عنوان المقالة:تأثير التدرج الهرمي على انتاج الفروع تحت تاثير معدل البذار ومستوى النتروجين The Effect of The Hierarchy of Tiller Production In Wheat Under The Influence of Seed Rates And Nitrogen Levels
Abstract:A Factorial experiment was conducted at the Experimental Station (A) of the Field Crops
Department / college of Agriculture - University of Baghdad (Jadriya) during the winter season of 2014-2015.
The study aimed to investigate the effect of the hierarchy of tiller production in wheat under the influence of
seed rates and nitrogen levels. Treatments were distributed in the Factorial experiment within Randomized
Complete Black Design with three Replicates and four seeding rates 60,80,100 and 120 kg ha-1 and fertilized
with four nitrogen levels 50,100,150 and 200 kg N. ha-1. The results showed that there were significant
differences within two factors and their interactionwith the number of fertile tillers m-2 (the first tiller T1, the
second tiller T2, the third tiller T3). m-2, dry weight (gm) and plant height (cm) during the growing season.As
the main stem superiority to give the highest average of number of fertile tillers m-272.7 spikes. m-2 and dry
weight were 15.131 (gm) and plant height was 76.18 cm compared to other primary (tiller1, tiller2, tiller3)
which amounted to 167.54 tillers. m-2 5.39 (g) and 54.41 (cm) respectively. Concerning seed rates were higher
than 80 kg. Ha in giving the highest average number of fertile tillers. m-2 reached 181.77 tillers. Fertile. m-2 did
not differ significantly from the seed rate 100 kg. Ha, which reached 174.57 tillers. Fertile. m-2 while the seed
rate exceeds 60 kg. Ha in giving the highest average dry weight (gm) and plant height (cm) was 2.28 g and
64.03 cm respectively compared to the rest of the other seed rates. The Nitrogen levels have exceeded 150 kg
N.ha, gave the highest average number of fertile tillers. m-2 182.1 fertile tillers. It did not differ significantly in
the level of 100 kg. N. ha, which gave an average of 164.25 tillers. Fertile.m-2 compared to the rest of the levels,
while dry weight and plant height exceeded the level of 100 kg, giving the highest average of 2.362 g and 64.2
cm respectively compared to the rest of the levels. Conclude that the total contribution rate of the primary tillers
is half the total number m-2. Within two factors study, seeding rates and nitrogen levels behaved differently in
their effect on the main stem and primary tillers. The older tillers also gave the highest contribution rates
compared to the higher tillers in the composition. The lowest seed rate also gave the highest average dry matter
accumulation and the average number of fertile tillers. m-2.
Abstract
Abstract:A Factorial experiment was conducted at the Experimental Station (A) of the Field Crops
Department / college of Agriculture - University of Baghdad (Jadriya) during the winter season of 2014-2015.
The study aimed to investigate the effect of the hierarchy of tiller production in wheat under the influence of
seed rates and nitrogen levels. Treatments were distributed in the Factorial experiment within Randomized
Complete Black Design with three Replicates and four seeding rates 60,80,100 and 120 kg ha-1 and fertilized
with four nitrogen levels 50,100,150 and 200 kg N. ha-1. The results showed that there were significant
differences within two factors and their interactionwith the number of fertile tillers m-2 (the first tiller T1, the
second tiller T2, the third tiller T3). m-2, dry weight (gm) and plant height (cm) during the growing season.As
the main stem superiority to give the highest average of number of fertile tillers m-272.7 spikes. m-2 and dry
weight were 15.131 (gm) and plant height was 76.18 cm compared to other primary (tiller1, tiller2, tiller3)
which amounted to 167.54 tillers. m-2 5.39 (g) and 54.41 (cm) respectively. Concerning seed rates were higher
than 80 kg. Ha in giving the highest average number of fertile tillers. m-2 reached 181.77 tillers. Fertile. m-2 did
not differ significantly from the seed rate 100 kg. Ha, which reached 174.57 tillers. Fertile. m-2 while the seed
rate exceeds 60 kg. Ha in giving the highest average dry weight (gm) and plant height (cm) was 2.28 g and
64.03 cm respectively compared to the rest of the other seed rates. The Nitrogen levels have exceeded 150 kg
N.ha, gave the highest average number of fertile tillers. m-2 182.1 fertile tillers. It did not differ significantly in
the level of 100 kg. N. ha, which gave an average of 164.25 tillers. Fertile.m-2 compared to the rest of the levels,
while dry weight and plant height exceeded the level of 100 kg, giving the highest average of 2.362 g and 64.2
cm respectively compared to the rest of the levels. Conclude that the total contribution rate of the primary tillers
is half the total number m-2. Within two factors study, seeding rates and nitrogen levels behaved differently in
their effect on the main stem and primary tillers. The older tillers also gave the highest contribution rates
compared to the higher tillers in the composition. The lowest seed rate also gave the highest average dry matter
accumulation and the average number of fertile tillers. m-2.
Publication Date
12/11/2017
Publisher
IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS)
Keywords:the hierarchy of tiller production, the contribution of main stem, Tiller1, Tiller2, Tiller3, Dry weight tillers, Tiller height * Part of M.Sc. Thesis of the first author.
محمد فوزي حمزة الحسن | Mohammed fawzi hamza al -hasaan | 7100