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The experiments were carried out at the Vegetable Research - Development Station Bacau in open field crops for seeds: bean, parsley, beetroot, celery, lovage, tomato, pepper, eggplant for control of aphids attack. The degree attack (DA%) of black bean aphid was high on the bean - 24.6 %, followed by seed plants of beetroot 11% , parsley - 7%, lovage - 4.2%, celery - 3.5%. Green peach aphid had the biggest attack on the pepper 14.2%, followed at the eggplant - 7.4%, tomato - 5.6% and bean 0.1%. Green potato aphid had a smaller DA% on: tomato - 2.5%, pepper - 1.4%, eggplant - 0.2%. Potato aphid had a smaller DA% in: tomato - 1.8 %, pepper - 0.9%, eggplant - 0.1%. Cabbage aphid attack only cabbage plant of seeds, DA% being 5.9 %. The efficiency of products studied for the control of black bean aphid attack had very good efficiency. So Teppeki - 0.14 kg/ha, had the best efficiency - 99.5%, followed by Mospilan - 0.15 kg/ha - 99.1%, Konflic - 0.3% - 98.4 and Neemes - 025 % - 94.3%. The efficiency of products studied for the control of green peach aphid attack was very good in all variant being over 90% All products had very good efficiency in control of green potato aphid, over 93%. In condition of low attack of potato aphid which did not exceeded 1.8% DA, all variants had over 93%. The efficiency of products in control of aphids at plant cabbage for seeds was very good: Konflic - 0.3% - 99.0 %, Neemes - 0.25 % - 94.2 %, Teppeki - 0.14 kg/ha - 99.6%, Mospilan - 0.15 kg/ha - 99.4% [ABSTRACT FROM AUTHOR]

The experiments were carried out at the Vegetable Research - Development Station Bacau in protected and opeen field crops of pepper - Dariana Bac variety. The study of optical absorption in the 653 nm and 931 nm wavelengths (close to infrared) showed different values of chlorophyll content (CCI) indices, depending on climatic conditions and pepper coating materials. Pepper plants in laboratory conditions, in the sun or in the shade, require artificial lighting, because the chlorophyll content decrease at 9.6-9.7 CCI. The highest chlorophyll content had the pepper plants covered with green textiles (variants 5 and 6), 10.8 CCI, at the sun or in the shade. On the 2nd place was the variant 7 - Plants in shading conditions with black textiles, in the sun with 10.5 CCI. It followed by V8 Plants in shading conditions with black textiles, in the shade with 10.3 CCI. Plants in greenhouse conditions, in the sun and in the shade had the same chlorophyll content, 10.0 CCI. The study of the optical absorption in the 530 nm and 931 nm wavelengths revealed different values of the anthocyanin content indices (ACI), related to the climatic conditions and the cover materials of the pepper crops. The pepper plants in laboratory conditions, in the sun or in the shade, require artificial lighting, because the anthocyanin content being the lowest 3.7-3.8 ACI. The highest anthocyanin content was found in pepper plants covered with black textiles (variants 7 and 8), 4.4 ACI, both in the sun and in the shade. On the 2nd place were the variants 5 and 6 ith 4.1 - 4.5 ACI. Plants in shading conditions with green textiles, in the sun and in the shade had 4.3 ACI. Control variants 9 and 10 (Plants in field conditions, in sun and shade - control) had 10.1 anthocyanin content index. In greenhouse conditions, in the sun and in the shade, the pepper plants had a content of 4.0 ACI. [ABSTRACT FROM AUTHOR]