Pub Date : 2021-02-09DOI: 10.21608/AGRO.2021.51233.1239
A. Said, Y. Hefny
Drought stress is the primary restricting factor of crop productivity in Egypt. The development of drought-tolerant lines is urgent. However, drought tolerance is a complex trait. So, this work aimed to reveal the genetic background and gene effects controlling of yield parameters and to discover the epistasis in two bread wheat crosses; Sakha 93 × pureline 5 and Gemmeiza 10 × pureline 42 under irrigated and drought conditions, utilizing seven generations viz. P1, P2, F1, BC1, BC2, F2 and F3. Genetic analysis revealed that additive and dominance effects are involved in the genetics for most traits in both crosses and conditions. Both additive x additive and additive x dominance effects were significant in most cases, supporting the presence of duplicate type of epistasis. Therefore, early generation selection would have failed. F1 hybrids (Drought susceptibility indexes were 0.278 in cross I and 0.295 in cross II), were less affected by drought stress conditions, displaying the presence of heterobeltiosis for drought tolerance. Broad-sense and narrow-sense heritabilities and genetic advance ranged from moderate to high for most of the studied traits and these two crosses could be selected to produce high yielding lines under drought conditions. R
{"title":"Inheritance of Drought Tolerance Using Six Populations Model in Two Bread Wheat Crosses","authors":"A. Said, Y. Hefny","doi":"10.21608/AGRO.2021.51233.1239","DOIUrl":"https://doi.org/10.21608/AGRO.2021.51233.1239","url":null,"abstract":"Drought stress is the primary restricting factor of crop productivity in Egypt. The development of drought-tolerant lines is urgent. However, drought tolerance is a complex trait. So, this work aimed to reveal the genetic background and gene effects controlling of yield parameters and to discover the epistasis in two bread wheat crosses; Sakha 93 × pureline 5 and Gemmeiza 10 × pureline 42 under irrigated and drought conditions, utilizing seven generations viz. P1, P2, F1, BC1, BC2, F2 and F3. \u0000Genetic analysis revealed that additive and dominance effects are involved in the genetics for most traits in both crosses and conditions. Both additive x additive and additive x dominance effects were significant in most cases, supporting the presence of duplicate type of epistasis. Therefore, early generation selection would have failed. \u0000F1 hybrids (Drought susceptibility indexes were 0.278 in cross I and 0.295 in cross II), were less affected by drought stress conditions, displaying the presence of heterobeltiosis for drought tolerance. Broad-sense and narrow-sense heritabilities and genetic advance ranged from moderate to high for most of the studied traits and these two crosses could be selected to produce high yielding lines under drought conditions. \u0000R","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42517948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-09DOI: 10.21608/AGRO.2021.45324.1235
Y. Hefny, A. Said
Sugar beet (Beta vulgaris L.) is the second source of sugar around the world after sugar cane. Two field experiments were carried out in the Research Farm , Faculty of Agriculture, Sohag University, in two successive seasons of 2016/2017 and 2017/2018 to study the effect of Nano-micronutrients fertilizer on yield and quality of sugar beet varieties under normal and late sowing conditions. The results showed the early sowing at 21st October increased the root, quality, sugar and root yields comparing with the late sowing at 21st November in both seasons. the foliar application at 60 days after sowing exhibited the higher values of all studied traits comparing with both of foliar application at 105 days and non-fertilizer in both seasons. The four sugar beet varieties (Nabila, Karta, Kosmas and Tesla) differed significantly on all studied traits in the two seasons. Tesla variety was superior than the others of all studied traits. The highest sucrose % (18.32 and 18.42 %) and sugar yield (5.20 and 5.83 ton/fed) were obtained from Tesla variety with Nano-fertilized at 60 days from sowing of early sowing in 21st October in 2016/2017 and 2017/2018 seasons respectively. According to principal component analysis, the most appropriate sugar beet varieties for selecting of sugar yield was Tesla variety under the most treatments of foliar Nano- micronutrients in the two environments (stable genotype and recommended for the test environments), especially under D1 (sowing at 21 October ) and F2 (spraying time of 60 day after planting).
{"title":"Effect of Nano-micronutrients Fertilization on Yield and Quality of some Sugar Beet Varieties under Early and Late Sowing Dates","authors":"Y. Hefny, A. Said","doi":"10.21608/AGRO.2021.45324.1235","DOIUrl":"https://doi.org/10.21608/AGRO.2021.45324.1235","url":null,"abstract":"Sugar beet (Beta vulgaris L.) is the second source of sugar around the world after sugar cane. Two field experiments were carried out in the Research Farm , Faculty of Agriculture, Sohag University, in two successive seasons of 2016/2017 and 2017/2018 to study the effect of Nano-micronutrients fertilizer on yield and quality of sugar beet varieties under normal and late sowing conditions. The results showed the early sowing at 21st October increased the root, quality, sugar and root yields comparing with the late sowing at 21st November in both seasons. the foliar application at 60 days after sowing exhibited the higher values of all studied traits comparing with both of foliar application at 105 days and non-fertilizer in both seasons. The four sugar beet varieties (Nabila, Karta, Kosmas and Tesla) differed significantly on all studied traits in the two seasons. Tesla variety was superior than the others of all studied traits. The highest sucrose % (18.32 and 18.42 %) and sugar yield (5.20 and 5.83 ton/fed) were obtained from Tesla variety with Nano-fertilized at 60 days from sowing of early sowing in 21st October in 2016/2017 and 2017/2018 seasons respectively. According to principal component analysis, the most appropriate sugar beet varieties for selecting of sugar yield was Tesla variety under the most treatments of foliar Nano- micronutrients in the two environments (stable genotype and recommended for the test environments), especially under D1 (sowing at 21 October ) and F2 (spraying time of 60 day after planting).","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45176819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-02DOI: 10.21608/AGRO.2021.51398.1240
E. Salem
Saltiness is the most restricting factor for agriculture in arid and semi-arid regions, in addition to zinc is deposited in forms not accessible to plants in calcareous soils. Generally, less availability of nutrients associated salinity is a stumbling block in front of the agricultural expansion. Therefore, during the 2018 and 2019 seasons, two field experiments were conducted at the Desert Research Center, Agriculture Experimental Station at Ras Sudr, South Sinai Governorate, Egypt. The cooperative impact of seed priming by soaking seeds in ascorbic acid at 0, 100, 200, and 300 mg ASC/L and the soil application of zinc at the rates of 0, 3, 6, 12, and 24 kg zinc sulfate/ha on sunflower yields and its attributes were studied. The results reported that plant height, head diameter, number of seeds/head, seed weight/head, seed index, in addition to biological, seed and oil yields and seed oil content responded considerably to ascorbic acid (ASC) in both seasons. In this connection, sunflower seeds soaked in 200 mg ASC/L was the Potency practice compared to other treatments in both years. While zinc application (ZnSO4) significantly affected all the aforementioned traits in both seasons. The findings of this study suggest that soaking sunflower seeds in 200 mg/L ASC alongside with ZnSO4 fertilization at a rate of 12 kg/ha could be used to alleviate the harmful effects of salinity stress and consequently could improve the sunflower yield.
{"title":"Effect of Ascorbic Acid and Zinc on the Productivity of Sunflower (Helianthus annuus L.) under Saline Stress Conditions","authors":"E. Salem","doi":"10.21608/AGRO.2021.51398.1240","DOIUrl":"https://doi.org/10.21608/AGRO.2021.51398.1240","url":null,"abstract":"Saltiness is the most restricting factor for agriculture in arid and semi-arid regions, in addition to zinc is deposited in forms not accessible to plants in calcareous soils. Generally, less availability of nutrients associated salinity is a stumbling block in front of the agricultural expansion. Therefore, during the 2018 and 2019 seasons, two field experiments were conducted at the Desert Research Center, Agriculture Experimental Station at Ras Sudr, South Sinai Governorate, Egypt. The cooperative impact of seed priming by soaking seeds in ascorbic acid at 0, 100, 200, and 300 mg ASC/L and the soil application of zinc at the rates of 0, 3, 6, 12, and 24 kg zinc sulfate/ha on sunflower yields and its attributes were studied. The results reported that plant height, head diameter, number of seeds/head, seed weight/head, seed index, in addition to biological, seed and oil yields and seed oil content responded considerably to ascorbic acid (ASC) in both seasons. In this connection, sunflower seeds soaked in 200 mg ASC/L was the Potency practice compared to other treatments in both years. While zinc application (ZnSO4) significantly affected all the aforementioned traits in both seasons. The findings of this study suggest that soaking sunflower seeds in 200 mg/L ASC alongside with ZnSO4 fertilization at a rate of 12 kg/ha could be used to alleviate the harmful effects of salinity stress and consequently could improve the sunflower yield.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48544221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-27DOI: 10.21608/AGRO.2021.33773.1220
G. Abbas, M. Ahsan, M. Asghar, M. Rizwan, F. Ahmad, M. Akram
Seventy two Mungbean × Mashbean recombinant genotypes were evaluated in the field for seed yield and its components traits. Highly significant differences were observed among the genotypes. The magnitudes of genotypic and phenotypic coefficients of variability ranged from 2.73% to 28.97% and 3.46% to 31.95%, respectively. Pods per plant exhibited maximum amount of genetic variability followed by clusters per plant and seed yield per plant. 100-seed weight was observed to be the most heritable trait with greatest magnitude (h2 = 99%). Pods per plant had maximum positive and significant genotypic (rg = 0.90) and phenotypic (rp = 0.86) correlations with clusters per plant. Both traits were identified as the most important characters as they had strong genetic and phenotypic relationships with seed yield. Selection for number of pods per plant among different agronomic traits showed greatest improvement in seed yield that was 54% of the improvement possible through direct selection for seed yield. Likewise, clusters per plant and plant height also showed higher improvement in seed yield through indirect selection which was 29% and 20% of the improvement possible by direct selection for yield. Days to flowering also showed promise for 8% of the improvement in seed yield possible through direct selection for seed yield. Thirty six promising recombinants were selected on the basis of desirability index. On the basis of overall performance seven recombinant genotypes, viz; MMH 1115, MMH 4224, MMH 4255, MMH 7124, MMH 2112, MMH 4295 and MMH 2225 were selected as elite lines.
{"title":"Evaluation of Genetic Parameters for Yield and Related Traits in new Recombinants interspecific Mungbean × Mashbean Genotypes","authors":"G. Abbas, M. Ahsan, M. Asghar, M. Rizwan, F. Ahmad, M. Akram","doi":"10.21608/AGRO.2021.33773.1220","DOIUrl":"https://doi.org/10.21608/AGRO.2021.33773.1220","url":null,"abstract":"Seventy two Mungbean × Mashbean recombinant genotypes were evaluated in the field for seed yield and its components traits. Highly significant differences were observed among the genotypes. The magnitudes of genotypic and phenotypic coefficients of variability ranged from 2.73% to 28.97% and 3.46% to 31.95%, respectively. Pods per plant exhibited maximum amount of genetic variability followed by clusters per plant and seed yield per plant. 100-seed weight was observed to be the most heritable trait with greatest magnitude (h2 = 99%). Pods per plant had maximum positive and significant genotypic (rg = 0.90) and phenotypic (rp = 0.86) correlations with clusters per plant. Both traits were identified as the most important characters as they had strong genetic and phenotypic relationships with seed yield. Selection for number of pods per plant among different agronomic traits showed greatest improvement in seed yield that was 54% of the improvement possible through direct selection for seed yield. Likewise, clusters per plant and plant height also showed higher improvement in seed yield through indirect selection which was 29% and 20% of the improvement possible by direct selection for yield. Days to flowering also showed promise for 8% of the improvement in seed yield possible through direct selection for seed yield. Thirty six promising recombinants were selected on the basis of desirability index. On the basis of overall performance seven recombinant genotypes, viz; MMH 1115, MMH 4224, MMH 4255, MMH 7124, MMH 2112, MMH 4295 and MMH 2225 were selected as elite lines.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41717416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-22DOI: 10.21608/AGRO.2021.53113.1243
O. Ali, M. Abdel-Aal
EGYPT is currently experiencing water shortage, which causes a threat to crop productivity and efficiency of water use, especially in light of the current climatic changes. A field experiment was done to study effect of irrigation intervals (12, 16 and 20 days), soil amendments (compost, biochar, polyacrylamide “PAM” and hydrogel) beside control and their interaction on root, morpho-physiological, yield and quality traits of soybean.1- Prolonging irrigation intervals up to 20 days significantly decreased root characters (length and dry weight of root, number and dry weight of nodules/ plant and nitrogenase activity), morphological characters (plant height, leaves number/ plant, leaf area and total dry weight/ plant), physiological traits (relative water content and chlorophyll), yield (pods number/ plant, number and weight of seeds/ pod, 100-seed weight and seed yields/ plant and fed) and quality (protein% and oil and protein yields/fed).2- Application of soil amendments caused a significant and positive effect on root, morpho-physiological characters as well as yield and seed quality compared to control. Hydrogel application produced the highest values of most abovementioned characters.3- The interaction revealed that highest values of most characters were obtained when plants were irrigated every 12 days and treated with hydrogel. Plants irrigated every 16 days produced the highest values of root length and oil yield when treated with PAM and hydrogel, respectively.4- Irrigation every 16 and 20 days can save water amounted to 18.62 and 27.82% compared to irrigation every 12 days, respectively. Irrigation every 16 days associated with hydrogel produced the highest values of water use efficiency (WUE) indicating that it was more effective for productivity and water consumption.
{"title":"Importance of Some Soil Amendments on Improving Growth, Productivity and Quality of Soybean Grown under Different Irrigation Intervals","authors":"O. Ali, M. Abdel-Aal","doi":"10.21608/AGRO.2021.53113.1243","DOIUrl":"https://doi.org/10.21608/AGRO.2021.53113.1243","url":null,"abstract":"EGYPT is currently experiencing water shortage, which causes a threat to crop productivity and efficiency of water use, especially in light of the current climatic changes. A field experiment was done to study effect of irrigation intervals (12, 16 and 20 days), soil amendments (compost, biochar, polyacrylamide “PAM” and hydrogel) beside control and their interaction on root, morpho-physiological, yield and quality traits of soybean.1- Prolonging irrigation intervals up to 20 days significantly decreased root characters (length and dry weight of root, number and dry weight of nodules/ plant and nitrogenase activity), morphological characters (plant height, leaves number/ plant, leaf area and total dry weight/ plant), physiological traits (relative water content and chlorophyll), yield (pods number/ plant, number and weight of seeds/ pod, 100-seed weight and seed yields/ plant and fed) and quality (protein% and oil and protein yields/fed).2- Application of soil amendments caused a significant and positive effect on root, morpho-physiological characters as well as yield and seed quality compared to control. Hydrogel application produced the highest values of most abovementioned characters.3- The interaction revealed that highest values of most characters were obtained when plants were irrigated every 12 days and treated with hydrogel. Plants irrigated every 16 days produced the highest values of root length and oil yield when treated with PAM and hydrogel, respectively.4- Irrigation every 16 and 20 days can save water amounted to 18.62 and 27.82% compared to irrigation every 12 days, respectively. Irrigation every 16 days associated with hydrogel produced the highest values of water use efficiency (WUE) indicating that it was more effective for productivity and water consumption.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48594615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-20DOI: 10.21608/AGRO.2021.49359.1238
M. El-Fouly, E. A. El-Nour
A pot experiment was carried out at the green house of Fertilization Technology Department to investigate the effect of salinity through irrigation water (0.0 and 4000 ppm NaCl) and foliar feeding with chelated 12% Fe, Zn and Mn in the form of EDTA each at rate of 1g /L as individual nutrient in addition to mixture of them on bean growth and nutrients uptake. Results revealed that salinity resulted in significant reduction in dry weight. However, foliar feeding showed significant increments in the bean dry weight. Normal soil condition in combination with foliar feeding with the mixture of micronutrients achieved the highest dry weight increments Results showed that salinity had significant negative effects on micronutrients uptake, while it had no marked effects on macronutrients uptake except in case of K where salinity markedly reduced its uptake. Foliar feeding with micronutrients either as individual nutrient or mixture of them showed significant increases in macro and micronutrients uptake. Spraying bean plants with the mixture on micronutrients showed the highest marked increments as compared with control and the other micronutrient treatments. Moreover, the interaction between salinity and micronutrient treatments on macro and micronutrients uptake was significant, where; most of calculated macro and micronutrients uptake showed the highest values by spraying bean plants with the mixture treatment and under the normal soil condition. The only exception, was in case of N uptake calculated in bean, stem where, the highest value resulted form the spraying plants with Fe in combination with normal soil condition.
{"title":"Foliar Feeding With Micronutrients to Overcome Adverse Salinity Effects on Growth and Nutrients Uptake of Bean (Phaseolus vulgaris)","authors":"M. El-Fouly, E. A. El-Nour","doi":"10.21608/AGRO.2021.49359.1238","DOIUrl":"https://doi.org/10.21608/AGRO.2021.49359.1238","url":null,"abstract":"A pot experiment was carried out at the green house of Fertilization Technology Department to investigate the effect of salinity through irrigation water (0.0 and 4000 ppm NaCl) and foliar feeding with chelated 12% Fe, Zn and Mn in the form of EDTA each at rate of 1g /L as individual nutrient in addition to mixture of them on bean growth and nutrients uptake. Results revealed that salinity resulted in significant reduction in dry weight. However, foliar feeding showed significant increments in the bean dry weight. Normal soil condition in combination with foliar feeding with the mixture of micronutrients achieved the highest dry weight increments Results showed that salinity had significant negative effects on micronutrients uptake, while it had no marked effects on macronutrients uptake except in case of K where salinity markedly reduced its uptake. Foliar feeding with micronutrients either as individual nutrient or mixture of them showed significant increases in macro and micronutrients uptake. Spraying bean plants with the mixture on micronutrients showed the highest marked increments as compared with control and the other micronutrient treatments. Moreover, the interaction between salinity and micronutrient treatments on macro and micronutrients uptake was significant, where; most of calculated macro and micronutrients uptake showed the highest values by spraying bean plants with the mixture treatment and under the normal soil condition. The only exception, was in case of N uptake calculated in bean, stem where, the highest value resulted form the spraying plants with Fe in combination with normal soil condition.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41680828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Timon Oghenewewa, O. Shakede, Uyiosasere Dennis Aig
{"title":"Comparative Effect of NPK (15:15:15) and Poultry Manure on the Growth and Yield of White Yam (Dioscorea rotundata Poir.)","authors":"Timon Oghenewewa, O. Shakede, Uyiosasere Dennis Aig","doi":"10.3923/ja.2021.17.24","DOIUrl":"https://doi.org/10.3923/ja.2021.17.24","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82541861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dry Matter Production, Leaf Area Index, Yield and Yield Components of Myanmar Local Rice (Oryza sativa L.) Genotypes Observation","authors":"Su Latt Phyu, Nyo Mar Htwe, Chan Nyein Thu","doi":"10.3923/ja.2021.9.16","DOIUrl":"https://doi.org/10.3923/ja.2021.9.16","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88593226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Sirait, Agnes Imelda Man, Osten M. Samosir, Robert G. Marpaung, Nurhayati, C. Manalu
{"title":"Growth Palm Oil Seedling (Elaeis guineensis Jacq.) via NPK Fertilization and Different Frequency of Watering","authors":"B. Sirait, Agnes Imelda Man, Osten M. Samosir, Robert G. Marpaung, Nurhayati, C. Manalu","doi":"10.3923/JA.2021.1.8","DOIUrl":"https://doi.org/10.3923/JA.2021.1.8","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81557518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.21608/agro.2020.32917.1217
A. Morsy, E. Mohamed, S. Farag, M. Tantawy
Two experiments were performed at Faculty of Agriculture, El-Minia University Egypt, during two consecutive seasons 2017-18 and 2018-19 to evaluate the impact of weed removal period and different irrigation regimes on weeds, critical period of weed competition and yield of wheat crop and its components. A strip-plot design with three replications was used. Four irrigation regimes were in the horizontal plots and 8 treatments of weed competition (4 weed-free periods and 4 weed competition periods) were in vertical plots. Results showed that omitting 2 irrigation (IR4) significantly decreased total density and dry weight of weeds, wheat traits plant height, spike length, No. of grains spike-1, 1000-grain weight, No. of spikes m-2, grain yield and grain ability. Weed infestation for whole season significantly decreased all studied traits compared with weed removal even once after wheat sowing (DAS). Maximum yield losses of wheat due to weed infestation in whole season were 26.04 and 25.62% compared with weed-free treatment in the 1st and 2nd seasons, respectively. Cubic model was the best model for weed-free and weed competition over all treatments of the two seasons. The critical periods for weed control were 42 and 32 to 62 and 52 DAS in the two seasons.
{"title":"Effects of Irrigation Regimes and Duration of Weed Interference on Grain Yield of Wheat (Triticum aestivum L.) in Middle Egypt","authors":"A. Morsy, E. Mohamed, S. Farag, M. Tantawy","doi":"10.21608/agro.2020.32917.1217","DOIUrl":"https://doi.org/10.21608/agro.2020.32917.1217","url":null,"abstract":"Two experiments were performed at Faculty of Agriculture, El-Minia University Egypt, during two consecutive seasons 2017-18 and 2018-19 to evaluate the impact of weed removal period and different irrigation regimes on weeds, critical period of weed competition and yield of wheat crop and its components. A strip-plot design with three replications was used. Four irrigation regimes were in the horizontal plots and 8 treatments of weed competition (4 weed-free periods and 4 weed competition periods) were in vertical plots. Results showed that omitting 2 irrigation (IR4) significantly decreased total density and dry weight of weeds, wheat traits plant height, spike length, No. of grains spike-1, 1000-grain weight, No. of spikes m-2, grain yield and grain ability. Weed infestation for whole season significantly decreased all studied traits compared with weed removal even once after wheat sowing (DAS). Maximum yield losses of wheat due to weed infestation in whole season were 26.04 and 25.62% compared with weed-free treatment in the 1st and 2nd seasons, respectively. Cubic model was the best model for weed-free and weed competition over all treatments of the two seasons. The critical periods for weed control were 42 and 32 to 62 and 52 DAS in the two seasons.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46651727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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