Archive for April, 2007

Day # 59 view of a Pima cotton root

April 30, 2007

A Pima cotton plant was knocked of the table by someone in our family learning to use crutches. Watching a Pima do a 2-1/2 gainer has to be seen to be appreciated. The below photo will have to suffice.



This is an unintended opportunity to see what is happening below the soil. There were several dozen root hairs left in the soil, an inch of the tap root was severed from the plant.



The plants are kept moist, not wet. The mess was vacuumed up leaving no stain.


Day #58, Upland cotton trichome appears

April 29, 2007

Photo of an Upland cotton plant’s fifth true leaf shows the beginning of trichome. The “fuzz” can best be seen along the leaf’s margin, and to a lesser extent reflected along the lower half of the leaf. There is also some hair-like growth above this leaf’s node.


Day #52, cotton plant leaves

April 23, 2007


The largest Pima and Upland plants now both have four well developed true leaves.P

Pima cotton plant’s four larger leaves have changed shape from first node to the most recent. No cotyledons on this plant.


Pima leaf #3 on left, leaf #4 on right




Photos of the Upland cotton plant’s larger leaves. The cotyledons have not yet fallen from this plant.




Both small Pima and Turquoise cotton plants photographed in the previous post died. The Turquoise plant did not have much of a root system.


Day# 44, a look at extreme plant sizes

April 15, 2007

An example of the extreme size difference among Pima cotton plants.


This is the small Pima from above photo set. The cotyledons ragged state is fairly common among all species. The first true leaf can be seen in the center of the photo pointing at about 1:00 o’clock, and the second is pointing at about 4:00 o’clock.


The Upland cotton plants also have a range of sizes. The small one has one set of several true leaves developing on the right side, the left side foliage is a cotyledon.


Below is a view of the larger Upland’s cotyledon node, something is starting to develop at this point on both sides of the stem at this point. growth on the stem’s right side is visible.


In the last post, a mention was made about mosaic on the Upland cotton leaves. This photo shows a new leaf, and one afflicted to the right. The new leaf does not show any sign of this impairment, nor do any of the newer leaves of this species.


The Upland’s leaf shape is starting to become more defined.


The Turquoise-dyed cotton seed’s second true leaf withered this week, and the first true leaf does not look healthy. The stem appears sound.


Several details of my project have not been explained. Hopefully, this will fill in some blanks. Said undertaking is being attempted at the north end of the Willamette Valley in Beaverton. A frost can be expected through the second week in May, Day# 72 of this undertaking. These plants are living in an east-facing window, they are also sharing space with tomato, basil, and dill starts. There is a lot of competition for limited light. The sever-day weather forecast is being carefully watched. By moving outside, the plants would be getting more sunlight, and cooler weather. These plant will eventually be put into 10+” pots, the large ones that can be found at Dollar Tree. There are several reasons for keeping the cotton plants in pots. Cotton is a perennial. Based on my on-line reading, a commercial cotton plant is about 30-36” high, approximately the size of an average tomato plant,. The catch is that a cotton plant this size can easily have a tap root 10-12 feet deep. Our frost line is about 15-18”, so there is a chance this plant could reemerge, and perhaps spread, the spreading part is my hunch, nothing to back this thought. A pot of colocasia bulbs were left out last winter, and most were in fine shape this spring. If a tropical plant’s bulb can survive an Oregon winter, the same may be true for a cotton plant.

Thank you all for your visits to Oregoncotton. Please remember I have never grown cotton, and my educational background and work experience is not related to agriculture.

day# 37, first crop count

April 8, 2007

Initally, Eight Pima cotton seeds, sixteen Upland seeds, and one unknown species (Turquoise seed), were started. As of today, six Pima, eight Upland and 1 Turquoise plant have sprouted and are doing well. Three of healthy seeds soaked prior to planting were sacrificed to view what was inside the seed casing, one died last week. Soil of the remaining six plants were examined today in hopes of discovering what happened to the seeds that did not develop.

Photos of the only plant that died after emerging, as mentioned in the April 1 post.


One of the immature Pima seed was located, The seed was intentionally broken open, and the contents immediately changed color from off-white to a pistachio-green. My apologies that this photo does not more accurately capture the observed color


One complete Upland, with what appears to be a dead cotyledon was encased in the soil. Why the tap root would develop in a vertical circle is a mystery to me.


In two other pots, what looked like healthy root segment were found. My digging may have broken the plants apart.

This photo show how the Pima leaves are starting to acquire a different shape than the first true leaves. The Upland leaf is more flat, while the Pima is taking on a 3D geometry, perhaps allowing more bound surface area than an Upland.


Several of the Upland cotton plants’ more mature leaves have what appears to be, for better terms, a leaf mosaic. “Leaf mosaic” seems to be a name used to describe tomato leaves with a certain problem, there is probably a more accurate term to depict a similar pattern on cotton leaves. The Pima and Turquoise cotton plants do not have this problem.


The plants might be starting to adjust to life as house plants. This Upland was put in a larger pot today, it looks a bit leggy to me compared to pictures of cotton plants conventionally cultivated. If one looks closely, the tap root can be seen extending into the Bearing Sea.


The Uplands are starting to develop some kind of secondary growth along opposite side of the the nodes, these might be stipules, not sure. This photo show two sets.


Cotyledons are starting to fall from the all the plants.

The Turquoise cotton seed is developing more slowly than the Pima and Upland plants. It now has two true leaves. They appear to have the Upland lobed geometry with a narrower length/width ratio. The first true leaf is starting to take on the 3D structure of the Pima leaves.


04-01, day #30

April 1, 2007

There is no descriptive title for this post. So, here is a recap of the past several days.

A photo of the Pima cotton plant’s first true leaf was posted four days ago. It has more than doubled length and width. Subject leaf is the one in top view. The smaller leaf at the base, of the first leaf is a second true leaf, about the same size as the first leaf four days past. Both of the first two leaves are similar in shape


The Upland Cotton plant’s second leaf is more lobed leaf shaped than the first true leaf. All of the upland cotton second leaves that have so far opened are some variation on this geometry, but not necessarily the same proportion of length and width.


The Turquoise cotton seed is more visible, and if one looks closely at the base of the first true leaf, a second leaf can be seen starting to form.


The first seedling-stage plant died, it was an Upland. Hopefully not a message of foreboding events on this most auspicious day.