CND and Pca Approaches for Multivariate Diagnosis of Nutrient Imbalance in Papaya (Carica Papaya L.)

Anjaneyulu, K.; Raghupathi, H.B.

doi:10.17660/actahortic.2010.851.55

“…The higher norm value noticed for Ca was mainly due to the presence of high free calcium carbonate in soils, which might have overwhelming influence on calcium uptake. This finding corroborates with the results observed by Anjaneyulu and Raghupathi (2010). Among the micronutrients, Fe requirement was much higher compared to Mn, Zn.…”

Section: Compositional Nutrient Diagnosis (Cnd) Normssupporting

confidence: 93%

“…Similarly, the results are in conformity with the findings of Anjaneyulu (2007) in which Zn and K were identified as common yield limiting nutrients in papaya diagnosis and recommendation integrated system (DRIS) technique. Boron and Manganese were also found to be low in some potato fields as reflected through indices (Anjaneyulu and Raghupathi, 2010). However, no single nutrient was found solely responsible for low yield (Anjaneyulu et al, 2008).…”

Section: Compositional Nutrient Diagnosis (Cnd) Indicesmentioning

confidence: 99%

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Compositional Nutrient Diagnosis (CND) Norms and Indices for Potato (Solanum tuberosum L.)

Ganeshamurthy¹,

Govindakrishnan²,

Raghupathi³

et al. 2019

J Hortic Sci

0

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A survey was conducted in potato fields for collection of leaf samples to establish nutrient concentration yield data bank. The data bank was used for developing multivariate compositional nutrient diagnosis (CND) norms for assessing the nutritional status of selected centres of potato growing fields. The mean N, P and K concentrations were 2.09, 0.25 and 4.16 %, respectively. The mean Ca (1.11%) concentration was twice higher compared to Mg (0.63 %) concentration. The mean values of Zn, Cu, Fe, Mn and B were 43.69, 31.24, 986.71, 192.76 and 59.98 ppm, respectively. The CND norms for V N, V P and V K were 3.04, 0.94 and 3.73, respectively. The norm for Ca (V Ca =2.45) and Mg (V Mg =1.78) were much narrower compared to the absolute nutrient concentration. The norm for V Zn , V Cu , V Fe , V Mn and V B were -3.24, -3.60, -0.23, -1.98 and -2.89 respectively. The multivariate CND norms developed for ten nutrients proved to be an important tool for diagnosis of nutrient imbalance in potato. The nutrient indices developed indicated that Zn was the most common yield-limiting nutrient. The CND norms and the indices developed can be used for identifying the hidden hunger of various nutrients in potato for evolving nutrient management strategies.

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“…Similarly, Ca concentration showed a wide variation ranging from 0.60 to 1.57 %. The mean Ca (1.11 %) was twice higher to Mg (0.63 %), which was comparable to the values reported by Anjaneyulu et al, (2008) in guava and Anjaneyulu and Raghupathi (2010) in papaya. The mean leaf concentration of Zn, Cu, Fe, Mn and B were 43.69, 31.24, 986.71, 192.76 and 59.28 ppm, respectively.…”

Section: Nutrient Concentration Rangesupporting

confidence: 89%

Compositional Nutrient Diagnosis (CND) Norms and Indices for Potato (Solanum tuberosum L.)

A N,

P,

H B

et al. 2019

J. Hortic. Sci.

2

0

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A survey was conducted in potato fields for collection of leaf samples to establish nutrient concentration yield data bank. The data bank was used for developing multivariate compositional nutrient diagnosis (CND) norms for assessing the nutritional status of selected centres of potato growing fields. The mean N, P and K concentrations were 2.09, 0.25 and 4.16 %, respectively. The mean Ca (1.11%) concentration was twice higher compared to Mg (0.63 %) concentration. The mean values of Zn, Cu, Fe, Mn and B were 43.69, 31.24, 986.71, 192.76 and 59.98 ppm, respectively. The CND norms for V N, V P and V K were 3.04, 0.94 and 3.73, respectively. The norm for Ca (V Ca =2.45) and Mg (V Mg =1.78) were much narrower compared to the absolute nutrient concentration. The norm for V Zn , V Cu , V Fe , V Mn and V B were -3.24, -3.60, -0.23, -1.98 and -2.89 respectively. The multivariate CND norms developed for ten nutrients proved to be an important tool for diagnosis of nutrient imbalance in potato. The nutrient indices developed indicated that Zn was the most common yield-limiting nutrient. The CND norms and the indices developed can be used for identifying the hidden hunger of various nutrients in potato for evolving nutrient management strategies.

show abstract