Уточнить поиск
Результаты 1-10 из 447
Study on the high yield physiology base and cultural techniques for ¡?-You 7 Hao, a new hybrid mid-season rice with high yield and good quality
2001
Zhu Yongchuan | Kuang Haochi | Xu Fuxian(Sichuan Academy of Agricultural Sciences, Luzhou (China), Inst. of Rice and Sorghum)
Effect of N application for bud development at different days after full heading of main crop on the ratooning ability in hybrid mid-rice
2001
Xu Fuxian | Xiong Hong | Hong Song(Sichuan Academy of Agricultural Sci., Luzhou (China) Rice and Sorghum Institute)
Preliminary study of somatic tissue culture of rice cultivar "Zaohui 402"
2001
Li Yonghong | He Guanghua | Xie Rong(Sichuan Academy of Agricultural Sci., Luzhou (China), Rice and Sorghum Institute)
Sink-source characteristics of high-yielding combinations of hybrid mid-season rice
2001
Xu Fuxian | Zheng Jiakui | Zhu Yongchuan(Sichuan Academy of Agricultural Sci., Luzhou (China), Rice and Sorghum Institute)
Study on high yield physiology base and cultural techniques for II-You 7 Hao, a new hybrid mid-season rice with high yield and good quality
2001
Zhu Yongchuan | Kuang Haochi | Xu Fuxian(Sichuan Academy of Agricultural Sci, Luzhou (China), Rice and Sorghum Institute)
Development and prospects of rice breeding for resistance to blast in Sichuan province
2001
Huang Fu | Cheng Kailu | Luo Qingming(Sichuan Academy of Agricultural Sciences, Luzhou (China) Rice and Sorghum Research Institute)
[Corn cleaner DSP-8]
2001
Balaban, N. | Raikov, V.
Some insecticidal plant extracts for controlling maize weevil, Sitophilus zeamais Motschulsky (Coleoptera : Curculionidae)
2001
Somnuk Wongtong(Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Entomology) | Sangkhae Nawanich(Kasetsart Univ., Bangkok (Thailand). Inseechandrasatitya Institute for Crop Research and Development. National Corn and Sorghum Research Center)
Toxicity of crude extracts from three selected plants namely Waan-nam (Acorus calamus L.), Noi-naa (Annona squamosa L.) and Lian (Melia azedarach L.) was investigated under laboratory conditions of 27+- 3 deg C and 80 +- 20 percent RH. By the use of dry film method, for the toxicity test, the result revealed that crude extract from Waan-nam was more toxic to maize weevil than crude extract from Noi-naa seed. Due to low toxicity of Lian to maize weevil, thus, it was dropped out from further investigation. The efficacy and long-term residual effect of crude extracts from Waan-nam root and Noi-naa seed were also studied. Crude extracts of both plants were treated to maize seeds and the number of dead and alive maize weevils were counted. The results indicated that crude extract from Waan-nam root at the concentration of 10 percent (w/v) effectively control the number of maize weevil and its F1 for 120 days after treated (DAT). Additionally, the same results on the control of maize weevil were obtained from crude extract of Noi-naa seed at the concentrations of 5 and 10 percent (w/v) whereas the concentration of 2.5 percent (w/v) could control the number of maize weevil for 90 DAT. Moreover, all concentrations of crude extract from Noi-naa seed could effectively control the number of F1 maize weevil for 120 DAT. The effects of crude extracts from Waan-nam root and Noi-naa seed, on maized seed germination were also evaluated. The between-paper method was employed for germination test. It was found that maize seeds treated with crude extract from Waan-nam root almost completely lost their germination percentage while seed germination was high up to 90 DAT when treated with crude extract from Noi-naa seed at 2.5 percent (w/v) concentration.
Показать больше [+] Меньше [-]Corn ear-warm as dangerous pest of potato family
2001
Botnari, V.
