Testing variety of cucumber F1 Ciborg, F1 Bavarets in LIT crop culture

Relevance. The most popular cucumber in Russia is pickling type (lenght 10-12 cm). There are not a lot of varieties this type cucumber for high wire and LIT crop in Russian seeds market.Methods. Were tested russian varieties F1 Ciborg, F1 Bavarets (Gavrish company) in compare F1 Bjorn (Enza Zaden, Netherlands) – the most popular in Russia now. Russian customer prefer pickling type because of traditional Russian cuisine. Prices of pickling type cucumber at autumn-winter time in 1-1.5 times more than middle size type cucumber. We had artificial light 240 Wt/sq.m, sodium lamps, our substrate was rockwool – Belagro (company from Belarusian republic). This rockwool have normal quality for short crop (3-4 month for growing cucumber), our plant density 2.76 plant/sq.m it was optimal for our light conditions (natural light in our region and artificial light).Results. Fourteen days after we put plants on slabs we had problems with plants of both russian varieties (F1 Ciborg and F1 Bavarets). We saw yellow parts in leaves, decrease length of stems, lost flowers. We made a decision about too high level of artificial light. We had only one opportunity for decrease it switch off 50% of lamps. We made it and we had 120 Wt/sq.m that. Therefore, we spent 50% less electricity for russian varieties. We think varieties F1 Ciborg and F1 Bavarets not very good for winter crop and we had good results because in our situation we have winter-spring crop, and every day the part of artificial light decrease and the part of natural light increase. F1 Ciborg had a problem with CGMMV and was deleted in 24th week of 2020. But we suppose it depend from a lot of conditions: quality of labor, protection plants. We think it is necessary more additional research. Total yield (for ten weeks of harvesting in winter-spring crop) F1 Bavarets – 32.4 kg/sq.m., F1 Ciborg – 31.9 kg/sq.m more then had F1 Bjorn – 28.9 kg/sq.m. The best marketable condition was F1 Ciborg, the second F1 Bjorn.

ĐÁNH GIÁ KHẢ NĂNG SINH TRƯỞNG VÀ PHÁT TRIỂN CỦA MỘT SỐ GIỐNG HOA ĐỒNG TIỀN LÙN TẠI THÀNH PHỐ HUẾ, TỈNH THỪA THIÊN HUẾ

Thí nghiệm thực hiện trong vụ Đông Xuân năm 2020 tại thành phố Huế, tỉnh Thừa Thiên Huế nhằm mục đích tìm hiểu đặc điểm sinh trưởng, phát triển của 6 giống hoa đồng tiền lùn (ĐT) trồng chậu gồm có 305 (màu hồng), ĐT 308 (màu vàng), ĐT 315 (màu trắng), ĐT 320 (màu đỏ thẫm), ĐT 326 (màu đỏ đô), giống đối chứng (màu đỏ tươi) đã được trồng thử nghiệm tại tỉnh Thừa Thiên Huế trong 2 năm và xác định được giống hoa đồng tiền lùn phù hợp với điều kiện sinh thái tỉnh Thừa Thiên Huế. Kết quả nghiên cứu cho thấy các giống tham gia thí nghiệm có thời gian sinh trưởng phù hợp với điều kiện địa phương (73 - 93 ngày). Các giống hoa đồng tiền lùn thí nghiệm đều có số hoa trên cây dao động từ 1,3 - 1,9 hoa, đường kính hoa đạt yêu cầu thẩm mĩ, độ bền hoa dài, màu sắc hoa đẹp phù hợp với thị hiếu người tiêu dùng trên địa bàn thành phố Huế. Trong đó có 3 giống là ĐT 308 (màu vàng), ĐT 320 (màu đỏ thẫm) và ĐT 305 (màu hồng) có các chỉ tiêu sinh trưởng phát triển tốt hơn so với các giống khác và giống đối chứng. ABSTRACT The experiment was carried out in the Winter-Spring crop of 2020 in Hue city, Thua Thien Hue province with the aim of understanding the growth and development characteristics of 06 potted gerbera varieties including gerbera variety 305 (pink), gerbera variety 308 (yellow), gerbera variety 315 (white), gerbera variety 320 (dark red), gerbera variety 326 (brown red), control gerbera variety (fresh red) and identifying the dwarf gerbera variety suitable for the ecological condition of Thua Thien Hue province. The results of the study showed that the varieties in the experiment had suitable duration for local conditions (73 - 93 days). The experimental dwarf gerbera varieties had the number of flowers per plant ranging from 1.3 to 1.9 flowers, the flower diameter met the aesthetic requirements, long flower durability, beautiful flower color, and general all varieties are suitable for human interests and consumption in Hue city. 3 varieties including gerbera variety 308 (yellow), gerbera variety 320 (dark red), and gerbera variety 305 (pink) had better growth and development performances than other varieties and control variety.

Effects of Lime, Cow Manure Application with RhizobiumInoculation on Yield and Quality of the Peanut in the Grey Degraded Soil of Tri Ton town

The field study was carried out in the grey degraded soil of Tri Ton town during Winter-Spring and Summer-Autumn crop of 2019- 2020. The field experiment was carried out by four treatments and four replications. Four treatments of Winter-Spring crop: The control treatment applied NPK (100 kgUrea + 556 kgP2O5 + 100kg KCl); (NT2): application of NPK, lime with Rhizobium inoculation; (NT3): NPK, cow manure and Rhizobium inoculation; (NT4):NPK, cow manure and lime with Rhizobium. Four treatments of Summer-Autumn cropwere carried on the prior experiment (Winter-Spring crop).However, treatments did not apply to cow manure, lime and Rhizobium(only NPK).The maximum plant biomass (168 g), number of nodule (92.1), fresh and dry weight of fill pods (61.4 and 37.6 g, respectively), fresh and dry weight of empty pods (2.07 and 1.19 g ), weight of dry nodules (0.83 g ) per plant, yield (6.12 ton ha-1), protein and oil in seeds (26.1 and 50.1%, respectively) were observed in cow manure and lime applied with Rhizobium inoculated treatments. All the parameters of growth and yield showed best result for application of lime and cow manure with synthetic Rhizobium inoculation of seeds. Cow manure has significantlyincreased the yield of peanut in the next crops. The results from our two crops of study showed that co-application of NPK, cow manure, lime and Rhizobium inoculation always increased field capacity in both crops.

Assessing the impact of climate change on agriculture in Quang Nam Province, Viet Nam using modeling approach

Purpose This study aims to evaluate the impact of climate change on some specific areas of agricultural production in Quang Nam Province, including assessing the possibility of losing agricultural land owing to sea level rise; assessing the impact on rice productivity; and, assessing the impact on crop water demand. Design/methodology/approach This study used the method of collecting and processing statistics data; method of analysis, comparison and evaluation; method of geographic information system; method of using mathematical model; and method of professional solution, to assess the impacts of climate change. Findings Evaluation results in Quang Nam Province show that, by the end of the 21st century, winter–spring rice productivity may decrease by 33%, while summer–autumn rice productivity may decrease by 49%. Under representative concentration pathway (RCP) 4.5 scenario, water demand increases by 31.1% compared to the baseline period, of which the winter–spring crop increases by 28.4%, and the summer–autumn crop increased by 34.3%. Under RCP 8.5 scenario, water demand increases by 54.1% compared to the baseline period, of which the winter–spring crop increases by 46.7%, and the summer–autumn crop increased by 63.1%. The area of agricultural land likely to be inundated by sea level rise at 50 cm is 418.32 ha, and at 80 cm, it is 637.07 ha. Originality/value To propose adaptation solution to avoid the impacts of climate change on agriculture, it is necessary to consider about the impact on losing land for agriculture, the impact on rice productivity, assess the impact on crop water demand and other. The result of this assessment is useful for policymakers for forming the agriculture development plan.

Growth and development of spring crops in competition with oat in the dryland Mediterranean climate of eastern Washington

Weed management during spring crop production in eastern Washington presents many challenges. Many spring crops are weak competitors with weeds. In May of 2010 and 2011, two spring crop trials were initiated near Pullman, WA, to compare the relative competitiveness of barley (Hordeum vulgare L.), wheat (Triticum aestivum L.), lentil (Lens culinaris Medik.), and pea (Pisum sativum L.) using cultivated oat (Avena sativa L.) as a surrogate for wild oat (Avena fatua L.) competition. The experiment was arranged as a split-block split-plot design with four replications. One set of main plots included three oat density treatments (0, 63, and 127 plants m−2), while a second set included each crop species. Crop species main plots were then split into subplots of two different seeding rates (recommended and doubled). Crop populations decreased as oat density increased and increased as crop seeding rate increased. As oat density increased, preharvest crop biomass decreased for all crops, while oat biomass and yield increased. Oat biomass and yield were greater in legume plots compared with cereal plots. Increasing oat density decreased yields for all crops, whereas doubling crop seeding rate increased yields for barley and wheat in 2010 and barley in 2011. Compared with legumes, cereals were taller, produced more biomass, and were more competitive with oat.

Selectivity of Post-emergence Herbicides for the Chickpea

Few herbicide options are available for controlling post-emergence weeds in the chickpea. The aim of this work therefore, was to study the selectivity of herbicides applied post-emergence for the chickpea ‘BRS Aleppo’. Two experiments were carried out, one in the greenhouse and the other in the field (winter-spring crop). A completely randomised experimental design was used for the screening experiment (greenhouse), with 15 treatments and four replications. Fourteen treatments with herbicides (g a.i. ha-1) were evaluated: bentazon (360 and 720), chlorimuron (10 and 20), clethodim (54 and 108), fluazifop (94 and 188), fomesafen (125 and 250), haloxyfop (30 and 60) and lactofen (90 and 180), in addition to the control with no application. From this experiment, herbicides that did not impair growth in the chickpea were selected for the field experiment based on plant height and shoot dry matter. During the field stage, a randomised block design was used, with 11 treatments and three replications. Ten treatments including the herbicides clethodim, fluazifop, fomesafen, haloxyfop and lactofen were evaluated in two rates, in addition to the control with no application. Based on the results of the two experiments, it was concluded that the ACCase inhibitors (clethodim, fluazifop and haloxyfop) caused no lesions or damage to the chickpea, while the latifolicides (fomesafen and lactofen) caused visual lesions which did not result in significant loss in yield. Bentazon (360 and 720 g a.i. ha-1) and chlorimuron-ethyl (10 and 20 a.i. g ha-1) were not selective, causing severe damage to the chickpea plants.

ECONOMIC PERFORMANCE OF RICE PRODUCTION TOWARDS VIETGAP IN PHONG BINH, PHONG DIEN, THUA THIEN HUE

This study assesses the economic efficiency of rice production of households towards VietGAP in Phong Binh, Phong Dien, Thua Thien Hue. The authors use semi-structured questionnaires to survey 90 rice households (45 households towards VietGAP and 45 conventional households) and hold a focus group discussion to accumulate the data. The results show that households practising VietGAP use only seeds, phosphate, NPK fertilizers as guided by the agricultural co-operatives. In the Winter-Spring crop 2017–2018, these households produce about 6.67 t/ha. The rice production profit of the VietGAP mode is relatively low, about 14,079,320 VND/ha, which is 948,200 VND/ha higher than that of the conventional mode. The profit-cost ratio of rice production with VietGAP is not significantly higher than that with conventional rice production.Keywords: economic efficiency, rice household, VietGAP, conventional rice production

Research of oil polluted soil and vegetation cover grown in laboratory by hyperspectral remote sensing method using the ASD FieldSpec 3FR Spectroradiometer

The development of oil extraction and refining industry causes the environment pollution primarily the aquatic and terrestrial ecosystems. The vegetation and soils as the components of terrestrial ecosystems expose to oil pollution especially. The research of oil-polluted soil and vegetation cover grown in laboratory by hyperspectral remote sensing method using the ASD FieldSpec® 3FR spectroradiometer is performed. The vegetation cover of spring cereals (wheat, barley, and corn) is formed by the growing in the containers with soil. The hyperspectral vegetation indices together with the reflectance in the red edge of spectrum (ТСІ, GrNDVI and REP) are the higher values for corn cover in comparison with the different spring small grain cereals. The additional dose of oil applied in the polluted soils from the Staryi Sambir oil deposit induces the reduction in the values of above-mentioned vegetation indices for the every spring crop of interest. The research of oil-polluted soil and vegetation cover grown in laboratory by hyperspectral remote sensing method using the ASD FieldSpec 3FR spectroradiometer is performed. The vegetation cover of spring cereals (wheat, barley, and corn) is formed by the growing in the containers with the different soils. The hyperspectral vegetation indices together with the reflectance in the red edge of spectrum (ТСІ, GrNDVI and REP) are the higher values for corn cover in comparison with the different spring small grain cereals. The additional dose of oil applied in the polluted soils from the Staryi Sambir oil deposit induces the reduction in the values of above-mentioned vegetation indices for the every spring crop of interest. Accumulated GrNDVI values for the corn and TCI for the corn and spring barley are similar to the laboratory chlorophyll content in these crops (according to the ratio of cultivation substrates). The further remote study of oil polluted soils and their influence on vegetation demands to improve the spectral measurements using satellite image data.