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Field experiment using three faba bean cultivars namely Sakha 1, Sakha 4 and Giza 716 was carried out to study the efficacy of foliar spraying chelated Fe, Mn and Zn individually on vegetative growth, yield and its components, some biochemical constituents and its relation to chocolate spot disease severity caused by Botrytis fabae Sard. during two successive seasons 2017/2018 and 2018/2019 at Etay El-Baroud Agricultural Research Station Farm, El-Beheira Governorate. Sakha 1 cv. had the highest shoot dry weight and leaf area/plant in both seasons. Sakha 4 cv. was the earliest flowering and maturity in the first and second seasons, respectively. Sakha 4 cultivar had the tallest plant and the heaviest 100-seed weight in both seasons, but Giza 716 had the highest number of pods/plant, seed yield /plant and seed yield/fed. in the first season, however Sakha 4 cv. was surpassed the other cultivars in the second season. Chelated Fe, Mn and Zn foliar spray had excellent effects in increasing faba bean growth and yield compared to the fungicide Mancozeb and control treatments. Zn treatment significant increased mean values of shoot dry weight, leaf area/plant, number of branches/plant and seed yield/plant in both seasons. Also, it had the first grade in case of the plant height and seed yield/fed. in the first season, only. Fe treatment significantly increased number of pods/plant and 100-seed weight in the first season, and seed yield/fed. in the second season. Giza 716 cv. had the highest content of chlorophyll a, chlorophyll b and chlorophyll a+b in both seasons. Sakha 4 cv. had the highest percentage of the seed carbohydrates and protein contents. In case of peroxidase and polyphenol oxidase activities, Giza 716 cv. had the first grade. Fe significantly increased chlorophyll a in the first season and chlorophyll b and chlorophyll a + b in both seasons. Zn treatment significantly increased seeds total carbohydrates%, total protein %, leaves peroxidase and polyphenol oxidase activities. Sakha 1 cv. had the least chocolate spot disease severity in the first season and Giza 716 in the second season. The three tested faba bean cultivars sprayed with Mancozeb reduced disease severity in both seasons followed by Fe in the first season and Zn in the second one. Data clear that there were negative association between disease severity and peroxidase and polyphenol oxidase activities in all cases. So it could be concluded that the used micronutrients could resist the detrimental effects of Botrytis fabae on the plant growth and improve yield production.

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Two faba bean (Vicia faba L.) cultivars namely Giza 716 and Giza 40 were investigated for their response to foliar application with some botanical extracts and salicylic acid to improve vegetative growth, yield, and its relation to chocolate spot disease caused by Botrytis fabae Sard. Garlic cloves (GE), onion bulb (OE), eucalyptus leaves (EE) extracts (50 and 100 ml/L) and salicylic acid (SA 100 and 200 ppm) were used during two successive seasons of 2017/2018 and 2018/2019 at Etay El-Baroud Agricultural Research Station Farm, El-Beheira Governorate. Under field conditions Giza 716 had better values of growth, agronomic parameters and higher leaves content of chlorophyll a, b, (a+b), seed content of total carbohydrates %, protein %, leaves peroxidase and catalase activities and total phenols in both seasons. GE, OE, EE and SA increased faba bean growth and yield compared to Mancozeb and control treatments. SA 200 ppm increased leaf area /plant after 95 days in the first season. It had the first grade of shoot dry weight after 75 and 95 days and seed weight/plant in the second season and increased leaf area /plant after 75 days, plant height, number of branches/plant, number of pods/plant, 100 seed weight and seed yield/fed in both seasons. It increased chlorophyll a in the first season, chlorophyll b in the second season and chlorophyll a+b in both seasons. As well as, it had the highest catalase activity, total phenols content and protein %. In this respect, GE 100 ml/L significantly increased shoot dry weight /plant after 75 days and leaf area/plant after 95 days in the first and second seasons, respectively. It significantly increased shoot dry weight/plant after 95 days and seed weight/plant in the first season only compared to Mancozeb and control treatments. B. fabae spore suspension was applied using two techniques; foliar spray and droplet on leaflets. Using detached leaf test in the laboratory, Giza 716 had lower disease severity % (DS %) and spot diameter than Giza 40. In case of spore suspension foliar spray technique the treatments of GE 100 ml/L, SA 200 ppm and Mancozeb had the least DS %. In case of spore suspension droplet technique the treatments of OE 50 and OE100 ml/L and Mancozeb had the least spot diameter values. Under field conditions, disease severity increased with increasing periods from 75 to 105 days. Giza 716 had the lower DS % after 75, 90 and 105 days from sowing in both seasons than Giza 40. SA 200 ppm and OE 100 ml/L had the lowest DS % values in the first and second seasons, respectively.

The aim of this study was to evaluate eight soybean genotypes to salinity stress. Plants were grown in sand culture in a greenhouse experiment and irrigated with one-tenth strength modified Hoagland nutrient solution with or without 50 mM NaCl. The experimental design was split plot, arranged in randomized completely block design with three replications. Main plot factor was salt stress level (0 and 50 mM NaCl) and sub-plot factor was soybean genotypes (Giza21, Giza22, Giza35, Giza82, Giza83, Giza111, Clark, and Crawford). After four weeks from sowing, the whole plants were collected. The results indicated that salinity induced significant decrease in plant growth of all soybean genotypes, since, salt stress decreased shoot height, whole plant, shoot and root fresh and dry weight and leaf area of all soybean genotypes. However, salt stress increased shoot/root ratio on fresh and dry weight basis, plant moisture content and electrolyte leakage of all soybean genotypes. Chlorophyll content index no significantly decreased with salt stress. Salt stress increased shoot and root Na + content while decreased K + content and K + /Na + ratio of shoot and root for all soybean genotypes. The obtained results showed that the eight soybean genotypes responded differently to salt stress. It seems that Giza82 was more tolerant and Clark was more sensitive to salinity than other genotypes. These genotypes can be arranged with respect to tolerance to salinity in the order: Giza82 > Giza35 > Giza21 > Giza22 > Giza111 > Crawford > Giza83 > Clark.