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Optimum Nutrient Rate and Nutritional Constraints in Tuber Crops Growing in Ultisol of India with Special Emphasis on Tannia

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Title Optimum Nutrient Rate and Nutritional Constraints in Tuber Crops Growing in Ultisol of India with Special Emphasis on Tannia
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Creator Kuzhivilayil Susan John & Girija Suja
 
Subject Acidity, constraint nutrients, laterite soil, nutrient-omission pot trial, nutritional disorders, optimum nutrient rate, preliminary rate trial, tannia
 
Description Not Available
Tuber crops are generally grown in marginal lands with low native soil fertility.
In India, laterite soils (acidic Ultisols) are the major soils for tropical tuber crops
and are poor in innate fertility. Among tropical tuber crops, some have adapted to
poor soils, such as cassava, whereas others such as tannia (Xanthosoma sagittifolium
L.) cannot establish well in these soils and may manifest nutritional disorders, which
ultimately result in the complete devastation of the crop. Therefore, we investigated the
effects from a preliminary rate trial (PRT) and nutrient-omission pot trial (NOPT) using
maize as a test crop and a NOPT with tannia to determine the optimum nutrient rate
and limiting nutrients, as well as nutritional problems affecting the growth and yield of
tannia. Each experiment was laid out in a complete randomized design with three replications
and was conducted for both garden and paddy soils. The PRT revealed that the
optimum nutrient requirements for the soils were different, with garden soils requiring
nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur
(S), boron (B), zinc (Zn), and molybdenum (Mo) at 200, 60, 160, 70, 60, 50, 4, 8, and
0.8 kg ha−1, respectively, and paddy soil requiring twice these rates. The NOPT indicated
that in addition to N, P, K, B, and Mo in both garden and paddy soils, Ca and Zn
in paddy soils and S in garden soils were the constraining nutrients. The NOPT carried
out with tannia indicated that the main nutritional problem was subsoil acidity-induced
multinutrient deficiencies involving K, Ca, and Mg
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Date 2021-08-06T04:00:29Z
2021-08-06T04:00:29Z
2012-11-26
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/53313
 
Language English
 
Relation Not Available;
 
Publisher Not Available