Plant nutrition research: Priorities to meet human needs for food in sustainable ways

Çakmak, İsmail; Horst, W. J.; Bürkert, Andreas; Claassen, N.; Flessa, Heinz; Frommer, Wolf B; Goldbach, Heiner E.; Olfs, Hans‐Werner; Römheld, Volker

doi:10.1007/978-94-017-2789-1_1

Cited by 186 publications

(220 citation statements)

References 117 publications

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“…In most cases, rice cultivated soils are very low in plant-available Zn leading to further decreases in grain Zn concentration (Alloway 2004;Cakmak 2008). Previous studies have reported that about 30% of the cultivated soils of the world are Zn deficient and about 50% of the soils used for cereal crop production have low levels of Zn available for plants (Sillanpaa 1982;Graham et al 1992;Welch 1993;Cakmak 2002). Several strategies have been suggested to improve Zn concentration in rice seed, raising concentration up to 60 mg Zn kg À1 for agronomic benefits and human health, such as conventional breeding, fertilizer management, seed priming and fortification (Welch and Graham 2004;Cakmak 2008;Prom-u-thai et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of different foliar zinc application at different growth stages on seed zinc concentration and its impact on seedling vigor in rice

Boonchuay

Çakmak

Rerkasem

et al. 2013

Soil Science and Plant Nutrition

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121

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This study evaluated how zinc (Zn) concentration of rice (Oryza sativa L.) seed may be increased and subsequent seedling growth improved by foliar Zn application. Eight foliar Zn treatments of 0.5% zinc sulfate (ZnSO 4 Á 7H 2 O) were applied to the rice plant at different growth stages. The resulting seeds were germinated to evaluate effects of seed Zn on seedling growth. Foliar Zn increased paddy Zn concentration only when applied after flowering, with larger increases when applications were repeated. The largest increases of up to ten-fold were in the husk, and smaller increases in brown rice Zn. In the first few days of germination, seedlings from seeds with 42 to 67 mg Zn kg À1 had longer roots and coleoptiles than those from seeds with 18 mg Zn kg À1 , but this effect disappeared later. The benefit of high seed Zn in seedling growth is also indicated by a positive correlation between Zn concentration in germinating seeds and the combined roots and shoot dry weight (r ¼ 0.55, p < 0.05). Zinc in rice grains can be effectively raised by foliar Zn application after flowering, with a potential benefit of this to rice eaters indicated by up to 55% increases of brown rice Zn, and agronomically in more rapid early growth and establishment.

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Section: Introductionmentioning

confidence: 99%

Effect of different foliar zinc application at different growth stages on seed zinc concentration and its impact on seedling vigor in rice

Boonchuay

Çakmak

Rerkasem

et al. 2013

Soil Science and Plant Nutrition

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121

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“…Weeding of interrows did not completely eliminate weeds, which are often much more competitive in nutrients uptake than maize and reduced its availability for the maize. On the other hand, in plants producing a large amount of biomass, content of trace elements per unit weight may be lower than in those producing less biomass, since they are unable to take up enough nutrients (Cakmak 2004, Orosz et al 2009). This was confirmed in this study with respect to Cu and Zn (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Uptake of Cu, Zn, Fe and Mn by maize in the strip cropping system

Głowacka¹

2013

PLANT SOIL ENVIRON

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A field experiment was conducted in 2008-2010 at the Experimental Station of the Faculty of Agricultural Sciences in Zamość (50°42'N, 23°16'E), University of Life Sciences in Lublin. The aim of the study was to assess the impact of cropping method and weed control methods on the content of Cu, Zn, Fe and Mn in maize and on their uptake. Two cropping methods were studied -sole cropping and strip cropping (common bean, dent maize and spring barley in adjacent strips) and two weed control methods -mechanical and chemical. Strip cropping reduced Mn content in maize, did not significantly affect Zn content, and increased accumulation of Cu and Fe. The content and uptake of the elements by maize depended on the position of the row in the strip and on the adjacent plant species. Placement next to beans resulted in higher Fe and Zn content, while placement next to barley increased Cu content. The highest Mn content was noted in maize from the centre row. In general, micronutrient uptake by maize was lowest in the middle row. These results indicate that strip cropping can be an effective agricultural practise for plant biofortification.

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“…Productores agrícolas en el trópico, típicamente, deben aplicar mucho más fertilizantes, que lo utilizado por agricultores de zonas templadas, para alcanzar los mismos incrementos en rendimiento. Esto es particularmente cierto, para el caso del fosfato, el cual se fija fácilmente a las partículas del suelo, reduciendo su disponibilidad y difusión hacia las raíces de las plantas (Cakmak, 2002;Owen et al, 2015). Por lo tanto, es necesario el desarrollo de tecnologías que permitan mejorar la eficiencia en el uso y aprovechamiento de recursos, como en el caso del fósforo del suelo, particularmente en el trópico, con el fin de incrementar la productividad a menores costos y así, la competitividad de los cultivos de forma sostenible.…”

Section: La Seguridad Alimentariaunclassified

“…De tal forma que los microbiólogos, han trabajado tradicionalmente, con agrónomos y especialistas en producción agrícola, para controlar patógenos de plantas. Sin embargo, los microorganismos también interactúan con las plantas, en una gran variedad de formas benéficas, confiriendo mejoras en la nutrición vegetal, resistencia a la sequía, resistencia a los patógenos y resistencia a herbívoros y tolerancia a altas temperaturas (Cakmak, 2002;Conniff, 2013;Reid y Greene, 2013).…”

Section: La Seguridad Alimentariaunclassified

Ciencia Y Tecnología Colombo-Suiza Ayuda a Alimentar El Planeta: De La Revolución Verde a La Revolución Microbiana

Rodríguez

Sanders

2016

Acta biol. Colomb.

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RESUMENPor milenios los agricultores han mejorado sus cultivos utilizando la variación genética y seleccionando las mejores variedades. Hoy nos enfrentamos a un reto sin precedentes: alimentar la creciente población mundial. Así, aumentar los rendimientos de cultivos de importancia global, como la yuca, es crucial para la seguridad alimentaria. Esta raíz tropical alimenta aproximadamente 1.000 millones de personas en alrededor de 105 países en el mundo y sus productos son la tercera fuente de calorías más importante para los países del trópico. Esta planta es altamente dependiente de la asociación con hongos formadores de micorrizas arbusculares (HFMA). Estos hongos ayudan a la planta a obtener fósforo del suelo, un nutriente limitante principalmente en los suelos del trópico. Recientemente, nuestro grupo de investigación colombo-suizo, mostró que la inoculación de cultivos de yuca con Rhizophagus irregularis incrementó los rendimientos en dos localidades diferentes de Colombia. Más aún, conseguimos enormes diferencias en la productividad de la yuca, utilizando diferentes líneas genéticamente mejoradas del hongo R. irregularis, en condiciones de campo. Es improbable observar cambios tan dramáticos, en campo, en la producción de yuca, con un ciclo de mejoramiento de la planta. Así, combinando la agronomía con la biología y la genética, proponemos un cambio en el paradigma del mejoramiento vegetal, que pueda contribuir a resolver el problema de hambruna en el mundo.Palabras clave: mejoramiento genético, micorrizas arbusculares, Rhizophagus irregularis, seguridad alimentaria, suelos tropicales, yuca.. ABSTRACTFor millennia farmers have been improving crops by using their natural genetic variation, selecting the best varieties. Today we face an unprecedented challenge to feed the growing global human population that can only be achieved with major changes in how we combine science and technology with agronomy. Cassava is globally important, annually feeding almost a billion people in 105 countries. It is an important crop for subsistence farming throughout tropical and subtropical regions for smallholder farmers, but especially in sub-Saharan Africa. Cassava is highly dependant on arbuscular mycorrhizal fungi to survive. Mycorrhizal fungi form symbioses with all our major crops. They help plants obtain phosphate from the soil; an essential nutrient that limits cassava production in the tropics. Our Colombian-swiss group have shown a significant effect of Rhizophagus irregularis inoculation on yield of cassava in field conditions in two locations in Colombia. Further, huge differences in the productivity of cassava can be achieved by inoculating it with genetically different lines of R. irregularis. The variation in cassava growth we observed is so large that it would be very unlikely in one generation of plant breeding to see similar variation in cassava growth. By combining agronomy with biology and genetics, we propose a shift in the paradigm of plant breeding that could help to solve the problem of hunger in the ...

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Plant nutrition research: Priorities to meet human needs for food in sustainable ways

Cited by 186 publications

References 117 publications

Effect of different foliar zinc application at different growth stages on seed zinc concentration and its impact on seedling vigor in rice

Effect of different foliar zinc application at different growth stages on seed zinc concentration and its impact on seedling vigor in rice

Uptake of Cu, Zn, Fe and Mn by maize in the strip cropping system

Ciencia Y Tecnología Colombo-Suiza Ayuda a Alimentar El Planeta: De La Revolución Verde a La Revolución Microbiana

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