Keywords : RATES


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.

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.

Effect of Sowing Rates on Growth and Yield of Some rice cultivars

Aeid K. Maseer

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2009, Volume 7, Issue 2, Pages 74-81

Field experiment was conducted at Kadisaea Governorate to investigate effect of three swing rates (100, 140 and 180 kg. ha) on growth and yield of four rice cultivars (Anber- 33, Anber Menathera, Anber Baghdad and Anber Furat).
The results indicated that Anber Baghdad C. V. gave significant increment in plant height, number of panicles per m2, weight of 1000 grains and yield. The cultivar of Anber Menathera gave largest flag leaf area and highest number of grains per panicle.
Sowing rate (180 kg. ha-1) superior in no. days (planting to 50% flowering), FLA (Flag Leaf Area), No. panicle per m2, which rwflected in highest yield.
Data showed significant interaction between sowing rate and cultivars, and that increasing of sowing rate of CV. Anber Baghdad to 180 kg/ ha, encouraged the plant to posses highest No. panciles/ m2 No. grain/panicle, weight of 1000 grain, so these all reflect in highest yield.

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.