Two field experiments were conducted during the seasons of 2017-2018 and 2018-2019 at Baramoon Research Station, Mansoura, Dakahlia Governorate, Egypt, to study the effect of irrigation intervals and foliar application with nano-potassium and boron fertilizers under mineral potassium fertilization on productivity and quality of globe artichoke French Hyrious variety. The experiment divided into 36 treatments, representing the combinations of three irrigation intervals (10, 20 and 30 days) as vertical-plot, three rates of potassium fertilization (50, 75 and 100%) as horizontal plot and four foliar application rates of Nano-fertilizers (without, 3000 ppm K, 50 ppm B and 3000 ppm nano-K + 50 ppm nano-B) as split plot. The design of the experiment was a strip-split plot with three replicates. The results indicated that the fertilization of globe artichoke plants with potassium at 100% (200 kg/fed. potassium sulfate.) or 75% (150 kg/fed. potassium sulfate.) with foliar application by a mixture of 3000 ppm nano-K+ 50 ppm nano-B treatment and irrigation every 20 days to obtain the best yield (early and total) parameters and the highest quality. Therefore, we recommend this treatment because it saves in the amount of potassium and the amount of irrigation water and thus reduces the costs of artichokes production and environmental pollution under the conditions of this study.

Two field experiments were conducted at Baramoon Research Station, Mansoura, Dakahlia Governorate, Egypt, during the two seasons of 2017-2018 and 2018-2019, to investigate the effect of irrigation intervals and foliar application with nano potassium and boron fertilizers under mineral potassium fertilization on plant vegetative growth parameters and mineral content in leaves of globe artichoke, French Hyrious variety. The experiment included 36 treatments, representing the combinations of three irrigation intervals (10, 20 and 30 days) as vertical-plot, three rates of potassium fertilization (50, 75 and 100%) as horizontal plot and four foliar application rates of Nano-fertilizers (without, 3000 ppm K, 50 ppm B and 3000 ppm K + 50 ppm B) as split plot. The design of the experiment was a strip-split plot with three replicates. The results revealed that the fertilization of globe artichoke plants with potassium at 100% (200 kg/fed. potassium sulfate.) or 75% (150 kg/fed. potassium sulfate) with foliar application by a mixture of 3000 ppm nano-K+ 50 ppm nano-B treatment and irrigation every 20 days to obtain the best vegetative growth parameters and the highest nutrient contents.

The comparative population growth parameters ofthe two-spotted s pider mite, Tetranychus urticae Koch on cucurbits vegetable crops; Sudan ian, Musk and Snake melons commonly planted in numerous districts ofEgy'pt were studied. These parameters were estimated at 25 ± I°C, 60 ± 5% R.ll. and a photoperiod of 14:10 hrs . (L: D) daily. Developmental t imc , surv ival to adult stage and egg hatchability were similar among the three host plants, hut significant va riation in fecundity and longevity , resulting in large differences tor population growth parameters. such as the intrinsic rate ofnatural increase (r 111 ) , net reproductive rate (Ro) and finite rate of increase(),). were detected. Sudan ian melon was th e most favorable host for the two-spotted spider mite wit h rm (0.297), fi.JIIowcd by Mu s k melon (0.243) ofT s prings/female/day. The s lowest population growth was observed on Snake melon with rm (0.231) off springs/ female /day.

No abstract

The experiment was conducted at Ismailia Agricultural Research Station, Ismailia Governorate, throughout two successive seasons of 2004 and 2005. Fourteen weed associated with peanut plants, six belong to annual broad leaves, Portulaca operacea, Amaranthus caudatus, Corchorus clitorius, Xanthinum spinosm, and Euphorbia prunifolia, six belong to annual narrow leaves, Eichonoclloa colonum, Eleusine indica, Dinebra retvoflexa, Digitaria sanguinalis, Cenchrus biflorus roxb and Dacteloctenium agyptium and only two species belong to perennial weeds, Cynodon dactylon and Cyperus rotundus were monitored. The efficiency of two herbicides, pendimethalin and oxyfluorfen, against peanut weeds as chemical control were evaluated. Pendimethalin induced the highest effect on total weed followed by oxyfluorfen as pre-emergence at recommended rate 45 days after sowing throughout the two studied seasons 2004 and 2005. The effect of each of the two tested herbicides, at half of recommended rate resulted in markedly less than that when used at full recommended rate. Two mechanical means (hand-hoeing and weed free) were practiced to control peanut weeds. Weeds free treatment was generally more effective than pendimethalin and oxyfluorfen at half-recommended rate. The effect of the two mechanical means was still less than that of the two tested herbicides at recommended rates at 45 days after sowing. Weed free was more effective than all tested treatments at 105 days after sowing; throughout the two experimental seasons of 2004 and 2005. All the tested treatments affected the dry weights of peanut weeds. Weed free was more effective than all the tested means at 105 days after sowing. Weed free had the highest effect on the dry weights of peanut weeds as compared to those of other treatments.