International Plant Nutrition Institute - Results of 2007 Crop Nutrient Deficiency Photo Contest

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Results of 2007 Crop Nutrient Deficiency Photo Contest

Congratulations to the winners of the 2007 photo contest and sincere thanks to those who submitted entries. 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.

We encourage readers to look for opportunities to capture digital photos and document crop nutrient deficiencies and disorders in 2008. Also watch for details outlining the 2008 edition of the IPNI contest in the next issue of Better Crops with Plant Food and at the website.

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.

Hi resolution file (150 KB)

Second Place

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

Hi resolution file (268 KB)

Third Place

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

Hi resolution file (1.38 MB)

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.

Hi resolution file (685 KB)

Second Place

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

Hi resolution file (1.41 MB)

Third Place

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

Hi resolution file (1.53 MB)

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.

Hi resolution file (1.54 MB)

Second Place

K deficient soybean
submitted by Li Yuying
Heilongjiang, China

Hi resolution file (836 KB)

Third Place

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

Hi resolution file (2.12 MB)

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.

Hi resolution file ( Mb)

Second Place

Ca deficient banana
submitted by Luis Estrada
Guatemala

Hi resolution file ( 1.35 MB)

Third Place

Fe deficient oilpalm
submitted by Nolver Arias
Santander, Colombia

Hi resolution file (558 KB)

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

Nitrogen

N deficient corn Hi resolution file (471 KB)	N deficient corn Hi resolution file (262 KB)	N deficient oil palm Hi resolution file (980 KB)
N deficient pasture Hi resolution file (102 KB)	N deficient rice Hi resolution file (546 KB)

Phosphorus

P deficient banana Hi resolution file (118 KB)	P deficient corn Hi resolution file (1.2 MB)	P deficient corn Hi resolution file (1.72 MB)
P deficient corn Hi resolution file (3.56 MB)	P deficient tomato Hi resolution file (222 KB)

Potassium

K deficient barley Hi resolution file (199 KB)	K deficient corn Hi resolution file (718 KB)	K deficient oilpalm Hi resolution file (54 KB)
K deficient rice Hi resolution file (362 KB)	K deficient sugarbeet Hi resolution file (586 KB)

Other Nutrients: B, Mg, Zn, Ca

B deficient canola Hi resolution file (326 KB)	B deficient soybean Hi resolution file (1.56 MB)	Ca deficient corn Hi resolution file (120 KB)
Ca deficient sugarbeet Hi resolution file (53 KB)	Fe deficient banana Hi resolution file (500 KB)	Fe deficient cashew Hi resolution file (47 KB)

Mg deficient corn Hi resolution file (1.66 MB)	S deficient corn Hi resolution file (284 KB)	Zn deficient corn Hi resolution file (599 KB)
Zn deficient rice Hi resolution file (573 KB)	Zn deficient rice Hi resolution file (1.7 MB)

Additional Resources:

2006 Photo Contest Winners