Author: William GriffithPublisher:
ISBN:
Category :
Languages : en
Pages : 56
Book Description
On Azolla Salvinia
Author: William GriffithOn Azolla and Salvinia
Author: William GriffithStudies Concerning the Nutrition of Azolla and Salvinia
Author: Edward Francis MangelsdorfPublisher:
ISBN:
Category : Plants
Languages : en
Pages : 15
Book Description
Isotopic Studies of Azolla and Nitrogen Fertilization of Rice
Author: K.S. KumarasinghePublisher: Springer Science & Business Media
ISBN: 9401116814
Category : Technology & Engineering
Languages : en
Pages : 156
Book Description
Nitrogen is the most limiting element for crop production. Traditionally, expensive commercial fertilizers are used to correct soil nitrogen deficiencies. Indeed, 50% of the increase in rice yields after World War II can be attributed to increased fertilizer nitrogen use. Although an increased rate of fertilizer nitrogen application has been advocated to meet the growing demand for food, it is unrealistic to advise the farmers to apply fertilizers they could hardly afford, and whose prices are likely to escalate in the years ahead. In addition, when they are not applied judiciously there are problems of environmental pollution as plants are capable of taking up only a relatively small portion of the applied nitrogen, a substantial amount being lost through various chemical and biological processes. The exploitation of cheaper alternatives or supplements to fertilizers have therefore gained much interest in recent years. Our increased interest in biological nitrogen fixation as a supplement or alternative to nitrogen fertilizers led to the convening of a consultants' meeting on `The Role of Isotopes in Studies on Nitrogen Fixation and Nitrogen Cycling by Blue-Green Algae and the Azolla-Anabaena azollae Association', in Vienna from 11--15 October 1982. The consultants' group recommended that the Joint FAI/IAEA Division of Nuclear Techniques in Food and Agriculture embark on a coordinated research programme in this field and that initial emphasis should be placed on Azolla-Anabaena symbiosis. As a result, such a programme was initiated in 1984, which was concluded in 1989. The results and conclusions reported here are those that were generated during the five years of its operation.
Aquatic Plant Competition Between Azolla Filiculoides and Salvinia Natans Using Three Design Methods
Author: Richard T. TuckerControl of Floating Aquatic Weeds Red Azolla, Salvinia and Water Lettuce
Author: George DiatloffPublisher:
ISBN:
Category : Aquatic weeds
Languages : en
Pages :
Book Description
Salvinia and Azolla in the Miocene of Poland
Author: Maria Łańcucka-ŚrodoniowaPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Salvinia and Azolla in the Miocene of Poland
Author: Worlds' Worst Weed (salvinia)
Author: Shahid A. AbbasiPublisher:
ISBN:
Category : Biogas
Languages : en
Pages : 256
Book Description
Distribution of Salvinia; depletion of water resources and hindrance to water use by Salvinia; Environmental impact of Salvinia; control of Salvinia; Utilisation of Salvinia; Anaerobic digestion; Feasibility studies on Salvinia for energy production; Effect of weed: Water ratio on bio-gas production from Salvinia; Effect of temperature On biogas production from aquatic fern Salvinia; Bio-energy potential of eight common aquatic weeds; Survivability and growth of Salvinia molesta (Mitchell) over water treated with heavy metals and subsequent utilisation of the harvested weeds for energy (Bio-mass) production; Use of aquatic weed Salvinia As full/ partial feed in commercial bio-gas disasters; Design and performance elevation of a fern shredder; Studies on multiphase Anaerobic digestion of aquatic weed Salvinia; Productivity (Net primary production) in natural waters.
Azolla Utilization
Author: Publisher: Int. Rice Res. Inst.
ISBN: 9711041790
Category : Technology & Engineering
Languages : en
Pages : 305
Book Description