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Soil test crop response study in chilli (Capsicum annum L.) for fertilizer recommendation

KrishiKosh

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Title Soil test crop response study in chilli (Capsicum annum L.) for fertilizer recommendation
 
Creator Deepak
 
Contributor Srivastava, Ajaya
 
Subject null
 
Description A field experiment was conducted during spring and summer 2011-12 at Crop Research Centre, G.B.P.U.A. & T., Pantnagar under AICRP on soil test crop response correlation to develop fertilizer adjustment equation for computing nutrient dose for targeted yield of Chilli on the basis of initial soil fertility and nutrient dose. Test crop Chilli was grown using three levels of nitrogen, phosphorus and potassium with control in three different fertility gradient stripes. Twenty four treatments were randomised in each strip and three blocks were made with different organic manure (FYM) level (0 t ha-1, 10 t ha-1 and 20 t ha-1). Chemical analysis was carried out to estimate organic carbon, available nitrogen,
phosphorus and potassium in soil. Nutrient requirement to produce one quintal of Chilli was found to be 3.21 kg for nitrogen, 1.57 kg for phosphorus and 3.96 kg for potassium. Percent contribution for nitrogen, phosphorus and potassium was 42.37, 30.65 and 7.7 from soil;
20.57, 36.0 and 56.0 with FYM; 8.0, 35.0 and 51.0 from chemical fertilizer, respectively. Multiple regression type response function were fitted in to the data by selected soil test methods. Response type for nitrogen - + -, while for phosphorus it was + + - type and for potassium it was - - + type. Fruit yield was positively and significantly correlated with plant yield (0.571**), nitrogen uptake (0.611**), nitrogen (.611**) phosphorus (0.620**) and potassium (0.483**). Significant correlation of fruit yield was found with fertilizer nitrogen (0.476**), phosphorus (0.419**) and potassium (0.398**), and FYM (.317**). Suitability of soil test methods were evaluated by R² value of multiple regression
equation and concluded that alkaline KMnO4 and Organic Carbon, Olsen’s and AB-DTPA and Normal neutral NH4OAC and AB-DTPA methods are suitable for the determination of available nitrogen, phosphorus and potassium, respectively. These findings may be used as guide for efficient fertilizer management by reducing cost of cultivation and increasing fertilizer use efficiency. Therefore soil test based fertilizer
recommendation may be a useful tool for balanced fertilization of nutrients.
 
Date 2018-10-18T10:00:32Z
2018-10-18T10:00:32Z
2013-06
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/5810081733
 
Language en
 
Format application/pdf
 
Publisher G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)