SumaGrow demonstrated an increase in the number of saleable pumpkins produced as compared to the untreated control. The data presented in this study suggests that the larger number of saleable pumpkins from the SumaGrow treatment, as compared to the untreated check, was due more to an improvement in pumpkin quality than an increase in total pumpkins produced.
The quality factors affected were size, disease resistance, and maturity. SumaGrow appeared to specifically influence pumpkin maturity and also had fewer diseased pumpkins than the untreated check. SumaGrow treated plants had larger, darker green leaves than the untreated check.
The plant growth and yield response to the product was significant and should be of economic benefit to a grower.
Plant Growth: The plants in SumaGrow plots were similar in appearance to those of the untreated check until just prior to the start to the start of blossom formation. At that time it was observed that the leaves of the SumaGrow treated plants were becoming larger and darker green than the untreated check plants. By mid-way through fruity set, plants in the SumaGrow plots had larger and darker green leaves than the plants in the untreated check plots. The larger dark green leaves became very noticeable on the SumaGrow plants because they formed a very dense leaf canopy.
Fruit yield, quality, and disease: The saleable yield data indicates that the SumaGrow treatment produced more saleable pumpkins than the untreated check. There was also an effect on pumpkin size. There was an increase in the number of pumpkins in the 10-39 pound range as compared to the untreated check.
The number of green pumpkins is given in Table 2. SumaGrow treated plots produced fewer green pumpkins than the untreated control. The effect was most noticeable on pumpkins in the 10 to 39 pound range.
Table 3 shows the effect of SumaGrow on the disease of the pumpkin fruit. Disease is a significant economic factor. It reduces the number of saleable pumpkins and it affects shipping quality. Many of the pumpkins are shipped great distances. It is not uncommon for pumpkins to appear to be of sound quality upon shipment but arrive at their destination in un-saleable condition due to disease. SumaGrow treated plants had fewer total diseased pumpkins than the untreated control.
Table 4 shows the total number of pumpkins produced by each treatment. The data shows that the total number of pumpkins produced by the untreated control was slightly greater than the total number produced by the SumaGrow treatment. However, the untreated control treatment produced fewer saleable pumpkins. Total number of pumpkins produced is not an accurate measure of saleable pumpkins. In this particular study, the number of saleable pumpkins appears to influenced more by maturity and disease than total pumpkins produced.
The data suggests that the larger number of saleable pumpkins from the SumaGrow treatment was due more to an improvement in pumpkin quality than an increase in pumpkin numbers. The two primary quality factors were disease and immature pumpkins. SumaGrow resulted in fewer immature pumpkins than the untreated check and also exhibited some disease suppression as compared to the untreated check.
The SumaGrow treatment produced significantly more pounds of pumpkins than the untreated check. Table 6 shows the calculated value per acre of the pumpkins produced using the various treatments. At 30 cents per pound, the total SumaGrow value was $13,612, while the untreated crop’s value was $10,127, which is a $3,484 increase for SumaGrow!
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