability loss for winter rye, winter triticale cv. Fidelio, winter triticale cv. Woltario and spring wheat seed with mc 0.10 g H<sub>2</sub>O/g dm<sup>3</sup> occurred after 81, 81, 101 and 133 weeks, respectively. Fructose, glucose, galactose, myo-inositol, sucrose, galactinol, raffinose, stachyose and verbascose were the main soluble carbohydrates found in the seed. The obtained data on the contents of specific sugars and the composition of soluble sugars fraction in seed of rye, wheat and triticale did not corroborate any profound effect of reducing sugars, sucrose and oligosaccharides on seed longevity.

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