scholarly journals Improving Rice Grain Quality and Yield of Giza 179 Rice Cultivar Using some Chemical Foliar Spray at Late Growth Stages under Salt Stress

2019 ◽  
Vol 10 (9) ◽  
pp. 769-775
Author(s):  
Amira Okasha ◽  
M. Abbelhameed ◽  
Omnia Elshayb
Keyword(s):  
Salt Stress ◽  
Grain Quality ◽  
Foliar Spray ◽  
Rice Cultivar ◽  
Growth Stages ◽  
Rice Grain ◽  
Late Growth

scholarly journals Effect of Various Sources of Zinc and Iron on Grain Yield, Nutrient Uptake and Quality Parameters of Finger Millet (Eleusine coracana L.)

2020 ◽  
pp. 46-55
Author(s):  
E. Ajay Kumar ◽  
K. Surekha ◽  
K. Bhanu Rekha ◽  
S. Harish Kumar Sharma
Keyword(s):  
Grain Yield ◽  
Nutrient Uptake ◽  
Grain Quality ◽  
Finger Millet ◽  
Foliar Application ◽  
Block Design ◽  
Foliar Spray ◽  
Calcium Content ◽  
Quality Parameters ◽  
Growth Stages

A field experiment was conducted during Kharif 2018 at College Farm, College of Agriculture, PJTSAU to evaluate the effect of various sources of zinc and iron on grain yield, nutrient uptake and grain quality parameters of finger millet. The experiment was laid out in a randomized block design with 14 treatments and replicated thrice.The results revealed that application of different Zinc and iron sources at different rates significantly influenced the grain yield, nutrient (N, P and K) uptake and grain quality parameters (protein and calcium content) of finger millet. Highest grain yield (3653 kg ha-1), protein (11.25%) and calcium content (2.33%) in grain were obtained in the treatment receiving RDF + foliar application of FeSO4 @ 0.5% twice at 30 and 60 DAS which was on par with treatment receiving RDF + foliar application of Fe-humate twice at 30 and 60 DAS (3612 kg ha-1, 10.90% and 2.0%) and the lowest grain yield (1995 kg ha-1), (6.25%) and calcium content (1.10%) were recorded with application of RDF alone. The nutrient uptake (N, P, K and Fe) at all the crop growth stages was significantly higher with the treatment receiving RDF (60:40:30 kg N,P2O5 and K2O kg ha-1) + foliar application of FeSO4 @ 0.5% twice at 30 and 60 DAS which was on par with treatment receiving RDF+ foliar application of Fe-humate twice at 30 and 60 DAS. Highest iron uptake was recorded in treatment receiving RDF+foliar application of FeSO4 @ 0.5% twice at 30 and 60 DAS which was on par with T8, T14 treatments.The highest nutrient uptake of Zinc was obtained in treatment receiving RDF + Zn Humate foliar spray @ 0.25% twice at 30 and 60 days after sowing which was on par with treatment receiving RDF + Zn Humate soil  application. Contrary to the grain yield, nutrient uptake, protein and calcium content there were no significant differences between treatments with respect to Zn, Fe and carbohydrate content in grain.

scholarly journals Effects of Foliar Application of Gibberellic Acid on the Salt Tolerance of Tomato and Sweet Pepper Transplants

Horticulturae ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 93
Author(s):  
Alessandro Miceli ◽  
Filippo Vetrano ◽  
Alessandra Moncada
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Gibberellic Acid ◽  
Foliar Application ◽  
Saline Water ◽  
Foliar Spray ◽  
Sweet Pepper ◽  
Limiting Factor ◽  
Growth Stages ◽  
Promoting Effect

Seed germination and early seedling growth are the plant growth stages most sensitive to salt stress. Thus, the availability of poor-quality brackish water can be a big limiting factor for the nursery vegetable industry. The exogenous supplementation of gibberellic acid (GA3) may promote growth and vigor and counterbalance salt stress in mature plants. This study aimed to test exogenous supplementation through foliar spray of 10−5 M GA3 for increasing salt tolerance of tomato and sweet pepper seedlings irrigated with increasing salinity (0, 25, and 50 mM NaCl during nursery growth. Tomato and sweet pepper seedlings suffered negative effects of salinity on plant height, biomass, shoot/root ratio, leaf number, leaf area, relative water content, and stomatal conductance. The foliar application of GA3 had a growth-promoting effect on the unstressed tomato and pepper seedlings and was successful in increasing salinity tolerance of tomato seedlings up to 25 mM NaCl and up to 50 mM NaCl in sweet pepper seedlings. This treatment could represent a sustainable strategy to use saline water in vegetable nurseries limiting its negative effect on seedling quality and production time.

Effect of Flood Timing on Red Rice (Oryzaspp.) Control with Imazethapyr Applied at Different Dry-Seeded Rice Growth Stages

2005 ◽  
Vol 19 (2) ◽  
pp. 476-480 ◽  
Author(s):  
Luis A. Avila ◽  
Scott A. Senseman ◽  
Garry N. McCauley ◽  
James M. Chandler ◽  
John H. O'Barr
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Rice Cultivar ◽  
Growth Stages ◽  
Rice Grain ◽  
Red Rice ◽  
Cultivated Rice ◽  
Leaf Stage ◽  
Rice Growth ◽  
Herbicide Treatment

Field experiments were conducted in 2002 and 2003 in Beaumont, TX, to evaluate the effect of flood timing on red rice control with imazethapyr applied at different cultivated rice growth stages. Treatments included flood establishment at 1, 7, 14, and 21 d after postemergence (POST) herbicide treatment (DAT). Imazethapyr was applied preemergence at 70 g ai/ha followed by 70 g/ ha POST when imidazolinone-tolerant rice cultivar ‘CL-161’ had three- to four-leaf stage (EPOST) or five-leaf stage (LPOST). Flood needed to be established within 14 DAT to achieve at least 95% red rice control when imazethapyr was applied EPOST. However, flood needed to be established within 7 DAT to provide at least 95% red rice control when imazethapyr was applied LPOST. Delaying the flood up to 21 DAT reduced rice grain yield for both application timings.

scholarly journals Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates

2019 ◽  
Vol 54 ◽  
Author(s):  
Lillian Matias de Oliveira ◽  
Enio Marchesan ◽  
Ricardo de David ◽  
Isabel Schlegel Werle ◽  
Bruno Behenck Aramburu ◽  
...  
Keyword(s):  
Rice Blast ◽  
Grain Quality ◽  
Block Design ◽  
Magnesium Silicate ◽  
Rice Cultivar ◽  
Rice Grain ◽  
Irrigated Rice ◽  
Randomized Complete Block Design ◽  
Milling Yield

Abstract: The objective of this work was to evaluate the effects of fertilization with nitrogen topdressing and silicates, as well as of the use of fungicides, on the occurrence of rice blast on panicles, milling yield, and whole grains, vitreous grains, and chalky kernels in a flood-irrigated rice cultivar sensitive to the disease. Two experiments were conducted in a randomized complete block design, in a 4×4×2 factorial arrangement, with four replicates: in experiment 1, four doses of nitrogen × four doses of calcium and magnesium silicate on soil × with and without fungicides; and, in experiment 2, four doses of nitrogen × four doses of potassium silicate applied on leaves x with and without fungicides. At the doses above 60 kg ha-1 nitrogen without fungicides, there was an increase of rice blast severity on panicles, a decrease in the percentage of whole and vitreous grains, and an increase in chalky kernels and chalky area. The greatest effects of silicates occurred without fungicides. Fungicide use reduced the severity of rice blast on panicles. Milling yield ranged from 60 to 70% in both experiments. The control of rice blast with fungicides maintains high rice grain quality, milling yield, and percentages of whole and vitreous grains.

scholarly journals Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 325
Author(s):  
Ramin Rayee ◽  
Tran Dang Xuan ◽  
Tran Dang Khanh ◽  
Hoang-Dung Tran ◽  
Kifayatullah Kakar
Keyword(s):  
Protein Content ◽  
Grain Quality ◽  
Cooking Quality ◽  
Amylose Content ◽  
Rice Grain ◽  
Gelatinization Temperature ◽  
Rice Varieties ◽  
Irrigation Interval ◽  
Gel Consistency ◽  
Alkali Digestion

The management of amylose and protein contents and cooking quality are the main challenges in rice macronutrients and quality improvement. This experiment was conducted to examine the rice grain quality, alkali digestion, and gel consistency responses to irrigation interval after anthesis. Three rice varieties (K1, K3, and K4) were subjected to different irrigation intervals (1, 2, and 3 d) after anthesis. The findings of this study showed that the protein content was markedly increased from 6.53–6.63% to 9.93–10.16%, whilst the amylose content was decreased significantly from 22.00–22.43% to 16.33–17.56% under stressed treatments at irrigation intervals, whilst the quantity of fatty acids was not affected. The 3-d irrigation interval recorded the highest protein content but the lowest amylose value. In addition, this treatment shows lower gelatinization temperature, but it is negatively associated with hard gel consistency under irrigation interval. This study highlights that the water management following a 3-d irrigation interval from anthesis is a useful and simple treatment to improve rice nutrients and grain cooking quality.

scholarly journals Identification and Expression Profiling of Nonphosphorus Glycerolipid Synthase Genes in Response to Abiotic Stresses in Dendrobium catenatum

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1204
Author(s):  
Xinqiao Zhan ◽  
Yichun Qian ◽  
Bizeng Mao
Keyword(s):  
Salt Stress ◽  
Drought Stress ◽  
Expression Profiling ◽  
Abiotic Stresses ◽  
Membrane Lipids ◽  
Chinese Herb ◽  
Growth Stages ◽  
Limited Information ◽  
Gene Structures ◽  
Functional Investigation

Dendrobium catenatum, a valuable Chinese herb, frequently experiences abiotic stresses, such as cold and drought, under natural conditions. Nonphosphorus glycerolipid synthase (NGLS) genes are closely linked to the homeostasis of membrane lipids under abiotic stress in plants. However, there is limited information on NGLS genes in D. catenatum. In this study, a total of eight DcaNGLS genes were identified from the D. catenatum genome; these included three monogalactosyldiacylglycerol synthase (DcaMGD1, 2, 3) genes, two digalactosyldiacylglycerol synthase (DcaDGD1, 2) genes, and three sulfoquinovosyldiacylglycerol synthase (DcaSQD1, 2.1, 2.2) genes. The gene structures and conserved motifs in the DcaNGLSs showed a high conservation during their evolution. Gene expression profiling showed that the DcaNGLSs were highly expressed in specific tissues and during rapid growth stages. Furthermore, most DcaNGLSs were strongly induced by freezing and post-freezing recovery. DcaMGD1 and DcaSQDs were greatly induced by salt stress in leaves, while DcaDGDs were primarily induced by salt stress in roots. Under drought stress, most DcaNGLSs were regulated by circadian rhythms, and DcaSQD2 was closely associated with drought recovery. Transcriptome analysis also revealed that MYB might be regulated by circadian rhythm and co-expressed with DcaNGLSs under drought stress. These results provide insight for the further functional investigation of NGLS and the regulation of nonphosphorus glycerolipid biosynthesis in Dendrobium.

scholarly journals Effect of Herbicides on the Management of the Invasive Weed Solanum rostratum Dunal (Solanaceae)

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 284
Author(s):  
Jackline Abu-Nassar ◽  
Maor Matzrafi
Keyword(s):  
Growth Stage ◽  
Late Summer ◽  
Early Spring ◽  
Growth Stages ◽  
Weed Species ◽  
Invasive Weed ◽  
Solanum Rostratum ◽  
Stage 4 ◽  
Chemical Solutions ◽  
Late Growth

Solanum rostratum Dunal is an invasive weed species that invaded Israel in the 1950s. The weed appears in several germination flashes, from early spring until late summer. Recently, an increase in its distribution range was observed, alongside the identification of new populations in the northern part of Israel. This study aimed to investigate the efficacy of herbicide application for the control of S. rostratum using two field populations originated from the Golan Heights and the Jezreel Valley. While minor differences in herbicide efficacy were recorded between populations, plant growth stage had a significant effect on herbicide response. Carfentrazone-ethyl was found to be highly effective in controlling plants at both early and late growth stages. Metribuzin, oxadiazon, oxyfluorfen and tembutrione showed reduced efficacy when applied at later growth stage (8–9 cm height), as compared to the application at an early growth stage (4–5 cm height). Tank mixes of oxadiazon and oxyfluorfen with different concentrations of surfactant improved later growth stage plant control. Taken together, our study highlights several herbicides that can improve weed control and may be used as chemical solutions alongside diversified crop rotation options. Thus, they may aid in preventing the spread and further buildup of S. rostratum field populations.

scholarly journals Green Synthesis of Zinc Oxide Nanoparticles: Fortification for Rice Grain Yield and Nutrients Uptake Enhancement

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 584
Author(s):  
Omnia M. Elshayb ◽  
Khaled Y. Farroh ◽  
Heba E. Amin ◽  
Ayman M. Atta
Keyword(s):  
Zinc Oxide ◽  
Grain Yield ◽  
Field Experiments ◽  
Metal Oxide Nanoparticles ◽  
Foliar Spray ◽  
Yield Component ◽  
Oxide Nanoparticles ◽  
Rice Grain ◽  
Zno Nps ◽  
Agriculture Sector

Applications of metal oxide nanoparticles in the agriculture sector are being extensively included as the materials are considered superior. In the present work, zinc oxide nanoparticle (ZnO NPs), with a developing fertilizer, is applied in the fortification of rice grain yield and nutrient uptake enhancement. To evaluate the role of ZnO NP, two field experiments were conducted during the 2018 and 2019 seasons. ZnO NPs were small, nearly spherical, and their sizes equal to 31.4 nm, as proved via the dynamic light scattering technique. ZnO NPs were applied as a fertilizer in different concentrations, varying between 20 and 60 mg/L as a foliar spray. The mixture of ZnSO4 and ZnO NP40 ameliorated yield component and nutrients (N, K, and Zn) uptake was enhanced compared to traditional ZnSO4 treatment. Nevertheless, the uptake of the phosphorous element (P) was adversely affected by the treatment of ZnO NPs. Thus, treatment via utilizing ZnO NPs as a foliar with a very small amount (40 ppm) with of basal ZnSO4 led to a good improvement in agronomic and physiological features; eventually, higher yield and nutrient-enriched rice grain were obtained.

Novel Wx alleles generated by base editing for improvement of rice grain quality

2021 ◽  
Author(s):  
Xiaorui Huang ◽  
Fei Su ◽  
Sheng Huang ◽  
Fating Mei ◽  
Xiaomu Niu ◽  
...  
Keyword(s):  
Grain Quality ◽  
Rice Grain ◽  
Base Editing
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