Effect of different cropping conditions, depth of burial, age of seeds, and allelopathic effect of different crops on the germi-nation behavior of little seed canary grass (Phalaris minor Retz.) seeds
Sivapuram Venkata Rama Krishna Prabhakar
sivapuram.prabhakar@gmail.comInstitute for Global Environmental Strategies, Hayama, Japan. (India)
N. T. Yaduraju
International Crop Research Institute for the Semi-Arid Tropics, Hyderabad, Andhra Pradesh. (India)
Malavika Dadlani
Indian Agricultural Research Institute, New Delhi, India. (India)
M. Gopal
Indian Agricultural Research Institute, New Delhi, India. (India)
Abstrakt
Pot culture experiments were conducted to find out the effect of different cropping conditions, depth of burial and age of seeds on the survival of little seed canary grass (Phalaris minor Retz.) seeds. The results indicated that the soil temperature modifications through the flooding or filed capacity moisture status of the soil influenced the germination and viability of the buried weed seeds rather than the crops per se. It was observed that the seeds lost their viability because of the anaerobic conditions and high temperatures and through increased membrane permeability of the seeds. The P. minor Retz. seeds were found to be sensitive to anaerobic conditions. The longevity of seeds buried in rice-wheat system and Flooding-wheat system was found low when compared to those buried under soybean-wheat and field capacity-wheat conditions. The in situ effect of rainy season (kharif) crops was found to confine to influencing the initial germination (vigor) of the little seed canary grass with cowpea, groundnut, soybean and sunflower inhibiting the initial germination of little seed canary grass. This inhibition was absent at the end of germination counts taken after twenty days after keeping for germination. The residual effect of cowpea, rice, soybean and sunflower was observed. The application of pearl millet and rice residues has considerably reduced the little seed canary grass germination, plant height, seedling fresh weight and leaf area at thirty days after sowing.
Słowa kluczowe:
allelopathic effect, anaerobic conditions, crop residues, depth of burial, germination, membrane permeability, rice-wheat cropping systemAutorzy
Sivapuram Venkata Rama Krishna Prabhakarsivapuram.prabhakar@gmail.com
Institute for Global Environmental Strategies, Hayama, Japan. India
Autorzy
N. T. YadurajuInternational Crop Research Institute for the Semi-Arid Tropics, Hyderabad, Andhra Pradesh. India
Autorzy
Malavika DadlaniIndian Agricultural Research Institute, New Delhi, India. India
Autorzy
M. GopalIndian Agricultural Research Institute, New Delhi, India. India
Statystyki
Abstract views: 87PDF downloads: 30
Licencja
Wszystkie artykuły publikowane w formie elektronicznej na mocy licencji CC BY-SA 4.0, w otwartym dostępie (open access), pełna treść licencji jest dostępna pod adresem: https://creativecommons.org/licenses/by-sa/4.0/legalcode.pl .