Keywords : SEEDING


Effect of the seeding rates in grain yield and its quality for four cultivars of barely

Basheer H. A. Al-Dulaimy; Wassan A. H. Al-Janabi; Yas A. Al-Dulaimy

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2015, Volume 13, Issue 1, Pages 203-212
DOI: 10.32649/ajas.2015.120019

A field experiment was conducted in Sowairah Research Station-General commission for Agriculture Researches during the winter season of 2012-2013, in order to study the effect of four seeding rates 100, 120, 140 and 160 kg.ha-1, on grain yield and its quality for four cultivars of barely (shua'a, Amal, Sameer and Al-khair), using a split-plot arrangement in Randomized Complete Block Design (RCBD) in three replicates.
The results showed the following:
The seeding rate 160 kg.ha-1 was significantly superior in plant height 99.06 cm, number of spikes.m-2 270.20 spike grain yield 3.67 ton.ha-1, protein concentration in grain 8.82% and protein yield 322.72 kg.ha-1, while there was no significant effect of seeding rate on number of grain per spike.
Significant differences were found between all cultivars in all characters, Sameer cultivar was superior in plant height and protein concentration in grain (9.39%), Shua'a cultivar was superior in number of spikes.m-2 260.5 spike, and Al-Khair cultivar was superior in number of grain per spike 50.74 grain, grain yield 4.10 tonne.ha-1 protein yield 380.36 kg.ha-1. The interaction between seeding rate and cultivars effect in number of spikes. m-2, protein concentration in grain and protein yield. The combinations between Al-Khair cultivar and seeding rate of 140 and 160 kg.ha-1 gave highest average of protein yield of 416.11 and 417.31 kg.ha-1 respectively.

Effect of seeding rate, Nitrogen levels and rate of application of herbicides on growth of bread wheat

Reasan K. Shati; Sabiha H. Al-Lami

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2010, Volume 8, Issue 1, Pages 42-63

A field trial was conducted at the experimental farm, Department of Field Crop Science, College of Agriculture, University of Baghdad, Abu-Ghraib in 2001/2002 and 2002/2003 seasons to investigated the effect of seeding rate (120, 180 and 240 kg.ha‌2), nitrogen levels ( 240, 300 and 360 N kg.ha-2) and rate application of herbicides (Topic 250 gm a.i ha-1+ Logran 125 gm a.i ha-1 and Topic 500 gm+ Logran 250 gm a.i ha-1).
A randomized complete plot design (RCBD) according to split – split plot was used with three replications.
The following results could be summarized as follow :
Rate seeding 240 kg.ha-1 gave a high value of leaf area index (6.1 and 6.9) dry weight of crop (509.6 and 670.4 gm.m‌-2), rate growth of crop (41.0 and 46.0 gm.m‌-2.day-1) and net assimilation rate (5.7, 6.0 gm.m‌-2.day-1)in the two seasons respectively.
In both seasons 2001/2002 and 2002/2003 and at all stage growth of plant especially at stage 102 day from date planting. The high level of nitrogen fertilization 360 kg.ha-1 caused increasing of most characteristic as leaf area index, dry weight of plant, rate growh of crop and net assimilation rate.
The treatment recommendation of Topic and Logran at first season gave high value of leaf area index (6.1) and rate growth of crop (41.9 gm.m-2 day) at second season.
The treatment of full recommendation of rate application of Topic and Logran gave high value of leaf area index (7.5) and dry weight of plant (484.4 gm.m‌-2.day-1). Rate of seeding 240 kg.ha-1 with 360 kg.N.ha 1 gave in both seasons high value of leaf area index 6.6, 7.2 dry weight of crop (699.2, 597.2 gm.m-2) and rate growth of crop (43.7 and 47.7 gm.m-2.day-1) respectively.The treatment recommendation of Topic and Logran with nitrogen fertilization 360 kg N.ha-1 at first season gave high value of leaf area index 6.6 but at second season gave full recommendation high value 8.0.
From these results we can conclusion that the wheat is positive response to study factors, so we can use competition method to control a weed, instead of herbicide in order to keep clean environment.

Response of Mung bean to phosphorus fertilization and seeding rates

Mohamed A. I. Al-Anbari

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2009, Volume 7, Issue 2, Pages 61-73

To determine the suitable level of phosphorus fertilization and the best seeding rate in (Vigna mungo L.), CV. (Khadrawy) under kerbala province environment. A field experiment was conducted at husaniah/ College of agriculture during the growing season of 2005/ 2006 and 2006/ 2007, using split plot design with RCBD in three replicates. Three levels of phosphorus fertilization (15, 30 and 45) kg P/ ha were assigned in the main plots, whereas seeding rates (24, 36, and 48) kg/ ha as sub plots.
The suitable fertilization level was produced in 15 kg P /ha with most studied characters, excluding seed weight and no. of plants/ m2. Increasing level of phosphorus to 45 kg P/ ha decreased seed yielding in percentage (16.65 and 26.45) % at the first and the second season respectively. Increasing level of phosphorus fertilization caused significant increase in seed weight because of the yield component compensation which produced from decrease no. of pods/ m2 and no. of seeds/ pod. The best seeding rate was 36 kg/ ha in characters of no. of plants/m2, leaflet area, no. of pods/ m2 and seed yield which gave (1198.40 and 1060.10) kg/ ha at the first and the second season respectively. The highest interaction was obtained from 15 kg P/ ha in second season (1187.7) kg/ ha, while the first season was not signification interaction. The highest percentage of determination of coefficient was from leaflet area and no. of pods/ m2 which were (71and 58) % respectively for first season and (60 and 50) % respectively for second season.

Genetic parameters and path analysis in bread wheat as effected by seeding rates

H. J. Hamadi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2008, Volume 6, Issue 1, Pages 74-90

A field experiment was conducted at the farm AL Sofia place in Ramadi during 2004–2005 and 2005–2006, seasons. Arandomized complete block design in a split plot design with eight varieties (IPA 95, IPA 99, Abu-Ghraib3, Al-fateh, sale, shaam6, Tamoz3, Al-Rashed) as main plots and three sedding rates (100, 150 and 200 kg/ ha) as sub plots with three replication. Genotypic, phenotypic variances and coefficient of variability, broad sence heritability percentage, genotypic and phenotypic correlation coefficient and other characters were estimated. path coefficient analysis carried out to partition the genotypic correlation coefficient to the direct and Indirect effects. The results showed that genotypic, phenotypic variances and coefficients of variability were varied with seeding rates. Genotypic variances more than Ecological variances for all characters in two seasones.
Phenotypic correlation coefficients was more than genotypic correlation coefficient for number of spikes/ m2, number of grain/ spikes and spike length for two seasones. The higher values for broad sence heritability appeared in biological grain/ spike (99.9, 99.8) for two seasones.
Path analysis revealed that biological grain for all seeding rates and two seasones obtained highest direct to grain yield, while length spike had the most positive direct and indirect effects. It was cocluded that biological grain could be used as selection index for the improvement of grain yield in bread wheat.

GROWTH ANALYSIS IN RICE INFLUENCED BY SEEDING RATES (CROP GROWTH RATE, NET ASSIMILATION RATE AND PADDY YIELD)

S. F. AL-ESSAWI

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2007, Volume 5, Issue 2, Pages 165-176

A field experiment was carried out at Field Crop Station of IPA Agricultural Research Center during the summer season of 1996. The aims of the study were to investigate the effects of seeding rates in some growth parameters and yield in nine genotypes of rice. The design of experiment was (RCBD) in split plot arrangement with four replicates. The seeding rates 120, 160 and 200 Kg/ha were the main plots, while the genotypes were sub plots. The growth parameters studied included crop growth rate (CGR), net assimilation rate (NAR), relative growth rate (RGR) and yield. The measurement began 55 days after planting until physiological maturity.
The results showed that increasing of seeding rates caused significant increments for (CGR) (at the periods 55, 69 and 97 days after planting), the percentage increments were 37.9, 32.1 and 15.3% respectively when the seeding rates increased from 120 to 200 kg/ha, on the other hand increasing seeding rates caused significant reductions in (NAR) (at the periods 83, 97 and 111 days after planting) the percentage reductions were 25.6, 16.4 and 46.7% respectively, while (RGR) (at the periods 83, 111 and 125 days from planting) the reductions percentages were 16.3 and 26.6% and 7.14% respectively when the seeding rates increased from 120 to 200 kg/ha. Increasing of seeding rates caused significant increment in paddy yield (30.6%) when the seeding rates increased from 120 to 200 kg/ha. Significant differences among genotypes were found interms of (CGR), (NAR) and (RGR) at different periods as well as paddy yield. Higher (NAR) and paddy yield were obtained by genotypes RP20 and IR56 (4.56 and 4.13 gm/m2/days) and (4.77 and 4.27 t/ha) respectively. There were significant interactions between seeding rates and genotypes in paddy yield.
Results of correlation study showed that significant positive relationship between paddy yield with (CGR), (NAR) and (RGR) at different growth periods.

EFFECT OF SEEDING ON GROWTH AND CRAIN YIELD OF TRITICALE

H. K. Saleh; H. J. Homadi; S. A. Faiath

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2005, Volume 3, Issue 2, Pages 41-46

Field experiment was carriedout in the seasons of 2000 – 2001 and 2001 - 2002 at the fields of Saqlawaia Zone to study the effect of seeding rateS (100 - 160 - 220) kg/ha on growth and grain yield triticale. The experiment was designed according to RCBD with four replication .Significant differenceswere found for some characteries for both seasons and the mean of two seasons such as the plant height, number of tiller, ieaf area and leaf area index, numder of spikes, biological yield, grain yield and harvest index, but no significant differences detween numder of grain per spike, weight of 1000 graibs (g), The seeding rate (220) kg/ha gave the highest plant height, numder of tillers, numder of spike, biological yield, grain yield in both seasons and the mean of two seasons.
The seeding rate (220) kg/ha gave biological yield (16476.87) kg/ha and grain yield (4939.79) kg/ha.