Broken petioles as a deficiency symptom of phosphorus in potatoes

1966 ◽  
Vol 24 (3) ◽  
pp. 476-478 ◽  
Author(s):  
Micha? W. Borys
Keyword(s):  
Deficiency Symptom

scholarly journals Screening of Wild Strawberry Genotypes against Iron Deficiency under Greenhouse Conditions

2013 ◽  
Vol 41 (2) ◽  
pp. 560 ◽  
Author(s):  
Ayfer Alkan TORUN ◽  
Nazife ERDEM ◽  
Yildiz AKA KACAR ◽  
Sedat SERCE
Keyword(s):  
Dry Matter ◽  
Fe Deficiency ◽  
High Genetic Diversity ◽  
Breeding Programs ◽  
Deficiency Symptom ◽  
Wild Strawberry ◽  
Cultivated Species ◽  
Use Efficiency ◽  
Different Response ◽  
Spad Meter

The cultivated strawberry Fragaria × ananassa Duch. is the natural hybrid of F. chiloensis (L.) Mill. and F. virginiana Mill. The progenitor species have high genetic diversity compared with the cultivated genotypes; therefore, the use of wild relative in F. chiloensis breeding could provide a good for broadening the available genetic variations of cultivated species. In present study, 13 genotypes selected from strawberry super core collection were tested under Fe (-) and Fe (+) conditions for their response against Fe deficiency conditions in a growth medium (GM) (soil + sand + perlite), potentially able to simulate the actual GM in nature. SPAD-meter readings indicating chlorophyll levels of the leaf, shoot dry matter yield, Fe-efficiency rate, shoot total and active Fe concentrations were determined to evaluate the resistance levels of strawberry genotypes against Fe deficiency. Results of this study indicated that different response for strawberry subspecies and genotypes of the same subspecies grown in GM against Fe deficiency. Symptom for Fe deficiency of genotypes varied between 1-5, SPAD-meter readings 3, shoot dry matter yields and shoot Fe concentrations varied between 6.5-38, 1.02-6.06 g plant-1 and 41.8-233.1 mg kg-1 respectively. Iron-efficiencies of genotypes were found between 58–98%. Strawberry subspecies, F. virginiana spp. glauca, F. chiloensis ssp. chiloensis and F. chiloensis ssp. pacifica showed Fe-efficiency values of 93.8, 79.5 and 79.1% respectively. We concluded that shoot growth performance, Fe intake from GM, transfer of Fe from roots to shoots, shoot Fe-use efficiency, Fe deficiency symptom levels and SPAD-meter readings indicating chlorophyll levels were significant parameters to evaluate the resistance of strawberry genotypes against Fe deficiency. The most Fe-efficient genotypes belonging to F. virginiana spp. glauca could be used in breeding programs aiming at developing new strawberry genotypes suitable for growing under Fe deficient conditions.

scholarly journals Case Study of N Deficiency Symptom of Strawberry in the Soil Applied with Sea Deposit Compost

2011 ◽  
Vol 44 (6) ◽  
pp. 1023-1026 ◽  
Author(s):  
Yoo-Hak Kim ◽  
Myung-Sook Kim ◽  
Seong-Soo Kang ◽  
Sung-Won Yoon
Keyword(s):  
Deficiency Symptom ◽  
N Deficiency

scholarly journals Mystery Spot of `Enterprise' Apples Appears to Be a Low-calcium Disorder

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 793E-793
Author(s):  
George M. Greene
Keyword(s):  
Fire Blight ◽  
Apple Scab ◽  
Resistant Cultivars ◽  
Ca Deficiency ◽  
Deficiency Symptom ◽  
The Common ◽  
Transpirational Flow ◽  
High Level ◽  
Moderately Resistant ◽  
Atlantic Area

The apple cultivar Enterprise is a product of the Purdue–Rutgers–Illinois (PRI) disease-resistant apple breeding program. It has field immunity to apple scab, has a high level of resistance to cedar apple rust and fire blight, and is moderately resistant to apple powdery mildew. This resistance to these diseases makes the production of this cultivar desirable, especially on the popular fire blight-susceptible M.26 rootstock. Compared to many other scab-resistant cultivars, `Enterprise' has performed well in the mid-Atlantic area. However, this cultivar has been reported to be susceptible to low-Ca disorders when grown in New Jersey and Virginia. The mid-Atlantic area is notorious for the production of fruit with high levels of corking and bitter pit. This may be due to factors such as vigorous tree growth and low transpirational flow, which may be weather-related. Circumstantial evidence based on the production of clean `Enterprise' at Biglerville, Pa., where moderately high rates of CaCl2 have been applied in cover sprays, indicate that this disorder may be a Ca deficiency symptom. A replicated trial of many scab-resistant cultivars was established in 1990, 1991, and 1992. Due to the common incidence of low-Ca disorders, CaCl2 has been added to the cover spray program that is applied for insect control. Low-Ca disorders have never been seen in fruit produced at Biglerville, and the cover spray program applied 67 and 73 kg·ha–1 of CaCl2 (77% to 80% CaCl2, flake) in 1993 and 1994, respectively.

Studies in the nutrition of vegetables: Phosphate deficiency and yield tests on sand cultures of May King lettuce

1939 ◽  
Vol 29 (2) ◽  
pp. 229-248 ◽  
Author(s):  
R. M. Woodman
Keyword(s):  
Essential Elements ◽  
The Other ◽  
Phosphate Deficiency ◽  
Sand Culture ◽  
Deficiency Symptom ◽  
Normal Colour ◽  
The Media ◽  
Sand Cultures

Media from which phosphate was absent finally caused bronzing of the leaves of the resulting stunted plants of May King lettuce grown in sand culture, and red or crimson stalks. Phosphate alone produced characteristic purple (and/or bronze) and apple-green, flat, stunted rosettes with broad, non-crinkly leaves, and red stalks. Water alone caused stunted, straggly, purple plants, with relatively long, crimson stalks.Where some phosphate was supplied in addition to the other essential elements, a plant of normal colour resulted at first. Later, purple blotches appeared on the plants receiving inadequate supplies; the intensity of this purple became greater as the amount of phosphate in the medium diminished, and it could be controlled by varying the concentration of phosphate in the medium or the frequency of application. Another deficiency symptom was the tougher leaf resulting from a lack of phosphate. A sufficiency of phosphate caused earlier maturity.The media which contained the two greatest concentrations of phosphate were the best of those used because they gave the best growth, lettuces of the best colour without purple blotches, earlier maturity, and tenderer leaves.The final yields of heads were statistically the same with the two heaviest phosphate treatments, and both were greater by about 40% of the lesser yields than the two statistically equal yields with the lower amounts of phosphate. All the phosphate treatments gave yields superior by about 40,000–60,000% to the non-phosphate and phosphatealone yields, but this second difference had no commercial significance. Similar results were obtained for the roots, and for the dry weights of the tops and roots.

scholarly journals The deficiency symptom of microelements on rice plant

1955 ◽  
Vol 1 (1) ◽  
pp. 41-42 ◽  
Author(s):  
Akio Fujiwara ◽  
Michio Tsutsumi
Keyword(s):  
Rice Plant ◽  
Deficiency Symptom

Mental deficiency—symptom or disease?

1949 ◽  
Vol 13 (5) ◽  
pp. 313-327 ◽  
Author(s):  
Virginia M. Axline
Keyword(s):  
Mental Deficiency ◽  
Deficiency Symptom

Effects of lime and copper on subterranean clover grown on acid soil.

1953 ◽  
Vol 4 (2) ◽  
pp. 151 ◽  
Author(s):  
KD McLachlan
Keyword(s):  
Copper Deficiency ◽  
Acid Soil ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Positive Interaction ◽  
Relative Significance ◽  
Copper Status ◽  
Deficiency Symptom ◽  
Final Yield ◽  
Effect Of Copper

The results of a field experiment on two acid podzolized soils in the Heytesbury area, Victoria, are presented. Nutrient elements were tested on a phalaris (Phalaris tuberosa L.) - subterranean clover (Trifolium subterraneum L.) pasture on an area cleared from heath and on an adjoining area cleared from timber with an understorey of heath. Responses of clover to lime and copper, and interactions between these treatments were obtained. There was no response to potash, zinc, manganese, molybdenum, iron, magnesium, or boron on either soil. Lime increased the yield of clover at both sites, the greater effect occurring on the area cleared from timber. The effect of lime was not due to the release of soil molybdenum. Lime corrected defective nodulation, increased the survival of the plants, and to some extent also increased the yield of individual plants. The relative significance of these effects of lime in determining the final yield of clover per acre is discussed. The effect of copper was very different on the two soils. On the area cleared from heath, copper deficiency was severe. Here, copper increased the yield in the absence as well as in the presence of lime. The effect was considerably greater in the presence of lime, and this positive interaction was highly significant. Copper increased the number of plants per unit area and the yield of individual clover plants. On the area cleared from timber, copper decreased the yield in the absence of lime. Where lime had been applied, the effect of copper on the yield, though not significant, was positive. The evidence presented indicates that copper is also required on this soil. A copper deficiency symptom of subterranean clover is described. It is suggested that the copper status of the soils may influence the distribution of trees in the area.

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