Effects of Green-stage Grazing on Rainfed Barley in Northern Syria. I. Tiller Production and Other Agronomic Characters

1989 ◽  
Vol 25 (4) ◽  
pp. 493-500 ◽  
Author(s):  
S. K. Yau ◽  
M. S. Mekni ◽  
I. Naji

SUMMARYEffects of simulated and actual grazing at the tillering stage on tiller production and other agronomic characters were studied over a number of seasons at two sites in northern Syria with two local barley landraces. In general, grazing encouraged tiller production but reduced head number per unit area because of a higher tiller mortality or infertility. Seed number per head and seed weight were not affected by grazing except in one season. Grazing delayed heading and maturity and reduced plant height. Simulated and actual grazing produced similar effects on the different characters investigated.

2015 ◽  
Vol 38 (6) ◽  
Author(s):  
Nihal Kayan ◽  
Nurdilek Gulmezoglu ◽  
Mehmet Demir Kaya

The comparative effect of 0, 0.2, 0.4, 0.6 and 0.8% Zn levels of zinc chelate (Zn-EDTA; 8% Zn) and zinc sulfate (23% Zn) applied as foliar sprays for assuaging zinc deficiency of chickpea cv. Gökçe was evaluated under field condition. The sprays were applied on the plants before blooming stage during 2012 and 2013 growing seasons and seed yield, yield components like plant height, pod number per plant, seed number per plant, hundred seed weight, harvest index and mineral concentrations (nitrogen, phosphorus, zinc and iron) in seeds were investigated. Plant height, pod number per plant, seed number per plant, hundred seed weight, harvest index and seed yield were investigated. The results showed that increased zinc doses caused an increase in Zn content of seed, while seed yield was not affected similarly. In general, plant height, pod number and seed number per plant increased by the application of zinc. Lower dose of Zn-EDTA and higher dose of ZnSO<sub>4</sub> gave higher yield components. Seed weight, harvest index and seed yield were not significantly influenced by Zn sources and doses; however, mineral concentration of seeds enhanced when Zn doses were increased. It was concluded that foliar application of zinc resulted in an increase in seed mineral contents rather than seed yield of chickpea. The dose of 0.6% with Zn-EDTA was the optimum combination for Zn enrichment in seed of chickpea.


2021 ◽  
Vol 19 (2) ◽  
pp. 117
Author(s):  
Heru Kuswantoro ◽  
Moch Muchlish Adie ◽  
Pratanti Haksiwi Putri

<p>Genetic parameters are important in genetic improvement and variety development. This study aimed to determine the effective characters that can be applied as selection criterion in soybean breeding using genetic parameters. About 100 soybean genotypes were grown in the Muneng Agricultural Technology Research and Assessment Installation from April to July 2020. The trial was conducted using a randomized complete block design. The results showed that high genetic variability was found on days to maturity, number of branches per plant, number of productive nodes per plant, 100-seed weight, and seed yield. The high heritability was shown by days to maturity, plant height, number of branches per plant, and 100-seed weight. All phenotypic correlations were significant, except for the correlation between seed yield and days to maturity, plant height, number of branches, and number of productive nodes. The seed yield had no genotypic correlation with all agronomic characters observed. The genotypic correlation was only significant for plant height and number of productive nodes, number of branches and number of filled pods, as well as number of productive nodes and 100-seed weight. Therefore, the improvement of seed yield can be conducted through direct selection using the seed yield parameter or indirectly using the 100-seed weight.<br /><br /></p>


1981 ◽  
Vol 61 (2) ◽  
pp. 175-183 ◽  
Author(s):  
D. F. DEGENHARDT ◽  
Z. P. KONDRA

The effects of seeding date and seeding rate on the agronomic characteristics of five genotypes of Brassica napus L. were studied for 2 yr at two locations in western Canada. Delayed seeding resulted in a significant increase in vegetative and total yield but a significant decrease in seed yield, harvest index, plant density, racemes per plant and racemes per unit area. Seeding date had no significant effect on seed yield per plant, 1000-seed weight and plant height. Increased seeding rate resulted in a significant increase in plant density, and racemes per unit area, but a significant decrease in harvest index, racemes per plant, seed yield per plant and plant height. Seeding rate had no significant effect on seed, vegetative or total yield and 1000-seed weight. There were significant differences due to genotypes for all variables except for total yield and racemes per unit area.


2016 ◽  
Vol 17 (2) ◽  
pp. 88
Author(s):  
Iswari S. Dewi ◽  
Indrastuti A. Rumanti ◽  
Bambang S. Purwoko ◽  
Triny S. Kadir

<p>Agronomic Characters and Resistance of Several Dihaploid Maintainer Lines to Bacterial Leaf Blight. Bacterial blight (Xanthomonas oryzae pv. oryzae, Xoo) is one of the most serious diseases of rice in Indonesia. From previous research thirteen lines of dihaploid (DH) maintainer lines-derived anther culture were selected for developing cytoplasmic male sterile lines. In this research those DH maintainers were evaluated for their agronomic characters such as plant height, number of productive tiller, and seed weight per hill as well as their resistance to Bacterial Leaf Blight (BLB) pathotypes III, IV and VIII at Indonesian Center Rice Research (ICRR), Sukamandi during wet season 2008/2009. The results showed that 10 DH maintainer lines i.e. BioMAc18-H36-3-Ma, BioMAc19-H36-3-Mb, BioMAc20- H36-3-Mc, BioMAc21-H36-4-M, BioMAc26-B1-1-Mb, BioMAc29-B2-1-Db, BioMAc31-B2-1-M, BioMAc33-B2-4- Pb, BioMAc34-B4-1-Da and BioMAc35-B4-1-Dc having plant height ranged from 88.79-104.08 cm, productive tiller ranged from 9 to 13 tillers/hill. Among those DH maintainer lines three lines were resistant to BLB pathotype III, i.e. BioMAc26-B1-1-Mb, BioMAc29-B2-1-Db and BioMAc31- B2-1-M lines, and two lines, i.e. BioMAc21-H36-4-M and BioMAc35-B4-1-Dc were highly resistant to BLB pathotype VIII. Only BioMAc35-B4-1-Dc lines highly resistant to BLB pathotype IV.</p><p> </p><p><strong>Abstrak</strong></p><p>Hawar daun bakteri yang disebabkan oleh bakteri Xanthomonas oryzae pv. oryzae, (Xoo) adalah salah satu penyakit utama padi di Indonesia. Dari penelitian sebelumnya 13 galur pelestari dihaploid (DH pelestari) yang berasal dari kultur antera telah diseleksi untuk perakitan galur mandul jantan baru. Tujuan penelitian ini adalah untuk mengevaluasi karakter agronomi dan ketahanan galur-galur DH pelestari terhadap patogen HDB. Karakter agronomi yang diamati meliputi tinggi tanaman, jumlah anakan produktif, dan bobot hasil per rumpun, sedangkan ketahanan terhadap HDB diamati berdasarkan skor ketahanan terhadap Xoo patotipe III, IV dan VIII di Balai Penelitian Padi, Sukamandi pada musim hujan 2008/2009. Hasil penelitian menunjukkan 10 galur DH pelestari, yaitu galur BioMAc18-H36-3-Ma, BioMAc19-H36-3-Mb, BioMAc20- H36-3-Mc, BioMAc21-H36-4-M, BioMAc26-B1-1-Mb, BioMAc29-B2-1-Db, BioMAc31-B2-1-M, BioMAc33-B2-4- Pb, BioMAc34-B4-1-Da, dan BioMAc35-B4-1-Dc mempunyai tinggi tanaman berkisar antara 88,79-104,08 cm, anakan produktif berkisar antara 9-13 batang/rumpun. Di antara galur DH pelestari yang tahan terhadap HDB patotipe III, yaitu galur BioMAc26-B1-1-Mb, BioMAc29-B2-1-Db dan BioMAc31- B2-1-M, dua galur yaitu galur BioMAc21-H36-4-M dan BioMAc35-B4-1-Dc sangat tahan terhadap HDB patotipe VIII, sedangkan galur BioMAc35-B4-1-Dc yang sangat tahan terhadap HDB patotipe IV.</p>


2021 ◽  
Author(s):  
Rodica Martea ◽  
◽  
Ion Gisca ◽  
Aliona Cucereavii ◽  
◽  
...  

Sunflower (Helianthus annuus L.) holds a prominent place in global agriculture as one of the most important crops from economical and alimentary aspect and is highly demanded both on domestic and international markets. Current study focuses on the analysis of morphological and productivity characteristics for a number of sunflower hybrids obtained in AMG-Agroselect Comerts SRL breeding programs. The values for the main biometric parameters were analyzed. Evaluation of the productivity indices demonstrates lower values in 2020 for most parameters of produc-tivity compared to 2019, specific climatic conditions of the mentioned year explain this fact. ‘Nistru’ hybrid in 2019 showed the best performance in four cases (leaf number, capitulum diameter, seed weight per capitulum and TKW). ‘Zimbru’ hybrid showed minimal values in five cases (plant height, ca-pitulum diameter, seed weight per capitulum, seed number per capitulum and TKW).


1969 ◽  
Vol 55 (4) ◽  
pp. 474-477
Author(s):  
R. Pietri ◽  
R. Abrams ◽  
F. J. Juliá

The effect of different levels of N, P, and K with and without Ca, Mg and two levels of calcium silicate, was studied on Kaki pigeonpea in an Oxisol at the Isabela Experiment Substation. The study confirmed previous results showing that fertilizer treatments have no effect on green pod yield, date of flowering, plant height, seed weight or protein content of the dry seed.


2007 ◽  
Vol 11 (2) ◽  
pp. 49
Author(s):  
Sri Gajatri Budiarti

<p>The aim of the experiment were to rejuvenate and characterize of wheat germplasm. Eighty nine genotypes planted at Kuningan Field Research Instalation, West Java from June to October 2002. Plot size for each genotypes 3 x 1 m2 with spacing 25 x 10 cm. Seeds were planted with 2 seed per hole and thinned out to one plant. Several agronomic characters were observed: date of flowering, date of maturing, plant height, number of productive tiller per hill, seed weight per hill and yield per plot. The results showed that: date of flowering (mean 60.9 days with range 48-77 days), date of maturity (mean 102.7 days with range 87-119 days), plant height (mean 72.4 cm, range 53.5-88.7 cm), number of productive tiller per hill (mean 9.71, range 4.9-24.0), seed weight per hill (mean 11.96 g, range 5.3-34.5 g) and seed yield per plot (200.0- 2624.5 g). Seventeen genotypes have date of flowering &lt;54.3 days, some of them were H40, H80, V219, and V132. There were 25 genotypes have date of harvesting ranged 87-98 days, some of them were H40 (87 days), H85 (91 days), H90 (91 days). There were 16 genotypes have plant height &lt;65.2 cm, some of them were C3 (53.5 cm), C7 (58.4 cm), C14 (59.1 cm). Whereas the highest was C10 (88.7 cm). Nine genotypes have number of productive tiller per hill &gt;17.5, some of them were C8 (23.6), C27 (22.7) and the greatest number was C28 (24.0). Sixty six genotypes have number of productive tiller per hill, ranged 4.9-11.2, some of them were: C34 (4.9), C24 (5.2), H85 (5.6). Seed weight per hill showed that 60 genotypes have seed weight &lt;12.6 g, for example: H71 (5.3 g), H40 (6.6 g), C132 (5,4 g), C34 (6,7 g), whereas the heaviest was C28 (34.5 g). Sixteen three two genotypes that have yield per plot &gt;2000 g were V192 (2016.0 g), and V167 (2624.5 g).</p><p> </p><p><strong>Abstrak</strong></p><p>Tujuan penelitian adalah merejuvenasi dan mengkarakterisasi plasma nutfah gandum, terutama morfologi dan agronomi. Penelitian dilaksanakan pada Juni hingga Oktober 2002 di Inlitpa Kuningan, Jawa Barat. Sejumlah 89 genotipe gandum ditanam pada petak berukuran 3 x 1 m2, dengan jarak tanam 25 x 10 cm, secara tugal, dua biji per lubang, dan diperjarang menjadi satu tanaman. Pemupukan dilakukan pada 1 MST secara alur di samping barisan tanaman. Pupuk dasar terdiri dari 100 kg urea, 200 kg SP36, dan 50 kg KCl/ha. Sejumlah 100 kg urea/ha diberikan lagi pada umur 5 MST dan 9 MST. Karakterisasi dilakukan terhadap umur berbunga, umur masak, tinggi tanaman, jumlah anakan produktif per rumpun, bobot biji per rumpun, dan hasil biji per petak. Umur berbunga ratarata 60,9 hari dengan rentang 48-77 hari, umur masak 102,7 hari dengan rentang 87-119 hari, tinggi tanaman 72,4 cm dengan rentang 53,5-88,7 cm, jumlah anakan produktif per rumpun 9,71 dengan rentang 4,9-24, bobot biji per rumpun 11,96 g dengan rentang 5,3-34,5 g, dan hasil biji per petak berkisar antara 200-2624,5 g. Genotipe yang mempunyai umur berbunga &lt;54,3 hari di antaranya adalah H40, H80, V219, dan V132. Genotipe yang mempunyai umur masak 87-98 hari di antaranya adalah H40, H85, dan H90. Genotipe dengan tinggi tanaman &lt;65,2 cm di antaranya adalah C3, C7, dan C14. Genotipe dengan jumlah anakan produktif per rumpun &gt;17,5 di antaranya adalah C28, C8, C27. Genotipe yang mempunyai jumlah anakan produktif 4,9-11,2 di antaranya adalah C34, C24, dan H85. Genotipe yang mempunyai bobot biji &lt;12,6 g, di antaranya adalah H71, H40, V132, C34, dan yang terberat adalah genotipe C28. Dua genotipe yang mempunyai hasil biji per petak &gt;2000 g adalah V192 dan V167.</p>


2017 ◽  
Vol 23 (1) ◽  
Author(s):  
A. B. SAGADE

The study of the effect of three well known mutagens, ethyl methane sulphonate (EMS), methyl methane sulphonate (MMS) and gamma rays (GR) on the yield contributing traits of the urdbean variety TPU-4 were carried out in the M3 generation. Effect of selected mutagenic treatments/doses of EMS (0.02, 0.03 and 0.04 M), MMS (0.0025, 0.05 and 0.01 M) and (GR) (30, 40 and 50 KR) on different yield contributing traits like plant height, plant spread, number of pods per plant, pod length, number of seeds per pod, seed yield per plant and 100 seed weight were analyzed in the M3 populations of the variety TPU-4. Seeds of M2 plants and control were harvested separately and sown to raise M3 population.. Genetic variabilty in the mutagen administered M3 progeny of the urdbean variety TPU-4 was analyzed by employing statistical methods. Data on mean values and shift in the mean of seven quantitative traits was evaluated on individual plant basis. The experimental findings revealed that concentrations / dose of the all these mutagens showed inhibitory effect on plant height, number of pods per plant, pod length and number of seeds per pod. Lower concentrations of mutagens exerted a promotory effect on plant spread, 100 seed weight and seed yield per plant while higher concentrations of these mutagens inhibited them to different extent.


2021 ◽  
Vol 5 (2) ◽  
pp. 428-439
Author(s):  
K. M. Ladan ◽  
M. G. Abubakar ◽  
J. Suleiman

The Study was conducted to evaluate the effect of solid and liquid organic fertilizer on growth and yield of rosselle in 2016 cropping season at Institute of Agricultural Reserve Zaria, Samaru (11011’N 07038E and 686m) and Institute of Horticultural Research Farm Bagauda (12000’N 8031”Em 488m) in Northern Guinea Savannah and Sudan Savannah Ecological Zones of above sea level Nigeria. Treatments consisted of four levels of solid poultry manure (0.0, 1.0, 2.0 and 3.0) tons/ha and five levels of liquid organic manure from Grand Total Organic Fertilizer Limited (0.0, 0.5, 1.0, 1.5 and 2.9) litres/ha, which were factorially combined in a randomized complete block design (RCBD) and replicated three times. Data on growth parameter were collected on plant height (cm), plant dry weight (g), leaf Area index crop growth rate (CGR) Relative Growth Rate (RGR) and Net assimilation rate (NAR) while data on yield parameters like number of calyx per pant, 100 seed weight (g) and  calyx yield per hectare kg/ha were collected. Results showed that plant height, plant dry weight(g), 100 seed weight(g) and calyx dry yield kg/ha had a significant increase with application of 2.0 litres/ha of liquid fertilizer than other rates. While application of solid poultry manure at 3.0ton/ha significantly increases plant height, net assimilation rate, leaf area index and calyx dry weight when compared with other rates. From the results obtained, the combination of 2.0 litres/ha liquid organic fertilizer and 3.0 ton/ha solid poultry manure produce the highest calyx yield at both location.


1981 ◽  
Vol 38 (1) ◽  
pp. 127-138 ◽  
Author(s):  
Paulo R.C. Castro ◽  
Roberto S. Moraes

This research deals with the effects of exogenous growth regulators on production of soybean plant (Glycine max cv.. Davis) under greenhouse conditions, At the flower anthesis, 2,3,5-triiodobenzoic acid (TIBA) 20 ppm was applied. Other two applications with TiBA, with intervals of four days, were realized. Before flowering, Agrostemin (1 g/10 ml/3 1), gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm were applied. It was observed that CCC and TIBA reduced stem dry weight. Soybean plants treated with TIBA reduced weight of pods without seeds , seed number and seed weight.


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