The present experiment was carried out in greenhouse during 2018/2019 and 2019/2020 seasons to determine the effects of substrates media / combination and macro and micro nutrients within irrigation water. Uniform runners of strawberry cv. chandler were selected and planted in 12 and 13 th October 2018 and 2019 seasons, respectively, at a distance of 20 cm x 20 cm in 1m x 1m beds filled with eight different growing media combinations viz, sand (100%), peat moss (100%), vermiculite (100%), perlite (100%), peat moss: vermiculite (50% :50%), peat moss : perlite (50% :50%), vermiculite : perlite (50% :50%), and peat moss: vermiculite: perlite (33.3%: 33.3% : 33.3%) with three replications.The plants were irrigated at 1-2 days interval through micro drip irrigation during the initial stages and through drip irrigation during fruiting stages, while the treatments of macro and micro-nutrients dose of fertilizers were applied through fertigation using soluble fertilizers. The irrigation water was included two treatments, i.e. top water used as control, and fertilizer water which included macro and micronutrients, (%) i.e. N-P -K -Ca -Fe -Zn -B -Cu and Mn (
The present investigation was carried out during the two successive seasons of 2018/2019 and 2019/2020 at Abo El-Matameer, Behairah Governorate, Egypt to study the effect of seven treatments a foliar application, i.e. control (spray with water only), dry yeast at 2g/L, dry yeast at 4 g/L, urea at 0.5%, urea at 1.0%, urea at 1.5%, and urea at 2% on growth, yield and chemical content of lettuce plants.The experiment was arranged in a randomized complete blocks design in three replications. The obtained results are summarized as follows:Using urea and dry yeast extract levels as a foliar spray on vegetative growth characters, i.e. root length, head length, number of leaves/head, length and width of leaf, diameter of head , fresh and dry weight of head, pigments content ,chemical contents and head yield of lettuce and its components were significantly increased compared to the control treatment. The highest values of these characters of lettuce were recorded by using 1% urea, in both growing seasons. This treatment was followed by the treatments of dry yeast extract at 4 g/L, dry yeast extract at 2 g/L, and urea at 0.5%, respectively.Conclusively: It can be concluded that the treatment of 1% urea gave the best results on all characters of head lettuce. Key words: Head lettucefoliar spray with urea and dry yeast extract INTRODUCTION:Head lettuce (Lactuce sativa L.) is the world's most used salad crop. It is one the important leafy vegetable crops which are eaten fresh and is a major and extensively grown cool season vegetable best adapted to temperate locations (Rubatzky and Tamaguchi, 1997). It is taken as synonym of salads and contains about 6 -19% mineral elements on the dry weight basis. It is
Two field experiments were conducted during the winter seasons of 2017/2018 and 2018/2019 at a Private farm in San El. Haggar, Shrkia governorate, Egypt to evaluate the effect of potassium and phosphorus fertilizer and the formula of nano fertilizer with potassium and phosphorus on plant growth characters, chemical composition, productivity and storability of garlic cv. Chinase.The experimental design used in the two growing seasons was randomized completes blocks with three replications.This experiment was included 7 treatments, which were: control, P fertilizer ( P 2 O 5 at 90 kg/fedd, calcium superphosphate ), K fertilizer (K 2 O at 100 kg /fedd , potassium sulphate ), P 2 O 5 and K 2 O fertilizer ( 100+90 ), Nano P ( 5ml/l ), Nano K(5 ml/l), and nano P+K (2.5 +2.5 ml/l)The obtained results can be summarized as follows: The treatment of nano potassium + nano phosphorus, followed by the treatment of potassium + phosphorus had a significant effect and recorded the highest values of plant height, fresh and dry weight of whole plant in both growing seasons. While the lowest values of vegetative growth of garlic plants were recorded by the control treatment.There are a significant effect of the treatment of potassium + phosphorus fertilizer application caused a maximum values of average bulb weight, bulb diameter, number of cloves/ bulb and total yield / feddan. This treatment followed by the treatment of foliar application with nano potassium + nano phosphorus compared to the other treatments and control.The treatment of the combined effect between nano potassium and nano phosphorus caused a highest values and significant effect on the 1034 NESSMA ANWAR et al. macro. nutrients, i.e N, P and K of garlic leaves and nutritive values of garlic bulb compared to the other treatments and control.The total weight loss of garlic bulbs stored were reduced gradually by the treatment of potassium + phosphorus fertilizer followed by the treatment of nano potassium + nano phosphorus and recorded the lowest values in weight loss compared the control and other treatments.Conclusively, From these results, it can concluded that nano fertilizer can be compensate the high amounts of mineral fertilizer application which causes environmental pollution.
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