Citrus Manuring—its Effect on Cropping and on the Composition and Keeping Quality of Oranges

Anderssen, F. G.

doi:10.1080/03683621.1938.11513494

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…17 it requires a marked increase in the phosphate level of the substrata to raise the phosphate of the leaves probably accounts for the failure, in many field trials, to increase the phosphorus in citrus leaves by soil application even though it can be shown that phosphorus has penetrated into the root zone. Anderssen (1937) and Finch and McGeorge (1945) have suggested that high nitrogen supply tends to prevent phosphate absorption by citrus. The authors have never been able to verify this in their controlled nutritional experiments and believe rather that it is merely a question of phosphate supply coupled the period of new spring growth and suggests that, at this time, phosphorus is translocated from old leaves to emerging new growth.…”

Section: Peecentage Of P E E H a E V E S T Deops In E E L A T I O N Tmentioning

confidence: 99%

Effect of various maintained levels of phosphate on the growth, yield, composition, and quality of Washington Navel oranges

Chapman¹,

Rayner²

1951

Hilg

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this element caused the older leaves to turn a brownish green color and fall off prematurely. Many such leaves developed necrotic areas on the margins or tips. Phosphorus-deficient leaves showed values ranging between .04 to .07 per cent phosphorus in the dry matter. Subsequently, Chapman and Brown (1941) described the effects of acute phosphorus deficiency on the fruit, foliage, and composition of navel orange trees growing in soil. The foliage symptoms were similar to those reported by Haas. The fruit produced on the phosphorus-deficient trees was rather coarse, of thicker rinds, and had a lower juice content than fruit from trees well supplied with this element. The acid was higher, but total solids in the juice were not measurably affected. Analyses of various parts of healthy and phosphorus-deficient trees showed very low levels of phosphorus in all parts of the plant except the young leaves. The old leaves of the phosphorus-deficient trees contained .05 per cent total phosphorus as compared with .11 per cent in healthy trees. Nitrogen, potassium, and magnesium were higher in the phosphorus-deficient leaves but calcium was lower. A progress report on the present experiment, describing some of the effects of phosphorus lack on fruit, was published several years ago by Chapman, Brown, and Liebig (1943). The fruit from the low and phosphate-deficient trees was rather coarse textured and some of it was misshapen. It also lacked firmness, had hollow center tendencies, the rind was thicker, and juice per centage lower than in fruit from trees receiving adequate phosphate. In connection with field fertilizer experiments carried on in different parts of the world, various observations and data as stated relative to phosphorus effects have been noted. In California, Jones and Parker (1949) found that fruit from Washington Navel orange trees that had been fertilized with phos phorus for over 20 years had a slightly higher juice content and lower ascorbic and total acid content than did that from trees fertilized only with nitrogen or nitrogen and potassium. No yield responses from phosphorus were obtained in this experiment (Parker and Batchelor, 1942), and the quality differences in general were considered to be of doubtful commercial importance. Finch and McGeorge (1945), in a grapefruit fertilizer experiment carried on for seven years in Arizona, got no increases in yield from phosphate or potash, and the quality and maturity of fruit from this experiment, as reported by Hilgeman (1941), were not affected by phosphorus fertilization. In tests of citrus fruit from Florida orchards fertilized with varying amounts of potash and phosphate, Collison (1913) found that fruit from the high potash or chards tested a little higher in acidity than did the fruit from orchards receiv ing little potash. However, in the case of phosphate, no significant differences in either acid or sugar were found. Subsequently, Forsee and Neller (1944), reporting on a Valencia orange fertilizer experiment located on an acid peat soil in Florid...

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Section: Peecentage Of P E E H a E V E S T Deops In E E L A T I O N Tmentioning

confidence: 99%

Effect of various maintained levels of phosphate on the growth, yield, composition, and quality of Washington Navel oranges

Chapman¹,

Rayner²

1951

Hilg

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“…Las plantas fertilizadas según la distribución C mostraron una concentración significativamente menor de P que aquellas que recibieron el fertilizante según las curvas A y B. Esta respuesta sería consecuencia del efecto antagónico entre los aniones nitrato y fosfato, ampliamente documentado en cítricos (Anderssen, 1937;Chapman y Rayner, 1951;Smith et al, 1954;Wallace, 1990;Okada et al, 1992;Mattos et al, 2006), acentuado por los mayores aportes de N asociados a la distribución C. Al final del ciclo, en el momento de madurez del fruto, no se observó diferencia en la concentración de P en las hojas de los árboles de los tres tratamientos.…”

Section: Fósforounclassified

Estudio de la absorción y translocación del nitrógeno en cítricos en función del aporte estacional del abono nitrogenado mediante el uso de la técnica de dilución isotópica

Alcántara¹

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Dª Belén Martínez Alcántara, Ingeniera Agrónoma, ha realizado bajo nuestra dirección el trabajo que, con el título "Estudio de la absorción y translocación del nitrógeno en cítricos en función del aporte estacional del abono nitrogenado, mediante la técnica de dilución isotópica", presenta para optar al grado de Doctora Ingeniera Agrónoma.Para que así conste a los efectos oportunos, firman el presente documento en Moncada a 9 de marzo de 2010. Fdo. D. Francisco Legaz Paredes Fdo. Dª Ana Quiñones OliverA mis padres... AGRADECIMIENTOSAntes de poner el punto final a este documento, me gustaría dejar constancia del apoyo recibido, que de forma directa o indirecta tanto me ha ayudado en esta etapa, y del que sin duda me siento especialmente orgullosa.En primer lugar, mi agradecimiento es para mis directores de tesis, el Dr. Francisco Legaz, por su dedicación, por ser ejemplo de minuciosidad y perfeccionismo, gracias por todo el tiempo dedicado; a la Dra. Ana Quiñones, por su apoyo durante estos años, por su continuo ánimo y ayudarme a ver siempre el lado positivo. Gracias por la confianza que depositasteis en mí, pero sobre todo, gracias por vuestro cariño.Por supuesto, todo este trabajo no habría sido posible sin los compañeros delDepartamento de Citricultura, gracias por vuestra ayuda en los interminables arranques y en el día a día. A Pepa, gracias porque desde el primer momento has velado por mi y lo sigues haciendo; a Tere, por tu ironía y múltiples refranes; a Mª Carmen Prieto, por tu apoyo y comprensión y por los buenos momentos compartidos. A Bati, por la ayuda en el A Ángeles Calatayud, mi madrina de FIA, gracias por tu ayuda pero especialmente por tu apoyo e interés en todo momento. A Ramón Redondo, María de Castro y Fernando de la Rubia, por ser "el teléfono de la esperanza" en los momentos difíciles con la espectrometría de masas. A Emilio Carbonell y Jordi Pérez, por hacer "fácil" la estadística.A mis amigos, muy especialmente a mis incondicionales, Carolina y María, que habéis seguido con interés cada uno de mis pasos, animándome continuamente, me siento muy afortunada. A Pablo, porque se que puedo contar contigo.A Bosco, por tu infinita paciencia, por escucharme una y otra vez, por animarme siempre, aunque te lo haya puesto especialmente difícil este último año; y porque sí, sí que te lo imaginas…quién si no.A mi familia. A Jose Luis, que has seguido semanalmente mi evolución. A mi hermano, porque siempre estás ahí. Y sobre todo, y muy especialmente, a mis padres, porque si he llegado a completar este proceso ha sido, sin duda, gracias a vosotros.La verdadera ciencia enseña, por encima de todo, a dudar y a ser ignorante. Miguel de Unamuno RESUMENUna fertilización nitrogenada racional debe contemplar no sólo el aporte de una dosis ajustada a las necesidades del cultivo, sino que a su vez debe considerar la correcta distribución de ésta durante el periodo de abonado. Sin embargo, no se dispone de suficiente información del efecto que la distribución estacional del fertilizante tiene sobre la absorción y ...

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Some Observations on the Effects of Boron treatment in the Control of “Hard Fruit” in Citrus

Morris¹

1938

Journal of Pomology and Horticultural Science

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Citrus Manuring—its Effect on Cropping and on the Composition and Keeping Quality of Oranges

Cited by 5 publications

References 12 publications

Effect of various maintained levels of phosphate on the growth, yield, composition, and quality of Washington Navel oranges

Effect of various maintained levels of phosphate on the growth, yield, composition, and quality of Washington Navel oranges

Estudio de la absorción y translocación del nitrógeno en cítricos en función del aporte estacional del abono nitrogenado mediante el uso de la técnica de dilución isotópica

Some Observations on the Effects of Boron treatment in the Control of “Hard Fruit” in Citrus

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