گلدهی و عملکرد میوه توت‌فرنگی رقم ’اروماس‘ تحت تأثیر بور و روی در کشت هیدروپونیک

نوع مقاله : مقاله کامل علمی پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی‌ارشد گروه علوم باغبانی دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران

2 نویسنده مسئول، استادیار گروه علوم باغبانی دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران

3 دانشیار گروه علوم باغبانی دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران

چکیده

سابقه و هدف: با افزایش رشد جمعیت در جهان، نیاز مردم به میوه‌ها روز به روز افزایش می‌یابد. میوه‌ها بخش مهمی از رژیم غذایی انسان را تشکیل می‌دهند و مصرف آن‌ها تضمین‌کننده سلامت انسان‌هاست که در این میان توت‌فرنگی دارای اهمیت ویژه‌ای است. میوه آن سرشار از فیبر، ویتامین ث، پتاسیم و آنتی‌اکسیدان‌ها است. با توجه به ارزش غذایی بالای میوه توت‌فرنگی و همچنین گسترش کشت بدون خاک در جهان و در کشور ما توجه به تغذیه گیاه اهمیت زیادی دارد. تغذیه مناسب گیاه، یکی از راه‌های رسیدن به تولید محصولی اقتصادی است. از آنجایی‌ که تعادل عناصر غذایی در زمان مناسب برای تولید میوه تجاری، بهبود عملکرد و کیفیت میوه ضروری است، بنابراین محلول‌پاشی برگی در مراحل کلیدی می‌تواند اثر مثبتی بر صفات کمی و کیفی میوه محصولات چندساله داشته باشد. در ﺑﯿﻦ ﻋﻨﺎﺻﺮ ﻣﻌﺪﻧﯽ ﮐﻪ ﺑﺮ روی ﻓﯿﺰﯾﻮﻟﻮژی ﮔﯿﺎه ﻧﻘﺶ دارﻧﺪ، دو ﻋﻨﺼﺮ کم‌مصرف ﺑﻮر و روی ﺑﻪ دﻟﯿﻞ ارﺗﺒـﺎط ﺑـﺎ ﺳﻨﺘﺰ ﻫﻮرﻣﻮن‌ﻫﺎی دروﻧﯽ ﮔﯿﺎه اﻫﻤﯿـﺖ وﯾـﮋه‌ای دارﻧـﺪ. بدین ترتیب، نظر به اهمیت عناصر کم‌مصرف در بهبود عملکرد محصولات باغی و حفظ محیط زیست، این تحقیق به منظور بررسی اثر محلول‌پاشی روی و بور و ترکیبات تلفیقی آن‌ها بر رشد و عملکرد توت‌فرنگی رقم اروماس در کشت هیدروپونیک اجرا گردید.
مواد و روش‌ها: آزمایشی به صورت فاکتوریل 3×3 در قالب طرح بلوک‌های کامل تصادفی با 9 تکرار در طی سال 1395-1394 در گلخانه پژوهشی دانشگاه علوم کشاورزی و منابع طبیعی ساری اجرا شد. تیمارهای مورد استفاده شـامل سولفات‌روی (0، 100 و 200 میلی‌گرم بر لیتر) و اسیدبوریک (0، 500 و 1000 میلی‌گرم بر لیتر) بود. محلول‌پاشی تیمارها در سه مرحله صورت گرفت. مرحله اول محلول‌پاشی یک هفته پیش از باز شدن گل‌ها و مراحل بعدی تیمارها با فاصله دو هفته از یکدیگر بر روی بوته‌ها اسپری شدند. در این پژوهش تأثیر کاربرد عناصر روی و بور بر عملکرد، طول ریشه، قطر ریشه، شاخص کلروفیل، قطر طوقه، کلروفیل کل، کلروفیل a/b، سطح ویژه برگ، وزن ویژه برگ، قطر دمبرگ، عرض برگ، طول برگ، سطح برگ، زمان شروع گلدهی، طول دوره گلدهی، طول دمگل، قطر گل، تعداد گل، زمان شروع میوه‌دهی، طول دوره میوه‌دهی، تعداد میوه، درصد تشکیل میوه، درصد میوه‌های بازاری، درصد میوه‌های غیربازاری، نسبت طول به قطر میوه (L/D)، وزن خشک میوه، حجم میوه ودرصد ماده خشک میوه مورد بررسی قرار گرفت.
یافته‌ها: . نتایج نشان داد کاربرد 200 میلی‌گرم بر لیتر سولفات‌روی به همراه 500 میلی‌گرم بر لیتر اسیدبوریک، به‌طور معنی‌داری باعث افزایش قطر طوقه شد. کاربرد منابع حاوی بور و روی، غلظت و شاخص کلروفیل در توت‌فرنگی رقم اروماس را در مقایسه با شاهد به ‌طور معنی‌داری افزایش داد. بالاترین سطح ویژه برگ (52/141 سانتی‌متر مربع بر گرم) در پاسخ به تیمار 100 میلی‌گرم بر لیتر سولفات‌روی به همراه 500 میلی‌گرم بر لیتر اسیدبوریک به دست آمد. کاربرد اسیدبوریک و سولفات‌روی، تعداد گل، طول دوره گلدهی و تعداد میوه‌ را به‌طور معنی‌داری افزایش داد. با این حال با افزایش غلظت اسیدبوریک از 500 به 1000 میلی‌گرم بر لیتر، تعداد میوه در گیاه به‌طور معنی‌داری کاهش یافت. به‌طور کلی کاربرد 200 میلی‌گرم بر لیتر سولفات روی به همراه 500 میلی‌گرم بر لیتر اسید‌بوریک جهت دسترسی به حداکثر دوره میوه‌دهی (32/91 روز) و بالاترین عملکرد (4/210 گرم) میوه توت‌فرنگی رقم اروماس پیشنهاد می‌گردد.
نتیجه‌گیری کلی: در مجموع می‌توان نتیجه گرفت که مصرف برگی عناصر ‌کم‌مصرف مانند روی و بور و کاربرد تلفیقی آن‌ها در اکثر فاکتورهای اندازه‌گیری شده زایشی و رویشی موجب بهبود پارامترهای مورد مطالعه شد. بنابراین به منظور دستیابی به عملکرد بالا و بهبود صفات رشدی توت‌فرنگی رقم اروماس در کشت هیدروپونیک می‌توان از نتایج این پژوهش بهره‌مند گردید.

کلیدواژه‌ها


عنوان مقاله [English]

Flowering and fruit yield of ‘Aromas’ strawberry as affected by zinc and boron in hydroponic cultivation

نویسندگان [English]

  • Ara Alinejad Elahshah 1
  • Hossein Moradi 2
  • Hossein Sadeghi 3
1 M.Sc. Graduate, Dept. of Horticultural Sciences, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran
2 Corresponding Author, Assistant Prof., Dept. of Horticultural Sciences, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran.
3 Associate Prof., Dept. of Horticultural Sciences, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran
چکیده [English]

Background and objectives: As the world's population grows, demand for fruits is increasing day by day. Fruits are an important part of the human diet and their consumption guarantees human health and strawberries are of particular importance. Strawberries are high in fiber, vitamin C, potassium and antioxidants. Due to the high nutritional value of strawberry fruits and the expansion of hydroponic cultivation in the world, and in our country, it is important to pay attention to the plant nutrition. Optimal nutrition of the plant is one of the main strategies to achieve economic productivity. Since nutrient balance is essential for commercial fruit production, improving yield and fruit quality, so foliar application at key stages can have a positive effect on the quantitative and qualitative traits of perennial crops. Among essential minerals that are involved in plant physiology, micronutrients of zinc (Zn) and boron (B), because of their relation with synthetic hormones are particularly important. So according to the importance of micronutrients on horticultural yield improving and environmental protection, this investigation was conducted to evaluate the effect of foliar application of zinc and boron and combination of them on growth and yield of strawberry cultivar ʻAromas’ in hydroponic system.

Materials and methods: A 3×3 factorial experiment, arranged in a randomized complete block design (RCBD) with nine replications, was conducted at the research greenhouse of Sari Agricultural Sciences and Natural Resources University in 2016 and 2017. Treatments were zinc sulfate (0, 100 and 200 mg l-1) and boric acid (0, 500 and 1000 mg l-1). Foliar application of the treatments was carried out in three stages. The first stage was carried out a week before the flowering and in the next steps, the treatments were sprayed on plants at intervals of two weeks. In this research, the effect of zinc and boron on the yield, root length, root diameter, chlorophyll index, crown diameter, total chlorophyll, chlorophyll a/b, specific leaf area, specific leaf weight, petiole diameter, leaf width, leaf length, leaf area, flowering time, flowering period, peduncle length, flower diameter, flower number, fruitification time, fruitification period, fruit number, percentage of fruit set, percentage of marketable fruits, percentage of non-marketable fruits, fruit length to diameter ratio (L/D), fruit dry weight, fruit volume and percentage of fruit dry matter were investigated.

Results: Results showed that the application of 200 mg l-1 zinc sulfate plus 500 mg l-1 boric acid significantly increased the crown diameter. Application of zinc and boron sources significantly increased the chlorophyll concentration and index of ‘Aromas’ strawberry compared to the control treatment. The highest increases in specific leaf area (141.52 cm2g-1) were monitored in response to 100 mg l-1 zinc sulfate + 500 mg l-1 boric acid treatment. The application of zinc sulfate and boric acid significantly increased the number of flower, flowering period and number of fruit. However, by increasing the concentration of boric acid (from 500 to 1000 mg l-1) significantly reduced the number of fruit. Generally, application of 200 mg l-1 zinc sulfate plus 500 mg l-1 boric acid to achieve increased fruitification period (91.32 day) and yield (210.4 g) of ‘Aromas’ strawberry fruit is suggested.

Conclusion: In general, it can be concluded that foliar application of zinc and boron and combination of both them in most of the measured reproductive and vegetative factors, improved the parameters studied.Therefore, in order to achieve high yield and improve the growth traits of strawberry cultivar ʻAromas’ in hydroponic system, the results of this research can be applied.

کلیدواژه‌ها [English]

  • Boric acid
  • Fruitification period
  • Specific leaf area
  • Zinc sulfate
1.Abdollahi, M., Eshghi, S. and Tafazoli, E. 2010. Interaction of paclobutrazol, boron and zinc on vegetative growth, yield and fruit quality of strawberry (Fragaria × Ananassa Duch. cv. Selva). J. Biol. Environ. Sci. 4: 11. 67-75.
2.Abdollahi, M., Eshghi, S., Tafazzoli, E. and Moosavi, N. 2012. Effects of paclobutrazol, boric acid and zinc sulfate on vegetative and reproductive growth of strawberry cv. Selva. J. Agric. Sci. Technol. 14: 357-363.
3.Abedi Babaarabi, S., Movahedi Dehnavi, M., Yadavi, A. and Adhami, A. 2011. Effect of Zn and K spraying on safflower physiological traits and yield under drought stress. Elect. J. Crop Prod.4: 1. 75-95. (In Persian)
4.Asgharzade, A., Valizade1, G.A.and Babaeian, M. 2012. Investigatingthe effect of boron spray on yieldnutrient content, texture and brix indexof apple (Sheikh Amir Variety) inShirvan region. Afr. J. Microbiol. Res.6: 11. 2682-2685.
5.Ashoori, M., Lolaei, A., Zamani, S. and Mobasheri, S. 2013. Effects of N and Zn on quantity and quality characters of grape vine (Vitis vinifera). Int. J. Agric. Crop Sci. 5: 3. 207-211.
6.Bowen, P.A. and Kliewer, W.M. 1990. Relationships between the yield and vegetative characteristics of individual shoots of ‘Cabernet Sauvignon’ grapevines. J. Am. Soc. Hort. Sci.115: 4. 534-539.
7.Brown, P.H., Bellaloui, N., Wimmer, M.A., Bassil, E.S., Ruiz, J., Hu, H., Pfeffer, H., Dannel, F. and Romheld, V. 2002. Boron in plant biology. Plant Biol. 4: 205-223.
8.Carter, G.A. and Knapp, A.K. 2001. Leaf optical properties in higher plants: linking spectral characteristics to stress and chlorophyll concentration. Am. J. Bot.88: 4. 677-684.
9.Casanova, L., Casanova, R., Moret, A. and Agustí, M. 2009. The application of gibberellic acid increases berry size of ‘Emperatriz’ seedless grape. Span. J. Agric. Res. 7: 4. 919-927.
10.Castro, J. and Sotomayor, C. 1997.The influence of boron and zinc sprays at bloom time on almond fruit set.
Acta Hort. 470: 402-405.
11.Crane, J.C. 1969. The role ofhormones in fruit set and development. HortScience. 4: 2. 108-111.
12.Davis, T.M., Denoyes-Rothan, B. and Lereeteau-Kohler, E. 2007. Strawberry (chapter 8). In Fruits and nuts. Springer Berlin Heidelberg, pp. 189-205.
13.Desouky, I.M., Haggag, L.F.,El-Migeed, M.A., Kishk, Y.F.M. andEl-Hady, E.S. 2009. Effect of boron and calcium nutrients sprays on fruit set, oil content and oil quality of some oliveoil cultivars. World J. Agric. Sci.5: 2. 180-185.
14.Ebadi, A., Atashkar, D. and Babalar, M. 2001. Effect of boron on pollination and fertilization in seedless grapevine cvs White seedless and Askary. Iranian J. Agric. Sci. 32: 457-465. (In Persian)
15.Etehadnejad, F. and Aboutalebi, A. 2014. Evaluating the effects of foliar application of nitrogen and zinc on yield increasing and quality improvement of apple cv. ‘Golab Kohanz’. Indian J. Fundam. Appl. Life Sci. 4: 125-129.
16.Fageria, N.K. 2009. The use of nutrients in crop plants. Boca Raton, USA: CRC Press, 448p.
17.Ganie, M.A., Akhter, F., Bhat, M., Malik, A., Junaid, J.M. and Shah, M.A. 2013. Boron-a critical nutrient element for plant growth and productivity with reference to temperate fruits. Curr. Sci. 104: 76-85.
18.Ghorbanli, M. 2005. Mineral nutrition of plants. Tarbiat Modarres University Press, 235p. (In Persian)
19.Greenfield, H. and Southgate, D.A. 2003. Food composition data: production, management, and use. Food and Agriculture Organisation of the United Nations (FAOUN), pp. 100-104.
20.Haghighat Afshar, M., Babalar, M., Kashi, A., Ebadi, A. and Asgari, M.A. 2006. The effect of NH4/NO3 ratio on growth and yield of some different strawberry cultivars (Fragaria × ananassa Duch.). JWSS-Isfahan Univ. Technol. 10: 3. 321-335. (In Persian)
21.Hancock, J.F., Sjulin, T.M. and Lobos, G.A. 2008. Strawberries. In: Temperate fruit crop breeding, Springer, Dordrecht, pp. 393-437.
22.Hanson, E.J., Chaplin, M.H. and Breen, P.J. 1985. Movement of foliar applied boron out of leaves and accumulation in flower buds and flower parts of Italian prune. HortScience. 20: 747-748.
23.Hasani, M., Zamani, Z., Savaghebi, G. and Fatahi, R. 2012. Effects of zincand manganese as foliar spray on pomegranate yield, fruit quality andleaf minerals. J. Soil Sci. Plant Nutr.12: 3. 471-480.
24.Hashemabadi, D., Hosheinzade, M., Kaviani, B., Musavi, M., Keyghobadi, S. and Zahiri, S. 2014. Effect of nano-silver and boric acid on extending the vase life of cut rose (Rosa hybrid L.).J. Environ. Biol. 35: 833-88.
25.Hassan, S.A. 2000. Morphological and physiological studies on flowering, pollination and fruiting of ‘Picual’ olive trees. Ph.D. Thesis, Faculty of Agriculture, Cairo University of Egypt.
26.Hosseini Farahi, M., Goodarzi, K. and Kavoosi, B. 2008. Correction of Zn deficiency and increasing of yield via trunk injection method on grapevine (Vitis vinifera L.) cv. Askari. J. Hort. Sci. 23: 2. 108-118. (In Persian)
27.Kailis, S. and Harris, D. 2007. Table olive processing: general aspects. In: Producing table olives. Collingwood, Australia: CSIRO publishing, Landlinks Press, 344p.
28.Kamiloglu, O. 2011. Influence of some cultural practices on yield, fruit quality and individual anthocyanins of table grape cv. ‘Horoz Karasi’. J. Anim. Plant Sci. 21: 2. 240-245.
29.Kazemi, M. 2014. Influence offoliar application of iron, calciumand zinc sulfate on vegetative growth and reproductive characteristics of strawberry cv. ‘Pajaro’. Trakia J. Sci.1: 21-26.
30.Keshavarz, K., Vahdati, K., Samar, M., Azadegan, B. and Brown, P.H. 2011. Foliar application of zinc and boron improves walnut vegetative and reproductive growth. HortTechnology. 21: 2. 181-186.
31.Khan, A.S., Nasir, M., Malik, A.U., Basra, S.M.A. and Jaskani, M.J. 2015. Combined application of boron and zinc influence the leaf mineral status, growth, productivity and fruit quality of ‘Kinnow’mandarin (Citrus nobilis lour × Citrus deliciosa tenora). J. Plant Nutr. 38: 821-838.
32.Khayyat, M., Tafazoli, E., Eshghi, S. and Rajaee, S. 2007. Effect of nitrogen, boron, potassium and zinc sprays on yield and fruit quality of date palm.Am. Eurasian J. Agric. Environ. Sci.2: 289-296.
33.Lee, S.H., Kim, W.S. and Han, T.H. 2009. Effects of post-harvest foliar boron and calcium applications on subsequent season’s pollen germination and pollen tube growth of pear(Pyrus pyrifolia). Sci. Hort. 122: 77-82.
34.Lesani, H. and Mojtehedi, M. 2002. Plant physiology. Tehran University Press; 726p. (In Persian)
35.Lichtenthaler, H.K. and Buschmann, C. 2001. Chlorophylls and carotenoids: Measurement and characterization
by UV-VIS spectroscopy. Current Protocols in Food Analytical Chemistry (CPFA).
36.Lolaei, A., Rezaei, M.A., Khorrami Raad, M. and Kaviani, B. 2012. Effect of paclobutrazol and sulfate zinc on vegetative growth, yield and fruit quality of strawberry (Fragaria × ananassa Duch. cv. Camarosa). Ann. Biol. Res.3: 10. 4657-4662.
37.Marschner, H. 2012. Marschner’s mineral nutrition of higher plants(3th Ed.). London, UK: Academic Press, 672p.
38.Marshall, J.D. and Monserud, R.A. 2003. Foliage height influences specific leaf area of three conifer species. Can. J. For. Res. 33: 1. 164-170.
39.Mashayekhi, K. and Atashi, S. 2012. Effect of foliar application of boron and sucrose on biochemical parameters of ʻCamarosa’ strawberry. J. Plant Prod. 19: 4. 157-171. (In Persian)
40.Mohammadkhany Balesini, Y., Imani, A. and Piri, S. 2013. Effects of some of nutritional materials on fruit set and its characteristics in apple. J. Basic Appl. Sci. Res. 3: 281-285.
41.Mohseni, M., Haddadi, M. and Valiallahpour, R. 2012. Effects of application boron and zinc on the process of corn in Mazandaran. New Find. Agric. 7: 2. 177-185. (In Persian)
42.Mollahoseini, H., Solhi, M., Baghi, E. and Ghayour, F. 2009. Strawberry fertilizer guide (1th Ed.). Avay Masih Press, 230p. (In Persian)
43.Motesharezade, B., Malakuty, M.J. and Nakhoda, B. 2001. Effects of N, ZnSO4 and B sprays on photochemical efficiency of sweet cherry. Hortic. Newsl. 12: 106-111.
44.Muhammad, A. and Singh, A. 2007. Intra-row spacing and pruning effects on fresh tomato yield in Sudan Savanna of Nigeria. J. Plant Sci. 2: 2. 153-161.
45.Nikkhah, R., Nafar, H., Rastgoo, S.and Dorostkar, M. 2013. Papertitle: effect of foliar application of boron and zinc on qualitative and quantitative fruit characteristics of grapevine(Vitis vinifera L.). Int. J. Agric. Crop Sci. 6: 9. 485-492.
46.Norbakhsh, N., Gholami, M. and Sarikhani, H. 2009. Effects of foliar application calcium and boron on yield and fruit quality of strawberry (Fragaria × ananassa Duch. cv. Queen Eliza). M.Sc. Thesis, Faculty of Agriculture,Bu Ali Sina University, Hamadan, Iran. (In Persian)
47.Nyomora, A.M.S. and Brown, P.H. 1997. Fall foliar-applied boron increases tissue boron concentration and nut set
of almond. J. Am. Soc. Hort. Sci.122: 405-410.
48.Nyomora, A.M.S., Brown, P.H.,Pinney, K. and Polito, V.S. 2000. Foliar application of boron to almond trees affects pollen quality. J. Am. Soc. Hort. Sci. 125: 265-270.
49.Papadakis, I.E., Dimassi, K.N., Bosabadilis, A.M., Therios, I.N., Patakas, A. and Giannakoula, A. 2004. Boron toxicity in ‘Clementine’ mandarin plants grafted on two rootstock. Plant Sci. 166: 539-547.
50.Puzina, T.I. 2004. Effect of zinc sulfate and boric acid on the hormonal status of potato plants in relation to tuberization. J. Plant Physiol. 51: 2. 209-215.
51.Quin, X. 1996. Foliar sprays of B, Zn and Mg and their effects on fruit production and quality of Jincheng orange. J. South west Agric. Univ.18: 1. 40-45.
52.Rafeii, S. and Pakkish, Z. 2014. Effect of boric acid spray on growth and development of strawberry (Fragaria ananassa cv. Camarosa). Int. J. Adv. Biol. Biomed. Res. 2: 4. 1060-1063.
53.Razzaq, K., Khan, A.S., Malik, A.U., Shahid, M. and Ullah, S. 2013. Foliar application of zinc influences the leaf mineral status, vegetative and reproductive growth, yield andfruit quality of ‘Kinnow’ mandarin (Citrus reticulata Blanco.). J. Plant Nutr. 36: 1479-1495.
54.Sanchez, E.E. and Righetti, T.L. 2005. Effect of postharvest soil and foliar application of boron fertilizer on the partitioning of boron in apple trees. HortScience. 40: 2115-2119.
55.Sayyad-Amin, P. and Shahsavar, A.R. 2013. The influence of urea, boric acid and zinc sulphate on vegetative traits of olive (Olea Europaea L. ‘Shengeh’) stone by foliar application. Acta Hortic. 981: 981. 343-347.
56.Seifi Nadergholi, M., Yarnia, M. and Rahimzade Khoei, F. 2011. Effect of zinc and manganese and their application method on yield and yield components of common bean (Phaseolus vulgaris L. cv. Khomein). Middle East J. Sci. Res. 8: 5. 859-865.
57.Shafea, L., Saffari, M., Emam, Y. and Mohammadinejad, G. 2011. Effect of nitrogen and zinc fertilizers on leaf zinc and chlorophyll contents, grain yield and chemical composition of two maize(Zea mays L.) hybrids. Seed Plant Prod. J. 27: 2. 235-246. (In Persian)
58.Sharma, R.R. 2002. Growing strawberries. First edition published by international book distributing CO. Indian Agric. Res. Inst. New Delhi.
59.Shukla, A.K. 2011. Effect of foliar application of calcium and boron on growth, productivity and quality of Indian gooseberry (Emblica officinalis). Indian J. Agric. Sci. 81: 7. 628-632.
60.Singh, B. and Usha, K. 2002. Effectof macro and micro-nutrient spray on fruit yield and quality of grape (Vitis vinifera L.) cv. Perlette. Acta Hort.594: 197-202.
61.Smit, J.N. and Combrink, N.J.J. 2005. Pollination and yield of winter-grown greenhouse tomatoes as affected by boron nutrition, cluster vibration and relative humidity. S. Afr. J. Plant Soil. 22: 2. 110-115.
62.Ullah, S., Khan, A.S., Malik, A.U., Afzal, I., Shahid, M. and Razzaq, K. 2012. Foliar application of boron influences the leaf mineral status, vegetative and reproductive growth, yield and fruit quality of ‘Kinnow’ mandarin (Citrus reticulata Blanco.).
J. Plant Nutr. 35: 2067-2079.
63.United States Department of Agriculture (USDA). 2004a. Guidelines for scoring undeveloped (damage) or badly deformed (serious damage) for Strawberries. https://www.ams.usda.gov.
64.United States Department of Agriculture (USDA). 2004b. Agriculture marketing service, Strawberries and Other Berries. Shipping Point and Market Inspection Instructions.
65.Ute, K. and Clemens, S. 2005. Functions and homeostasis of zinc, copper,and nickel in plants. Top. Curr. Gen.14: 215-271.
66.Wimmer, M.A. and Eichert, T. 2013. Review: Mechanisms for boron deficiency-mediated changes in plant water relations. Plant Sci. 203: 25-32.
67.Zoecklein, B.W., Wolf, T.K., Pélanne, L., Miller, M.K. and Birkenmaier,S.S. 2008. Effect of vertical shoot-positioned, smart-dyson, and geneva double-curtain training systems on viognier grape and wine composition. Am. J. Enol. Vitic. 59: 1. 11-21.