scholarly journals THE EFFECT OF DIFFERENT SOWING TIMES ON FRESH EAR YIELD AND YIELD COMPONENTS IN SWEET CORN (ZEA MAYS L. SACCHARATA STURT.) VARIETIES

2021 ◽  
Vol 186 (2) ◽  
pp. 183-199
Author(s):  
Sevda KILINÇ ◽  
Şehmus ATAKUL ◽  
Şerif KAHRAMAN ◽  
Hüsnü AKTAŞ ◽  
İrfan ERDEMCİ ◽  
...  

This study was carried out to investigate the effects of different sowing times on duration of tasselling, plant height, first ear height, ear length, ear diameter, number of ears per plant, fresh ear yield with husk, fresh ear yield unhusked, and marketable number of ears of different sweet corn (Zea mays L. saccharata Sturt.) varieties in Diyarbakır between the years of 2010-2012. The trial was conducted as split plots in randomised complete blocks with three replications. The main plots were sowing times, and the sub-plots were varieties. The trials were carried out at eight different sowing times (1 April, 15 April, 1 May, 15 May, 1 June, 15 June, 1 July and 15 July) with ‘Merit’, ‘Jubilee’, ‘Lumina’, ‘Vega’ and ‘Sakarya’ composite sweet corn varieties. From the variance analysis of the three-year combined average, the duration of tasselling, plant height, first ear height, ear length, ear diameter, number of ears per plant, fresh husked ear yield, fresh unhusked ear yield and marketable ear number were statistically significant for sowing times and varieties. According to the sowing time × variety interaction, except ears per plant and first ear height values, all other traits were significant. The fresh husked and unhusked ear yields varied between 8541.7-19396.8 kg ha-1 and 5065.0-13485.7 kg ha-1, respectively. The highest fresh husked and fresh unhusked ear yields were obtained from the 15 April sowing time of ‘Vega’ variety. The results state that optimal sowing dates for different varieties of sweet corn could be from 1 April to 1 May, and the most suitable variety to be planted is ‘Vega’ in Diyarbakır conditions.

2015 ◽  
Vol 9 (5) ◽  
pp. 117-121
Author(s):  
Amin Farnia ◽  
Vahid Kazemi Ashjardi

In order to evaluate the effect of nitrogen bio-fertilizers on yield and yield and yield components of different maize (zea mays L.) cultivars  a field experiment was conducted in Islamic Azad University of Boroujerd, Iran (at Isfahan region), during the growing seasons 2013- 2014. The experiment was laid out in a split-plot design based on randomized block design with three replications. Treatments were different cultivars (Siloking, NS4015, Maxima and SC704) in main plots and nitrogen bio-fertilizers (Azotobacter, Nitroxin and Supernitroplus) with control in sub plots. The results reviled that the effect of cultivar treatmenton all traits was significant. Effect of N bio-fertilizer treatment was significant on stem weight, leaf weight, ear weight and biomass yield only. Interaction effect of them was significant on all traits excepting number of leaf per plant and ear weight.   Application of nitrogen biofertilizers increased yield components of different cultivars of maize specially, for Siloking cultivar and Supernitroplus bio-fertilizer. Siloking cultivar with application of Supernitroplus biofertilizer had the highest plant height and leaf weight and Maxima cultivar with application of Nitroxin biofertilizer had the lowest plant height and leaf weight. However, NS4015 cultivars with non-application of any of N biofertilizer had the highest stem weight. Siloking cultivar had the highest number of leaf per plant and NS4015 cultivar had the lowest number of leaf per plant. Siloking cultivar had the highest all of the traits excepting stem weight. So, this cultivar was more useful than other cultivars for achieve to maximum production of foliage in Isfahan province. However Siloking cultivar with application of Supernitroplus nitrogen biofertilizer treatment had the highest biomass yield as foliage yield and we propose this treatment for maximum production of maize in Isfahan environmental condition.DOI: http://dx.doi.org/10.3126/ijls.v9i5.12711


2004 ◽  
Vol 55 (2) ◽  
pp. 147 ◽  
Author(s):  
Hamit Kavak

The effect of sowing date on severity of scald and yield components of barley was studied over 2 years, using 15-day intervals between sowing dates under dryland conditions in Turkey. Disease severity was greatest at the first sowing time, and it decreased linearly at subsequent sowing times in both years. Disease did not develop on flag and second leaves for the third sowing date, and was not observed on any leaf after the fourth and fifth dates of sowing in 2000 and 2001, respectively. After the third sowing date, a decrease in total grain yield and yield components, number of ears per plant, grains per head, and plant height was observed in both infected and control plots. Yield was also reduced by scald and resulted in total grain yield reductions of 10.1% and 6.0% for the first and second sowing dates in 2000, and 16.2%, 9.2%, and 3.0% on the first 3 sowing dates in 2001, respectively. At the first 2 sowing dates only ears per plant was decreased by scald, with respective reductions of 8.3% and 4.4% in 2000, and 14.3% and 8.5% in 2001, when compared with the control plots.


2013 ◽  
Vol 39 (3) ◽  
pp. 549 ◽  
Author(s):  
De-Bo ZHENG ◽  
Xiao-Hong YANG ◽  
Jian-Sheng LI ◽  
Jian-Bing YAN ◽  
Shi-Long ZHANG ◽  
...  

Author(s):  
Nasratullah Habibi ◽  
Friba Sikandari

An experiment was conducted to evaluate effect of urea fertilizer on yield and yield components of Zea mays L. Using Randomized Complete Block Design (RCBD) split plots in three replications in agricultural research farm of Balkh University by 2019. Doses of urea used in this experiment were 0, 80, 160 and 240 kg ha-1 , respectively. It has been found that amount of nitrogen fertilizer (urea) had significant effect on yield of maize at p<0.05. The higher level of nitrogen caused the higher grain yield, number of kernels per ear, the number of grains per ear row, ear diameter, cob length, grain per plant and plant height. As a result 7.76 ton ha-1 was recorded as high yield while 240 kg ha-1 urea was used, and 5.12 ton ha-1 was recorded as low yield in treatment one with 0 kg ha-1 of nitrogen fertilizer. Finally, as a result using 240 kg ha-1 nitrogen fertilizer is recommended.


Crop Science ◽  
1970 ◽  
Vol 10 (1) ◽  
pp. 39-41 ◽  
Author(s):  
D. L. Garwood ◽  
Evelyn J. Weber ◽  
R. J. Lambert ◽  
D. E. Alexander

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