Wednesday, June 16, 2010

Here are some pics, tables and graphs from my report :)

A side, then arial view of Batch 1 (from left to right is underwatered to overwatered)


2nd Batch

Individual Effects- brown new growth wrinkled up, die back and wilting

A close up of the undeveloped radish bulbs on the overwatered plant 1st batch (the red things)

Table 1 Plant Heights


Graph 1 Plant Heights


Visual Observations at the end


*and a quick note- last time i accidently kept referring to the growing radishes as bolts- well the correct term for them is bulbs. bolt is the name given to an undeveloped radish bulb that will never finish growing. Thats what mine were due to SEVERE over crowding in the 1st batch and too much rain water in the 2nd batch

** and a not so quick not just giving a run down on my prac report:
my final title: Effects of Water Quantity on Plant Health and Growth
my final aim: to investigate the effects of of water on a plants growth and health
hypothesis: as the amount of water a plant receives increases, the plants growth and health increase as well
discussion: where to improve: next time larger pots. turns out your ment to grow radishes at least 1-2 inches apart from each other to avoid bolting like mine did =/ so that was a MAJOR problem becuase the experiment kind of turned out a dud- but at least there are still things to take away from it and ive got results
and also something HORRIBLE which i didnt realsie till yesterday. so i didn't conduct a fair test. :( after going to so much trouble to make sure i could control as many little variables as possible i made a huuugggeee mistake: when i repeated the test remember how i said this time ive only planted 18 seeds instead of dividing the packet by 3 like the 1st time to advoid overcrowding again? well thats not keeping it controlled and fair- its changing the experiment! :'( and i didnt realise i did anything wrong till yesterday when its allll over!! so upset :( haha im hoping that maybe because i can see that ive made this mistake and have identified and said how it should be corrected that maybe i wont be penalised as bad? can always hope =/
and finally conclusion: from this experiment i have concluded that yes the amount of water a plant receives does make a difference to its health and growth hence the problem of over and under watering and that it is not neccessarily true that the more water a plant receives the better and faster it will grow and more healthy it will be. In fact, i found the ideal amount of water is 1/2 the volume of the pot plant e.g. 50 ml of water for a 100 ml plant. well this is all covered in my report but felt that i should put it up here as wel *sigh* just creating extra work for myself now aren't i?- i'd rather see it as thats how committed i am to my blog :) haha

so until next time
good bye everyone, its been a good time
Steph
xx

Wow last blog

wow so its all over :O i don't know what to say but ill give it a go anyway haha
so ive learnt A LOT from this. it really has been a great learning experience, its forced me to be more active in 'the scientific community' and promoted independence. I feel so senior doing it haha its the begining of a possibley loong road if i do science next yr :) so the experiment has required me to be responsible, efficient and keep on top of my work. It has required a lot of research and learning new ways- like referencing- ive never done in-text referencing before. I know a lot more about plants and this knowledge will forever be helpful when i have my own house and garden to look after. Since it is my last blog i will upload my last pictures of how the experiment finished up and all my tables and graphs.
The last group ended today and the results are in the table. thanks for standing by guys.
Good bye and signing out (well after the pictures are up)
Steph

Monday, June 14, 2010

All most done

so im half way through my report so far which is good :) but ill have to keep working right up till the last day because my 2nd batch of plants wont be finished till 2 days before. Each has gone for 25 days.
so the 1st batch is all done and thye kind of failed!!
the finishing heights were:
9cm for the overwatered
10 cm for the normal
and 0cm for the underwatered-it still has the same length stems but no longer has any height at all
for my report i've chosen to only include plant heights as this is what indicates how healthy a plant is as an unhealthy plant can't support itself so will droop losing height. The length of stems isn't as relevant as the underwatered plant still has the longest stem length but no height as it is almost dead. so obviously, stem length doesn't indicate health as accurately.
Also Mr FlowerPower Guy told me that my radishes should be ready to harvest within 20-22 days. So why have i left mine in 25 days you may wonder??? well to me they definitely did not look ready. I could not see the red tops/tips of anything growing beneath the surface so i decided to leave them 3 more days. Yesterday i up rooted some of them and guess what?! NO radishes!!!! none at all. but this can be accounted for: 1stly i had too many seeds in the one pot which ment overcrowding and not enough room for the radishes to develop. woops. 2nd. radishes need 'well drained' soil so obviously they don't want too much water. unfortunately we received record amounts of rain over the past 25 days and that got to all the plants. So this added onto the daily watering also stunted radish development. However you can see the start of radishes growing on the roots. When i uprooted them each plant had a different amount and whilst not fully developed radishes, like they should have definitely been at this point in time, there was still something to show for all of this. The results were:
the average watered plant:
the developing radishes (also known as bolts) on this plant were the largest and highest quantity.
the overwatered plant came next: it had a fair few bolts growing but not quite as many as the normal plant. they were slightly smaller in size too.
the underwatered plant had the least bolts. Very few actually and they were pretty small in size. Not all the roots/ seedlings had produced a bolt unlike the other 2 plants where majority had.
so that is that for my first try at the experiment. over all the results/ trends are as follows:
initially the more water the better as it gives it a good head start but after the 1st few days the amount of water should be reduced to an average amount so that it only seeps out of the botom slightly. however by day 7 less is more and the plant grws best with little water. However the underwatered plan startsdieing as the experiment continues (this happened around day 16 but due to rain it recovered and returned to its healthier state. It didnt start drooping then until the 23rd day where it had a drastic drop). The normally watered plant prevailed to be the healthiest and tallest. So all in all it is better to give your radishes a moderate amount of water as although they may be slightly behind at first, that amount of water will keep the plant going strong and at the end it will be the best one standing where the underwaterd plant dies off and the overwatered plant drop off.

As for the 2nd batch of plants they're still going strong.
the overwatered plant has grown to 10 cm and the normally watered one to 10.5 cm. the underwatered plant reached 9.5 cm but over the past 3 days has slowly been drooping and decreasing in height. it currently stands at 9 cm and is now the shortest plant. it started decreasing 3 days after the 1st underwatered plant did and is decreasing at amore steady rate.

i will upload a graph to show how the 2 runs of the experiment compare so far and this will look similar to the graph i use in my report (i'll just need to wiat for the 2nd lot to finish 1st though). I'll also upload pictures of how the plants looked by the end and the pictures of the bolts as well as a table comparing the bolts and how the plant looks visually health wise.

for my discussion i have many errors to discuss- the human errors include not thining the plants out and crowding them. the fact that i i could only be as accurate as my ruler would allow (to the nearest mm) is alimit of reading error and the systematic errors which i could not help include: general individual variation in the seeds affecting individual plant growth, the rain which disrupted my experiment majorly, the fact that i could not maintain a consistent amount of sunlight every day and same for temperature and wind- at least all 3 plants were sunject to equal amounts of each of those variables.
thats all for now, ill be back later to upload pictures :) bye!

Wednesday, June 9, 2010


so this was taken on the 5th and shows how the plant is starting to fan out and grow towards the edges.


this is a picture of the 1st batch of plants. the underwatered plant(up the top) shows how it is drooping and almost dead.


This is a close up of the underwatered plant. Note how it is drooping completely over the edge of the pot as it can not support itself anymore as it has been starved of nutrients due to lack of water.


This is a close up of the overwatered plant trying to show all the dieback. Once again it is not very clear in picture but i have circled where it is prehaps easiest to see it. The black there is not soil or shadow but the dieback occuring on the leaves.


This is an arial shot of the 2nd batch. I forgot to mention in my information post that even though the plants look healthy there are black dots occuring on the underside of some of the underwatered leaves. They ar only small but are increasing in amount. Ther are also a few black dots on some of the stems of the underwatered plant. =/ hmm haha i'll have to research what this means. Also important!!! in this experiment the overwatered plant is on the left. so from left to right it goes overwater, normal, underwatered. this is opposite to the other experiment as i put them behind there equivalent (i.e. the overwatered 2nd plant is behind the 1st overwatered plant). they are all receiving equal amount of sunlight and exposure to the wind though.


And this is a clos eup of the underwatered plant in the 2nd bunch to give you an idea of how they are growing

More Measurements

ok so ill go straight into the measurements:
5th:
All the plants remained the same height except for the overwatered plant in the 2nd batch which gre 1/2 a cm so now its 8.5 cm tall :)
the underwatered plant in the first batch is starting to spread out, as in instead of growing all together the stems are starting to fan out to the sides of the pot (i'll include a piture in my next pot). The leaves of the overwatered plant are also starting to get smaller by becoming more shrivelled.

6th June:
the first batch has remained the same height and there is little change except for the 2 things mentioned above. In the 2nd bunch however, the:
underwatered plant has grown to 9.5 cm
the normal has remained 9.5 cm
and the overwatered has also grown to 9cm

7th June:
the underwatered plant of the 1st batch is starting to die!!!! it is drooping quite a lot and the leaves are scrunching up! The over watered and normal plant are also producing some die back- especially the overwatered one.the heights are:
overwatered: 8.5 cm
normal: 9.5 cm
underwatered: 5 cm!! this is because its drooping over because it can not support itself as it is not getting the essential nutrients to stay healthy due to lack of water.

The 2nd batch have all remained the same :)

8th June:
the underwatered plant is definitely suffering. It is now completely drooping and can't support itself at all. The length of the plant has still remained at 10 cm (you will notice the height of this palnt over the past few days has ranged between 9.5 and 10 cm- this is most [robab;y a precision error because even though i feel im being as accurate as i can and am out there measuring the one plant for quite a few minutes too make sure i have the right height, i doubt that a plant grows and shrinks .5 cm each day haha.)
the overwatered: 8.5cm
the normal: 9.5 cm
the underwatered plants HEIGHT is now 2 cm
the overwatered plant has a lot of dieback especially in the middle towards the back. Most of these leaves are 3/4 black and scrunched up.

the 2nd batch has all remained the same height :)
that is all for now with measurements but im going to upload all my pictures now!

Saturday, June 5, 2010

Still here! p.s. rain is not my friend -_-

hey so i decided to break this post up because otherwise it would be to longer with the pictures i uploaded below.
So here are the heights for the plants:
3rd June
1st batch-
Overwatered: 8cm
Normal:9.5 cm
Underwatered: 9 cm

2nd batch-
Overwatered: 7.5 cm
Normal: 9.5 cm
Underwatered: 9 cm

the overwatered plant was looking very deathly that day. it's leaves were scrunching and it had lost its colour. the underwatered plant has returned to normal because of reasons i will rant about below. the normal watered plant has the most die back at this stage (its only at the back)- leaves are turning brown and being wilted away. The overwatered plant has the 2nd most die back.
4th June:
1st batch-
Overwatered: 8.5 cm
Normal: 9.5 cm
Underwatered: 10 cm

2nd Batch-
Overwatered: 8 cm
Normal: 9.5 cm
Underwatered: 9 cm

RANT!!!!!!!!!!!!!!! OMG!!!!!!! i hate the rain!!!!! because of the TERRENTIAL rain my plants (which are undercover but still! being affected) have been subject to more water than my otherwise controlled experiment would have them receiving. however this time the results will not 'maybe change' they definitely will! because my underwatered plant which i was finally seeing the effects of underwatering take place on (loss of vibrant green colour, drooping, scrunched up leaves etc) HAS RETURNED TO NORMAL!!!! the rain has provided it enough water to return to a healthy state completely stuffing up my results. i am increadibly fustrated because the rain has completely stuffed up my results and i do not have time to start again and the rain is an uncontrollable factor and does not look like it is going away anytime soon. HMPH! not happy :( so as of the 4th of june the underwatered plant has returned to normal health and started growing more!!! (where it had stopped and was starting to droop before). the overwatered plant is also getting more dieback as it is definitely receiving too much water. its probably got the most die back and is not only at the back but on the sides as well

thats all for now :)bye!

Photo opportunity!!!!!!!

Pictures of the 1st and 2nd batch of plants respectively- on the pictures turned on their side the top plant is the underwatered one (the one usually on the left) and the individual shot is of the overwatered plant in the 2nd batch just to give an idea of what it looks like up close.











These 2 pictures are of the die back (which i'll go into further detail about next post (In a few minutes)). this has been taken on the overwatered plant of th 1st batch its hard to see it in the picture even in my close up but its pretty clear in real life.