Hassan Akhgari; Behzad Kaviani
Abstract
An experiment as factorial with completely randomized block design with four replications during two continuous years (2019-2020) was carried out in order to evaluate the efficiency of rice (Oryza sativa L.) by seed tape technology and its comparison with transplanting and traditional direct seeding ...
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An experiment as factorial with completely randomized block design with four replications during two continuous years (2019-2020) was carried out in order to evaluate the efficiency of rice (Oryza sativa L.) by seed tape technology and its comparison with transplanting and traditional direct seeding cultivations. The first factor consisted of two rice cultivars (Khazar and Hashemi) and the second one consisted of ten levels of seed priming treatment with three methods (transplanting, traditional direct and direct with seed tape technology). The two main challenges of rice production in traditional transplanting and direct seeded methods are the high share of labor and the increased cost. Therefore, new methods of cultivation should be sought to reduce the cost of rice production. In the present study, direct seeded of rice with seed priming treatments and seed tape technology, with reduction of labor and cost is presented. Agronomy parameters and cost production factors were evaluated in these three methods. The results showed that the use of direct seeded method with seed tape technology increased rice yield by eight percent and saved 25 percent in cost, as well as a 11 percent reduction during the growing period, 30 percent in the number of labor per hectare, 26 percent in the production cost per kilogram of white rice and 2.2 percent in the cost-benefit index in Hashemi cultivar compared to the cultivation method. Therefore, direct seeded with seed tape technology, done for the first time in Iran, is effective in reducing the cost of rice production.
moslem heydari; seyed mohsen mousavi nik; nooshin mir
Abstract
Excessive use of chemical fertilizers has caused contamination of soil as well as surface and groundwater resources. For this purpose, an experiment has been conducted to investigate the possibility of reducing surface water pollution with nitrate and also the effect of nitrogen on quantitative and qualitative ...
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Excessive use of chemical fertilizers has caused contamination of soil as well as surface and groundwater resources. For this purpose, an experiment has been conducted to investigate the possibility of reducing surface water pollution with nitrate and also the effect of nitrogen on quantitative and qualitative characteristics of beans as a factorial based on completely randomized design (CRD) with four replications in Hamadan Agricultural and Natural Resources Research Center between 2013 and 2014. The first factor includes four types of nitrogen fertilizers, X1 (zeolite - EN), X2 (zeolite - AcAcEN), X3 (zeolite - HED), X4 (urea fertilizer), and X0 (control sample - no fertilizer use) and the second one involves two bean species, namely red beans (Phaseolus vulgarize L.) of Derakhshan cultivar and genotype 29005 of Cowpea (Vigna unguiculata L.). Applying functionalized zeolite nanofertilizers reduces nitrate leaching from the experimental units (pots). Meanwhile, zeolite X3 fertilizer is capable of reducing nitrate leaching by 48% in comparison with urea fertilizer. The amount of soil nitrogen in pots, containing X3 fertilizer, is 0.115 ppm and, compared to the urea fertilizer treatment, it improves this element’s maintenance in the soil by 30%. Accordingly, X3 fertilizer increases chlorophyll, protein, and grain yield by 44%, 64%, and 56%, respectively, in comparison with the control. In general, the application of functionalized nano zeolites has a beneficial role in reducing nitrate leaching and improving the quantitative and qualitative characteristics of bean plants.
Seyed Hamidreza Ramazani
Abstract
In order to evaluate the effects of intercropping on some morphological, yield, and yield components traits of different Triticale cultivars, an experiment has been conducted, based on a randomized complete block design in three replication during the 2018-2019 growing season in the research farms of ...
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In order to evaluate the effects of intercropping on some morphological, yield, and yield components traits of different Triticale cultivars, an experiment has been conducted, based on a randomized complete block design in three replication during the 2018-2019 growing season in the research farms of Faculty of Agriculture of Sarayan. The experimental treatments are consisted of 12 patterns of monocrop and intercropping of Pajh, Sanabad, and Jualinoo cultivars (100% Pajh, 100% Jualinoo, 100% Sanabad, 50% Pajh + 50% Sanabad, 50% Jualinoo+50% Jualinoo, 33% Pajh+ 33% Jualinoo+33% sanabad, 70% Pajh + 30% Sanabad, 30% Pajh + 70% Sanabad, 70% Jualinoo+30% Sanabad, 30% Jualinoo+70% Sanabad, 70% Pajh + 30% Jualinoo, and 30% Pajh + 70% Jualinoo). Results show that the highest plant height and straw yield have been obtained under the monocropping of Sanabad cultivar with the highest values of spike length, number of grain per spike, number of spike per square meter, number of grain per plant, 1000 grains weight, grain yield, and harvest index belonging to the monocrop pattern of Pajh cultivar and intercropping of 70% Pajh+ 30% Jualinoo treatments. Furthermore, the highest biological yield and content of leaf chlorophyll have been achieved under 30% Pajh + Sanabad 70% and Pajh 70% + Jualinoo 30% treatments, respectively. Results also show that the highest LER has been calculated under the application of intercropping of 70% Pajh + 30% Sanabad, Pajh 30% + 70% Sanabad, and Pajh 70% + Jualinoo 30%, compared with other treatments. In general, concerning the obtained results of the present study and the highest LER in Pajh 70% + Jualinoo 30%, it is concluded that the aforementioned intercropping can be used instead of monocrop of different triticale cultivars.