1 / 25

Mineral Nutrients

K Potassium Potash. Mineral Nutrients. N Nitrate. P Phosphorus. Too much N. Stem grows too tall and thin and crop falls over Burns the roots. tomatoes. 0:1:2. 2:1:1. 1:2:1. 1:1:2. Fertilisers Organic Inorganic.

kaliska
Download Presentation

Mineral Nutrients

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. K Potassium Potash Mineral Nutrients N Nitrate P Phosphorus Too much N Stem grows too tall and thin and crop falls over Burns the roots

  2. tomatoes 0:1:2 2:1:1 1:2:1 1:1:2

  3. Fertilisers Organic Inorganic • adds humus and so improves crumb structure • contains large quantities of known amounts of nutrients • decays slowly so releases nutrients over a long time • cheap and easy to obtain • releases nutrients quickly • contains other nutrients needed by plants such as magnesium • easy to spread

  4. Anther Stigma Where the pollen lands Produces pollen (male gamete) Style Pollen travels down this Ovule Egg (female gamete) Sepal Protects the flower in bud Ovary Develops into the fruit

  5. Cross Pollination The transfer of pollen from the anther of one flower to the stigma of another flower of the same species This increases genetic variation so plants are able to adapt to their surroundings

  6. Self Pollination The transfer of pollen from the anther of one flower to the stigma of the same flower. Advantage Does not require another plant of the same species near by Disadvantage Little genetic variation in offspring

  7. Wind Pollinated Plants Feathery Stigma hanging outside the flower to increase surface area to catch pollen Anthers hanging outside the flower so wind will blow pollen away Lots of small, light pollen produced so it can be carried by the wind Flower small and green and not scented since it does not need to attract insects

  8. Insect Pollinated Plants Brightly coloured, scented flowers to attract insects Small quantities of large, sticky pollen is produced Nectar is produced Anthers and stigma inside flower in the best position for the insect

  9. A word of caution Make sure that there are insects or wind in glass houses and polytunnels

  10. Vegetative Reproduction • This is asexual • All offspring are genetically identical to the parents • Growers know what they will produce • If one plant gets a disease they will all get the disease

  11. Runners eg. Strawberry plants

  12. Rhizomes eg. Ginger

  13. Bulbs eg. onions

  14. Single Digging or Bastard Trenching • aerates the soil • removes weeds • improves drainage • FYM can be added to improve crumb structure • raked to produce a good tilth

  15. Clay Water Humus Sand Silt

  16. Cultivation By Machine Ploughing and harrowing

  17. Seed Germination Testa (Seed Coat) Plumule Tough, so water is needed to swell the seed and break the testa before the seed can germinate Young shoot Radicle Cotyledons (Food Store) Young root Glucose + Oxygen Energy Enzymes are needed for respiration therefore seeds only germinate in the warmth Light is not usually needed for germination except in certain seeds such as lettuce

  18. Raising Plants from Seed

  19. light sensors • temperature probes • carbon dioxide sensors • pH meters • humidity sensors

  20. Red Rose White Rose The allele for red flowers is dominant over the allele for white flowers

  21. Inheritance of Flower Colour Using A Punnet Square A red flowered plant was crossed with a white flowered plant. What is the ratio of phenotypes and genotypes in their offspring? R r R r Rr rr r b Rr rr r b Ratio of Genotypes: 1:1 Rr:rr 1:1 Red:White Ratio of Phenotypes:

  22. Risk Assessments DO NOT BE VAGUE

  23. Storing Crops Ripening Bruising Diseases Pests

More Related