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Results of 2007 Crop Nutrient Deficiency Photo Contest

On this page, we highlight winners for each of the four categories. The entries were judged on the overall quality of the image as well as the supporting data provided by entrants.

Nitrogen
    First Place
Nitrogen deficiency in tobacco.
Adriana Elina Ortega of Salta, Argentina, took this shot showing N deficiency in tobacco under no-till cultivation and mulch. Plants had a light green appearance and a definite yellowing of older leaves. Fully developed leaves had 1.79% N total and cured leaves had 1.18% N total.








    Second Place


N deficient corn
submitted by S. Srinivasan
Tamil Nadu, India
    Third Place


N deficient corn
submitted by Ryan Stoffregen
Illinois, U.S.A.)






Phosphorus

First Place
Phosphorus deficiency in canola.
Lyle Cowell of Saskatchewan, Canada, noticed this unintended ‘test strip’ in a canola crop that was directseeded into alfalfa stubble. The previous alfalfa crop depleted soil P and, in this case, the farmer ran out of seed-row P fertilizer on the last pass during seeding, causing slow and stunted growth.







    Second Place


P deficient corn
submitted by Nathan Slaton
Arkansas, U.S.A.
    Third Place


P deficient corn
submitted by Mr. Syafruddin
South Sulawesi, Indonesia.


Potassium

First Place
Potassium deficiency in soybean.
Colin Massey of Arkansas, U.S.A., captured this image of K deficiency in bermudagrass. The crop received no K over a 2-year period. Mean soil test K in 2007 was 82 ppm. Tissue K concentration in 2007 ranged from 0.57% to 1.03% across four harvests. Averaged across harvests, total biomass with no K fertilizer was 59% of yields produced with 560 kg K20/ha applied over the four harvests.

    Second Place


K deficient soybean
submitted by Li Yuying
Heilongjiang, China
    Third Place


K deficient soybean
submitted by Nathan Slaton
Arkansas, U.S.A.



Other

First Place
Born deficiency in coconut palm.
P. Jeyakumar of Tamil Nadu, India, took this close-up photo showing B deficiency in a 14-year old coconut palm. The deficiency was confirmed with symptoms such as early shedding of buttons (female flowers), resulting in poor fruit set, plus small and unevenly opened leaves. The developed nuts were also small and malformed. The soil test revealed that B content was very low (less than 0.3 mg/kg). Leaf tissue analysis also registered a lower value of 14 mg/kg.

    Second Place


Ca deficient banana
submitted by Luis Estrada
Guatemala
    Third Place


Fe deficient oilpalm
submitted by Nolver Arias
Santander, Colombia





Here are some of the other excellent entries that were received.

Nitrogen



N deficient corn


N deficient corn


N deficient oil palm


N deficient pasture


N deficient rice


Phosphorus




P deficient banana


P deficient corn


P deficient corn


P deficient corn


P deficient tomato


Potassium



K deficient barley


K deficient corn


K deficient oilpalm


K deficient rice


K deficient sugarbeet

Other Nutrients: B, Mg, Zn, Ca



B deficient canola


B deficient soybean


Ca deficient corn


Ca deficient sugarbeet


Fe deficient banana


Fe deficient cashew


Mg deficient corn


S deficient corn


Zn deficient corn


Zn deficient rice


Zn deficient rice


Additional Resources:

2006 Photo Contest Winners


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